| /* |
| * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/altHashing.hpp" |
| #include "classfile/classLoaderData.inline.hpp" |
| #include "classfile/javaClasses.inline.hpp" |
| #include "classfile/javaThreadStatus.hpp" |
| #include "classfile/moduleEntry.hpp" |
| #include "classfile/stringTable.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "code/debugInfo.hpp" |
| #include "code/dependencyContext.hpp" |
| #include "code/pcDesc.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "interpreter/linkResolver.hpp" |
| #include "logging/log.hpp" |
| #include "logging/logStream.hpp" |
| #include "memory/heapShared.inline.hpp" |
| #include "memory/metaspaceShared.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/fieldStreams.inline.hpp" |
| #include "oops/instanceKlass.inline.hpp" |
| #include "oops/instanceMirrorKlass.hpp" |
| #include "oops/klass.hpp" |
| #include "oops/klass.inline.hpp" |
| #include "oops/method.inline.hpp" |
| #include "oops/objArrayOop.inline.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/symbol.hpp" |
| #include "oops/recordComponent.hpp" |
| #include "oops/typeArrayOop.inline.hpp" |
| #include "prims/jvmtiExport.hpp" |
| #include "prims/methodHandles.hpp" |
| #include "prims/resolvedMethodTable.hpp" |
| #include "runtime/fieldDescriptor.inline.hpp" |
| #include "runtime/frame.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/init.hpp" |
| #include "runtime/interfaceSupport.inline.hpp" |
| #include "runtime/java.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/jniHandles.inline.hpp" |
| #include "runtime/reflectionUtils.hpp" |
| #include "runtime/safepoint.hpp" |
| #include "runtime/safepointVerifiers.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/vframe.inline.hpp" |
| #include "runtime/vm_version.hpp" |
| #include "utilities/align.hpp" |
| #include "utilities/preserveException.hpp" |
| #include "utilities/utf8.hpp" |
| #if INCLUDE_JVMCI |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #endif |
| |
| #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \ |
| klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum); |
| |
| #if INCLUDE_CDS |
| #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \ |
| f->do_u4((u4*)&_##name##_offset); |
| #endif |
| |
| #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \ |
| { SystemDictionary::WK_KLASS_ENUM_NAME(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java }, |
| |
| InjectedField JavaClasses::_injected_fields[] = { |
| ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD) |
| }; |
| |
| // Register native methods of Object |
| void java_lang_Object::register_natives(TRAPS) { |
| InstanceKlass* obj = SystemDictionary::Object_klass(); |
| Method::register_native(obj, vmSymbols::hashCode_name(), |
| vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK); |
| Method::register_native(obj, vmSymbols::wait_name(), |
| vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK); |
| Method::register_native(obj, vmSymbols::notify_name(), |
| vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK); |
| Method::register_native(obj, vmSymbols::notifyAll_name(), |
| vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK); |
| Method::register_native(obj, vmSymbols::clone_name(), |
| vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD); |
| } |
| |
| int JavaClasses::compute_injected_offset(InjectedFieldID id) { |
| return _injected_fields[id].compute_offset(); |
| } |
| |
| InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) { |
| *field_count = 0; |
| |
| vmSymbolID sid = vmSymbols::find_sid(class_name); |
| if (sid == vmSymbolID::NO_SID) { |
| // Only well known classes can inject fields |
| return NULL; |
| } |
| |
| int count = 0; |
| int start = -1; |
| |
| #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \ |
| if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \ |
| count++; \ |
| if (start == -1) start = klass##_##name##_enum; \ |
| } |
| ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD); |
| #undef LOOKUP_INJECTED_FIELD |
| |
| if (start != -1) { |
| *field_count = count; |
| return _injected_fields + start; |
| } |
| return NULL; |
| } |
| |
| |
| // Helpful routine for computing field offsets at run time rather than hardcoding them |
| // Finds local fields only, including static fields. Static field offsets are from the |
| // beginning of the mirror. |
| static void compute_offset(int &dest_offset, |
| InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol, |
| bool is_static = false) { |
| fieldDescriptor fd; |
| if (ik == NULL) { |
| ResourceMark rm; |
| log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string()); |
| vm_exit_during_initialization("Invalid layout of well-known class"); |
| } |
| |
| if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) { |
| ResourceMark rm; |
| log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(), |
| name_symbol->as_C_string(), signature_symbol->as_C_string()); |
| #ifndef PRODUCT |
| // Prints all fields and offsets |
| Log(class) lt; |
| LogStream ls(lt.error()); |
| ik->print_on(&ls); |
| #endif //PRODUCT |
| vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class"); |
| } |
| dest_offset = fd.offset(); |
| } |
| |
| // Overloading to pass name as a string. |
| static void compute_offset(int& dest_offset, InstanceKlass* ik, |
| const char* name_string, Symbol* signature_symbol, |
| bool is_static = false) { |
| TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string)); |
| if (name == NULL) { |
| ResourceMark rm; |
| log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string); |
| vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name()); |
| } |
| compute_offset(dest_offset, ik, name, signature_symbol, is_static); |
| } |
| |
| |
| #if INCLUDE_CDS |
| #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \ |
| f->do_u4((u4*)&offset) |
| #endif |
| |
| #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \ |
| compute_offset(offset, klass, name, vmSymbols::signature(), is_static) |
| |
| |
| // java_lang_String |
| |
| int java_lang_String::_value_offset; |
| int java_lang_String::_hash_offset; |
| int java_lang_String::_hashIsZero_offset; |
| int java_lang_String::_coder_offset; |
| |
| bool java_lang_String::_initialized; |
| |
| bool java_lang_String::is_instance(oop obj) { |
| return is_instance_inlined(obj); |
| } |
| |
| #define STRING_FIELDS_DO(macro) \ |
| macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \ |
| macro(_hash_offset, k, "hash", int_signature, false); \ |
| macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \ |
| macro(_coder_offset, k, "coder", byte_signature, false); |
| |
| void java_lang_String::compute_offsets() { |
| if (_initialized) { |
| return; |
| } |
| |
| InstanceKlass* k = SystemDictionary::String_klass(); |
| STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| |
| _initialized = true; |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_String::serialize_offsets(SerializeClosure* f) { |
| STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| f->do_bool(&_initialized); |
| } |
| #endif |
| |
| class CompactStringsFixup : public FieldClosure { |
| private: |
| bool _value; |
| |
| public: |
| CompactStringsFixup(bool value) : _value(value) {} |
| |
| void do_field(fieldDescriptor* fd) { |
| if (fd->name() == vmSymbols::compact_strings_name()) { |
| oop mirror = fd->field_holder()->java_mirror(); |
| assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String"); |
| assert(mirror != NULL, "String must have mirror already"); |
| mirror->bool_field_put(fd->offset(), _value); |
| } |
| } |
| }; |
| |
| void java_lang_String::set_compact_strings(bool value) { |
| CompactStringsFixup fix(value); |
| SystemDictionary::String_klass()->do_local_static_fields(&fix); |
| } |
| |
| Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) { |
| assert(_initialized, "Must be initialized"); |
| assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings"); |
| |
| // Create the String object first, so there's a chance that the String |
| // and the char array it points to end up in the same cache line. |
| oop obj; |
| obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH); |
| |
| // Create the char array. The String object must be handlized here |
| // because GC can happen as a result of the allocation attempt. |
| Handle h_obj(THREAD, obj); |
| int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16. |
| typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);; |
| |
| // Point the String at the char array |
| obj = h_obj(); |
| set_value(obj, buffer); |
| // No need to zero the offset, allocation zero'ed the entire String object |
| set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16); |
| return h_obj; |
| } |
| |
| Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) { |
| bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length); |
| Handle h_obj = basic_create(length, is_latin1, CHECK_NH); |
| typeArrayOop buffer = value(h_obj()); |
| assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]"); |
| if (is_latin1) { |
| for (int index = 0; index < length; index++) { |
| buffer->byte_at_put(index, (jbyte)unicode[index]); |
| } |
| } else { |
| for (int index = 0; index < length; index++) { |
| buffer->char_at_put(index, unicode[index]); |
| } |
| } |
| |
| #ifdef ASSERT |
| { |
| ResourceMark rm; |
| char* expected = UNICODE::as_utf8(unicode, length); |
| char* actual = as_utf8_string(h_obj()); |
| if (strcmp(expected, actual) != 0) { |
| fatal("Unicode conversion failure: %s --> %s", expected, actual); |
| } |
| } |
| #endif |
| |
| return h_obj; |
| } |
| |
| oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) { |
| Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { |
| if (utf8_str == NULL) { |
| return Handle(); |
| } |
| bool has_multibyte, is_latin1; |
| int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte); |
| if (!CompactStrings) { |
| has_multibyte = true; |
| is_latin1 = false; |
| } |
| |
| Handle h_obj = basic_create(length, is_latin1, CHECK_NH); |
| if (length > 0) { |
| if (!has_multibyte) { |
| const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str); |
| ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length); |
| } else if (is_latin1) { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length); |
| } else { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); |
| } |
| } |
| |
| #ifdef ASSERT |
| // This check is too strict when the input string is not a valid UTF8. |
| // For example, it may be created with arbitrary content via jni_NewStringUTF. |
| if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) { |
| ResourceMark rm; |
| const char* expected = utf8_str; |
| char* actual = as_utf8_string(h_obj()); |
| if (strcmp(expected, actual) != 0) { |
| fatal("String conversion failure: %s --> %s", expected, actual); |
| } |
| } |
| #endif |
| |
| return h_obj; |
| } |
| |
| oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { |
| Handle h_obj = create_from_str(utf8_str, CHECK_NULL); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) { |
| const char* utf8_str = (char*)symbol->bytes(); |
| int utf8_len = symbol->utf8_length(); |
| |
| bool has_multibyte, is_latin1; |
| int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte); |
| if (!CompactStrings) { |
| has_multibyte = true; |
| is_latin1 = false; |
| } |
| |
| Handle h_obj = basic_create(length, is_latin1, CHECK_NH); |
| if (length > 0) { |
| if (!has_multibyte) { |
| const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str); |
| ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length); |
| } else if (is_latin1) { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length); |
| } else { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); |
| } |
| } |
| |
| #ifdef ASSERT |
| { |
| ResourceMark rm; |
| const char* expected = symbol->as_utf8(); |
| char* actual = as_utf8_string(h_obj()); |
| if (strncmp(expected, actual, utf8_len) != 0) { |
| fatal("Symbol conversion failure: %s --> %s", expected, actual); |
| } |
| } |
| #endif |
| |
| return h_obj; |
| } |
| |
| // Converts a C string to a Java String based on current encoding |
| Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { |
| assert(str != NULL, "bad arguments"); |
| |
| typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *); |
| static to_java_string_fn_t _to_java_string_fn = NULL; |
| |
| if (_to_java_string_fn == NULL) { |
| void *lib_handle = os::native_java_library(); |
| _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform")); |
| #if defined(_WIN32) && !defined(_WIN64) |
| if (_to_java_string_fn == NULL) { |
| // On 32 bit Windows, also try __stdcall decorated name |
| _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8")); |
| } |
| #endif |
| if (_to_java_string_fn == NULL) { |
| fatal("JNU_NewStringPlatform missing"); |
| } |
| } |
| |
| jstring js = NULL; |
| { |
| JavaThread* thread = THREAD->as_Java_thread(); |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| js = (_to_java_string_fn)(thread->jni_environment(), str); |
| } |
| |
| Handle native_platform_string(THREAD, JNIHandles::resolve(js)); |
| JNIHandles::destroy_local(js); // destroy local JNIHandle. |
| return native_platform_string; |
| } |
| |
| // Converts a Java String to a native C string that can be used for |
| // native OS calls. |
| char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { |
| typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); |
| static to_platform_string_fn_t _to_platform_string_fn = NULL; |
| |
| if (_to_platform_string_fn == NULL) { |
| void *lib_handle = os::native_java_library(); |
| _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars")); |
| if (_to_platform_string_fn == NULL) { |
| fatal("GetStringPlatformChars missing"); |
| } |
| } |
| |
| char *native_platform_string; |
| { JavaThread* thread = THREAD->as_Java_thread(); |
| jstring js = (jstring) JNIHandles::make_local(thread, java_string()); |
| bool is_copy; |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| JNIEnv *env = thread->jni_environment(); |
| native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); |
| assert(is_copy == JNI_TRUE, "is_copy value changed"); |
| JNIHandles::destroy_local(js); |
| } |
| return native_platform_string; |
| } |
| |
| Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { |
| oop obj = java_string(); |
| // Typical usage is to convert all '/' to '.' in string. |
| typeArrayOop value = java_lang_String::value(obj); |
| int length = java_lang_String::length(obj, value); |
| bool is_latin1 = java_lang_String::is_latin1(obj); |
| |
| // First check if any from_char exist |
| int index; // Declared outside, used later |
| for (index = 0; index < length; index++) { |
| jchar c = !is_latin1 ? value->char_at(index) : |
| ((jchar) value->byte_at(index)) & 0xff; |
| if (c == from_char) { |
| break; |
| } |
| } |
| if (index == length) { |
| // No from_char, so do not copy. |
| return java_string; |
| } |
| |
| // Check if result string will be latin1 |
| bool to_is_latin1 = false; |
| |
| // Replacement char must be latin1 |
| if (CompactStrings && UNICODE::is_latin1(to_char)) { |
| if (is_latin1) { |
| // Source string is latin1 as well |
| to_is_latin1 = true; |
| } else if (!UNICODE::is_latin1(from_char)) { |
| // We are replacing an UTF16 char. Scan string to |
| // check if result can be latin1 encoded. |
| to_is_latin1 = true; |
| for (index = 0; index < length; index++) { |
| jchar c = value->char_at(index); |
| if (c != from_char && !UNICODE::is_latin1(c)) { |
| to_is_latin1 = false; |
| break; |
| } |
| } |
| } |
| } |
| |
| // Create new UNICODE (or byte) buffer. Must handlize value because GC |
| // may happen during String and char array creation. |
| typeArrayHandle h_value(THREAD, value); |
| Handle string = basic_create(length, to_is_latin1, CHECK_NH); |
| typeArrayOop from_buffer = h_value(); |
| typeArrayOop to_buffer = java_lang_String::value(string()); |
| |
| // Copy contents |
| for (index = 0; index < length; index++) { |
| jchar c = (!is_latin1) ? from_buffer->char_at(index) : |
| ((jchar) from_buffer->byte_at(index)) & 0xff; |
| if (c == from_char) { |
| c = to_char; |
| } |
| if (!to_is_latin1) { |
| to_buffer->char_at_put(index, c); |
| } else { |
| to_buffer->byte_at_put(index, (jbyte) c); |
| } |
| } |
| return string; |
| } |
| |
| jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| |
| jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length); |
| if (result != NULL) { |
| if (!is_latin1) { |
| for (int index = 0; index < length; index++) { |
| result[index] = value->char_at(index); |
| } |
| } else { |
| for (int index = 0; index < length; index++) { |
| result[index] = ((jchar) value->byte_at(index)) & 0xff; |
| } |
| } |
| } else { |
| THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string"); |
| } |
| return result; |
| } |
| |
| unsigned int java_lang_String::hash_code(oop java_string) { |
| // The hash and hashIsZero fields are subject to a benign data race, |
| // making it crucial to ensure that any observable result of the |
| // calculation in this method stays correct under any possible read of |
| // these fields. Necessary restrictions to allow this to be correct |
| // without explicit memory fences or similar concurrency primitives is |
| // that we can ever only write to one of these two fields for a given |
| // String instance, and that the computation is idempotent and derived |
| // from immutable state |
| assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized"); |
| if (java_lang_String::hash_is_set(java_string)) { |
| return java_string->int_field(_hash_offset); |
| } |
| |
| typeArrayOop value = java_lang_String::value(java_string); |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| |
| unsigned int hash = 0; |
| if (length > 0) { |
| if (is_latin1) { |
| hash = java_lang_String::hash_code(value->byte_at_addr(0), length); |
| } else { |
| hash = java_lang_String::hash_code(value->char_at_addr(0), length); |
| } |
| } |
| |
| if (hash != 0) { |
| java_string->int_field_put(_hash_offset, hash); |
| } else { |
| java_string->bool_field_put(_hashIsZero_offset, true); |
| } |
| return hash; |
| } |
| |
| char* java_lang_String::as_quoted_ascii(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| |
| if (length == 0) return NULL; |
| |
| char* result; |
| int result_length; |
| if (!is_latin1) { |
| jchar* base = value->char_at_addr(0); |
| result_length = UNICODE::quoted_ascii_length(base, length) + 1; |
| result = NEW_RESOURCE_ARRAY(char, result_length); |
| UNICODE::as_quoted_ascii(base, length, result, result_length); |
| } else { |
| jbyte* base = value->byte_at_addr(0); |
| result_length = UNICODE::quoted_ascii_length(base, length) + 1; |
| result = NEW_RESOURCE_ARRAY(char, result_length); |
| UNICODE::as_quoted_ascii(base, length, result, result_length); |
| } |
| assert(result_length >= length + 1, "must not be shorter"); |
| assert(result_length == (int)strlen(result) + 1, "must match"); |
| return result; |
| } |
| |
| Symbol* java_lang_String::as_symbol(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar* base = (length == 0) ? NULL : value->char_at_addr(0); |
| Symbol* sym = SymbolTable::new_symbol(base, length); |
| return sym; |
| } else { |
| ResourceMark rm; |
| jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); |
| const char* base = UNICODE::as_utf8(position, length); |
| Symbol* sym = SymbolTable::new_symbol(base, length); |
| return sym; |
| } |
| } |
| |
| Symbol* java_lang_String::as_symbol_or_null(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar* base = (length == 0) ? NULL : value->char_at_addr(0); |
| return SymbolTable::probe_unicode(base, length); |
| } else { |
| ResourceMark rm; |
| jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); |
| const char* base = UNICODE::as_utf8(position, length); |
| return SymbolTable::probe(base, length); |
| } |
| } |
| |
| int java_lang_String::utf8_length(oop java_string, typeArrayOop value) { |
| assert(value_equals(value, java_lang_String::value(java_string)), |
| "value must be same as java_lang_String::value(java_string)"); |
| int length = java_lang_String::length(java_string, value); |
| if (length == 0) { |
| return 0; |
| } |
| if (!java_lang_String::is_latin1(java_string)) { |
| return UNICODE::utf8_length(value->char_at_addr(0), length); |
| } else { |
| return UNICODE::utf8_length(value->byte_at_addr(0), length); |
| } |
| } |
| |
| int java_lang_String::utf8_length(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| return utf8_length(java_string, value); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string) { |
| int length; |
| return as_utf8_string(java_string, length); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, int& length) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(0); |
| return UNICODE::as_utf8(position, length); |
| } else { |
| jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); |
| return UNICODE::as_utf8(position, length); |
| } |
| } |
| |
| // Uses a provided buffer if it's sufficiently large, otherwise allocates |
| // a resource array to fit |
| char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int len = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar *position = (len == 0) ? NULL : value->char_at_addr(0); |
| utf8_len = UNICODE::utf8_length(position, len); |
| if (utf8_len >= buflen) { |
| buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1); |
| } |
| return UNICODE::as_utf8(position, len, buf, utf8_len + 1); |
| } else { |
| jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0); |
| utf8_len = UNICODE::utf8_length(position, len); |
| if (utf8_len >= buflen) { |
| buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1); |
| } |
| return UNICODE::as_utf8(position, len, buf, utf8_len + 1); |
| } |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) { |
| assert(value_equals(value, java_lang_String::value(java_string)), |
| "value must be same as java_lang_String::value(java_string)"); |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(0); |
| return UNICODE::as_utf8(position, length, buf, buflen); |
| } else { |
| jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); |
| return UNICODE::as_utf8(position, length, buf, buflen); |
| } |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| return as_utf8_string(java_string, value, buf, buflen); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| assert(start + len <= java_lang_String::length(java_string), "just checking"); |
| if (!is_latin1) { |
| jchar* position = value->char_at_addr(start); |
| return UNICODE::as_utf8(position, len); |
| } else { |
| jbyte* position = value->byte_at_addr(start); |
| return UNICODE::as_utf8(position, len); |
| } |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) { |
| assert(value_equals(value, java_lang_String::value(java_string)), |
| "value must be same as java_lang_String::value(java_string)"); |
| assert(start + len <= java_lang_String::length(java_string), "just checking"); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| jchar* position = value->char_at_addr(start); |
| return UNICODE::as_utf8(position, len, buf, buflen); |
| } else { |
| jbyte* position = value->byte_at_addr(start); |
| return UNICODE::as_utf8(position, len, buf, buflen); |
| } |
| } |
| |
| bool java_lang_String::equals(oop java_string, const jchar* chars, int len) { |
| assert(java_string->klass() == SystemDictionary::String_klass(), |
| "must be java_string"); |
| typeArrayOop value = java_lang_String::value_no_keepalive(java_string); |
| int length = java_lang_String::length(java_string, value); |
| if (length != len) { |
| return false; |
| } |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| if (!is_latin1) { |
| for (int i = 0; i < len; i++) { |
| if (value->char_at(i) != chars[i]) { |
| return false; |
| } |
| } |
| } else { |
| for (int i = 0; i < len; i++) { |
| if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| bool java_lang_String::equals(oop str1, oop str2) { |
| assert(str1->klass() == SystemDictionary::String_klass(), |
| "must be java String"); |
| assert(str2->klass() == SystemDictionary::String_klass(), |
| "must be java String"); |
| typeArrayOop value1 = java_lang_String::value_no_keepalive(str1); |
| bool is_latin1 = java_lang_String::is_latin1(str1); |
| typeArrayOop value2 = java_lang_String::value_no_keepalive(str2); |
| bool is_latin2 = java_lang_String::is_latin1(str2); |
| |
| if (is_latin1 != is_latin2) { |
| // Strings with different coders are never equal. |
| return false; |
| } |
| return value_equals(value1, value2); |
| } |
| |
| void java_lang_String::print(oop java_string, outputStream* st) { |
| assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string"); |
| typeArrayOop value = java_lang_String::value_no_keepalive(java_string); |
| |
| if (value == NULL) { |
| // This can happen if, e.g., printing a String |
| // object before its initializer has been called |
| st->print("NULL"); |
| return; |
| } |
| |
| int length = java_lang_String::length(java_string, value); |
| bool is_latin1 = java_lang_String::is_latin1(java_string); |
| |
| st->print("\""); |
| for (int index = 0; index < length; index++) { |
| st->print("%c", (!is_latin1) ? value->char_at(index) : |
| ((jchar) value->byte_at(index)) & 0xff ); |
| } |
| st->print("\""); |
| } |
| |
| // java_lang_Class |
| |
| int java_lang_Class::_klass_offset; |
| int java_lang_Class::_array_klass_offset; |
| int java_lang_Class::_oop_size_offset; |
| int java_lang_Class::_static_oop_field_count_offset; |
| int java_lang_Class::_class_loader_offset; |
| int java_lang_Class::_module_offset; |
| int java_lang_Class::_protection_domain_offset; |
| int java_lang_Class::_component_mirror_offset; |
| int java_lang_Class::_init_lock_offset; |
| int java_lang_Class::_signers_offset; |
| int java_lang_Class::_name_offset; |
| int java_lang_Class::_source_file_offset; |
| int java_lang_Class::_classData_offset; |
| int java_lang_Class::_classRedefinedCount_offset; |
| |
| bool java_lang_Class::_offsets_computed = false; |
| GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL; |
| GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL; |
| |
| static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) { |
| assert(mirror.not_null() && fd->is_static(), "just checking"); |
| if (fd->has_initial_value()) { |
| BasicType t = fd->field_type(); |
| switch (t) { |
| case T_BYTE: |
| mirror()->byte_field_put(fd->offset(), fd->int_initial_value()); |
| break; |
| case T_BOOLEAN: |
| mirror()->bool_field_put(fd->offset(), fd->int_initial_value()); |
| break; |
| case T_CHAR: |
| mirror()->char_field_put(fd->offset(), fd->int_initial_value()); |
| break; |
| case T_SHORT: |
| mirror()->short_field_put(fd->offset(), fd->int_initial_value()); |
| break; |
| case T_INT: |
| mirror()->int_field_put(fd->offset(), fd->int_initial_value()); |
| break; |
| case T_FLOAT: |
| mirror()->float_field_put(fd->offset(), fd->float_initial_value()); |
| break; |
| case T_DOUBLE: |
| mirror()->double_field_put(fd->offset(), fd->double_initial_value()); |
| break; |
| case T_LONG: |
| mirror()->long_field_put(fd->offset(), fd->long_initial_value()); |
| break; |
| case T_OBJECT: |
| { |
| assert(fd->signature() == vmSymbols::string_signature(), |
| "just checking"); |
| if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) { |
| // Archive the String field and update the pointer. |
| oop s = mirror()->obj_field(fd->offset()); |
| oop archived_s = StringTable::create_archived_string(s, CHECK); |
| mirror()->obj_field_put(fd->offset(), archived_s); |
| } else { |
| oop string = fd->string_initial_value(CHECK); |
| mirror()->obj_field_put(fd->offset(), string); |
| } |
| } |
| break; |
| default: |
| THROW_MSG(vmSymbols::java_lang_ClassFormatError(), |
| "Illegal ConstantValue attribute in class file"); |
| } |
| } |
| } |
| |
| |
| void java_lang_Class::fixup_mirror(Klass* k, TRAPS) { |
| assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already"); |
| |
| // If the offset was read from the shared archive, it was fixed up already |
| if (!k->is_shared()) { |
| if (k->is_instance_klass()) { |
| // During bootstrap, java.lang.Class wasn't loaded so static field |
| // offsets were computed without the size added it. Go back and |
| // update all the static field offsets to included the size. |
| for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) { |
| if (fs.access_flags().is_static()) { |
| int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields(); |
| fs.set_offset(real_offset); |
| } |
| } |
| } |
| } |
| |
| if (k->is_shared() && k->has_archived_mirror_index()) { |
| if (HeapShared::open_archive_heap_region_mapped()) { |
| bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK); |
| assert(present, "Missing archived mirror for %s", k->external_name()); |
| return; |
| } else { |
| k->clear_java_mirror_handle(); |
| k->clear_archived_mirror_index(); |
| } |
| } |
| create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK); |
| } |
| |
| void java_lang_Class::initialize_mirror_fields(Klass* k, |
| Handle mirror, |
| Handle protection_domain, |
| Handle classData, |
| TRAPS) { |
| // Allocate a simple java object for a lock. |
| // This needs to be a java object because during class initialization |
| // it can be held across a java call. |
| typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK); |
| set_init_lock(mirror(), r); |
| |
| // Set protection domain also |
| set_protection_domain(mirror(), protection_domain()); |
| |
| // Initialize static fields |
| InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK); |
| |
| // Set classData |
| set_class_data(mirror(), classData()); |
| } |
| |
| // Set the java.lang.Module module field in the java_lang_Class mirror |
| void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) { |
| if (module.is_null()) { |
| // During startup, the module may be NULL only if java.base has not been defined yet. |
| // Put the class on the fixup_module_list to patch later when the java.lang.Module |
| // for java.base is known. But note that since we captured the NULL module another |
| // thread may have completed that initialization. |
| |
| bool javabase_was_defined = false; |
| { |
| MutexLocker m1(THREAD, Module_lock); |
| // Keep list of classes needing java.base module fixup |
| if (!ModuleEntryTable::javabase_defined()) { |
| assert(k->java_mirror() != NULL, "Class's mirror is null"); |
| k->class_loader_data()->inc_keep_alive(); |
| assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized"); |
| fixup_module_field_list()->push(k); |
| } else { |
| javabase_was_defined = true; |
| } |
| } |
| |
| // If java.base was already defined then patch this particular class with java.base. |
| if (javabase_was_defined) { |
| ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry(); |
| assert(javabase_entry != NULL && javabase_entry->module() != NULL, |
| "Setting class module field, " JAVA_BASE_NAME " should be defined"); |
| Handle javabase_handle(THREAD, javabase_entry->module()); |
| set_module(mirror(), javabase_handle()); |
| } |
| } else { |
| assert(Universe::is_module_initialized() || |
| (ModuleEntryTable::javabase_defined() && |
| (module() == ModuleEntryTable::javabase_moduleEntry()->module())), |
| "Incorrect java.lang.Module specification while creating mirror"); |
| set_module(mirror(), module()); |
| } |
| } |
| |
| // Statically allocate fixup lists because they always get created. |
| void java_lang_Class::allocate_fixup_lists() { |
| GrowableArray<Klass*>* mirror_list = |
| new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, mtClass); |
| set_fixup_mirror_list(mirror_list); |
| |
| GrowableArray<Klass*>* module_list = |
| new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, mtModule); |
| set_fixup_module_field_list(module_list); |
| } |
| |
| void java_lang_Class::create_mirror(Klass* k, Handle class_loader, |
| Handle module, Handle protection_domain, |
| Handle classData, TRAPS) { |
| assert(k != NULL, "Use create_basic_type_mirror for primitive types"); |
| assert(k->java_mirror() == NULL, "should only assign mirror once"); |
| |
| // Use this moment of initialization to cache modifier_flags also, |
| // to support Class.getModifiers(). Instance classes recalculate |
| // the cached flags after the class file is parsed, but before the |
| // class is put into the system dictionary. |
| int computed_modifiers = k->compute_modifier_flags(CHECK); |
| k->set_modifier_flags(computed_modifiers); |
| // Class_klass has to be loaded because it is used to allocate |
| // the mirror. |
| if (SystemDictionary::Class_klass_loaded()) { |
| // Allocate mirror (java.lang.Class instance) |
| oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK); |
| Handle mirror(THREAD, mirror_oop); |
| Handle comp_mirror; |
| |
| // Setup indirection from mirror->klass |
| java_lang_Class::set_klass(mirror(), k); |
| |
| InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass()); |
| assert(oop_size(mirror()) == mk->instance_size(k), "should have been set"); |
| |
| java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror())); |
| |
| // It might also have a component mirror. This mirror must already exist. |
| if (k->is_array_klass()) { |
| if (k->is_typeArray_klass()) { |
| BasicType type = TypeArrayKlass::cast(k)->element_type(); |
| comp_mirror = Handle(THREAD, Universe::java_mirror(type)); |
| } else { |
| assert(k->is_objArray_klass(), "Must be"); |
| Klass* element_klass = ObjArrayKlass::cast(k)->element_klass(); |
| assert(element_klass != NULL, "Must have an element klass"); |
| comp_mirror = Handle(THREAD, element_klass->java_mirror()); |
| } |
| assert(comp_mirror() != NULL, "must have a mirror"); |
| |
| // Two-way link between the array klass and its component mirror: |
| // (array_klass) k -> mirror -> component_mirror -> array_klass -> k |
| set_component_mirror(mirror(), comp_mirror()); |
| // See below for ordering dependencies between field array_klass in component mirror |
| // and java_mirror in this klass. |
| } else { |
| assert(k->is_instance_klass(), "Must be"); |
| |
| initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| // If any of the fields throws an exception like OOM remove the klass field |
| // from the mirror so GC doesn't follow it after the klass has been deallocated. |
| // This mirror looks like a primitive type, which logically it is because it |
| // it represents no class. |
| java_lang_Class::set_klass(mirror(), NULL); |
| return; |
| } |
| } |
| |
| // set the classLoader field in the java_lang_Class instance |
| assert(class_loader() == k->class_loader(), "should be same"); |
| set_class_loader(mirror(), class_loader()); |
| |
| // Setup indirection from klass->mirror |
| // after any exceptions can happen during allocations. |
| k->set_java_mirror(mirror); |
| |
| // Set the module field in the java_lang_Class instance. This must be done |
| // after the mirror is set. |
| set_mirror_module_field(k, mirror, module, THREAD); |
| |
| if (comp_mirror() != NULL) { |
| // Set after k->java_mirror() is published, because compiled code running |
| // concurrently doesn't expect a k to have a null java_mirror. |
| release_set_array_klass(comp_mirror(), k); |
| } |
| } else { |
| assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized"); |
| fixup_mirror_list()->push(k); |
| } |
| } |
| |
| #if INCLUDE_CDS_JAVA_HEAP |
| // Clears mirror fields. Static final fields with initial values are reloaded |
| // from constant pool. The object identity hash is in the object header and is |
| // not affected. |
| class ResetMirrorField: public FieldClosure { |
| private: |
| Handle _m; |
| |
| public: |
| ResetMirrorField(Handle mirror) : _m(mirror) {} |
| |
| void do_field(fieldDescriptor* fd) { |
| assert(DumpSharedSpaces, "dump time only"); |
| assert(_m.not_null(), "Mirror cannot be NULL"); |
| |
| if (fd->is_static() && fd->has_initial_value()) { |
| initialize_static_field(fd, _m, Thread::current()); |
| return; |
| } |
| |
| BasicType ft = fd->field_type(); |
| switch (ft) { |
| case T_BYTE: |
| _m()->byte_field_put(fd->offset(), 0); |
| break; |
| case T_CHAR: |
| _m()->char_field_put(fd->offset(), 0); |
| break; |
| case T_DOUBLE: |
| _m()->double_field_put(fd->offset(), 0); |
| break; |
| case T_FLOAT: |
| _m()->float_field_put(fd->offset(), 0); |
| break; |
| case T_INT: |
| _m()->int_field_put(fd->offset(), 0); |
| break; |
| case T_LONG: |
| _m()->long_field_put(fd->offset(), 0); |
| break; |
| case T_SHORT: |
| _m()->short_field_put(fd->offset(), 0); |
| break; |
| case T_BOOLEAN: |
| _m()->bool_field_put(fd->offset(), false); |
| break; |
| case T_ARRAY: |
| case T_OBJECT: { |
| // It might be useful to cache the String field, but |
| // for now just clear out any reference field |
| oop o = _m()->obj_field(fd->offset()); |
| _m()->obj_field_put(fd->offset(), NULL); |
| break; |
| } |
| default: |
| ShouldNotReachHere(); |
| break; |
| } |
| } |
| }; |
| |
| void java_lang_Class::archive_basic_type_mirrors(TRAPS) { |
| assert(HeapShared::is_heap_object_archiving_allowed(), |
| "HeapShared::is_heap_object_archiving_allowed() must be true"); |
| |
| for (int t = T_BOOLEAN; t < T_VOID+1; t++) { |
| BasicType bt = (BasicType)t; |
| oop m = Universe::_mirrors[t].resolve(); |
| if (m != NULL) { |
| // Update the field at _array_klass_offset to point to the relocated array klass. |
| oop archived_m = HeapShared::archive_heap_object(m, THREAD); |
| assert(archived_m != NULL, "sanity"); |
| Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset)); |
| assert(ak != NULL || t == T_VOID, "should not be NULL"); |
| if (ak != NULL) { |
| Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true); |
| archived_m->metadata_field_put(_array_klass_offset, reloc_ak); |
| } |
| |
| // Clear the fields. Just to be safe |
| Klass *k = m->klass(); |
| Handle archived_mirror_h(THREAD, archived_m); |
| ResetMirrorField reset(archived_mirror_h); |
| InstanceKlass::cast(k)->do_nonstatic_fields(&reset); |
| |
| log_trace(cds, heap, mirror)( |
| "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT, |
| type2name(bt), p2i(m), p2i(archived_m)); |
| |
| Universe::replace_mirror(bt, archived_m); |
| } |
| } |
| } |
| // |
| // After the mirror object is successfully archived, the archived |
| // klass is set with _has_archived_raw_mirror flag. |
| // |
| // The _has_archived_raw_mirror flag is cleared at runtime when the |
| // archived mirror is restored. If archived java heap data cannot |
| // be used at runtime, new mirror object is created for the shared |
| // class. The _has_archived_raw_mirror is cleared also during the process. |
| oop java_lang_Class::archive_mirror(Klass* k, TRAPS) { |
| assert(HeapShared::is_heap_object_archiving_allowed(), |
| "HeapShared::is_heap_object_archiving_allowed() must be true"); |
| |
| // Mirror is already archived |
| if (k->has_archived_mirror_index()) { |
| assert(k->archived_java_mirror() != NULL, "no archived mirror"); |
| return k->archived_java_mirror(); |
| } |
| |
| // No mirror |
| oop mirror = k->java_mirror(); |
| if (mirror == NULL) { |
| return NULL; |
| } |
| |
| if (k->is_instance_klass()) { |
| InstanceKlass *ik = InstanceKlass::cast(k); |
| assert(ik->signers() == NULL, "class with signer should have been excluded"); |
| |
| if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() || |
| ik->is_shared_app_class())) { |
| // Archiving mirror for classes from non-builtin loaders is not |
| // supported. |
| return NULL; |
| } |
| } |
| |
| // Now start archiving the mirror object |
| oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD); |
| if (archived_mirror == NULL) { |
| return NULL; |
| } |
| |
| archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD); |
| if (archived_mirror == NULL) { |
| return NULL; |
| } |
| |
| k->set_archived_java_mirror(archived_mirror); |
| |
| ResourceMark rm; |
| log_trace(cds, heap, mirror)( |
| "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT, |
| k->external_name(), p2i(mirror), p2i(archived_mirror)); |
| |
| return archived_mirror; |
| } |
| |
| // The process is based on create_mirror(). |
| oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror, |
| oop archived_mirror, |
| Thread *THREAD) { |
| // Clear nonstatic fields in archived mirror. Some of the fields will be set |
| // to archived metadata and objects below. |
| Klass *c = archived_mirror->klass(); |
| Handle archived_mirror_h(THREAD, archived_mirror); |
| ResetMirrorField reset(archived_mirror_h); |
| InstanceKlass::cast(c)->do_nonstatic_fields(&reset); |
| |
| if (k->is_array_klass()) { |
| oop archived_comp_mirror; |
| if (k->is_typeArray_klass()) { |
| // The primitive type mirrors are already archived. Get the archived mirror. |
| oop comp_mirror = java_lang_Class::component_mirror(mirror); |
| archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror); |
| assert(archived_comp_mirror != NULL, "Must be"); |
| } else { |
| assert(k->is_objArray_klass(), "Must be"); |
| Klass* element_klass = ObjArrayKlass::cast(k)->element_klass(); |
| assert(element_klass != NULL, "Must have an element klass"); |
| archived_comp_mirror = archive_mirror(element_klass, THREAD); |
| if (archived_comp_mirror == NULL) { |
| return NULL; |
| } |
| } |
| java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror); |
| } else { |
| assert(k->is_instance_klass(), "Must be"); |
| |
| // Reset local static fields in the mirror |
| InstanceKlass::cast(k)->do_local_static_fields(&reset); |
| |
| java_lang_Class:set_init_lock(archived_mirror, NULL); |
| |
| set_protection_domain(archived_mirror, NULL); |
| set_signers(archived_mirror, NULL); |
| set_source_file(archived_mirror, NULL); |
| } |
| |
| // clear class loader and mirror_module_field |
| set_class_loader(archived_mirror, NULL); |
| set_module(archived_mirror, NULL); |
| |
| // The archived mirror's field at _klass_offset is still pointing to the original |
| // klass. Updated the field in the archived mirror to point to the relocated |
| // klass in the archive. |
| Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true); |
| log_debug(cds, heap, mirror)( |
| "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT, |
| p2i(as_Klass(mirror)), p2i(reloc_k)); |
| archived_mirror->metadata_field_put(_klass_offset, reloc_k); |
| |
| // The field at _array_klass_offset is pointing to the original one dimension |
| // higher array klass if exists. Relocate the pointer. |
| Klass *arr = array_klass_acquire(mirror); |
| if (arr != NULL) { |
| Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true); |
| log_debug(cds, heap, mirror)( |
| "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT, |
| p2i(arr), p2i(reloc_arr)); |
| archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr); |
| } |
| return archived_mirror; |
| } |
| |
| void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) { |
| if (MetaspaceShared::relocation_delta() != 0) { |
| assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class"); |
| |
| Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset)); |
| if (ak != NULL) { |
| archived_mirror->metadata_field_put(_array_klass_offset, |
| (Klass*)(address(ak) + MetaspaceShared::relocation_delta())); |
| } |
| } |
| } |
| |
| void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) { |
| assert(MetaspaceShared::relocation_delta() != 0, "must be"); |
| |
| Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset)); |
| archived_mirror->metadata_field_put(_klass_offset, |
| (Klass*)(address(k) + MetaspaceShared::relocation_delta())); |
| |
| Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset)); |
| if (ak != NULL) { |
| archived_mirror->metadata_field_put(_array_klass_offset, |
| (Klass*)(address(ak) + MetaspaceShared::relocation_delta())); |
| } |
| } |
| |
| |
| // Returns true if the mirror is updated, false if no archived mirror |
| // data is present. After the archived mirror object is restored, the |
| // shared klass' _has_raw_archived_mirror flag is cleared. |
| bool java_lang_Class::restore_archived_mirror(Klass *k, |
| Handle class_loader, Handle module, |
| Handle protection_domain, TRAPS) { |
| // Postpone restoring archived mirror until java.lang.Class is loaded. Please |
| // see more details in SystemDictionary::resolve_well_known_classes(). |
| if (!SystemDictionary::Class_klass_loaded()) { |
| assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized"); |
| fixup_mirror_list()->push(k); |
| return true; |
| } |
| |
| oop m = k->archived_java_mirror(); |
| assert(m != NULL, "must have stored non-null archived mirror"); |
| |
| // Sanity: clear it now to prevent re-initialization if any of the following fails |
| k->clear_archived_mirror_index(); |
| |
| // mirror is archived, restore |
| log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m)); |
| assert(HeapShared::is_archived_object(m), "must be archived mirror object"); |
| assert(as_Klass(m) == k, "must be"); |
| Handle mirror(THREAD, m); |
| |
| if (!k->is_array_klass()) { |
| // - local static final fields with initial values were initialized at dump time |
| |
| // create the init_lock |
| typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false)); |
| set_init_lock(mirror(), r); |
| |
| if (protection_domain.not_null()) { |
| set_protection_domain(mirror(), protection_domain()); |
| } |
| } |
| |
| assert(class_loader() == k->class_loader(), "should be same"); |
| if (class_loader.not_null()) { |
| set_class_loader(mirror(), class_loader()); |
| } |
| |
| k->set_java_mirror(mirror); |
| |
| set_mirror_module_field(k, mirror, module, THREAD); |
| |
| if (log_is_enabled(Trace, cds, heap, mirror)) { |
| ResourceMark rm(THREAD); |
| log_trace(cds, heap, mirror)( |
| "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror())); |
| } |
| |
| return true; |
| } |
| #endif // INCLUDE_CDS_JAVA_HEAP |
| |
| void java_lang_Class::fixup_module_field(Klass* k, Handle module) { |
| assert(_module_offset != 0, "must have been computed already"); |
| java_lang_Class::set_module(k->java_mirror(), module()); |
| } |
| |
| int java_lang_Class::oop_size(oop java_class) { |
| assert(_oop_size_offset != 0, "must be set"); |
| int size = java_class->int_field(_oop_size_offset); |
| assert(size > 0, "Oop size must be greater than zero, not %d", size); |
| return size; |
| } |
| |
| |
| void java_lang_Class::set_oop_size(HeapWord* java_class, int size) { |
| assert(_oop_size_offset != 0, "must be set"); |
| assert(size > 0, "Oop size must be greater than zero, not %d", size); |
| *(int*)(((char*)java_class) + _oop_size_offset) = size; |
| } |
| |
| int java_lang_Class::static_oop_field_count(oop java_class) { |
| assert(_static_oop_field_count_offset != 0, "must be set"); |
| return java_class->int_field(_static_oop_field_count_offset); |
| } |
| |
| int java_lang_Class::static_oop_field_count_raw(oop java_class) { |
| assert(_static_oop_field_count_offset != 0, "must be set"); |
| return java_class->int_field_raw(_static_oop_field_count_offset); |
| } |
| |
| void java_lang_Class::set_static_oop_field_count(oop java_class, int size) { |
| assert(_static_oop_field_count_offset != 0, "must be set"); |
| java_class->int_field_put(_static_oop_field_count_offset, size); |
| } |
| |
| oop java_lang_Class::protection_domain(oop java_class) { |
| assert(_protection_domain_offset != 0, "must be set"); |
| return java_class->obj_field(_protection_domain_offset); |
| } |
| void java_lang_Class::set_protection_domain(oop java_class, oop pd) { |
| assert(_protection_domain_offset != 0, "must be set"); |
| java_class->obj_field_put(_protection_domain_offset, pd); |
| } |
| |
| void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) { |
| assert(_component_mirror_offset != 0, "must be set"); |
| java_class->obj_field_put(_component_mirror_offset, comp_mirror); |
| } |
| oop java_lang_Class::component_mirror(oop java_class) { |
| assert(_component_mirror_offset != 0, "must be set"); |
| return java_class->obj_field(_component_mirror_offset); |
| } |
| |
| oop java_lang_Class::init_lock(oop java_class) { |
| assert(_init_lock_offset != 0, "must be set"); |
| return java_class->obj_field(_init_lock_offset); |
| } |
| void java_lang_Class::set_init_lock(oop java_class, oop init_lock) { |
| assert(_init_lock_offset != 0, "must be set"); |
| java_class->obj_field_put(_init_lock_offset, init_lock); |
| } |
| |
| objArrayOop java_lang_Class::signers(oop java_class) { |
| assert(_signers_offset != 0, "must be set"); |
| return (objArrayOop)java_class->obj_field(_signers_offset); |
| } |
| void java_lang_Class::set_signers(oop java_class, objArrayOop signers) { |
| assert(_signers_offset != 0, "must be set"); |
| java_class->obj_field_put(_signers_offset, (oop)signers); |
| } |
| |
| oop java_lang_Class::class_data(oop java_class) { |
| assert(_classData_offset != 0, "must be set"); |
| return java_class->obj_field(_classData_offset); |
| } |
| void java_lang_Class::set_class_data(oop java_class, oop class_data) { |
| assert(_classData_offset != 0, "must be set"); |
| java_class->obj_field_put(_classData_offset, class_data); |
| } |
| |
| void java_lang_Class::set_class_loader(oop java_class, oop loader) { |
| assert(_class_loader_offset != 0, "offsets should have been initialized"); |
| java_class->obj_field_put(_class_loader_offset, loader); |
| } |
| |
| oop java_lang_Class::class_loader(oop java_class) { |
| assert(_class_loader_offset != 0, "must be set"); |
| return java_class->obj_field(_class_loader_offset); |
| } |
| |
| oop java_lang_Class::module(oop java_class) { |
| assert(_module_offset != 0, "must be set"); |
| return java_class->obj_field(_module_offset); |
| } |
| |
| void java_lang_Class::set_module(oop java_class, oop module) { |
| assert(_module_offset != 0, "must be set"); |
| java_class->obj_field_put(_module_offset, module); |
| } |
| |
| oop java_lang_Class::name(Handle java_class, TRAPS) { |
| assert(_name_offset != 0, "must be set"); |
| oop o = java_class->obj_field(_name_offset); |
| if (o == NULL) { |
| o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD); |
| java_class->obj_field_put(_name_offset, o); |
| } |
| return o; |
| } |
| |
| oop java_lang_Class::source_file(oop java_class) { |
| assert(_source_file_offset != 0, "must be set"); |
| return java_class->obj_field(_source_file_offset); |
| } |
| |
| void java_lang_Class::set_source_file(oop java_class, oop source_file) { |
| assert(_source_file_offset != 0, "must be set"); |
| java_class->obj_field_put(_source_file_offset, source_file); |
| } |
| |
| oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { |
| // This should be improved by adding a field at the Java level or by |
| // introducing a new VM klass (see comment in ClassFileParser) |
| oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL); |
| if (type != T_VOID) { |
| Klass* aklass = Universe::typeArrayKlassObj(type); |
| assert(aklass != NULL, "correct bootstrap"); |
| release_set_array_klass(java_class, aklass); |
| } |
| #ifdef ASSERT |
| InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass()); |
| assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation"); |
| #endif |
| return java_class; |
| } |
| |
| |
| Klass* java_lang_Class::as_Klass_raw(oop java_class) { |
| //%note memory_2 |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset)); |
| assert(k == NULL || k->is_klass(), "type check"); |
| return k; |
| } |
| |
| |
| void java_lang_Class::set_klass(oop java_class, Klass* klass) { |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| java_class->metadata_field_put(_klass_offset, klass); |
| } |
| |
| |
| void java_lang_Class::print_signature(oop java_class, outputStream* st) { |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| Symbol* name = NULL; |
| bool is_instance = false; |
| if (is_primitive(java_class)) { |
| name = vmSymbols::type_signature(primitive_type(java_class)); |
| } else { |
| Klass* k = as_Klass(java_class); |
| is_instance = k->is_instance_klass(); |
| name = k->name(); |
| } |
| if (name == NULL) { |
| st->print("<null>"); |
| return; |
| } |
| if (is_instance) st->print("L"); |
| st->write((char*) name->base(), (int) name->utf8_length()); |
| if (is_instance) st->print(";"); |
| } |
| |
| Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) { |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| Symbol* name; |
| if (is_primitive(java_class)) { |
| name = vmSymbols::type_signature(primitive_type(java_class)); |
| // Because this can create a new symbol, the caller has to decrement |
| // the refcount, so make adjustment here and below for symbols returned |
| // that are not created or incremented due to a successful lookup. |
| name->increment_refcount(); |
| } else { |
| Klass* k = as_Klass(java_class); |
| if (!k->is_instance_klass()) { |
| name = k->name(); |
| name->increment_refcount(); |
| } else { |
| ResourceMark rm; |
| const char* sigstr = k->signature_name(); |
| int siglen = (int) strlen(sigstr); |
| if (!intern_if_not_found) { |
| name = SymbolTable::probe(sigstr, siglen); |
| } else { |
| name = SymbolTable::new_symbol(sigstr, siglen); |
| } |
| } |
| } |
| return name; |
| } |
| |
| // Returns the Java name for this Java mirror (Resource allocated) |
| // See Klass::external_name(). |
| // For primitive type Java mirrors, its type name is returned. |
| const char* java_lang_Class::as_external_name(oop java_class) { |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| const char* name = NULL; |
| if (is_primitive(java_class)) { |
| name = type2name(primitive_type(java_class)); |
| } else { |
| name = as_Klass(java_class)->external_name(); |
| } |
| if (name == NULL) { |
| name = "<null>"; |
| } |
| return name; |
| } |
| |
| Klass* java_lang_Class::array_klass_acquire(oop java_class) { |
| Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset)); |
| assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass"); |
| return k; |
| } |
| |
| |
| void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) { |
| assert(klass->is_klass() && klass->is_array_klass(), "should be array klass"); |
| java_class->release_metadata_field_put(_array_klass_offset, klass); |
| } |
| |
| |
| BasicType java_lang_Class::primitive_type(oop java_class) { |
| assert(java_lang_Class::is_primitive(java_class), "just checking"); |
| Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset)); |
| BasicType type = T_VOID; |
| if (ak != NULL) { |
| // Note: create_basic_type_mirror above initializes ak to a non-null value. |
| type = ArrayKlass::cast(ak)->element_type(); |
| } else { |
| assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); |
| } |
| assert(Universe::java_mirror(type) == java_class, "must be consistent"); |
| return type; |
| } |
| |
| BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) { |
| assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| if (is_primitive(java_class)) { |
| if (reference_klass != NULL) |
| (*reference_klass) = NULL; |
| return primitive_type(java_class); |
| } else { |
| if (reference_klass != NULL) |
| (*reference_klass) = as_Klass(java_class); |
| return T_OBJECT; |
| } |
| } |
| |
| |
| oop java_lang_Class::primitive_mirror(BasicType t) { |
| oop mirror = Universe::java_mirror(t); |
| assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class"); |
| assert(java_lang_Class::is_primitive(mirror), "must be primitive"); |
| return mirror; |
| } |
| |
| #define CLASS_FIELDS_DO(macro) \ |
| macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \ |
| macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \ |
| macro(_component_mirror_offset, k, "componentType", class_signature, false); \ |
| macro(_module_offset, k, "module", module_signature, false); \ |
| macro(_name_offset, k, "name", string_signature, false); \ |
| macro(_classData_offset, k, "classData", object_signature, false); |
| |
| void java_lang_Class::compute_offsets() { |
| if (_offsets_computed) { |
| return; |
| } |
| |
| _offsets_computed = true; |
| |
| InstanceKlass* k = SystemDictionary::Class_klass(); |
| CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| |
| // Init lock is a C union with component_mirror. Only instanceKlass mirrors have |
| // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops |
| // GC treats them the same. |
| _init_lock_offset = _component_mirror_offset; |
| |
| CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Class::serialize_offsets(SerializeClosure* f) { |
| f->do_bool(&_offsets_computed); |
| f->do_u4((u4*)&_init_lock_offset); |
| |
| CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| |
| CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| int java_lang_Class::classRedefinedCount(oop the_class_mirror) { |
| assert(_classRedefinedCount_offset != 0, "offsets should have been initialized"); |
| return the_class_mirror->int_field(_classRedefinedCount_offset); |
| } |
| |
| void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { |
| assert(_classRedefinedCount_offset != 0, "offsets should have been initialized"); |
| the_class_mirror->int_field_put(_classRedefinedCount_offset, value); |
| } |
| |
| |
| // Note: JDK1.1 and before had a privateInfo_offset field which was used for the |
| // platform thread structure, and a eetop offset which was used for thread |
| // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures |
| // merged, so in the HotSpot VM we just use the eetop field for the thread |
| // instead of the privateInfo_offset. |
| // |
| // Note: The stackSize field is only present starting in 1.4. |
| |
| int java_lang_Thread::_name_offset; |
| int java_lang_Thread::_group_offset; |
| int java_lang_Thread::_contextClassLoader_offset; |
| int java_lang_Thread::_inheritedAccessControlContext_offset; |
| int java_lang_Thread::_priority_offset; |
| int java_lang_Thread::_eetop_offset; |
| int java_lang_Thread::_interrupted_offset; |
| int java_lang_Thread::_daemon_offset; |
| int java_lang_Thread::_stillborn_offset; |
| int java_lang_Thread::_stackSize_offset; |
| int java_lang_Thread::_tid_offset; |
| int java_lang_Thread::_thread_status_offset; |
| int java_lang_Thread::_park_blocker_offset; |
| |
| #define THREAD_FIELDS_DO(macro) \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \ |
| macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \ |
| macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \ |
| macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \ |
| macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \ |
| macro(_eetop_offset, k, "eetop", long_signature, false); \ |
| macro(_interrupted_offset, k, "interrupted", bool_signature, false); \ |
| macro(_stillborn_offset, k, "stillborn", bool_signature, false); \ |
| macro(_stackSize_offset, k, "stackSize", long_signature, false); \ |
| macro(_tid_offset, k, "tid", long_signature, false); \ |
| macro(_thread_status_offset, k, "threadStatus", int_signature, false); \ |
| macro(_park_blocker_offset, k, "parkBlocker", object_signature, false) |
| |
| void java_lang_Thread::compute_offsets() { |
| assert(_group_offset == 0, "offsets should be initialized only once"); |
| |
| InstanceKlass* k = SystemDictionary::Thread_klass(); |
| THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Thread::serialize_offsets(SerializeClosure* f) { |
| THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| JavaThread* java_lang_Thread::thread(oop java_thread) { |
| return (JavaThread*)java_thread->address_field(_eetop_offset); |
| } |
| |
| |
| void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { |
| java_thread->address_field_put(_eetop_offset, (address)thread); |
| } |
| |
| bool java_lang_Thread::interrupted(oop java_thread) { |
| // Make sure the caller can safely access oops. |
| assert(Thread::current()->is_VM_thread() || |
| (JavaThread::current()->thread_state() != _thread_blocked && |
| JavaThread::current()->thread_state() != _thread_in_native), |
| "Unsafe access to oop"); |
| return java_thread->bool_field_volatile(_interrupted_offset); |
| } |
| |
| void java_lang_Thread::set_interrupted(oop java_thread, bool val) { |
| // Make sure the caller can safely access oops. |
| assert(Thread::current()->is_VM_thread() || |
| (JavaThread::current()->thread_state() != _thread_blocked && |
| JavaThread::current()->thread_state() != _thread_in_native), |
| "Unsafe access to oop"); |
| java_thread->bool_field_put_volatile(_interrupted_offset, val); |
| } |
| |
| |
| oop java_lang_Thread::name(oop java_thread) { |
| return java_thread->obj_field(_name_offset); |
| } |
| |
| |
| void java_lang_Thread::set_name(oop java_thread, oop name) { |
| java_thread->obj_field_put(_name_offset, name); |
| } |
| |
| |
| ThreadPriority java_lang_Thread::priority(oop java_thread) { |
| return (ThreadPriority)java_thread->int_field(_priority_offset); |
| } |
| |
| |
| void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { |
| java_thread->int_field_put(_priority_offset, priority); |
| } |
| |
| |
| oop java_lang_Thread::threadGroup(oop java_thread) { |
| return java_thread->obj_field(_group_offset); |
| } |
| |
| |
| bool java_lang_Thread::is_stillborn(oop java_thread) { |
| return java_thread->bool_field(_stillborn_offset) != 0; |
| } |
| |
| |
| // We never have reason to turn the stillborn bit off |
| void java_lang_Thread::set_stillborn(oop java_thread) { |
| java_thread->bool_field_put(_stillborn_offset, true); |
| } |
| |
| |
| bool java_lang_Thread::is_alive(oop java_thread) { |
| JavaThread* thr = java_lang_Thread::thread(java_thread); |
| return (thr != NULL); |
| } |
| |
| |
| bool java_lang_Thread::is_daemon(oop java_thread) { |
| return java_thread->bool_field(_daemon_offset) != 0; |
| } |
| |
| |
| void java_lang_Thread::set_daemon(oop java_thread) { |
| java_thread->bool_field_put(_daemon_offset, true); |
| } |
| |
| oop java_lang_Thread::context_class_loader(oop java_thread) { |
| return java_thread->obj_field(_contextClassLoader_offset); |
| } |
| |
| oop java_lang_Thread::inherited_access_control_context(oop java_thread) { |
| return java_thread->obj_field(_inheritedAccessControlContext_offset); |
| } |
| |
| |
| jlong java_lang_Thread::stackSize(oop java_thread) { |
| return java_thread->long_field(_stackSize_offset); |
| } |
| |
| // Write the thread status value to threadStatus field in java.lang.Thread java class. |
| void java_lang_Thread::set_thread_status(oop java_thread, |
| JavaThreadStatus status) { |
| java_thread->int_field_put(_thread_status_offset, static_cast<int>(status)); |
| } |
| |
| // Read thread status value from threadStatus field in java.lang.Thread java class. |
| JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { |
| // Make sure the caller is operating on behalf of the VM or is |
| // running VM code (state == _thread_in_vm). |
| assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() || |
| JavaThread::current()->thread_state() == _thread_in_vm, |
| "Java Thread is not running in vm"); |
| return static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset)); |
| } |
| |
| |
| jlong java_lang_Thread::thread_id(oop java_thread) { |
| return java_thread->long_field(_tid_offset); |
| } |
| |
| oop java_lang_Thread::park_blocker(oop java_thread) { |
| return java_thread->obj_field(_park_blocker_offset); |
| } |
| |
| const char* java_lang_Thread::thread_status_name(oop java_thread) { |
| JavaThreadStatus status = static_cast<JavaThreadStatus>(java_thread->int_field(_thread_status_offset)); |
| switch (status) { |
| case JavaThreadStatus::NEW : return "NEW"; |
| case JavaThreadStatus::RUNNABLE : return "RUNNABLE"; |
| case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)"; |
| case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)"; |
| case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; |
| case JavaThreadStatus::PARKED : return "WAITING (parking)"; |
| case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)"; |
| case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; |
| case JavaThreadStatus::TERMINATED : return "TERMINATED"; |
| default : return "UNKNOWN"; |
| }; |
| } |
| int java_lang_ThreadGroup::_parent_offset; |
| int java_lang_ThreadGroup::_name_offset; |
| int java_lang_ThreadGroup::_threads_offset; |
| int java_lang_ThreadGroup::_groups_offset; |
| int java_lang_ThreadGroup::_maxPriority_offset; |
| int java_lang_ThreadGroup::_destroyed_offset; |
| int java_lang_ThreadGroup::_daemon_offset; |
| int java_lang_ThreadGroup::_nthreads_offset; |
| int java_lang_ThreadGroup::_ngroups_offset; |
| |
| oop java_lang_ThreadGroup::parent(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return java_thread_group->obj_field(_parent_offset); |
| } |
| |
| // ("name as oop" accessor is not necessary) |
| |
| const char* java_lang_ThreadGroup::name(oop java_thread_group) { |
| oop name = java_thread_group->obj_field(_name_offset); |
| // ThreadGroup.name can be null |
| if (name != NULL) { |
| return java_lang_String::as_utf8_string(name); |
| } |
| return NULL; |
| } |
| |
| int java_lang_ThreadGroup::nthreads(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return java_thread_group->int_field(_nthreads_offset); |
| } |
| |
| objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { |
| oop threads = java_thread_group->obj_field(_threads_offset); |
| assert(threads != NULL, "threadgroups should have threads"); |
| assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code |
| return objArrayOop(threads); |
| } |
| |
| int java_lang_ThreadGroup::ngroups(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return java_thread_group->int_field(_ngroups_offset); |
| } |
| |
| objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { |
| oop groups = java_thread_group->obj_field(_groups_offset); |
| assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code |
| return objArrayOop(groups); |
| } |
| |
| ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); |
| } |
| |
| bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return java_thread_group->bool_field(_destroyed_offset) != 0; |
| } |
| |
| bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { |
| assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); |
| return java_thread_group->bool_field(_daemon_offset) != 0; |
| } |
| |
| #define THREADGROUP_FIELDS_DO(macro) \ |
| macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \ |
| macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \ |
| macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \ |
| macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \ |
| macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \ |
| macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \ |
| macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false) |
| |
| void java_lang_ThreadGroup::compute_offsets() { |
| assert(_parent_offset == 0, "offsets should be initialized only once"); |
| |
| InstanceKlass* k = SystemDictionary::ThreadGroup_klass(); |
| THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) { |
| THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| // java_lang_Throwable |
| |
| int java_lang_Throwable::_backtrace_offset; |
| int java_lang_Throwable::_detailMessage_offset; |
| int java_lang_Throwable::_stackTrace_offset; |
| int java_lang_Throwable::_depth_offset; |
| int java_lang_Throwable::_static_unassigned_stacktrace_offset; |
| |
| #define THROWABLE_FIELDS_DO(macro) \ |
| macro(_backtrace_offset, k, "backtrace", object_signature, false); \ |
| macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \ |
| macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \ |
| macro(_depth_offset, k, "depth", int_signature, false); \ |
| macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true) |
| |
| void java_lang_Throwable::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::Throwable_klass(); |
| THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Throwable::serialize_offsets(SerializeClosure* f) { |
| THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_lang_Throwable::unassigned_stacktrace() { |
| InstanceKlass* ik = SystemDictionary::Throwable_klass(); |
| oop base = ik->static_field_base_raw(); |
| return base->obj_field(_static_unassigned_stacktrace_offset); |
| } |
| |
| oop java_lang_Throwable::backtrace(oop throwable) { |
| return throwable->obj_field_acquire(_backtrace_offset); |
| } |
| |
| |
| void java_lang_Throwable::set_backtrace(oop throwable, oop value) { |
| throwable->release_obj_field_put(_backtrace_offset, value); |
| } |
| |
| int java_lang_Throwable::depth(oop throwable) { |
| return throwable->int_field(_depth_offset); |
| } |
| |
| void java_lang_Throwable::set_depth(oop throwable, int value) { |
| throwable->int_field_put(_depth_offset, value); |
| } |
| |
| oop java_lang_Throwable::message(oop throwable) { |
| return throwable->obj_field(_detailMessage_offset); |
| } |
| |
| |
| // Return Symbol for detailed_message or NULL |
| Symbol* java_lang_Throwable::detail_message(oop throwable) { |
| PRESERVE_EXCEPTION_MARK; // Keep original exception |
| oop detailed_message = java_lang_Throwable::message(throwable); |
| if (detailed_message != NULL) { |
| return java_lang_String::as_symbol(detailed_message); |
| } |
| return NULL; |
| } |
| |
| void java_lang_Throwable::set_message(oop throwable, oop value) { |
| throwable->obj_field_put(_detailMessage_offset, value); |
| } |
| |
| |
| void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) { |
| throwable->obj_field_put(_stackTrace_offset, st_element_array); |
| } |
| |
| void java_lang_Throwable::clear_stacktrace(oop throwable) { |
| set_stacktrace(throwable, NULL); |
| } |
| |
| |
| void java_lang_Throwable::print(oop throwable, outputStream* st) { |
| ResourceMark rm; |
| Klass* k = throwable->klass(); |
| assert(k != NULL, "just checking"); |
| st->print("%s", k->external_name()); |
| oop msg = message(throwable); |
| if (msg != NULL) { |
| st->print(": %s", java_lang_String::as_utf8_string(msg)); |
| } |
| } |
| |
| // After this many redefines, the stack trace is unreliable. |
| const int MAX_VERSION = USHRT_MAX; |
| |
| static inline bool version_matches(Method* method, int version) { |
| assert(version < MAX_VERSION, "version is too big"); |
| return method != NULL && (method->constants()->version() == version); |
| } |
| |
| // This class provides a simple wrapper over the internal structure of |
| // exception backtrace to insulate users of the backtrace from needing |
| // to know what it looks like. |
| // The code of this class is not GC safe. Allocations can only happen |
| // in expand(). |
| class BacktraceBuilder: public StackObj { |
| friend class BacktraceIterator; |
| private: |
| Handle _backtrace; |
| objArrayOop _head; |
| typeArrayOop _methods; |
| typeArrayOop _bcis; |
| objArrayOop _mirrors; |
| typeArrayOop _names; // Needed to insulate method name against redefinition. |
| // True if the top frame of the backtrace is omitted because it shall be hidden. |
| bool _has_hidden_top_frame; |
| int _index; |
| NoSafepointVerifier _nsv; |
| |
| enum { |
| trace_methods_offset = java_lang_Throwable::trace_methods_offset, |
| trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, |
| trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset, |
| trace_names_offset = java_lang_Throwable::trace_names_offset, |
| trace_next_offset = java_lang_Throwable::trace_next_offset, |
| trace_hidden_offset = java_lang_Throwable::trace_hidden_offset, |
| trace_size = java_lang_Throwable::trace_size, |
| trace_chunk_size = java_lang_Throwable::trace_chunk_size |
| }; |
| |
| // get info out of chunks |
| static typeArrayOop get_methods(objArrayHandle chunk) { |
| typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset)); |
| assert(methods != NULL, "method array should be initialized in backtrace"); |
| return methods; |
| } |
| static typeArrayOop get_bcis(objArrayHandle chunk) { |
| typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); |
| assert(bcis != NULL, "bci array should be initialized in backtrace"); |
| return bcis; |
| } |
| static objArrayOop get_mirrors(objArrayHandle chunk) { |
| objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset)); |
| assert(mirrors != NULL, "mirror array should be initialized in backtrace"); |
| return mirrors; |
| } |
| static typeArrayOop get_names(objArrayHandle chunk) { |
| typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset)); |
| assert(names != NULL, "names array should be initialized in backtrace"); |
| return names; |
| } |
| static bool has_hidden_top_frame(objArrayHandle chunk) { |
| oop hidden = chunk->obj_at(trace_hidden_offset); |
| return hidden != NULL; |
| } |
| |
| public: |
| |
| // constructor for new backtrace |
| BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) { |
| expand(CHECK); |
| _backtrace = Handle(THREAD, _head); |
| _index = 0; |
| } |
| |
| BacktraceBuilder(Thread* thread, objArrayHandle backtrace) { |
| _methods = get_methods(backtrace); |
| _bcis = get_bcis(backtrace); |
| _mirrors = get_mirrors(backtrace); |
| _names = get_names(backtrace); |
| _has_hidden_top_frame = has_hidden_top_frame(backtrace); |
| assert(_methods->length() == _bcis->length() && |
| _methods->length() == _mirrors->length() && |
| _mirrors->length() == _names->length(), |
| "method and source information arrays should match"); |
| |
| // head is the preallocated backtrace |
| _head = backtrace(); |
| _backtrace = Handle(thread, _head); |
| _index = 0; |
| } |
| |
| void expand(TRAPS) { |
| objArrayHandle old_head(THREAD, _head); |
| PauseNoSafepointVerifier pnsv(&_nsv); |
| |
| objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); |
| objArrayHandle new_head(THREAD, head); |
| |
| typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
| typeArrayHandle new_methods(THREAD, methods); |
| |
| typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK); |
| typeArrayHandle new_bcis(THREAD, bcis); |
| |
| objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK); |
| objArrayHandle new_mirrors(THREAD, mirrors); |
| |
| typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK); |
| typeArrayHandle new_names(THREAD, names); |
| |
| if (!old_head.is_null()) { |
| old_head->obj_at_put(trace_next_offset, new_head()); |
| } |
| new_head->obj_at_put(trace_methods_offset, new_methods()); |
| new_head->obj_at_put(trace_bcis_offset, new_bcis()); |
| new_head->obj_at_put(trace_mirrors_offset, new_mirrors()); |
| new_head->obj_at_put(trace_names_offset, new_names()); |
| new_head->obj_at_put(trace_hidden_offset, NULL); |
| |
| _head = new_head(); |
| _methods = new_methods(); |
| _bcis = new_bcis(); |
| _mirrors = new_mirrors(); |
| _names = new_names(); |
| _index = 0; |
| } |
| |
| oop backtrace() { |
| return _backtrace(); |
| } |
| |
| inline void push(Method* method, int bci, TRAPS) { |
| // Smear the -1 bci to 0 since the array only holds unsigned |
| // shorts. The later line number lookup would just smear the -1 |
| // to a 0 even if it could be recorded. |
| if (bci == SynchronizationEntryBCI) bci = 0; |
| |
| if (_index >= trace_chunk_size) { |
| methodHandle mhandle(THREAD, method); |
| expand(CHECK); |
| method = mhandle(); |
| } |
| |
| _methods->ushort_at_put(_index, method->orig_method_idnum()); |
| _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version())); |
| |
| // Note:this doesn't leak symbols because the mirror in the backtrace keeps the |
| // klass owning the symbols alive so their refcounts aren't decremented. |
| Symbol* name = method->name(); |
| _names->symbol_at_put(_index, name); |
| |
| // We need to save the mirrors in the backtrace to keep the class |
| // from being unloaded while we still have this stack trace. |
| assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror"); |
| _mirrors->obj_at_put(_index, method->method_holder()->java_mirror()); |
| _index++; |
| } |
| |
| void set_has_hidden_top_frame(TRAPS) { |
| if (!_has_hidden_top_frame) { |
| // It would be nice to add java/lang/Boolean::TRUE here |
| // to indicate that this backtrace has a hidden top frame. |
| // But this code is used before TRUE is allocated. |
| // Therefore let's just use an arbitrary legal oop |
| // available right here. _methods is a short[]. |
| assert(_methods != NULL, "we need a legal oop"); |
| _has_hidden_top_frame = true; |
| _head->obj_at_put(trace_hidden_offset, _methods); |
| } |
| } |
| }; |
| |
| struct BacktraceElement : public StackObj { |
| int _method_id; |
| int _bci; |
| int _version; |
| Symbol* _name; |
| Handle _mirror; |
| BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) : |
| _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {} |
| }; |
| |
| class BacktraceIterator : public StackObj { |
| int _index; |
| objArrayHandle _result; |
| objArrayHandle _mirrors; |
| typeArrayHandle _methods; |
| typeArrayHandle _bcis; |
| typeArrayHandle _names; |
| |
| void init(objArrayHandle result, Thread* thread) { |
| // Get method id, bci, version and mirror from chunk |
| _result = result; |
| if (_result.not_null()) { |
| _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result)); |
| _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result)); |
| _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result)); |
| _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result)); |
| _index = 0; |
| } |
| } |
| public: |
| BacktraceIterator(objArrayHandle result, Thread* thread) { |
| init(result, thread); |
| assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match"); |
| } |
| |
| BacktraceElement next(Thread* thread) { |
| BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)), |
| _methods->ushort_at(_index), |
| Backtrace::version_at(_bcis->int_at(_index)), |
| Backtrace::bci_at(_bcis->int_at(_index)), |
| _names->symbol_at(_index)); |
| _index++; |
| |
| if (_index >= java_lang_Throwable::trace_chunk_size) { |
| int next_offset = java_lang_Throwable::trace_next_offset; |
| // Get next chunk |
| objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset))); |
| init(result, thread); |
| } |
| return e; |
| } |
| |
| bool repeat() { |
| return _result.not_null() && _mirrors->obj_at(_index) != NULL; |
| } |
| }; |
| |
| |
| // Print stack trace element to resource allocated buffer |
| static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id, |
| int version, int bci, Symbol* name) { |
| ResourceMark rm; |
| |
| // Get strings and string lengths |
| InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror())); |
| const char* klass_name = holder->external_name(); |
| int buf_len = (int)strlen(klass_name); |
| |
| char* method_name = name->as_C_string(); |
| buf_len += (int)strlen(method_name); |
| |
| char* source_file_name = NULL; |
| Symbol* source = Backtrace::get_source_file_name(holder, version); |
| if (source != NULL) { |
| source_file_name = source->as_C_string(); |
| buf_len += (int)strlen(source_file_name); |
| } |
| |
| char *module_name = NULL, *module_version = NULL; |
| ModuleEntry* module = holder->module(); |
| if (module->is_named()) { |
| module_name = module->name()->as_C_string(); |
| buf_len += (int)strlen(module_name); |
| if (module->version() != NULL) { |
| module_version = module->version()->as_C_string(); |
| buf_len += (int)strlen(module_version); |
| } |
| } |
| |
| // Allocate temporary buffer with extra space for formatting and line number |
| char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); |
| |
| // Print stack trace line in buffer |
| sprintf(buf, "\tat %s.%s(", klass_name, method_name); |
| |
| // Print module information |
| if (module_name != NULL) { |
| if (module_version != NULL) { |
| sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version); |
| } else { |
| sprintf(buf + (int)strlen(buf), "%s/", module_name); |
| } |
| } |
| |
| // The method can be NULL if the requested class version is gone |
| Method* method = holder->method_with_orig_idnum(method_id, version); |
| if (!version_matches(method, version)) { |
| strcat(buf, "Redefined)"); |
| } else { |
| int line_number = Backtrace::get_line_number(method, bci); |
| if (line_number == -2) { |
| strcat(buf, "Native Method)"); |
| } else { |
| if (source_file_name != NULL && (line_number != -1)) { |
| // Sourcename and linenumber |
| sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number); |
| } else if (source_file_name != NULL) { |
| // Just sourcename |
| sprintf(buf + (int)strlen(buf), "%s)", source_file_name); |
| } else { |
| // Neither sourcename nor linenumber |
| sprintf(buf + (int)strlen(buf), "Unknown Source)"); |
| } |
| CompiledMethod* nm = method->code(); |
| if (WizardMode && nm != NULL) { |
| sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm); |
| } |
| } |
| } |
| |
| st->print_cr("%s", buf); |
| } |
| |
| void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) { |
| Handle mirror (Thread::current(), method->method_holder()->java_mirror()); |
| int method_id = method->orig_method_idnum(); |
| int version = method->constants()->version(); |
| print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name()); |
| } |
| |
| /** |
| * Print the throwable message and its stack trace plus all causes by walking the |
| * cause chain. The output looks the same as of Throwable.printStackTrace(). |
| */ |
| void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) { |
| // First, print the message. |
| print(throwable(), st); |
| st->cr(); |
| |
| // Now print the stack trace. |
| Thread* THREAD = Thread::current(); |
| while (throwable.not_null()) { |
| objArrayHandle result (THREAD, objArrayOop(backtrace(throwable()))); |
| if (result.is_null()) { |
| st->print_raw_cr("\t<<no stack trace available>>"); |
| return; |
| } |
| BacktraceIterator iter(result, THREAD); |
| |
| while (iter.repeat()) { |
| BacktraceElement bte = iter.next(THREAD); |
| print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name); |
| } |
| { |
| // Call getCause() which doesn't necessarily return the _cause field. |
| EXCEPTION_MARK; |
| JavaValue cause(T_OBJECT); |
| JavaCalls::call_virtual(&cause, |
| throwable, |
| throwable->klass(), |
| vmSymbols::getCause_name(), |
| vmSymbols::void_throwable_signature(), |
| THREAD); |
| // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. |
| if (HAS_PENDING_EXCEPTION) { |
| CLEAR_PENDING_EXCEPTION; |
| throwable = Handle(); |
| } else { |
| throwable = Handle(THREAD, (oop) cause.get_jobject()); |
| if (throwable.not_null()) { |
| st->print("Caused by: "); |
| print(throwable(), st); |
| st->cr(); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace(). |
| */ |
| void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) { |
| assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected"); |
| JavaValue result(T_VOID); |
| JavaCalls::call_virtual(&result, |
| throwable, |
| SystemDictionary::Throwable_klass(), |
| vmSymbols::printStackTrace_name(), |
| vmSymbols::void_method_signature(), |
| THREAD); |
| } |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) { |
| if (!StackTraceInThrowable) return; |
| ResourceMark rm(THREAD); |
| |
| // Start out by clearing the backtrace for this object, in case the VM |
| // runs out of memory while allocating the stack trace |
| set_backtrace(throwable(), NULL); |
| // Clear lazily constructed Java level stacktrace if refilling occurs |
| // This is unnecessary in 1.7+ but harmless |
| clear_stacktrace(throwable()); |
| |
| int max_depth = MaxJavaStackTraceDepth; |
| JavaThread* thread = THREAD->as_Java_thread(); |
| |
| BacktraceBuilder bt(CHECK); |
| |
| // If there is no Java frame just return the method that was being called |
| // with bci 0 |
| if (!thread->has_last_Java_frame()) { |
| if (max_depth >= 1 && method() != NULL) { |
| bt.push(method(), 0, CHECK); |
| log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1); |
| set_depth(throwable(), 1); |
| set_backtrace(throwable(), bt.backtrace()); |
| } |
| return; |
| } |
| |
| // Instead of using vframe directly, this version of fill_in_stack_trace |
| // basically handles everything by hand. This significantly improved the |
| // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. |
| // See bug 6333838 for more details. |
| // The "ASSERT" here is to verify this method generates the exactly same stack |
| // trace as utilizing vframe. |
| #ifdef ASSERT |
| vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */); |
| #endif |
| int total_count = 0; |
| RegisterMap map(thread, false /* update */, false /* process_frames */); |
| int decode_offset = 0; |
| CompiledMethod* nm = NULL; |
| bool skip_fillInStackTrace_check = false; |
| bool skip_throwableInit_check = false; |
| bool skip_hidden = !ShowHiddenFrames; |
| |
| for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) { |
| Method* method = NULL; |
| int bci = 0; |
| |
| // Compiled java method case. |
| if (decode_offset != 0) { |
| DebugInfoReadStream stream(nm, decode_offset); |
| decode_offset = stream.read_int(); |
| method = (Method*)nm->metadata_at(stream.read_int()); |
| bci = stream.read_bci(); |
| } else { |
| if (fr.is_first_frame()) break; |
| address pc = fr.pc(); |
| if (fr.is_interpreted_frame()) { |
| address bcp = fr.interpreter_frame_bcp(); |
| method = fr.interpreter_frame_method(); |
| bci = method->bci_from(bcp); |
| fr = fr.sender(&map); |
| } else { |
| CodeBlob* cb = fr.cb(); |
| // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL |
| // but non nmethod |
| fr = fr.sender(&map); |
| if (cb == NULL || !cb->is_compiled()) { |
| continue; |
| } |
| nm = cb->as_compiled_method(); |
| if (nm->method()->is_native()) { |
| method = nm->method(); |
| bci = 0; |
| } else { |
| PcDesc* pd = nm->pc_desc_at(pc); |
| decode_offset = pd->scope_decode_offset(); |
| // if decode_offset is not equal to 0, it will execute the |
| // "compiled java method case" at the beginning of the loop. |
| continue; |
| } |
| } |
| } |
| #ifdef ASSERT |
| assert(st.method() == method && st.bci() == bci, |
| "Wrong stack trace"); |
| st.next(); |
| #endif |
| |
| // the format of the stacktrace will be: |
| // - 1 or more fillInStackTrace frames for the exception class (skipped) |
| // - 0 or more <init> methods for the exception class (skipped) |
| // - rest of the stack |
| |
| if (!skip_fillInStackTrace_check) { |
| if (method->name() == vmSymbols::fillInStackTrace_name() && |
| throwable->is_a(method->method_holder())) { |
| continue; |
| } |
| else { |
| skip_fillInStackTrace_check = true; // gone past them all |
| } |
| } |
| if (!skip_throwableInit_check) { |
| assert(skip_fillInStackTrace_check, "logic error in backtrace filtering"); |
| |
| // skip <init> methods of the exception class and superclasses |
| // This is simlar to classic VM. |
| if (method->name() == vmSymbols::object_initializer_name() && |
| throwable->is_a(method->method_holder())) { |
| continue; |
| } else { |
| // there are none or we've seen them all - either way stop checking |
| skip_throwableInit_check = true; |
| } |
| } |
| if (method->is_hidden()) { |
| if (skip_hidden) { |
| if (total_count == 0) { |
| // The top frame will be hidden from the stack trace. |
| bt.set_has_hidden_top_frame(CHECK); |
| } |
| continue; |
| } |
| } |
| bt.push(method, bci, CHECK); |
| total_count++; |
| } |
| |
| log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count); |
| |
| // Put completed stack trace into throwable object |
| set_backtrace(throwable(), bt.backtrace()); |
| set_depth(throwable(), total_count); |
| } |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) { |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) { |
| return; |
| } |
| |
| // Disable stack traces for some preallocated out of memory errors |
| if (!Universe::should_fill_in_stack_trace(throwable)) { |
| return; |
| } |
| |
| PRESERVE_EXCEPTION_MARK; |
| |
| JavaThread* thread = JavaThread::active(); |
| fill_in_stack_trace(throwable, method, thread); |
| // ignore exceptions thrown during stack trace filling |
| CLEAR_PENDING_EXCEPTION; |
| } |
| |
| void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { |
| // Allocate stack trace - backtrace is created but not filled in |
| |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) return; |
| BacktraceBuilder bt(CHECK); // creates a backtrace |
| set_backtrace(throwable(), bt.backtrace()); |
| } |
| |
| |
| void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { |
| // Fill in stack trace into preallocated backtrace (no GC) |
| |
| // No-op if stack trace is disabled |
| if (!StackTraceInThrowable) return; |
| |
| assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check"); |
| |
| JavaThread* THREAD = JavaThread::current(); |
| |
| objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable())); |
| assert(backtrace.not_null(), "backtrace should have been preallocated"); |
| |
| ResourceMark rm(THREAD); |
| vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */); |
| |
| BacktraceBuilder bt(THREAD, backtrace); |
| |
| // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init |
| // methods as preallocated errors aren't created by "java" code. |
| |
| // fill in as much stack trace as possible |
| int chunk_count = 0; |
| for (;!st.at_end(); st.next()) { |
| bt.push(st.method(), st.bci(), CHECK); |
| chunk_count++; |
| |
| // Bail-out for deep stacks |
| if (chunk_count >= trace_chunk_size) break; |
| } |
| set_depth(throwable(), chunk_count); |
| log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count); |
| |
| // We support the Throwable immutability protocol defined for Java 7. |
| java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace()); |
| assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized"); |
| } |
| |
| void java_lang_Throwable::get_stack_trace_elements(Handle throwable, |
| objArrayHandle stack_trace_array_h, TRAPS) { |
| |
| if (throwable.is_null() || stack_trace_array_h.is_null()) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } |
| |
| assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent"); |
| |
| if (stack_trace_array_h->length() != depth(throwable())) { |
| THROW(vmSymbols::java_lang_IndexOutOfBoundsException()); |
| } |
| |
| objArrayHandle result(THREAD, objArrayOop(backtrace(throwable()))); |
| BacktraceIterator iter(result, THREAD); |
| |
| int index = 0; |
| while (iter.repeat()) { |
| BacktraceElement bte = iter.next(THREAD); |
| |
| Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++)); |
| |
| if (stack_trace_element.is_null()) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } |
| |
| InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror())); |
| methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version)); |
| |
| java_lang_StackTraceElement::fill_in(stack_trace_element, holder, |
| method, |
| bte._version, |
| bte._bci, |
| bte._name, CHECK); |
| } |
| } |
| |
| bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) { |
| Thread* THREAD = Thread::current(); |
| objArrayHandle result(THREAD, objArrayOop(backtrace(throwable))); |
| BacktraceIterator iter(result, THREAD); |
| // No backtrace available. |
| if (!iter.repeat()) return false; |
| |
| // If the exception happened in a frame that has been hidden, i.e., |
| // omitted from the back trace, we can not compute the message. |
| oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset); |
| if (hidden != NULL) { |
| return false; |
| } |
| |
| // Get first backtrace element. |
| BacktraceElement bte = iter.next(THREAD); |
| |
| InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror())); |
| assert(holder != NULL, "first element should be non-null"); |
| Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version); |
| |
| // Original version is no longer available. |
| if (m == NULL || !version_matches(m, bte._version)) { |
| return false; |
| } |
| |
| *method = m; |
| *bci = bte._bci; |
| return true; |
| } |
| |
| oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) { |
| // Allocate java.lang.StackTraceElement instance |
| InstanceKlass* k = SystemDictionary::StackTraceElement_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| if (k->should_be_initialized()) { |
| k->initialize(CHECK_NULL); |
| } |
| |
| Handle element = k->allocate_instance_handle(CHECK_NULL); |
| |
| int version = method->constants()->version(); |
| fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL); |
| return element(); |
| } |
| |
| void java_lang_StackTraceElement::fill_in(Handle element, |
| InstanceKlass* holder, const methodHandle& method, |
| int version, int bci, Symbol* name, TRAPS) { |
| assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check"); |
| |
| ResourceMark rm(THREAD); |
| HandleMark hm(THREAD); |
| |
| // Fill in class name |
| Handle java_class(THREAD, holder->java_mirror()); |
| oop classname = java_lang_Class::name(java_class, CHECK); |
| java_lang_StackTraceElement::set_declaringClass(element(), classname); |
| java_lang_StackTraceElement::set_declaringClassObject(element(), java_class()); |
| |
| oop loader = holder->class_loader(); |
| if (loader != NULL) { |
| oop loader_name = java_lang_ClassLoader::name(loader); |
| if (loader_name != NULL) |
| java_lang_StackTraceElement::set_classLoaderName(element(), loader_name); |
| } |
| |
| // Fill in method name |
| oop methodname = StringTable::intern(name, CHECK); |
| java_lang_StackTraceElement::set_methodName(element(), methodname); |
| |
| // Fill in module name and version |
| ModuleEntry* module = holder->module(); |
| if (module->is_named()) { |
| oop module_name = StringTable::intern(module->name(), CHECK); |
| java_lang_StackTraceElement::set_moduleName(element(), module_name); |
| oop module_version; |
| if (module->version() != NULL) { |
| module_version = StringTable::intern(module->version(), CHECK); |
| } else { |
| module_version = NULL; |
| } |
| java_lang_StackTraceElement::set_moduleVersion(element(), module_version); |
| } |
| |
| if (method() == NULL || !version_matches(method(), version)) { |
| // The method was redefined, accurate line number information isn't available |
| java_lang_StackTraceElement::set_fileName(element(), NULL); |
| java_lang_StackTraceElement::set_lineNumber(element(), -1); |
| } else { |
| Symbol* source; |
| oop source_file; |
| int line_number; |
| decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK); |
| |
| java_lang_StackTraceElement::set_fileName(element(), source_file); |
| java_lang_StackTraceElement::set_lineNumber(element(), line_number); |
| } |
| } |
| |
| void java_lang_StackTraceElement::decode_file_and_line(Handle java_class, |
| InstanceKlass* holder, |
| int version, |
| const methodHandle& method, |
| int bci, |
| Symbol*& source, |
| oop& source_file, |
| int& line_number, TRAPS) { |
| // Fill in source file name and line number. |
| source = Backtrace::get_source_file_name(holder, version); |
| source_file = java_lang_Class::source_file(java_class()); |
| if (source != NULL) { |
| // Class was not redefined. We can trust its cache if set, |
| // else we have to initialize it. |
| if (source_file == NULL) { |
| source_file = StringTable::intern(source, CHECK); |
| java_lang_Class::set_source_file(java_class(), source_file); |
| } |
| } else { |
| // Class was redefined. Dump the cache if it was set. |
| if (source_file != NULL) { |
| source_file = NULL; |
| java_lang_Class::set_source_file(java_class(), source_file); |
| } |
| } |
| line_number = Backtrace::get_line_number(method(), bci); |
| } |
| |
| #if INCLUDE_JVMCI |
| void java_lang_StackTraceElement::decode(const methodHandle& method, int bci, |
| Symbol*& filename, int& line_number, TRAPS) { |
| ResourceMark rm(THREAD); |
| HandleMark hm(THREAD); |
| |
| filename = NULL; |
| line_number = -1; |
| |
| oop source_file; |
| int version = method->constants()->version(); |
| InstanceKlass* holder = method->method_holder(); |
| Handle java_class(THREAD, holder->java_mirror()); |
| decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK); |
| } |
| #endif // INCLUDE_JVMCI |
| |
| // java_lang_StackFrameInfo |
| |
| int java_lang_StackFrameInfo::_memberName_offset; |
| int java_lang_StackFrameInfo::_bci_offset; |
| int java_lang_StackFrameInfo::_version_offset; |
| |
| #define STACKFRAMEINFO_FIELDS_DO(macro) \ |
| macro(_memberName_offset, k, "memberName", object_signature, false); \ |
| macro(_bci_offset, k, "bci", int_signature, false) |
| |
| void java_lang_StackFrameInfo::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::StackFrameInfo_klass(); |
| STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) { |
| STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) { |
| HandleMark hm(THREAD); |
| Handle mname(THREAD, stackFrame->obj_field(_memberName_offset)); |
| Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname()); |
| // we should expand MemberName::name when Throwable uses StackTrace |
| // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL); |
| return method; |
| } |
| |
| void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) { |
| // set Method* or mid/cpref |
| HandleMark hm(THREAD); |
| Handle mname(THREAD, stackFrame->obj_field(_memberName_offset)); |
| InstanceKlass* ik = method->method_holder(); |
| CallInfo info(method(), ik, CHECK); |
| MethodHandles::init_method_MemberName(mname, info, THREAD); |
| // set bci |
| java_lang_StackFrameInfo::set_bci(stackFrame(), bci); |
| // method may be redefined; store the version |
| int version = method->constants()->version(); |
| assert((jushort)version == version, "version should be short"); |
| java_lang_StackFrameInfo::set_version(stackFrame(), (short)version); |
| } |
| |
| void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) { |
| ResourceMark rm(THREAD); |
| HandleMark hm(THREAD); |
| Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset)); |
| Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname())); |
| InstanceKlass* holder = InstanceKlass::cast(clazz); |
| Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK); |
| |
| short version = stackFrame->short_field(_version_offset); |
| int bci = stackFrame->int_field(_bci_offset); |
| Symbol* name = method->name(); |
| java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), |
| version, bci, name, CHECK); |
| } |
| |
| void java_lang_StackFrameInfo::set_version(oop element, short value) { |
| element->short_field_put(_version_offset, value); |
| } |
| |
| void java_lang_StackFrameInfo::set_bci(oop element, int value) { |
| assert(value >= 0 && value < max_jushort, "must be a valid bci value"); |
| element->int_field_put(_bci_offset, value); |
| } |
| |
| int java_lang_LiveStackFrameInfo::_monitors_offset; |
| int java_lang_LiveStackFrameInfo::_locals_offset; |
| int java_lang_LiveStackFrameInfo::_operands_offset; |
| int java_lang_LiveStackFrameInfo::_mode_offset; |
| |
| #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \ |
| macro(_monitors_offset, k, "monitors", object_array_signature, false); \ |
| macro(_locals_offset, k, "locals", object_array_signature, false); \ |
| macro(_operands_offset, k, "operands", object_array_signature, false); \ |
| macro(_mode_offset, k, "mode", int_signature, false) |
| |
| void java_lang_LiveStackFrameInfo::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass(); |
| LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) { |
| LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) { |
| element->obj_field_put(_monitors_offset, value); |
| } |
| |
| void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) { |
| element->obj_field_put(_locals_offset, value); |
| } |
| |
| void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) { |
| element->obj_field_put(_operands_offset, value); |
| } |
| |
| void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) { |
| element->int_field_put(_mode_offset, value); |
| } |
| |
| |
| // java_lang_AccessibleObject |
| |
| int java_lang_reflect_AccessibleObject::_override_offset; |
| |
| #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \ |
| macro(_override_offset, k, "override", bool_signature, false) |
| |
| void java_lang_reflect_AccessibleObject::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass(); |
| ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) { |
| ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { |
| return (jboolean) reflect->bool_field(_override_offset); |
| } |
| |
| void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { |
| reflect->bool_field_put(_override_offset, (int) value); |
| } |
| |
| // java_lang_reflect_Method |
| |
| int java_lang_reflect_Method::_clazz_offset; |
| int java_lang_reflect_Method::_name_offset; |
| int java_lang_reflect_Method::_returnType_offset; |
| int java_lang_reflect_Method::_parameterTypes_offset; |
| int java_lang_reflect_Method::_exceptionTypes_offset; |
| int java_lang_reflect_Method::_slot_offset; |
| int java_lang_reflect_Method::_modifiers_offset; |
| int java_lang_reflect_Method::_signature_offset; |
| int java_lang_reflect_Method::_annotations_offset; |
| int java_lang_reflect_Method::_parameter_annotations_offset; |
| int java_lang_reflect_Method::_annotation_default_offset; |
| |
| #define METHOD_FIELDS_DO(macro) \ |
| macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \ |
| macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \ |
| macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \ |
| macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ |
| macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ |
| macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ |
| macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \ |
| macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \ |
| macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false); |
| |
| void java_lang_reflect_Method::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_Method_klass(); |
| METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) { |
| METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| Handle java_lang_reflect_Method::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| Klass* klass = SystemDictionary::reflect_Method_klass(); |
| // This class is eagerly initialized during VM initialization, since we keep a refence |
| // to one of the methods |
| assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized"); |
| return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD); |
| } |
| |
| oop java_lang_reflect_Method::clazz(oop reflect) { |
| return reflect->obj_field(_clazz_offset); |
| } |
| |
| void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { |
| reflect->obj_field_put(_clazz_offset, value); |
| } |
| |
| int java_lang_reflect_Method::slot(oop reflect) { |
| return reflect->int_field(_slot_offset); |
| } |
| |
| void java_lang_reflect_Method::set_slot(oop reflect, int value) { |
| reflect->int_field_put(_slot_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_name(oop method, oop value) { |
| method->obj_field_put(_name_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::return_type(oop method) { |
| return method->obj_field(_returnType_offset); |
| } |
| |
| void java_lang_reflect_Method::set_return_type(oop method, oop value) { |
| method->obj_field_put(_returnType_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::parameter_types(oop method) { |
| return method->obj_field(_parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { |
| method->obj_field_put(_parameterTypes_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_exception_types(oop method, oop value) { |
| method->obj_field_put(_exceptionTypes_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_modifiers(oop method, int value) { |
| method->int_field_put(_modifiers_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_signature(oop method, oop value) { |
| method->obj_field_put(_signature_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_annotations(oop method, oop value) { |
| method->obj_field_put(_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { |
| method->obj_field_put(_parameter_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { |
| method->obj_field_put(_annotation_default_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::_clazz_offset; |
| int java_lang_reflect_Constructor::_parameterTypes_offset; |
| int java_lang_reflect_Constructor::_exceptionTypes_offset; |
| int java_lang_reflect_Constructor::_slot_offset; |
| int java_lang_reflect_Constructor::_modifiers_offset; |
| int java_lang_reflect_Constructor::_signature_offset; |
| int java_lang_reflect_Constructor::_annotations_offset; |
| int java_lang_reflect_Constructor::_parameter_annotations_offset; |
| |
| #define CONSTRUCTOR_FIELDS_DO(macro) \ |
| macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ |
| macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \ |
| macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \ |
| macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ |
| macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ |
| macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ |
| macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \ |
| macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); |
| |
| void java_lang_reflect_Constructor::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_Constructor_klass(); |
| CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) { |
| CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| Handle java_lang_reflect_Constructor::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| Symbol* name = vmSymbols::java_lang_reflect_Constructor(); |
| Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| // Ensure it is initialized |
| ik->initialize(CHECK_NH); |
| return ik->allocate_instance_handle(THREAD); |
| } |
| |
| oop java_lang_reflect_Constructor::clazz(oop reflect) { |
| return reflect->obj_field(_clazz_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { |
| reflect->obj_field_put(_clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Constructor::parameter_types(oop constructor) { |
| return constructor->obj_field(_parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { |
| constructor->obj_field_put(_parameterTypes_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { |
| constructor->obj_field_put(_exceptionTypes_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::slot(oop reflect) { |
| return reflect->int_field(_slot_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { |
| reflect->int_field_put(_slot_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { |
| constructor->int_field_put(_modifiers_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { |
| constructor->obj_field_put(_signature_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { |
| constructor->obj_field_put(_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { |
| method->obj_field_put(_parameter_annotations_offset, value); |
| } |
| |
| int java_lang_reflect_Field::_clazz_offset; |
| int java_lang_reflect_Field::_name_offset; |
| int java_lang_reflect_Field::_type_offset; |
| int java_lang_reflect_Field::_slot_offset; |
| int java_lang_reflect_Field::_modifiers_offset; |
| int java_lang_reflect_Field::_trusted_final_offset; |
| int java_lang_reflect_Field::_signature_offset; |
| int java_lang_reflect_Field::_annotations_offset; |
| |
| #define FIELD_FIELDS_DO(macro) \ |
| macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \ |
| macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ |
| macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ |
| macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \ |
| macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ |
| macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); |
| |
| void java_lang_reflect_Field::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_Field_klass(); |
| FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) { |
| FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| Handle java_lang_reflect_Field::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| Symbol* name = vmSymbols::java_lang_reflect_Field(); |
| Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| // Ensure it is initialized |
| ik->initialize(CHECK_NH); |
| return ik->allocate_instance_handle(THREAD); |
| } |
| |
| oop java_lang_reflect_Field::clazz(oop reflect) { |
| return reflect->obj_field(_clazz_offset); |
| } |
| |
| void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { |
| reflect->obj_field_put(_clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::name(oop field) { |
| return field->obj_field(_name_offset); |
| } |
| |
| void java_lang_reflect_Field::set_name(oop field, oop value) { |
| field->obj_field_put(_name_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::type(oop field) { |
| return field->obj_field(_type_offset); |
| } |
| |
| void java_lang_reflect_Field::set_type(oop field, oop value) { |
| field->obj_field_put(_type_offset, value); |
| } |
| |
| int java_lang_reflect_Field::slot(oop reflect) { |
| return reflect->int_field(_slot_offset); |
| } |
| |
| void java_lang_reflect_Field::set_slot(oop reflect, int value) { |
| reflect->int_field_put(_slot_offset, value); |
| } |
| |
| int java_lang_reflect_Field::modifiers(oop field) { |
| return field->int_field(_modifiers_offset); |
| } |
| |
| void java_lang_reflect_Field::set_modifiers(oop field, int value) { |
| field->int_field_put(_modifiers_offset, value); |
| } |
| |
| void java_lang_reflect_Field::set_trusted_final(oop field) { |
| field->bool_field_put(_trusted_final_offset, true); |
| } |
| |
| void java_lang_reflect_Field::set_signature(oop field, oop value) { |
| field->obj_field_put(_signature_offset, value); |
| } |
| |
| void java_lang_reflect_Field::set_annotations(oop field, oop value) { |
| field->obj_field_put(_annotations_offset, value); |
| } |
| |
| oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) { |
| // Allocate java.lang.reflect.RecordComponent instance |
| HandleMark hm(THREAD); |
| InstanceKlass* ik = SystemDictionary::RecordComponent_klass(); |
| assert(ik != NULL, "must be loaded"); |
| ik->initialize(CHECK_NULL); |
| |
| Handle element = ik->allocate_instance_handle(CHECK_NULL); |
| |
| Handle decl_class(THREAD, holder->java_mirror()); |
| java_lang_reflect_RecordComponent::set_clazz(element(), decl_class()); |
| |
| Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8 |
| oop component_name = StringTable::intern(name, CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_name(element(), component_name); |
| |
| Symbol* type = holder->constants()->symbol_at(component->descriptor_index()); |
| Handle component_type_h = |
| SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_type(element(), component_type_h()); |
| |
| Method* accessor_method = NULL; |
| { |
| // Prepend "()" to type to create the full method signature. |
| ResourceMark rm(THREAD); |
| int sig_len = type->utf8_length() + 3; // "()" and null char |
| char* sig = NEW_RESOURCE_ARRAY(char, sig_len); |
| jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string()); |
| TempNewSymbol full_sig = SymbolTable::new_symbol(sig); |
| accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find); |
| } |
| |
| if (accessor_method != NULL) { |
| methodHandle method(THREAD, accessor_method); |
| oop m = Reflection::new_method(method, false, CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_accessor(element(), m); |
| } else { |
| java_lang_reflect_RecordComponent::set_accessor(element(), NULL); |
| } |
| |
| int sig_index = component->generic_signature_index(); |
| if (sig_index > 0) { |
| Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8 |
| oop component_sig = StringTable::intern(sig, CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_signature(element(), component_sig); |
| } else { |
| java_lang_reflect_RecordComponent::set_signature(element(), NULL); |
| } |
| |
| typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop); |
| |
| typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL); |
| java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop); |
| |
| return element(); |
| } |
| |
| int reflect_ConstantPool::_oop_offset; |
| |
| #define CONSTANTPOOL_FIELDS_DO(macro) \ |
| macro(_oop_offset, k, "constantPoolOop", object_signature, false) |
| |
| void reflect_ConstantPool::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass(); |
| // The field is called ConstantPool* in the sun.reflect.ConstantPool class. |
| CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) { |
| CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| int java_lang_reflect_Parameter::_name_offset; |
| int java_lang_reflect_Parameter::_modifiers_offset; |
| int java_lang_reflect_Parameter::_index_offset; |
| int java_lang_reflect_Parameter::_executable_offset; |
| |
| #define PARAMETER_FIELDS_DO(macro) \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ |
| macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \ |
| macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false) |
| |
| void java_lang_reflect_Parameter::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_Parameter_klass(); |
| PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) { |
| PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| Handle java_lang_reflect_Parameter::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| Symbol* name = vmSymbols::java_lang_reflect_Parameter(); |
| Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| // Ensure it is initialized |
| ik->initialize(CHECK_NH); |
| return ik->allocate_instance_handle(THREAD); |
| } |
| |
| oop java_lang_reflect_Parameter::name(oop param) { |
| return param->obj_field(_name_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_name(oop param, oop value) { |
| param->obj_field_put(_name_offset, value); |
| } |
| |
| int java_lang_reflect_Parameter::modifiers(oop param) { |
| return param->int_field(_modifiers_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_modifiers(oop param, int value) { |
| param->int_field_put(_modifiers_offset, value); |
| } |
| |
| int java_lang_reflect_Parameter::index(oop param) { |
| return param->int_field(_index_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_index(oop param, int value) { |
| param->int_field_put(_index_offset, value); |
| } |
| |
| oop java_lang_reflect_Parameter::executable(oop param) { |
| return param->obj_field(_executable_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_executable(oop param, oop value) { |
| param->obj_field_put(_executable_offset, value); |
| } |
| |
| // java_lang_Module |
| |
| int java_lang_Module::_loader_offset; |
| int java_lang_Module::_name_offset; |
| int java_lang_Module::_module_entry_offset; |
| |
| Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(), |
| vmSymbols::java_lang_module_init_signature(), |
| loader, module_name, CHECK_NH); |
| } |
| |
| #define MODULE_FIELDS_DO(macro) \ |
| macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false) |
| |
| void java_lang_Module::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::Module_klass(); |
| MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Module::serialize_offsets(SerializeClosure* f) { |
| MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_lang_Module::loader(oop module) { |
| return module->obj_field(_loader_offset); |
| } |
| |
| void java_lang_Module::set_loader(oop module, oop value) { |
| module->obj_field_put(_loader_offset, value); |
| } |
| |
| oop java_lang_Module::name(oop module) { |
| return module->obj_field(_name_offset); |
| } |
| |
| void java_lang_Module::set_name(oop module, oop value) { |
| module->obj_field_put(_name_offset, value); |
| } |
| |
| ModuleEntry* java_lang_Module::module_entry_raw(oop module) { |
| assert(_module_entry_offset != 0, "Uninitialized module_entry_offset"); |
| assert(module != NULL, "module can't be null"); |
| assert(oopDesc::is_oop(module), "module must be oop"); |
| |
| ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset); |
| return module_entry; |
| } |
| |
| ModuleEntry* java_lang_Module::module_entry(oop module) { |
| ModuleEntry* module_entry = module_entry_raw(module); |
| if (module_entry == NULL) { |
| // If the inject field containing the ModuleEntry* is null then return the |
| // class loader's unnamed module. |
| oop loader = java_lang_Module::loader(module); |
| Handle h_loader = Handle(Thread::current(), loader); |
| ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader); |
| return loader_cld->unnamed_module(); |
| } |
| return module_entry; |
| } |
| |
| void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) { |
| assert(_module_entry_offset != 0, "Uninitialized module_entry_offset"); |
| assert(module != NULL, "module can't be null"); |
| assert(oopDesc::is_oop(module), "module must be oop"); |
| module->address_field_put(_module_entry_offset, (address)module_entry); |
| } |
| |
| Handle reflect_ConstantPool::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass(); |
| // Ensure it is initialized |
| k->initialize(CHECK_NH); |
| return k->allocate_instance_handle(THREAD); |
| } |
| |
| |
| void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) { |
| oop mirror = value->pool_holder()->java_mirror(); |
| // Save the mirror to get back the constant pool. |
| reflect->obj_field_put(_oop_offset, mirror); |
| } |
| |
| ConstantPool* reflect_ConstantPool::get_cp(oop reflect) { |
| |
| oop mirror = reflect->obj_field(_oop_offset); |
| Klass* k = java_lang_Class::as_Klass(mirror); |
| assert(k->is_instance_klass(), "Must be"); |
| |
| // Get the constant pool back from the klass. Since class redefinition |
| // merges the new constant pool into the old, this is essentially the |
| // same constant pool as the original. If constant pool merging is |
| // no longer done in the future, this will have to change to save |
| // the original. |
| return InstanceKlass::cast(k)->constants(); |
| } |
| |
| int reflect_UnsafeStaticFieldAccessorImpl::_base_offset; |
| |
| #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \ |
| macro(_base_offset, k, "base", object_signature, false) |
| |
| void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(); |
| UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) { |
| UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| // Support for java_lang_ref_Reference |
| |
| bool java_lang_ref_Reference::_offsets_initialized; |
| |
| int java_lang_ref_Reference::_referent_offset; |
| int java_lang_ref_Reference::_queue_offset; |
| int java_lang_ref_Reference::_next_offset; |
| int java_lang_ref_Reference::_discovered_offset; |
| |
| #define REFERENCE_FIELDS_DO(macro) \ |
| macro(_referent_offset, k, "referent", object_signature, false); \ |
| macro(_queue_offset, k, "queue", referencequeue_signature, false); \ |
| macro(_next_offset, k, "next", reference_signature, false); \ |
| macro(_discovered_offset, k, "discovered", reference_signature, false); |
| |
| void java_lang_ref_Reference::compute_offsets() { |
| if (_offsets_initialized) { |
| return; |
| } |
| _offsets_initialized = true; |
| InstanceKlass* k = SystemDictionary::Reference_klass(); |
| REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) { |
| f->do_bool(&_offsets_initialized); |
| REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) { |
| assert(obj != NULL, "sanity"); |
| if (offset != _referent_offset) { |
| return false; |
| } |
| |
| Klass* k = obj->klass(); |
| if (!k->is_instance_klass()) { |
| return false; |
| } |
| |
| InstanceKlass* ik = InstanceKlass::cast(obj->klass()); |
| bool is_reference = ik->reference_type() != REF_NONE; |
| assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity"); |
| return is_reference; |
| } |
| |
| int java_lang_boxing_object::_value_offset; |
| int java_lang_boxing_object::_long_value_offset; |
| |
| #define BOXING_FIELDS_DO(macro) \ |
| macro(_value_offset, integerKlass, "value", int_signature, false); \ |
| macro(_long_value_offset, longKlass, "value", long_signature, false); |
| |
| void java_lang_boxing_object::compute_offsets() { |
| InstanceKlass* integerKlass = SystemDictionary::Integer_klass(); |
| InstanceKlass* longKlass = SystemDictionary::Long_klass(); |
| BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) { |
| BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { |
| Klass* k = SystemDictionary::box_klass(type); |
| if (k == NULL) return NULL; |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| if (!ik->is_initialized()) ik->initialize(CHECK_NULL); |
| return ik->allocate_instance(THREAD); |
| } |
| |
| |
| oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { |
| oop box = initialize_and_allocate(type, CHECK_NULL); |
| if (box == NULL) return NULL; |
| switch (type) { |
| case T_BOOLEAN: |
| box->bool_field_put(_value_offset, value->z); |
| break; |
| case T_CHAR: |
| box->char_field_put(_value_offset, value->c); |
| break; |
| case T_FLOAT: |
| box->float_field_put(_value_offset, value->f); |
| break; |
| case T_DOUBLE: |
| box->double_field_put(_long_value_offset, value->d); |
| break; |
| case T_BYTE: |
| box->byte_field_put(_value_offset, value->b); |
| break; |
| case T_SHORT: |
| box->short_field_put(_value_offset, value->s); |
| break; |
| case T_INT: |
| box->int_field_put(_value_offset, value->i); |
| break; |
| case T_LONG: |
| box->long_field_put(_long_value_offset, value->j); |
| break; |
| default: |
| return NULL; |
| } |
| return box; |
| } |
| |
| |
| BasicType java_lang_boxing_object::basic_type(oop box) { |
| if (box == NULL) return T_ILLEGAL; |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| if (type == T_OBJECT) // 'unknown' value returned by SD::bkt |
| return T_ILLEGAL; |
| return type; |
| } |
| |
| |
| BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| switch (type) { |
| case T_BOOLEAN: |
| value->z = box->bool_field(_value_offset); |
| break; |
| case T_CHAR: |
| value->c = box->char_field(_value_offset); |
| break; |
| case T_FLOAT: |
| value->f = box->float_field(_value_offset); |
| break; |
| case T_DOUBLE: |
| value->d = box->double_field(_long_value_offset); |
| break; |
| case T_BYTE: |
| value->b = box->byte_field(_value_offset); |
| break; |
| case T_SHORT: |
| value->s = box->short_field(_value_offset); |
| break; |
| case T_INT: |
| value->i = box->int_field(_value_offset); |
| break; |
| case T_LONG: |
| value->j = box->long_field(_long_value_offset); |
| break; |
| default: |
| return T_ILLEGAL; |
| } // end switch |
| return type; |
| } |
| |
| |
| BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { |
| BasicType type = SystemDictionary::box_klass_type(box->klass()); |
| switch (type) { |
| case T_BOOLEAN: |
| box->bool_field_put(_value_offset, value->z); |
| break; |
| case T_CHAR: |
| box->char_field_put(_value_offset, value->c); |
| break; |
| case T_FLOAT: |
| box->float_field_put(_value_offset, value->f); |
| break; |
| case T_DOUBLE: |
| box->double_field_put(_long_value_offset, value->d); |
| break; |
| case T_BYTE: |
| box->byte_field_put(_value_offset, value->b); |
| break; |
| case T_SHORT: |
| box->short_field_put(_value_offset, value->s); |
| break; |
| case T_INT: |
| box->int_field_put(_value_offset, value->i); |
| break; |
| case T_LONG: |
| box->long_field_put(_long_value_offset, value->j); |
| break; |
| default: |
| return T_ILLEGAL; |
| } // end switch |
| return type; |
| } |
| |
| |
| void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) { |
| switch (type) { |
| case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break; |
| case T_CHAR: st->print("%d", value->c); break; |
| case T_BYTE: st->print("%d", value->b); break; |
| case T_SHORT: st->print("%d", value->s); break; |
| case T_INT: st->print("%d", value->i); break; |
| case T_LONG: st->print(JLONG_FORMAT, value->j); break; |
| case T_FLOAT: st->print("%f", value->f); break; |
| case T_DOUBLE: st->print("%lf", value->d); break; |
| default: st->print("type %d?", type); break; |
| } |
| } |
| |
| |
| // Support for java_lang_ref_SoftReference |
| // |
| |
| int java_lang_ref_SoftReference::_timestamp_offset; |
| int java_lang_ref_SoftReference::_static_clock_offset; |
| |
| #define SOFTREFERENCE_FIELDS_DO(macro) \ |
| macro(_timestamp_offset, k, "timestamp", long_signature, false); \ |
| macro(_static_clock_offset, k, "clock", long_signature, true) |
| |
| void java_lang_ref_SoftReference::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::SoftReference_klass(); |
| SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) { |
| SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| jlong java_lang_ref_SoftReference::timestamp(oop ref) { |
| return ref->long_field(_timestamp_offset); |
| } |
| |
| jlong java_lang_ref_SoftReference::clock() { |
| InstanceKlass* ik = SystemDictionary::SoftReference_klass(); |
| oop base = ik->static_field_base_raw(); |
| return base->long_field(_static_clock_offset); |
| } |
| |
| void java_lang_ref_SoftReference::set_clock(jlong value) { |
| InstanceKlass* ik = SystemDictionary::SoftReference_klass(); |
| oop base = ik->static_field_base_raw(); |
| base->long_field_put(_static_clock_offset, value); |
| } |
| |
| // Support for java_lang_invoke_DirectMethodHandle |
| |
| int java_lang_invoke_DirectMethodHandle::_member_offset; |
| |
| oop java_lang_invoke_DirectMethodHandle::member(oop dmh) { |
| oop member_name = NULL; |
| assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh), |
| "a DirectMethodHandle oop is expected"); |
| return dmh->obj_field(_member_offset); |
| } |
| |
| #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \ |
| macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false) |
| |
| void java_lang_invoke_DirectMethodHandle::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass(); |
| DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) { |
| DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| // Support for java_lang_invoke_MethodHandle |
| |
| int java_lang_invoke_MethodHandle::_type_offset; |
| int java_lang_invoke_MethodHandle::_form_offset; |
| |
| int java_lang_invoke_MemberName::_clazz_offset; |
| int java_lang_invoke_MemberName::_name_offset; |
| int java_lang_invoke_MemberName::_type_offset; |
| int java_lang_invoke_MemberName::_flags_offset; |
| int java_lang_invoke_MemberName::_method_offset; |
| int java_lang_invoke_MemberName::_vmindex_offset; |
| |
| int java_lang_invoke_ResolvedMethodName::_vmtarget_offset; |
| int java_lang_invoke_ResolvedMethodName::_vmholder_offset; |
| |
| int java_lang_invoke_LambdaForm::_vmentry_offset; |
| |
| #define METHODHANDLE_FIELDS_DO(macro) \ |
| macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \ |
| macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false) |
| |
| void java_lang_invoke_MethodHandle::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::MethodHandle_klass(); |
| METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) { |
| METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| #define MEMBERNAME_FIELDS_DO(macro) \ |
| macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ |
| macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ |
| macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \ |
| macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \ |
| macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false) |
| |
| void java_lang_invoke_MemberName::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::MemberName_klass(); |
| MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) { |
| MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_invoke_ResolvedMethodName::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass(); |
| assert(k != NULL, "jdk mismatch"); |
| RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) { |
| RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| #define LAMBDAFORM_FIELDS_DO(macro) \ |
| macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false) |
| |
| void java_lang_invoke_LambdaForm::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::LambdaForm_klass(); |
| assert (k != NULL, "jdk mismatch"); |
| LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) { |
| LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| bool java_lang_invoke_LambdaForm::is_instance(oop obj) { |
| return obj != NULL && is_subclass(obj->klass()); |
| } |
| |
| int jdk_internal_invoke_NativeEntryPoint::_addr_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_shadow_space_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_argMoves_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_returnMoves_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_need_transition_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_method_type_offset; |
| int jdk_internal_invoke_NativeEntryPoint::_name_offset; |
| |
| #define NEP_FIELDS_DO(macro) \ |
| macro(_addr_offset, k, "addr", long_signature, false); \ |
| macro(_shadow_space_offset, k, "shadowSpace", int_signature, false); \ |
| macro(_argMoves_offset, k, "argMoves", long_array_signature, false); \ |
| macro(_returnMoves_offset, k, "returnMoves", long_array_signature, false); \ |
| macro(_need_transition_offset, k, "needTransition", bool_signature, false); \ |
| macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \ |
| macro(_name_offset, k, "name", string_signature, false); |
| |
| bool jdk_internal_invoke_NativeEntryPoint::is_instance(oop obj) { |
| return obj != NULL && is_subclass(obj->klass()); |
| } |
| |
| void jdk_internal_invoke_NativeEntryPoint::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::NativeEntryPoint_klass(); |
| NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void jdk_internal_invoke_NativeEntryPoint::serialize_offsets(SerializeClosure* f) { |
| NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| address jdk_internal_invoke_NativeEntryPoint::addr(oop entry) { |
| return (address)entry->long_field(_addr_offset); |
| } |
| |
| jint jdk_internal_invoke_NativeEntryPoint::shadow_space(oop entry) { |
| return entry->int_field(_shadow_space_offset); |
| } |
| |
| oop jdk_internal_invoke_NativeEntryPoint::argMoves(oop entry) { |
| return entry->obj_field(_argMoves_offset); |
| } |
| |
| oop jdk_internal_invoke_NativeEntryPoint::returnMoves(oop entry) { |
| return entry->obj_field(_returnMoves_offset); |
| } |
| |
| jboolean jdk_internal_invoke_NativeEntryPoint::need_transition(oop entry) { |
| return entry->bool_field(_need_transition_offset); |
| } |
| |
| oop jdk_internal_invoke_NativeEntryPoint::method_type(oop entry) { |
| return entry->obj_field(_method_type_offset); |
| } |
| |
| oop jdk_internal_invoke_NativeEntryPoint::name(oop entry) { |
| return entry->obj_field(_name_offset); |
| } |
| |
| oop java_lang_invoke_MethodHandle::type(oop mh) { |
| return mh->obj_field(_type_offset); |
| } |
| |
| void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) { |
| mh->obj_field_put(_type_offset, mtype); |
| } |
| |
| oop java_lang_invoke_MethodHandle::form(oop mh) { |
| assert(_form_offset != 0, ""); |
| return mh->obj_field(_form_offset); |
| } |
| |
| void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) { |
| assert(_form_offset != 0, ""); |
| mh->obj_field_put(_form_offset, lform); |
| } |
| |
| /// MemberName accessors |
| |
| oop java_lang_invoke_MemberName::clazz(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return mname->obj_field(_clazz_offset); |
| } |
| |
| void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) { |
| assert(is_instance(mname), "wrong type"); |
| mname->obj_field_put(_clazz_offset, clazz); |
| } |
| |
| oop java_lang_invoke_MemberName::name(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return mname->obj_field(_name_offset); |
| } |
| |
| void java_lang_invoke_MemberName::set_name(oop mname, oop name) { |
| assert(is_instance(mname), "wrong type"); |
| mname->obj_field_put(_name_offset, name); |
| } |
| |
| oop java_lang_invoke_MemberName::type(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return mname->obj_field(_type_offset); |
| } |
| |
| void java_lang_invoke_MemberName::set_type(oop mname, oop type) { |
| assert(is_instance(mname), "wrong type"); |
| mname->obj_field_put(_type_offset, type); |
| } |
| |
| int java_lang_invoke_MemberName::flags(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return mname->int_field(_flags_offset); |
| } |
| |
| void java_lang_invoke_MemberName::set_flags(oop mname, int flags) { |
| assert(is_instance(mname), "wrong type"); |
| mname->int_field_put(_flags_offset, flags); |
| } |
| |
| |
| // Return vmtarget from ResolvedMethodName method field through indirection |
| Method* java_lang_invoke_MemberName::vmtarget(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| oop method = mname->obj_field(_method_offset); |
| return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method); |
| } |
| |
| bool java_lang_invoke_MemberName::is_method(oop mname) { |
| assert(is_instance(mname), "must be MemberName"); |
| return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0; |
| } |
| |
| void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) { |
| assert(is_instance(mname), "wrong type"); |
| mname->obj_field_put(_method_offset, resolved_method); |
| } |
| |
| intptr_t java_lang_invoke_MemberName::vmindex(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return (intptr_t) mname->address_field(_vmindex_offset); |
| } |
| |
| void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) { |
| assert(is_instance(mname), "wrong type"); |
| mname->address_field_put(_vmindex_offset, (address) index); |
| } |
| |
| |
| Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) { |
| assert(is_instance(resolved_method), "wrong type"); |
| Method* m = (Method*)resolved_method->address_field(_vmtarget_offset); |
| assert(m->is_method(), "must be"); |
| return m; |
| } |
| |
| // Used by redefinition to change Method* to new Method* with same hash (name, signature) |
| void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) { |
| assert(is_instance(resolved_method), "wrong type"); |
| resolved_method->address_field_put(_vmtarget_offset, (address)m); |
| } |
| |
| void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) { |
| assert(is_instance(resolved_method), "wrong type"); |
| resolved_method->obj_field_put(_vmholder_offset, holder); |
| } |
| |
| oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) { |
| const Method* method = m(); |
| |
| // lookup ResolvedMethod oop in the table, or create a new one and intern it |
| oop resolved_method = ResolvedMethodTable::find_method(method); |
| if (resolved_method != NULL) { |
| return resolved_method; |
| } |
| |
| InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass(); |
| if (!k->is_initialized()) { |
| k->initialize(CHECK_NULL); |
| } |
| |
| oop new_resolved_method = k->allocate_instance(CHECK_NULL); |
| |
| NoSafepointVerifier nsv; |
| |
| if (method->is_old()) { |
| method = (method->is_deleted()) ? Universe::throw_no_such_method_error() : |
| method->get_new_method(); |
| } |
| |
| InstanceKlass* holder = method->method_holder(); |
| |
| set_vmtarget(new_resolved_method, const_cast<Method*>(method)); |
| // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have |
| // distinct loaders) to ensure the metadata is kept alive. |
| // This mirror may be different than the one in clazz field. |
| set_vmholder(new_resolved_method, holder->java_mirror()); |
| |
| // Set flag in class to indicate this InstanceKlass has entries in the table |
| // to avoid walking table during redefinition if none of the redefined classes |
| // have any membernames in the table. |
| holder->set_has_resolved_methods(); |
| |
| return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method)); |
| } |
| |
| oop java_lang_invoke_LambdaForm::vmentry(oop lform) { |
| assert(is_instance(lform), "wrong type"); |
| return lform->obj_field(_vmentry_offset); |
| } |
| |
| |
| // Support for java_lang_invoke_MethodType |
| |
| int java_lang_invoke_MethodType::_rtype_offset; |
| int java_lang_invoke_MethodType::_ptypes_offset; |
| |
| #define METHODTYPE_FIELDS_DO(macro) \ |
| macro(_rtype_offset, k, "rtype", class_signature, false); \ |
| macro(_ptypes_offset, k, "ptypes", class_array_signature, false) |
| |
| void java_lang_invoke_MethodType::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::MethodType_klass(); |
| METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) { |
| METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) { |
| st->print("("); |
| objArrayOop pts = ptypes(mt); |
| for (int i = 0, limit = pts->length(); i < limit; i++) { |
| java_lang_Class::print_signature(pts->obj_at(i), st); |
| } |
| st->print(")"); |
| java_lang_Class::print_signature(rtype(mt), st); |
| } |
| |
| Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) { |
| ResourceMark rm; |
| stringStream buffer(128); |
| print_signature(mt, &buffer); |
| const char* sigstr = buffer.base(); |
| int siglen = (int) buffer.size(); |
| Symbol *name; |
| if (!intern_if_not_found) { |
| name = SymbolTable::probe(sigstr, siglen); |
| } else { |
| name = SymbolTable::new_symbol(sigstr, siglen); |
| } |
| return name; |
| } |
| |
| bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) { |
| if (mt1 == mt2) |
| return true; |
| if (rtype(mt1) != rtype(mt2)) |
| return false; |
| if (ptype_count(mt1) != ptype_count(mt2)) |
| return false; |
| for (int i = ptype_count(mt1) - 1; i >= 0; i--) { |
| if (ptype(mt1, i) != ptype(mt2, i)) |
| return false; |
| } |
| return true; |
| } |
| |
| oop java_lang_invoke_MethodType::rtype(oop mt) { |
| assert(is_instance(mt), "must be a MethodType"); |
| return mt->obj_field(_rtype_offset); |
| } |
| |
| objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) { |
| assert(is_instance(mt), "must be a MethodType"); |
| return (objArrayOop) mt->obj_field(_ptypes_offset); |
| } |
| |
| oop java_lang_invoke_MethodType::ptype(oop mt, int idx) { |
| return ptypes(mt)->obj_at(idx); |
| } |
| |
| int java_lang_invoke_MethodType::ptype_count(oop mt) { |
| return ptypes(mt)->length(); |
| } |
| |
| int java_lang_invoke_MethodType::ptype_slot_count(oop mt) { |
| objArrayOop pts = ptypes(mt); |
| int count = pts->length(); |
| int slots = 0; |
| for (int i = 0; i < count; i++) { |
| BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i)); |
| slots += type2size[bt]; |
| } |
| return slots; |
| } |
| |
| int java_lang_invoke_MethodType::rtype_slot_count(oop mt) { |
| BasicType bt = java_lang_Class::as_BasicType(rtype(mt)); |
| return type2size[bt]; |
| } |
| |
| |
| // Support for java_lang_invoke_CallSite |
| |
| int java_lang_invoke_CallSite::_target_offset; |
| int java_lang_invoke_CallSite::_context_offset; |
| |
| #define CALLSITE_FIELDS_DO(macro) \ |
| macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \ |
| macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false) |
| |
| void java_lang_invoke_CallSite::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::CallSite_klass(); |
| CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) { |
| CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) { |
| assert(java_lang_invoke_CallSite::is_instance(call_site), ""); |
| |
| oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset); |
| return dep_oop; |
| } |
| |
| // Support for java_lang_invoke_ConstantCallSite |
| |
| int java_lang_invoke_ConstantCallSite::_is_frozen_offset; |
| |
| #define CONSTANTCALLSITE_FIELDS_DO(macro) \ |
| macro(_is_frozen_offset, k, "isFrozen", bool_signature, false) |
| |
| void java_lang_invoke_ConstantCallSite::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::ConstantCallSite_klass(); |
| CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) { |
| CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext |
| |
| int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset; |
| int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset; |
| |
| void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::Context_klass(); |
| CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) { |
| CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) { |
| assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), ""); |
| nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset); |
| volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset); |
| DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr); |
| return dep_ctx; |
| } |
| |
| // Support for java_security_AccessControlContext |
| |
| int java_security_AccessControlContext::_context_offset; |
| int java_security_AccessControlContext::_privilegedContext_offset; |
| int java_security_AccessControlContext::_isPrivileged_offset; |
| int java_security_AccessControlContext::_isAuthorized_offset; |
| |
| #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \ |
| macro(_context_offset, k, "context", protectiondomain_signature, false); \ |
| macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \ |
| macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \ |
| macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false) |
| |
| void java_security_AccessControlContext::compute_offsets() { |
| assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); |
| InstanceKlass* k = SystemDictionary::AccessControlContext_klass(); |
| ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) { |
| ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { |
| assert(_isPrivileged_offset != 0, "offsets should have been initialized"); |
| assert(_isAuthorized_offset != 0, "offsets should have been initialized"); |
| // Ensure klass is initialized |
| SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL); |
| // Allocate result |
| oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL); |
| // Fill in values |
| result->obj_field_put(_context_offset, context()); |
| result->obj_field_put(_privilegedContext_offset, privileged_context()); |
| result->bool_field_put(_isPrivileged_offset, isPrivileged); |
| result->bool_field_put(_isAuthorized_offset, true); |
| return result; |
| } |
| |
| |
| // Support for java_lang_ClassLoader |
| |
| int java_lang_ClassLoader::_loader_data_offset; |
| int java_lang_ClassLoader::_parallelCapable_offset; |
| int java_lang_ClassLoader::_name_offset; |
| int java_lang_ClassLoader::_nameAndId_offset; |
| int java_lang_ClassLoader::_unnamedModule_offset; |
| int java_lang_ClassLoader::_parent_offset; |
| |
| ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) { |
| assert(loader != NULL, "loader must not be NULL"); |
| assert(oopDesc::is_oop(loader), "loader must be oop"); |
| return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset); |
| } |
| |
| ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) { |
| assert(loader != NULL, "loader must not be NULL"); |
| assert(oopDesc::is_oop(loader), "loader must be oop"); |
| return RawAccess<>::load_at(loader, _loader_data_offset); |
| } |
| |
| void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) { |
| assert(loader != NULL, "loader must not be NULL"); |
| assert(oopDesc::is_oop(loader), "loader must be oop"); |
| HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data); |
| } |
| |
| #define CLASSLOADER_FIELDS_DO(macro) \ |
| macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \ |
| macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \ |
| macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \ |
| macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \ |
| macro(_parent_offset, k1, "parent", classloader_signature, false) |
| |
| void java_lang_ClassLoader::compute_offsets() { |
| InstanceKlass* k1 = SystemDictionary::ClassLoader_klass(); |
| CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| |
| CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) { |
| CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| oop java_lang_ClassLoader::parent(oop loader) { |
| assert(is_instance(loader), "loader must be oop"); |
| return loader->obj_field(_parent_offset); |
| } |
| |
| // Returns the name field of this class loader. If the name field has not |
| // been set, null will be returned. |
| oop java_lang_ClassLoader::name(oop loader) { |
| assert(is_instance(loader), "loader must be oop"); |
| return loader->obj_field(_name_offset); |
| } |
| |
| // Returns the nameAndId field of this class loader. The format is |
| // as follows: |
| // If the defining loader has a name explicitly set then '<loader-name>' @<id> |
| // If the defining loader has no name then <qualified-class-name> @<id> |
| // If built-in loader, then omit '@<id>' as there is only one instance. |
| // Use ClassLoader::loader_name_id() to obtain this String as a char*. |
| oop java_lang_ClassLoader::nameAndId(oop loader) { |
| assert(is_instance(loader), "loader must be oop"); |
| return loader->obj_field(_nameAndId_offset); |
| } |
| |
| bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) { |
| assert(is_instance(loader), "loader must be oop"); |
| assert(cl == NULL || is_instance(cl), "cl argument must be oop"); |
| oop acl = loader; |
| debug_only(jint loop_count = 0); |
| // This loop taken verbatim from ClassLoader.java: |
| do { |
| acl = parent(acl); |
| if (cl == acl) { |
| return true; |
| } |
| assert(++loop_count > 0, "loop_count overflow"); |
| } while (acl != NULL); |
| return false; |
| } |
| |
| bool java_lang_ClassLoader::is_instance(oop obj) { |
| return obj != NULL && is_subclass(obj->klass()); |
| } |
| |
| |
| // For class loader classes, parallelCapable defined |
| // based on non-null field |
| // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it |
| bool java_lang_ClassLoader::parallelCapable(oop class_loader) { |
| assert(_parallelCapable_offset != 0, "offsets should have been initialized"); |
| return (class_loader->obj_field(_parallelCapable_offset) != NULL); |
| } |
| |
| bool java_lang_ClassLoader::is_trusted_loader(oop loader) { |
| // Fix for 4474172; see evaluation for more details |
| loader = non_reflection_class_loader(loader); |
| |
| oop cl = SystemDictionary::java_system_loader(); |
| while(cl != NULL) { |
| if (cl == loader) return true; |
| cl = parent(cl); |
| } |
| return false; |
| } |
| |
| // Return true if this is one of the class loaders associated with |
| // the generated bytecodes for reflection. |
| bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) { |
| if (loader != NULL) { |
| Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass(); |
| // This might be null in non-1.4 JDKs |
| return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)); |
| } |
| return false; |
| } |
| |
| oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { |
| // See whether this is one of the class loaders associated with |
| // the generated bytecodes for reflection, and if so, "magically" |
| // delegate to its parent to prevent class loading from occurring |
| // in places where applications using reflection didn't expect it. |
| if (is_reflection_class_loader(loader)) { |
| return parent(loader); |
| } |
| return loader; |
| } |
| |
| oop java_lang_ClassLoader::unnamedModule(oop loader) { |
| assert(is_instance(loader), "loader must be oop"); |
| return loader->obj_field(_unnamedModule_offset); |
| } |
| |
| // Support for java_lang_System |
| // |
| |
| int java_lang_System::_static_in_offset; |
| int java_lang_System::_static_out_offset; |
| int java_lang_System::_static_err_offset; |
| int java_lang_System::_static_security_offset; |
| |
| #define SYSTEM_FIELDS_DO(macro) \ |
| macro(_static_in_offset, k, "in", input_stream_signature, true); \ |
| macro(_static_out_offset, k, "out", print_stream_signature, true); \ |
| macro(_static_err_offset, k, "err", print_stream_signature, true); \ |
| macro(_static_security_offset, k, "security", security_manager_signature, true) |
| |
| void java_lang_System::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::System_klass(); |
| SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_System::serialize_offsets(SerializeClosure* f) { |
| SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| // Support for jdk_internal_misc_UnsafeConstants |
| // |
| class UnsafeConstantsFixup : public FieldClosure { |
| private: |
| int _address_size; |
| int _page_size; |
| bool _big_endian; |
| bool _use_unaligned_access; |
| int _data_cache_line_flush_size; |
| public: |
| UnsafeConstantsFixup() { |
| // round up values for all static final fields |
| _address_size = sizeof(void*); |
| _page_size = os::vm_page_size(); |
| _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true); |
| _use_unaligned_access = UseUnalignedAccesses; |
| _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size(); |
| } |
| |
| void do_field(fieldDescriptor* fd) { |
| oop mirror = fd->field_holder()->java_mirror(); |
| assert(mirror != NULL, "UnsafeConstants must have mirror already"); |
| assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants"); |
| assert(fd->is_final(), "fields of UnsafeConstants must be final"); |
| assert(fd->is_static(), "fields of UnsafeConstants must be static"); |
| if (fd->name() == vmSymbols::address_size_name()) { |
| mirror->int_field_put(fd->offset(), _address_size); |
| } else if (fd->name() == vmSymbols::page_size_name()) { |
| mirror->int_field_put(fd->offset(), _page_size); |
| } else if (fd->name() == vmSymbols::big_endian_name()) { |
| mirror->bool_field_put(fd->offset(), _big_endian); |
| } else if (fd->name() == vmSymbols::use_unaligned_access_name()) { |
| mirror->bool_field_put(fd->offset(), _use_unaligned_access); |
| } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) { |
| mirror->int_field_put(fd->offset(), _data_cache_line_flush_size); |
| } else { |
| assert(false, "unexpected UnsafeConstants field"); |
| } |
| } |
| }; |
| |
| void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() { |
| UnsafeConstantsFixup fixup; |
| SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup); |
| } |
| |
| |
| // java_lang_StackTraceElement |
| |
| int java_lang_StackTraceElement::_methodName_offset; |
| int java_lang_StackTraceElement::_fileName_offset; |
| int java_lang_StackTraceElement::_lineNumber_offset; |
| int java_lang_StackTraceElement::_moduleName_offset; |
| int java_lang_StackTraceElement::_moduleVersion_offset; |
| int java_lang_StackTraceElement::_classLoaderName_offset; |
| int java_lang_StackTraceElement::_declaringClass_offset; |
| int java_lang_StackTraceElement::_declaringClassObject_offset; |
| |
| #define STACKTRACEELEMENT_FIELDS_DO(macro) \ |
| macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \ |
| macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \ |
| macro(_moduleName_offset, k, "moduleName", string_signature, false); \ |
| macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \ |
| macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \ |
| macro(_methodName_offset, k, "methodName", string_signature, false); \ |
| macro(_fileName_offset, k, "fileName", string_signature, false); \ |
| macro(_lineNumber_offset, k, "lineNumber", int_signature, false) |
| |
| // Support for java_lang_StackTraceElement |
| void java_lang_StackTraceElement::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::StackTraceElement_klass(); |
| STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) { |
| STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_StackTraceElement::set_fileName(oop element, oop value) { |
| element->obj_field_put(_fileName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { |
| element->obj_field_put(_declaringClass_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_methodName(oop element, oop value) { |
| element->obj_field_put(_methodName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { |
| element->int_field_put(_lineNumber_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_moduleName(oop element, oop value) { |
| element->obj_field_put(_moduleName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) { |
| element->obj_field_put(_moduleVersion_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) { |
| element->obj_field_put(_classLoaderName_offset, value); |
| } |
| |
| void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) { |
| element->obj_field_put(_declaringClassObject_offset, value); |
| } |
| |
| |
| // java_lang_AssertionStatusDirectives |
| |
| int java_lang_AssertionStatusDirectives::_classes_offset; |
| int java_lang_AssertionStatusDirectives::_classEnabled_offset; |
| int java_lang_AssertionStatusDirectives::_packages_offset; |
| int java_lang_AssertionStatusDirectives::_packageEnabled_offset; |
| int java_lang_AssertionStatusDirectives::_deflt_offset; |
| |
| // Support for java Assertions - java_lang_AssertionStatusDirectives. |
| #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \ |
| macro(_classes_offset, k, "classes", string_array_signature, false); \ |
| macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \ |
| macro(_packages_offset, k, "packages", string_array_signature, false); \ |
| macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \ |
| macro(_deflt_offset, k, "deflt", bool_signature, false) |
| |
| void java_lang_AssertionStatusDirectives::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass(); |
| ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) { |
| ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { |
| o->obj_field_put(_classes_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { |
| o->obj_field_put(_classEnabled_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { |
| o->obj_field_put(_packages_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { |
| o->obj_field_put(_packageEnabled_offset, val); |
| } |
| |
| void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { |
| o->bool_field_put(_deflt_offset, val); |
| } |
| |
| |
| // Support for intrinsification of java.nio.Buffer.checkIndex |
| |
| int java_nio_Buffer::_limit_offset; |
| |
| #define BUFFER_FIELDS_DO(macro) \ |
| macro(_limit_offset, k, "limit", int_signature, false) |
| |
| void java_nio_Buffer::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::nio_Buffer_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_nio_Buffer::serialize_offsets(SerializeClosure* f) { |
| BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset; |
| |
| #define AOS_FIELDS_DO(macro) \ |
| macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false) |
| |
| void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass(); |
| AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { |
| assert(_owner_offset != 0, "Must be initialized"); |
| return obj->obj_field(_owner_offset); |
| } |
| |
| #if INCLUDE_CDS |
| void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) { |
| AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| int vector_VectorPayload::_payload_offset; |
| |
| #define VECTORPAYLOAD_FIELDS_DO(macro) \ |
| macro(_payload_offset, k, "payload", object_signature, false) |
| |
| void vector_VectorPayload::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::vector_VectorPayload_klass(); |
| VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void vector_VectorPayload::serialize_offsets(SerializeClosure* f) { |
| VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void vector_VectorPayload::set_payload(oop o, oop val) { |
| o->obj_field_put(_payload_offset, val); |
| } |
| |
| bool vector_VectorPayload::is_instance(oop obj) { |
| return obj != NULL && is_subclass(obj->klass()); |
| } |
| |
| int java_lang_Integer_IntegerCache::_static_cache_offset; |
| int java_lang_Long_LongCache::_static_cache_offset; |
| int java_lang_Character_CharacterCache::_static_cache_offset; |
| int java_lang_Short_ShortCache::_static_cache_offset; |
| int java_lang_Byte_ByteCache::_static_cache_offset; |
| |
| #define INTEGER_CACHE_FIELDS_DO(macro) \ |
| macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true) |
| |
| void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return objArrayOop(base->obj_field(_static_cache_offset)); |
| } |
| |
| Symbol* java_lang_Integer_IntegerCache::symbol() { |
| return vmSymbols::java_lang_Integer_IntegerCache(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) { |
| INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef INTEGER_CACHE_FIELDS_DO |
| |
| jint java_lang_Integer::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.i; |
| } |
| |
| #define LONG_CACHE_FIELDS_DO(macro) \ |
| macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true) |
| |
| void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return objArrayOop(base->obj_field(_static_cache_offset)); |
| } |
| |
| Symbol* java_lang_Long_LongCache::symbol() { |
| return vmSymbols::java_lang_Long_LongCache(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) { |
| LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef LONG_CACHE_FIELDS_DO |
| |
| jlong java_lang_Long::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.j; |
| } |
| |
| #define CHARACTER_CACHE_FIELDS_DO(macro) \ |
| macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true) |
| |
| void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return objArrayOop(base->obj_field(_static_cache_offset)); |
| } |
| |
| Symbol* java_lang_Character_CharacterCache::symbol() { |
| return vmSymbols::java_lang_Character_CharacterCache(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) { |
| CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef CHARACTER_CACHE_FIELDS_DO |
| |
| jchar java_lang_Character::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.c; |
| } |
| |
| #define SHORT_CACHE_FIELDS_DO(macro) \ |
| macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true) |
| |
| void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return objArrayOop(base->obj_field(_static_cache_offset)); |
| } |
| |
| Symbol* java_lang_Short_ShortCache::symbol() { |
| return vmSymbols::java_lang_Short_ShortCache(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) { |
| SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef SHORT_CACHE_FIELDS_DO |
| |
| jshort java_lang_Short::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.s; |
| } |
| |
| #define BYTE_CACHE_FIELDS_DO(macro) \ |
| macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true) |
| |
| void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return objArrayOop(base->obj_field(_static_cache_offset)); |
| } |
| |
| Symbol* java_lang_Byte_ByteCache::symbol() { |
| return vmSymbols::java_lang_Byte_ByteCache(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) { |
| BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef BYTE_CACHE_FIELDS_DO |
| |
| jbyte java_lang_Byte::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.b; |
| } |
| |
| int java_lang_Boolean::_static_TRUE_offset; |
| int java_lang_Boolean::_static_FALSE_offset; |
| |
| #define BOOLEAN_FIELDS_DO(macro) \ |
| macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \ |
| macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true) |
| |
| |
| void java_lang_Boolean::compute_offsets(InstanceKlass *k) { |
| guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); |
| BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return base->obj_field(_static_TRUE_offset); |
| } |
| |
| oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) { |
| oop base = ik->static_field_base_raw(); |
| return base->obj_field(_static_FALSE_offset); |
| } |
| |
| Symbol* java_lang_Boolean::symbol() { |
| return vmSymbols::java_lang_Boolean(); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_Boolean::serialize_offsets(SerializeClosure* f) { |
| BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| #undef BOOLEAN_CACHE_FIELDS_DO |
| |
| jboolean java_lang_Boolean::value(oop obj) { |
| jvalue v; |
| java_lang_boxing_object::get_value(obj, &v); |
| return v.z; |
| } |
| |
| // java_lang_reflect_RecordComponent |
| |
| int java_lang_reflect_RecordComponent::_clazz_offset; |
| int java_lang_reflect_RecordComponent::_name_offset; |
| int java_lang_reflect_RecordComponent::_type_offset; |
| int java_lang_reflect_RecordComponent::_accessor_offset; |
| int java_lang_reflect_RecordComponent::_signature_offset; |
| int java_lang_reflect_RecordComponent::_annotations_offset; |
| int java_lang_reflect_RecordComponent::_typeAnnotations_offset; |
| |
| #define RECORDCOMPONENT_FIELDS_DO(macro) \ |
| macro(_clazz_offset, k, "clazz", class_signature, false); \ |
| macro(_name_offset, k, "name", string_signature, false); \ |
| macro(_type_offset, k, "type", class_signature, false); \ |
| macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \ |
| macro(_signature_offset, k, "signature", string_signature, false); \ |
| macro(_annotations_offset, k, "annotations", byte_array_signature, false); \ |
| macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false); |
| |
| // Support for java_lang_reflect_RecordComponent |
| void java_lang_reflect_RecordComponent::compute_offsets() { |
| InstanceKlass* k = SystemDictionary::RecordComponent_klass(); |
| RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) { |
| RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) { |
| element->obj_field_put(_clazz_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_name(oop element, oop value) { |
| element->obj_field_put(_name_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_type(oop element, oop value) { |
| element->obj_field_put(_type_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) { |
| element->obj_field_put(_accessor_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) { |
| element->obj_field_put(_signature_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) { |
| element->obj_field_put(_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) { |
| element->obj_field_put(_typeAnnotations_offset, value); |
| } |
| |
| // java_lang_InternalError |
| int java_lang_InternalError::_during_unsafe_access_offset; |
| |
| void java_lang_InternalError::set_during_unsafe_access(oop internal_error) { |
| internal_error->bool_field_put(_during_unsafe_access_offset, true); |
| } |
| |
| jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) { |
| return internal_error->bool_field(_during_unsafe_access_offset); |
| } |
| |
| void java_lang_InternalError::compute_offsets() { |
| INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| #if INCLUDE_CDS |
| void java_lang_InternalError::serialize_offsets(SerializeClosure* f) { |
| INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); |
| } |
| #endif |
| |
| #define DO_COMPUTE_OFFSETS(k) k::compute_offsets(); |
| |
| // Compute field offsets of all the classes in this file |
| void JavaClasses::compute_offsets() { |
| if (UseSharedSpaces) { |
| JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() && |
| JvmtiExport::has_early_class_hook_env()), |
| "JavaClasses::compute_offsets() must be called in early JVMTI phase.")); |
| // None of the classes used by the rest of this function can be replaced by |
| // JVMTI ClassFileLoadHook. |
| // We are safe to use the archived offsets, which have already been restored |
| // by JavaClasses::serialize_offsets, without computing the offsets again. |
| return; |
| } |
| |
| // We have already called the compute_offsets() of the |
| // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and |
| // java_lang_ref_Reference) earlier inside SystemDictionary::resolve_well_known_classes() |
| BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS); |
| } |
| |
| #if INCLUDE_CDS |
| #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc); |
| |
| void JavaClasses::serialize_offsets(SerializeClosure* soc) { |
| BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS); |
| } |
| #endif |
| |
| #if INCLUDE_CDS_JAVA_HEAP |
| bool JavaClasses::is_supported_for_archiving(oop obj) { |
| Klass* klass = obj->klass(); |
| |
| if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed. |
| // The next 3 classes are used to implement java.lang.invoke, and are not used directly in |
| // regular Java code. The implementation of java.lang.invoke uses generated anonymous classes |
| // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS. |
| // So for now we cannot not support these classes for archiving. |
| // |
| // These objects typically are not referenced by static fields, but rather by resolved |
| // constant pool entries, so excluding them shouldn't affect the archiving of static fields. |
| klass == SystemDictionary::ResolvedMethodName_klass() || |
| klass == SystemDictionary::MemberName_klass() || |
| klass == SystemDictionary::Context_klass()) { |
| return false; |
| } |
| |
| return true; |
| } |
| #endif |
| |
| #ifndef PRODUCT |
| |
| // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check. |
| |
| bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name, |
| const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name); |
| Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| TempNewSymbol f_name = SymbolTable::new_symbol(field_name); |
| TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig); |
| if (!ik->find_local_field(f_name, f_sig, &fd)) { |
| tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (fd.is_static()) { |
| tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); |
| return false; |
| } |
| if (fd.offset() == deserialized_offset ) { |
| return true; |
| } else { |
| tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.", |
| klass_name, field_name, deserialized_offset, fd.offset()); |
| return false; |
| } |
| } |
| |
| void JavaClasses::check_offsets() { |
| bool valid = true; |
| |
| #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig) |
| |
| #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig) |
| |
| // Boxed primitive objects (java_lang_boxing_object) |
| |
| CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); |
| CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); |
| CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); |
| CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); |
| CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); |
| CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); |
| CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); |
| CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); |
| |
| if (!valid) vm_exit_during_initialization("Field offset verification failed"); |
| } |
| |
| #endif // PRODUCT |
| |
| int InjectedField::compute_offset() { |
| InstanceKlass* ik = InstanceKlass::cast(klass()); |
| for (AllFieldStream fs(ik); !fs.done(); fs.next()) { |
| if (!may_be_java && !fs.access_flags().is_internal()) { |
| // Only look at injected fields |
| continue; |
| } |
| if (fs.name() == name() && fs.signature() == signature()) { |
| return fs.offset(); |
| } |
| } |
| ResourceMark rm; |
| tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : ""); |
| #ifndef PRODUCT |
| ik->print(); |
| tty->print_cr("all fields:"); |
| for (AllFieldStream fs(ik); !fs.done(); fs.next()) { |
| tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int()); |
| } |
| #endif //PRODUCT |
| vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class"); |
| return -1; |
| } |
| |
| void javaClasses_init() { |
| JavaClasses::compute_offsets(); |
| JavaClasses::check_offsets(); |
| FilteredFieldsMap::initialize(); // must be done after computing offsets. |
| } |