| /* |
| * Copyright (c) 1997, 2017, 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/javaClasses.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "code/debugInfo.hpp" |
| #include "code/pcDesc.hpp" |
| #include "compiler/compilerOracle.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/fieldStreams.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/instanceMirrorKlass.hpp" |
| #include "oops/klass.hpp" |
| #include "oops/method.hpp" |
| #include "oops/symbol.hpp" |
| #include "oops/typeArrayOop.hpp" |
| #include "prims/jvmtiRedefineClassesTrace.hpp" |
| #include "runtime/fieldDescriptor.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/java.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/safepoint.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/vframe.hpp" |
| #include "utilities/preserveException.hpp" |
| |
| PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
| |
| #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \ |
| klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum); |
| |
| #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \ |
| { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java }, |
| |
| InjectedField JavaClasses::_injected_fields[] = { |
| ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD) |
| }; |
| |
| 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; |
| |
| vmSymbols::SID sid = vmSymbols::find_sid(class_name); |
| if (sid == vmSymbols::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 == vmSymbols::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; |
| } |
| |
| |
| static bool find_field(InstanceKlass* ik, |
| Symbol* name_symbol, Symbol* signature_symbol, |
| fieldDescriptor* fd, |
| bool allow_super = false) { |
| if (allow_super) |
| return ik->find_field(name_symbol, signature_symbol, fd) != NULL; |
| else |
| return ik->find_local_field(name_symbol, signature_symbol, fd); |
| } |
| |
| // Helpful routine for computing field offsets at run time rather than hardcoding them |
| static void |
| compute_offset(int &dest_offset, |
| Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol, |
| bool allow_super = false) { |
| fieldDescriptor fd; |
| InstanceKlass* ik = InstanceKlass::cast(klass_oop); |
| if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { |
| ResourceMark rm; |
| tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); |
| #ifndef PRODUCT |
| klass_oop->print(); |
| tty->print_cr("all fields:"); |
| for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !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 preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class"); |
| } |
| dest_offset = fd.offset(); |
| } |
| |
| // Same as above but for "optional" offsets that might not be present in certain JDK versions |
| static void |
| compute_optional_offset(int& dest_offset, |
| Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol, |
| bool allow_super = false) { |
| fieldDescriptor fd; |
| InstanceKlass* ik = InstanceKlass::cast(klass_oop); |
| if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { |
| dest_offset = fd.offset(); |
| } |
| } |
| |
| |
| int java_lang_String::value_offset = 0; |
| int java_lang_String::offset_offset = 0; |
| int java_lang_String::count_offset = 0; |
| int java_lang_String::hash_offset = 0; |
| |
| bool java_lang_String::initialized = false; |
| |
| void java_lang_String::compute_offsets() { |
| assert(!initialized, "offsets should be initialized only once"); |
| |
| Klass* k = SystemDictionary::String_klass(); |
| compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature()); |
| compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature()); |
| compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature()); |
| compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature()); |
| |
| initialized = true; |
| } |
| |
| Handle java_lang_String::basic_create(int length, TRAPS) { |
| assert(initialized, "Must be initialized"); |
| // 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 = InstanceKlass::cast(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); |
| typeArrayOop buffer; |
| buffer = oopFactory::new_charArray(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 |
| assert(offset(obj) == 0, "initial String offset should be zero"); |
| //set_offset(obj, 0); |
| set_count(obj, length); |
| |
| return h_obj; |
| } |
| |
| Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { |
| Handle h_obj = basic_create(length, CHECK_NH); |
| typeArrayOop buffer = value(h_obj()); |
| for (int index = 0; index < length; index++) { |
| buffer->char_at_put(index, unicode[index]); |
| } |
| return h_obj; |
| } |
| |
| oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { |
| Handle h_obj = create_from_unicode(unicode, length, CHECK_0); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { |
| if (utf8_str == NULL) { |
| return Handle(); |
| } |
| int length = UTF8::unicode_length(utf8_str); |
| Handle h_obj = basic_create(length, CHECK_NH); |
| if (length > 0) { |
| UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); |
| } |
| 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_0); |
| return h_obj(); |
| } |
| |
| Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) { |
| int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); |
| Handle h_obj = basic_create(length, CHECK_NH); |
| if (length > 0) { |
| UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); |
| } |
| 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 (*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, "NewStringPlatform")); |
| if (_to_java_string_fn == NULL) { |
| fatal("NewStringPlatform missing"); |
| } |
| } |
| |
| jstring js = NULL; |
| { JavaThread* thread = (JavaThread*)THREAD; |
| assert(thread->is_Java_thread(), "must be java thread"); |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| js = (_to_java_string_fn)(thread->jni_environment(), str); |
| } |
| return Handle(THREAD, JNIHandles::resolve(js)); |
| } |
| |
| // 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 = (JavaThread*)THREAD; |
| assert(thread->is_Java_thread(), "must be java thread"); |
| JNIEnv *env = thread->jni_environment(); |
| jstring js = (jstring) JNIHandles::make_local(env, java_string()); |
| bool is_copy; |
| HandleMark hm(thread); |
| ThreadToNativeFromVM ttn(thread); |
| 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 offset = java_lang_String::offset(obj); |
| int length = java_lang_String::length(obj); |
| |
| // First check if any from_char exist |
| int index; // Declared outside, used later |
| for (index = 0; index < length; index++) { |
| if (value->char_at(index + offset) == from_char) { |
| break; |
| } |
| } |
| if (index == length) { |
| // No from_char, so do not copy. |
| return java_string; |
| } |
| |
| // Create new UNICODE buffer. Must handlize value because GC |
| // may happen during String and char array creation. |
| typeArrayHandle h_value(THREAD, value); |
| Handle string = basic_create(length, 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 = from_buffer->char_at(index + offset); |
| if (c == from_char) { |
| c = to_char; |
| } |
| to_buffer->char_at_put(index, c); |
| } |
| return string; |
| } |
| |
| jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| length = java_lang_String::length(java_string); |
| |
| jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length); |
| if (result != NULL) { |
| for (int index = 0; index < length; index++) { |
| result[index] = value->char_at(index + offset); |
| } |
| } 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) { |
| int length = java_lang_String::length(java_string); |
| // Zero length string will hash to zero with String.hashCode() function. |
| if (length == 0) return 0; |
| |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| return java_lang_String::hash_code(value->char_at_addr(offset), length); |
| } |
| |
| char* java_lang_String::as_quoted_ascii(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| |
| jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); |
| if (base == NULL) return NULL; |
| |
| int result_length = UNICODE::quoted_ascii_length(base, length) + 1; |
| char* 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; |
| } |
| |
| unsigned int java_lang_String::hash_string(oop java_string) { |
| int length = java_lang_String::length(java_string); |
| // Zero length string doesn't hash necessarily hash to zero. |
| if (length == 0) { |
| return StringTable::hash_string(NULL, 0); |
| } |
| |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| return StringTable::hash_string(value->char_at_addr(offset), length); |
| } |
| |
| Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) { |
| oop obj = java_string(); |
| typeArrayOop value = java_lang_String::value(obj); |
| int offset = java_lang_String::offset(obj); |
| int length = java_lang_String::length(obj); |
| jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); |
| Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD); |
| return sym; |
| } |
| |
| Symbol* java_lang_String::as_symbol_or_null(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); |
| return SymbolTable::probe_unicode(base, length); |
| } |
| |
| |
| int java_lang_String::utf8_length(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
| return UNICODE::utf8_length(position, length); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
| return UNICODE::as_utf8(position, length); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); |
| return UNICODE::as_utf8(position, length, buf, buflen); |
| } |
| |
| char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| assert(start + len <= length, "just checking"); |
| jchar* position = value->char_at_addr(offset + start); |
| return UNICODE::as_utf8(position, len); |
| } |
| |
| bool java_lang_String::equals(oop java_string, jchar* chars, int len) { |
| assert(java_string->klass() == SystemDictionary::String_klass(), |
| "must be java_string"); |
| typeArrayOop value = java_lang_String::value(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| if (length != len) { |
| return false; |
| } |
| for (int i = 0; i < len; i++) { |
| if (value->char_at(i + offset) != 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(str1); |
| int offset1 = java_lang_String::offset(str1); |
| int length1 = java_lang_String::length(str1); |
| typeArrayOop value2 = java_lang_String::value(str2); |
| int offset2 = java_lang_String::offset(str2); |
| int length2 = java_lang_String::length(str2); |
| |
| if (length1 != length2) { |
| return false; |
| } |
| for (int i = 0; i < length1; i++) { |
| if (value1->char_at(i + offset1) != value2->char_at(i + offset2)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| 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(java_string); |
| int offset = java_lang_String::offset(java_string); |
| int length = java_lang_String::length(java_string); |
| |
| int end = MIN2(length, 100); |
| if (value == NULL) { |
| // This can happen if, e.g., printing a String |
| // object before its initializer has been called |
| st->print_cr("NULL"); |
| } else { |
| st->print("\""); |
| for (int index = 0; index < length; index++) { |
| st->print("%c", value->char_at(index + offset)); |
| } |
| st->print("\""); |
| } |
| } |
| |
| |
| 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: |
| { |
| #ifdef ASSERT |
| TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK); |
| assert(fd->signature() == sym, "just checking"); |
| #endif |
| 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(KlassHandle 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->oop_is_instance()) { |
| // 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); |
| } |
| } |
| } |
| } |
| create_mirror(k, Handle(NULL), Handle(NULL), CHECK); |
| } |
| |
| void java_lang_Class::initialize_mirror_fields(KlassHandle k, |
| Handle mirror, |
| Handle protection_domain, |
| 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); |
| } |
| |
| void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader, |
| Handle protection_domain, TRAPS) { |
| 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) |
| Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK); |
| |
| // Setup indirection from mirror->klass |
| if (!k.is_null()) { |
| 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->oop_is_array()) { |
| Handle comp_mirror; |
| if (k->oop_is_typeArray()) { |
| BasicType type = TypeArrayKlass::cast(k())->element_type(); |
| comp_mirror = Universe::java_mirror(type); |
| } else { |
| assert(k->oop_is_objArray(), "Must be"); |
| Klass* element_klass = ObjArrayKlass::cast(k())->element_klass(); |
| assert(element_klass != NULL, "Must have an element klass"); |
| comp_mirror = element_klass->java_mirror(); |
| } |
| assert(comp_mirror.not_null(), "must have a mirror"); |
| |
| // Two-way link between the array klass and its component mirror: |
| ArrayKlass::cast(k())->set_component_mirror(comp_mirror()); |
| set_array_klass(comp_mirror(), k()); |
| } else { |
| assert(k->oop_is_instance(), "Must be"); |
| |
| initialize_mirror_fields(k, mirror, protection_domain, 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 last |
| // after any exceptions can happen during allocations. |
| if (!k.is_null()) { |
| k->set_java_mirror(mirror()); |
| } |
| } else { |
| if (fixup_mirror_list() == NULL) { |
| GrowableArray<Klass*>* list = |
| new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true); |
| set_fixup_mirror_list(list); |
| } |
| fixup_mirror_list()->push(k()); |
| } |
| } |
| |
| |
| int java_lang_Class::oop_size(oop java_class) { |
| assert(_oop_size_offset != 0, "must be set"); |
| return java_class->int_field(_oop_size_offset); |
| } |
| void java_lang_Class::set_oop_size(oop java_class, int size) { |
| assert(_oop_size_offset != 0, "must be set"); |
| java_class->int_field_put(_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); |
| } |
| 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); |
| } |
| |
| 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); |
| } |
| |
| |
| void java_lang_Class::set_class_loader(oop java_class, oop loader) { |
| // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet. |
| if (_class_loader_offset != 0) { |
| 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::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_0); |
| if (type != T_VOID) { |
| Klass* aklass = Universe::typeArrayKlassObj(type); |
| assert(aklass != NULL, "correct bootstrap"); |
| 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(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(_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->oop_is_instance(); |
| 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, TRAPS) { |
| 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->oop_is_instance()) { |
| 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, THREAD); |
| } |
| } |
| } |
| 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(oop java_class) { |
| Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset)); |
| assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass"); |
| return k; |
| } |
| |
| |
| void java_lang_Class::set_array_klass(oop java_class, Klass* klass) { |
| assert(klass->is_klass() && klass->oop_is_array(), "should be array klass"); |
| java_class->metadata_field_put(_array_klass_offset, klass); |
| } |
| |
| |
| bool java_lang_Class::is_primitive(oop java_class) { |
| // should assert: |
| //assert(java_lang_Class::is_instance(java_class), "must be a Class object"); |
| bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL); |
| |
| #ifdef ASSERT |
| if (is_primitive) { |
| Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset)); |
| assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()), |
| "Should be either the T_VOID primitive or a java primitive"); |
| } |
| #endif |
| |
| return is_primitive; |
| } |
| |
| |
| 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; |
| } |
| |
| bool java_lang_Class::offsets_computed = false; |
| int java_lang_Class::classRedefinedCount_offset = -1; |
| |
| void java_lang_Class::compute_offsets() { |
| assert(!offsets_computed, "offsets should be initialized only once"); |
| offsets_computed = true; |
| |
| Klass* klass_oop = SystemDictionary::Class_klass(); |
| // The classRedefinedCount field is only present starting in 1.5, |
| // so don't go fatal. |
| compute_optional_offset(classRedefinedCount_offset, |
| klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); |
| |
| // Needs to be optional because the old build runs Queens during bootstrapping |
| // and jdk8-9 doesn't have coordinated pushes yet. |
| compute_optional_offset(_class_loader_offset, |
| klass_oop, vmSymbols::classLoader_name(), |
| vmSymbols::classloader_signature()); |
| |
| CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| int java_lang_Class::classRedefinedCount(oop the_class_mirror) { |
| if (!JDK_Version::is_gte_jdk15x_version() |
| || classRedefinedCount_offset == -1) { |
| // The classRedefinedCount field is only present starting in 1.5. |
| // If we don't have an offset for it then just return -1 as a marker. |
| return -1; |
| } |
| |
| return the_class_mirror->int_field(classRedefinedCount_offset); |
| } |
| |
| void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { |
| if (!JDK_Version::is_gte_jdk15x_version() |
| || classRedefinedCount_offset == -1) { |
| // The classRedefinedCount field is only present starting in 1.5. |
| // If we don't have an offset for it then nothing to set. |
| return; |
| } |
| |
| 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 = 0; |
| int java_lang_Thread::_group_offset = 0; |
| int java_lang_Thread::_contextClassLoader_offset = 0; |
| int java_lang_Thread::_inheritedAccessControlContext_offset = 0; |
| int java_lang_Thread::_priority_offset = 0; |
| int java_lang_Thread::_eetop_offset = 0; |
| int java_lang_Thread::_daemon_offset = 0; |
| int java_lang_Thread::_stillborn_offset = 0; |
| int java_lang_Thread::_stackSize_offset = 0; |
| int java_lang_Thread::_tid_offset = 0; |
| int java_lang_Thread::_thread_status_offset = 0; |
| int java_lang_Thread::_park_blocker_offset = 0; |
| int java_lang_Thread::_park_event_offset = 0 ; |
| |
| |
| void java_lang_Thread::compute_offsets() { |
| assert(_group_offset == 0, "offsets should be initialized only once"); |
| |
| Klass* k = SystemDictionary::Thread_klass(); |
| compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); |
| compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); |
| compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); |
| compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); |
| compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
| compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); |
| compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); |
| // The stackSize field is only present starting in 1.4, so don't go fatal. |
| compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); |
| // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. |
| compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); |
| compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); |
| // The parkBlocker field is only present starting in 1.6, so don't go fatal. |
| compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); |
| compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(), |
| vmSymbols::long_signature()); |
| } |
| |
| |
| 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); |
| } |
| |
| |
| 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) { |
| // The stackSize field is only present starting in 1.4 |
| if (_stackSize_offset > 0) { |
| assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); |
| return java_thread->long_field(_stackSize_offset); |
| } else { |
| return 0; |
| } |
| } |
| |
| // Write the thread status value to threadStatus field in java.lang.Thread java class. |
| void java_lang_Thread::set_thread_status(oop java_thread, |
| java_lang_Thread::ThreadStatus status) { |
| // The threadStatus is only present starting in 1.5 |
| if (_thread_status_offset > 0) { |
| java_thread->int_field_put(_thread_status_offset, status); |
| } |
| } |
| |
| // Read thread status value from threadStatus field in java.lang.Thread java class. |
| java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { |
| assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() || |
| JavaThread::current()->thread_state() == _thread_in_vm, |
| "Java Thread is not running in vm"); |
| // The threadStatus is only present starting in 1.5 |
| if (_thread_status_offset > 0) { |
| return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
| } else { |
| // All we can easily figure out is if it is alive, but that is |
| // enough info for a valid unknown status. |
| // These aren't restricted to valid set ThreadStatus values, so |
| // use JVMTI values and cast. |
| JavaThread* thr = java_lang_Thread::thread(java_thread); |
| if (thr == NULL) { |
| // the thread hasn't run yet or is in the process of exiting |
| return NEW; |
| } |
| return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; |
| } |
| } |
| |
| |
| jlong java_lang_Thread::thread_id(oop java_thread) { |
| // The thread ID field is only present starting in 1.5 |
| if (_tid_offset > 0) { |
| return java_thread->long_field(_tid_offset); |
| } else { |
| return 0; |
| } |
| } |
| |
| oop java_lang_Thread::park_blocker(oop java_thread) { |
| assert(JDK_Version::current().supports_thread_park_blocker() && |
| _park_blocker_offset != 0, "Must support parkBlocker field"); |
| |
| if (_park_blocker_offset > 0) { |
| return java_thread->obj_field(_park_blocker_offset); |
| } |
| |
| return NULL; |
| } |
| |
| jlong java_lang_Thread::park_event(oop java_thread) { |
| if (_park_event_offset > 0) { |
| return java_thread->long_field(_park_event_offset); |
| } |
| return 0; |
| } |
| |
| bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { |
| if (_park_event_offset > 0) { |
| java_thread->long_field_put(_park_event_offset, ptr); |
| return true; |
| } |
| return false; |
| } |
| |
| |
| const char* java_lang_Thread::thread_status_name(oop java_thread) { |
| assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); |
| ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); |
| switch (status) { |
| case NEW : return "NEW"; |
| case RUNNABLE : return "RUNNABLE"; |
| case SLEEPING : return "TIMED_WAITING (sleeping)"; |
| case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; |
| case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; |
| case PARKED : return "WAITING (parking)"; |
| case PARKED_TIMED : return "TIMED_WAITING (parking)"; |
| case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; |
| case TERMINATED : return "TERMINATED"; |
| default : return "UNKNOWN"; |
| }; |
| } |
| int java_lang_ThreadGroup::_parent_offset = 0; |
| int java_lang_ThreadGroup::_name_offset = 0; |
| int java_lang_ThreadGroup::_threads_offset = 0; |
| int java_lang_ThreadGroup::_groups_offset = 0; |
| int java_lang_ThreadGroup::_maxPriority_offset = 0; |
| int java_lang_ThreadGroup::_destroyed_offset = 0; |
| int java_lang_ThreadGroup::_daemon_offset = 0; |
| int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; |
| int java_lang_ThreadGroup::_nthreads_offset = 0; |
| int java_lang_ThreadGroup::_ngroups_offset = 0; |
| |
| oop java_lang_ThreadGroup::parent(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->obj_field(_parent_offset); |
| } |
| |
| // ("name as oop" accessor is not necessary) |
| |
| typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { |
| oop name = java_thread_group->obj_field(_name_offset); |
| // ThreadGroup.name can be null |
| return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); |
| } |
| |
| int java_lang_ThreadGroup::nthreads(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "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(java_thread_group->is_oop(), "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(java_thread_group->is_oop(), "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(java_thread_group->is_oop(), "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(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->bool_field(_daemon_offset) != 0; |
| } |
| |
| bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { |
| assert(java_thread_group->is_oop(), "thread group must be oop"); |
| return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; |
| } |
| |
| void java_lang_ThreadGroup::compute_offsets() { |
| assert(_parent_offset == 0, "offsets should be initialized only once"); |
| |
| Klass* k = SystemDictionary::ThreadGroup_klass(); |
| |
| compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); |
| compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); |
| compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); |
| compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); |
| compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); |
| compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); |
| compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); |
| compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); |
| compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); |
| } |
| |
| oop java_lang_Throwable::unassigned_stacktrace() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass()); |
| address addr = ik->static_field_addr(static_unassigned_stacktrace_offset); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr); |
| } |
| } |
| |
| 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); |
| } |
| |
| |
| oop java_lang_Throwable::message(oop throwable) { |
| return throwable->obj_field(detailMessage_offset); |
| } |
| |
| |
| oop java_lang_Throwable::message(Handle throwable) { |
| return throwable->obj_field(detailMessage_offset); |
| } |
| |
| |
| 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) { |
| assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); |
| 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", InstanceKlass::cast(k)->external_name()); |
| oop msg = message(throwable); |
| if (msg != NULL) { |
| st->print(": %s", java_lang_String::as_utf8_string(msg)); |
| } |
| } |
| |
| |
| void java_lang_Throwable::print(Handle throwable, outputStream* st) { |
| ResourceMark rm; |
| Klass* k = throwable->klass(); |
| assert(k != NULL, "just checking"); |
| st->print("%s", InstanceKlass::cast(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; |
| |
| // Helper backtrace functions to store bci|version together. |
| static inline int merge_bci_and_version(int bci, int version) { |
| // only store u2 for version, checking for overflow. |
| if (version > USHRT_MAX || version < 0) version = MAX_VERSION; |
| assert((jushort)bci == bci, "bci should be short"); |
| return build_int_from_shorts(version, bci); |
| } |
| |
| static inline int bci_at(unsigned int merged) { |
| return extract_high_short_from_int(merged); |
| } |
| static inline int version_at(unsigned int merged) { |
| return extract_low_short_from_int(merged); |
| } |
| |
| static inline bool version_matches(Method* method, int version) { |
| assert(version < MAX_VERSION, "version is too big"); |
| return method != NULL && (method->constants()->version() == version); |
| } |
| |
| static inline int get_line_number(Method* method, int bci) { |
| int line_number = 0; |
| if (method->is_native()) { |
| // Negative value different from -1 below, enabling Java code in |
| // class java.lang.StackTraceElement to distinguish "native" from |
| // "no LineNumberTable". JDK tests for -2. |
| line_number = -2; |
| } else { |
| // Returns -1 if no LineNumberTable, and otherwise actual line number |
| line_number = method->line_number_from_bci(bci); |
| if (line_number == -1 && ShowHiddenFrames) { |
| line_number = bci + 1000000; |
| } |
| } |
| return line_number; |
| } |
| |
| // 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. |
| class BacktraceBuilder: public StackObj { |
| private: |
| Handle _backtrace; |
| objArrayOop _head; |
| typeArrayOop _methods; |
| typeArrayOop _bcis; |
| objArrayOop _mirrors; |
| typeArrayOop _cprefs; // needed to insulate method name against redefinition |
| int _index; |
| No_Safepoint_Verifier _nsv; |
| |
| public: |
| |
| 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_cprefs_offset = java_lang_Throwable::trace_cprefs_offset, |
| trace_next_offset = java_lang_Throwable::trace_next_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_cprefs(objArrayHandle chunk) { |
| typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset)); |
| assert(cprefs != NULL, "cprefs array should be initialized in backtrace"); |
| return cprefs; |
| } |
| |
| // constructor for new backtrace |
| BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) { |
| expand(CHECK); |
| _backtrace = _head; |
| _index = 0; |
| } |
| |
| BacktraceBuilder(objArrayHandle backtrace) { |
| _methods = get_methods(backtrace); |
| _bcis = get_bcis(backtrace); |
| _mirrors = get_mirrors(backtrace); |
| _cprefs = get_cprefs(backtrace); |
| assert(_methods->length() == _bcis->length() && |
| _methods->length() == _mirrors->length(), |
| "method and source information arrays should match"); |
| |
| // head is the preallocated backtrace |
| _backtrace = _head = backtrace(); |
| _index = 0; |
| } |
| |
| void expand(TRAPS) { |
| objArrayHandle old_head(THREAD, _head); |
| Pause_No_Safepoint_Verifier 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 cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK); |
| typeArrayHandle new_cprefs(THREAD, cprefs); |
| |
| 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_cprefs_offset, new_cprefs()); |
| |
| _head = new_head(); |
| _methods = new_methods(); |
| _bcis = new_bcis(); |
| _mirrors = new_mirrors(); |
| _cprefs = new_cprefs(); |
| _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->short_at_put(_index, method->orig_method_idnum()); |
| _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version())); |
| _cprefs->short_at_put(_index, method->name_index()); |
| |
| // 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++; |
| } |
| |
| }; |
| |
| // Print stack trace element to resource allocated buffer |
| char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror, |
| int method_id, int version, int bci, int cpref) { |
| |
| // 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); |
| |
| Method* method = holder->method_with_orig_idnum(method_id, version); |
| |
| // The method can be NULL if the requested class version is gone |
| Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref); |
| char* method_name = sym->as_C_string(); |
| buf_len += (int)strlen(method_name); |
| |
| // Use a specific ik version as a holder since the mirror might |
| // refer to a version that is now obsolete and no longer accessible |
| // via the previous versions list. |
| holder = holder->get_klass_version(version); |
| char* source_file_name = NULL; |
| if (holder != NULL) { |
| Symbol* source = holder->source_file_name(); |
| if (source != NULL) { |
| source_file_name = source->as_C_string(); |
| buf_len += (int)strlen(source_file_name); |
| } |
| } |
| |
| // 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); |
| |
| if (!version_matches(method, version)) { |
| strcat(buf, "(Redefined)"); |
| } else { |
| int line_number = 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)"); |
| } |
| nmethod* nm = method->code(); |
| if (WizardMode && nm != NULL) { |
| sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm); |
| } |
| } |
| } |
| |
| return buf; |
| } |
| |
| void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror, |
| int method_id, int version, int bci, int cpref) { |
| ResourceMark rm; |
| char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci, cpref); |
| st->print_cr("%s", buf); |
| } |
| |
| void java_lang_Throwable::print_stack_element(outputStream *st, methodHandle method, int bci) { |
| Handle mirror = method->method_holder()->java_mirror(); |
| int method_id = method->orig_method_idnum(); |
| int version = method->constants()->version(); |
| int cpref = method->name_index(); |
| print_stack_element(st, mirror, method_id, version, bci, cpref); |
| } |
| |
| const char* java_lang_Throwable::no_stack_trace_message() { |
| return "\t<<no stack trace available>>"; |
| } |
| |
| |
| // Currently used only for exceptions occurring during startup |
| void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { |
| Thread *THREAD = Thread::current(); |
| Handle h_throwable(THREAD, throwable); |
| while (h_throwable.not_null()) { |
| objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); |
| if (result.is_null()) { |
| st->print_cr("%s", no_stack_trace_message()); |
| return; |
| } |
| |
| while (result.not_null()) { |
| |
| // Get method id, bci, version and mirror from chunk |
| typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result)); |
| typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result)); |
| objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result)); |
| typeArrayHandle cprefs (THREAD, BacktraceBuilder::get_cprefs(result)); |
| |
| int length = methods()->length(); |
| for (int index = 0; index < length; index++) { |
| Handle mirror(THREAD, mirrors->obj_at(index)); |
| // NULL mirror means end of stack trace |
| if (mirror.is_null()) goto handle_cause; |
| int method = methods->short_at(index); |
| int version = version_at(bcis->int_at(index)); |
| int bci = bci_at(bcis->int_at(index)); |
| int cpref = cprefs->short_at(index); |
| print_stack_element(st, mirror, method, version, bci, cpref); |
| } |
| result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); |
| } |
| handle_cause: |
| { |
| EXCEPTION_MARK; |
| JavaValue cause(T_OBJECT); |
| JavaCalls::call_virtual(&cause, |
| h_throwable, |
| KlassHandle(THREAD, h_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; |
| h_throwable = Handle(); |
| } else { |
| h_throwable = Handle(THREAD, (oop) cause.get_jobject()); |
| if (h_throwable.not_null()) { |
| st->print("Caused by: "); |
| print(h_throwable, st); |
| st->cr(); |
| } |
| } |
| } |
| } |
| } |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable, 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); |
| if (JDK_Version::is_gte_jdk14x_version()) { |
| // New since 1.4, 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 = (JavaThread*)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); |
| 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); |
| methodHandle st_method(THREAD, st.method()); |
| #endif |
| int total_count = 0; |
| RegisterMap map(thread, false); |
| int decode_offset = 0; |
| nmethod* nm = NULL; |
| bool skip_fillInStackTrace_check = false; |
| bool skip_throwableInit_check = false; |
| bool skip_hidden = !ShowHiddenFrames; |
| |
| for (frame fr = thread->last_frame(); 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()) { |
| intptr_t bcx = fr.interpreter_frame_bcx(); |
| method = fr.interpreter_frame_method(); |
| bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); |
| 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_nmethod()) { |
| continue; |
| } |
| nm = (nmethod*)cb; |
| 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(); |
| // vframeStream::method isn't GC-safe so store off a copy |
| // of the Method* in case we GC. |
| if (!st.at_end()) { |
| st_method = st.method(); |
| } |
| #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() || |
| method->name() == vmSymbols::fillInStackTrace0_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) continue; |
| } |
| bt.push(method, bci, CHECK); |
| total_count++; |
| } |
| |
| // Put completed stack trace into throwable object |
| set_backtrace(throwable(), bt.backtrace()); |
| } |
| |
| void java_lang_Throwable::fill_in_stack_trace(Handle throwable, 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); |
| |
| BacktraceBuilder bt(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 |
| typeArrayOop methods = BacktraceBuilder::get_methods(backtrace); |
| int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); |
| 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 >= max_chunks) break; |
| } |
| |
| // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support |
| // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround |
| // can be removed in a JDK using this JVM version |
| if (JDK_Version::is_gte_jdk17x_version()) { |
| java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace()); |
| assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized"); |
| } |
| } |
| |
| |
| int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { |
| if (throwable == NULL) { |
| THROW_0(vmSymbols::java_lang_NullPointerException()); |
| } |
| objArrayOop chunk = objArrayOop(backtrace(throwable)); |
| int depth = 0; |
| if (chunk != NULL) { |
| // Iterate over chunks and count full ones |
| while (true) { |
| objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); |
| if (next == NULL) break; |
| depth += trace_chunk_size; |
| chunk = next; |
| } |
| assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); |
| // Count element in remaining partial chunk. NULL value for mirror |
| // marks the end of the stack trace elements that are saved. |
| objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk); |
| assert(mirrors != NULL, "sanity check"); |
| for (int i = 0; i < mirrors->length(); i++) { |
| if (mirrors->obj_at(i) == NULL) break; |
| depth++; |
| } |
| } |
| return depth; |
| } |
| |
| |
| oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { |
| if (throwable == NULL) { |
| THROW_0(vmSymbols::java_lang_NullPointerException()); |
| } |
| if (index < 0) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| // Compute how many chunks to skip and index into actual chunk |
| objArrayOop chunk = objArrayOop(backtrace(throwable)); |
| int skip_chunks = index / trace_chunk_size; |
| int chunk_index = index % trace_chunk_size; |
| while (chunk != NULL && skip_chunks > 0) { |
| chunk = objArrayOop(chunk->obj_at(trace_next_offset)); |
| skip_chunks--; |
| } |
| if (chunk == NULL) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| // Get method id, bci, version, mirror and cpref from chunk |
| typeArrayOop methods = BacktraceBuilder::get_methods(chunk); |
| typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk); |
| objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk); |
| typeArrayOop cprefs = BacktraceBuilder::get_cprefs(chunk); |
| |
| assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check"); |
| |
| int method = methods->short_at(chunk_index); |
| int version = version_at(bcis->int_at(chunk_index)); |
| int bci = bci_at(bcis->int_at(chunk_index)); |
| int cpref = cprefs->short_at(chunk_index); |
| Handle mirror(THREAD, mirrors->obj_at(chunk_index)); |
| |
| // Chunk can be partial full |
| if (mirror.is_null()) { |
| THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); |
| } |
| oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, cpref, CHECK_0); |
| return element; |
| } |
| |
| oop java_lang_StackTraceElement::create(Handle mirror, int method_id, |
| int version, int bci, int cpref, TRAPS) { |
| // Allocate java.lang.StackTraceElement instance |
| Klass* k = SystemDictionary::StackTraceElement_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| instanceKlassHandle ik (THREAD, k); |
| if (ik->should_be_initialized()) { |
| ik->initialize(CHECK_0); |
| } |
| |
| Handle element = ik->allocate_instance_handle(CHECK_0); |
| // Fill in class name |
| ResourceMark rm(THREAD); |
| InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror())); |
| const char* str = holder->external_name(); |
| oop classname = StringTable::intern((char*) str, CHECK_0); |
| java_lang_StackTraceElement::set_declaringClass(element(), classname); |
| |
| Method* method = holder->method_with_orig_idnum(method_id, version); |
| |
| // The method can be NULL if the requested class version is gone |
| Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref); |
| |
| // Fill in method name |
| oop methodname = StringTable::intern(sym, CHECK_0); |
| java_lang_StackTraceElement::set_methodName(element(), methodname); |
| |
| if (!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 { |
| // Fill in source file name and line number. |
| // Use a specific ik version as a holder since the mirror might |
| // refer to a version that is now obsolete and no longer accessible |
| // via the previous versions list. |
| holder = holder->get_klass_version(version); |
| assert(holder != NULL, "sanity check"); |
| Symbol* source = holder->source_file_name(); |
| if (ShowHiddenFrames && source == NULL) |
| source = vmSymbols::unknown_class_name(); |
| oop filename = StringTable::intern(source, CHECK_0); |
| java_lang_StackTraceElement::set_fileName(element(), filename); |
| |
| int line_number = get_line_number(method, bci); |
| java_lang_StackTraceElement::set_lineNumber(element(), line_number); |
| } |
| return element(); |
| } |
| |
| oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { |
| Handle mirror (THREAD, method->method_holder()->java_mirror()); |
| int method_id = method->orig_method_idnum(); |
| int cpref = method->name_index(); |
| return create(mirror, method_id, method->constants()->version(), bci, cpref, THREAD); |
| } |
| |
| void java_lang_reflect_AccessibleObject::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_AccessibleObject_klass(); |
| compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); |
| } |
| |
| jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return (jboolean) reflect->bool_field(override_offset); |
| } |
| |
| void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->bool_field_put(override_offset, (int) value); |
| } |
| |
| void java_lang_reflect_Method::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_Method_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); |
| compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| parameter_annotations_offset = -1; |
| annotation_default_offset = -1; |
| type_annotations_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| 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(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Method::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| int java_lang_reflect_Method::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Method::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::name(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(name_offset); |
| } |
| |
| void java_lang_reflect_Method::set_name(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(name_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::return_type(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(returnType_offset); |
| } |
| |
| void java_lang_reflect_Method::set_return_type(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(returnType_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::parameter_types(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(parameterTypes_offset, value); |
| } |
| |
| oop java_lang_reflect_Method::exception_types(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->obj_field(exceptionTypes_offset); |
| } |
| |
| void java_lang_reflect_Method::set_exception_types(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->obj_field_put(exceptionTypes_offset, value); |
| } |
| |
| int java_lang_reflect_Method::modifiers(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return method->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Method::set_modifiers(oop method, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| method->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::signature(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return method->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Method::set_signature(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| method->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return method->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Method::set_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| method->obj_field_put(annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_parameter_annotations_field() { |
| return (parameter_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::parameter_annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| return method->obj_field(parameter_annotations_offset); |
| } |
| |
| void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| method->obj_field_put(parameter_annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_annotation_default_field() { |
| return (annotation_default_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::annotation_default(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotation_default_field(), "annotation default field must be present"); |
| return method->obj_field(annotation_default_offset); |
| } |
| |
| void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotation_default_field(), "annotation default field must be present"); |
| method->obj_field_put(annotation_default_offset, value); |
| } |
| |
| bool java_lang_reflect_Method::has_type_annotations_field() { |
| return (type_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Method::type_annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| return method->obj_field(type_annotations_offset); |
| } |
| |
| void java_lang_reflect_Method::set_type_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| method->obj_field_put(type_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Constructor::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_Constructor_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| parameter_annotations_offset = -1; |
| type_annotations_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| 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); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Constructor::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Constructor::parameter_types(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->obj_field(parameterTypes_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->obj_field_put(parameterTypes_offset, value); |
| } |
| |
| oop java_lang_reflect_Constructor::exception_types(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->obj_field(exceptionTypes_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->obj_field_put(exceptionTypes_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| int java_lang_reflect_Constructor::modifiers(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return constructor->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| constructor->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::signature(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return constructor->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| constructor->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::annotations(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return constructor->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| constructor->obj_field_put(annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_parameter_annotations_field() { |
| return (parameter_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::parameter_annotations(oop method) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| return method->obj_field(parameter_annotations_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_parameter_annotations_field(), "parameter annotations field must be present"); |
| method->obj_field_put(parameter_annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Constructor::has_type_annotations_field() { |
| return (type_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Constructor::type_annotations(oop constructor) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| return constructor->obj_field(type_annotations_offset); |
| } |
| |
| void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| constructor->obj_field_put(type_annotations_offset, value); |
| } |
| |
| void java_lang_reflect_Field::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_Field_klass(); |
| compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); |
| compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| // The generic signature and annotations fields are only present in 1.5 |
| signature_offset = -1; |
| annotations_offset = -1; |
| type_annotations_offset = -1; |
| compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); |
| compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); |
| compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature()); |
| } |
| |
| 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); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Field::clazz(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->obj_field(clazz_offset); |
| } |
| |
| void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->obj_field_put(clazz_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::name(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->obj_field(name_offset); |
| } |
| |
| void java_lang_reflect_Field::set_name(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->obj_field_put(name_offset, value); |
| } |
| |
| oop java_lang_reflect_Field::type(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->obj_field(type_offset); |
| } |
| |
| void java_lang_reflect_Field::set_type(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->obj_field_put(type_offset, value); |
| } |
| |
| int java_lang_reflect_Field::slot(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return reflect->int_field(slot_offset); |
| } |
| |
| void java_lang_reflect_Field::set_slot(oop reflect, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| reflect->int_field_put(slot_offset, value); |
| } |
| |
| int java_lang_reflect_Field::modifiers(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return field->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Field::set_modifiers(oop field, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| field->int_field_put(modifiers_offset, value); |
| } |
| |
| bool java_lang_reflect_Field::has_signature_field() { |
| return (signature_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Field::signature(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| return field->obj_field(signature_offset); |
| } |
| |
| void java_lang_reflect_Field::set_signature(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_signature_field(), "signature field must be present"); |
| field->obj_field_put(signature_offset, value); |
| } |
| |
| bool java_lang_reflect_Field::has_annotations_field() { |
| return (annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Field::annotations(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| return field->obj_field(annotations_offset); |
| } |
| |
| void java_lang_reflect_Field::set_annotations(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_annotations_field(), "annotations field must be present"); |
| field->obj_field_put(annotations_offset, value); |
| } |
| |
| bool java_lang_reflect_Field::has_type_annotations_field() { |
| return (type_annotations_offset >= 0); |
| } |
| |
| oop java_lang_reflect_Field::type_annotations(oop field) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| return field->obj_field(type_annotations_offset); |
| } |
| |
| void java_lang_reflect_Field::set_type_annotations(oop field, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| assert(has_type_annotations_field(), "type_annotations field must be present"); |
| field->obj_field_put(type_annotations_offset, value); |
| } |
| |
| void sun_reflect_ConstantPool::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_ConstantPool_klass(); |
| // This null test can be removed post beta |
| if (k != NULL) { |
| // The field is called ConstantPool* in the sun.reflect.ConstantPool class. |
| compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature()); |
| } |
| } |
| |
| void java_lang_reflect_Parameter::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_Parameter_klass(); |
| if(NULL != k) { |
| compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); |
| compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature()); |
| compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature()); |
| } |
| } |
| |
| 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); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| oop java_lang_reflect_Parameter::name(oop param) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return param->obj_field(name_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_name(oop param, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| param->obj_field_put(name_offset, value); |
| } |
| |
| int java_lang_reflect_Parameter::modifiers(oop param) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return param->int_field(modifiers_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_modifiers(oop param, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| param->int_field_put(modifiers_offset, value); |
| } |
| |
| int java_lang_reflect_Parameter::index(oop param) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return param->int_field(index_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_index(oop param, int value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| param->int_field_put(index_offset, value); |
| } |
| |
| oop java_lang_reflect_Parameter::executable(oop param) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| return param->obj_field(executable_offset); |
| } |
| |
| void java_lang_reflect_Parameter::set_executable(oop param, oop value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| param->obj_field_put(executable_offset, value); |
| } |
| |
| |
| Handle sun_reflect_ConstantPool::create(TRAPS) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| Klass* k = SystemDictionary::reflect_ConstantPool_klass(); |
| instanceKlassHandle klass (THREAD, k); |
| // Ensure it is initialized |
| klass->initialize(CHECK_NH); |
| return klass->allocate_instance_handle(CHECK_NH); |
| } |
| |
| |
| void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| oop mirror = value->pool_holder()->java_mirror(); |
| // Save the mirror to get back the constant pool. |
| reflect->obj_field_put(_oop_offset, mirror); |
| } |
| |
| ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) { |
| assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); |
| |
| oop mirror = reflect->obj_field(_oop_offset); |
| Klass* k = java_lang_Class::as_Klass(mirror); |
| assert(k->oop_is_instance(), "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(); |
| } |
| |
| void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { |
| Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(); |
| // This null test can be removed post beta |
| if (k != NULL) { |
| compute_offset(_base_offset, k, |
| vmSymbols::base_name(), vmSymbols::object_signature()); |
| } |
| } |
| |
| oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { |
| Klass* k = SystemDictionary::box_klass(type); |
| if (k == NULL) return NULL; |
| instanceKlassHandle h (THREAD, k); |
| if (!h->is_initialized()) h->initialize(CHECK_0); |
| return h->allocate_instance(THREAD); |
| } |
| |
| |
| oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { |
| oop box = initialize_and_allocate(type, CHECK_0); |
| 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(INT64_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_Reference |
| HeapWord *java_lang_ref_Reference::pending_list_lock_addr() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); |
| address addr = ik->static_field_addr(static_lock_offset); |
| return (HeapWord*) addr; |
| } |
| |
| oop java_lang_ref_Reference::pending_list_lock() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); |
| address addr = ik->static_field_addr(static_lock_offset); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr); |
| } |
| } |
| |
| HeapWord *java_lang_ref_Reference::pending_list_addr() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); |
| address addr = ik->static_field_addr(static_pending_offset); |
| // XXX This might not be HeapWord aligned, almost rather be char *. |
| return (HeapWord*)addr; |
| } |
| |
| oop java_lang_ref_Reference::pending_list() { |
| char *addr = (char *)pending_list_addr(); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr); |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr); |
| } |
| } |
| |
| |
| // Support for java_lang_ref_SoftReference |
| |
| jlong java_lang_ref_SoftReference::timestamp(oop ref) { |
| return ref->long_field(timestamp_offset); |
| } |
| |
| jlong java_lang_ref_SoftReference::clock() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass()); |
| jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); |
| return *offset; |
| } |
| |
| void java_lang_ref_SoftReference::set_clock(jlong value) { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass()); |
| jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); |
| *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; |
| bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh); |
| assert(is_dmh, "a DirectMethodHandle oop is expected"); |
| if (is_dmh) { |
| member_name = dmh->obj_field(member_offset_in_bytes()); |
| } |
| return member_name; |
| } |
| |
| void java_lang_invoke_DirectMethodHandle::compute_offsets() { |
| Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass(); |
| if (klass_oop != NULL && EnableInvokeDynamic) { |
| compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature()); |
| } |
| } |
| |
| // 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::_vmtarget_offset; |
| int java_lang_invoke_MemberName::_vmloader_offset; |
| int java_lang_invoke_MemberName::_vmindex_offset; |
| |
| int java_lang_invoke_LambdaForm::_vmentry_offset; |
| |
| void java_lang_invoke_MethodHandle::compute_offsets() { |
| Klass* klass_oop = SystemDictionary::MethodHandle_klass(); |
| if (klass_oop != NULL && EnableInvokeDynamic) { |
| compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature()); |
| compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature()); |
| if (_form_offset == 0) { |
| EnableInvokeDynamic = false; |
| } |
| } |
| } |
| |
| void java_lang_invoke_MemberName::compute_offsets() { |
| Klass* klass_oop = SystemDictionary::MemberName_klass(); |
| if (klass_oop != NULL && EnableInvokeDynamic) { |
| compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature()); |
| compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature()); |
| compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature()); |
| compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature()); |
| MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| } |
| |
| void java_lang_invoke_LambdaForm::compute_offsets() { |
| Klass* klass_oop = SystemDictionary::LambdaForm_klass(); |
| if (klass_oop != NULL && EnableInvokeDynamic) { |
| compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature()); |
| } |
| } |
| |
| 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); |
| } |
| |
| Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) { |
| assert(is_instance(mname), "wrong type"); |
| return (Metadata*)mname->address_field(_vmtarget_offset); |
| } |
| |
| 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_vmtarget(oop mname, Metadata* ref) { |
| assert(is_instance(mname), "wrong type"); |
| // check the type of the vmtarget |
| oop dependency = NULL; |
| if (ref != NULL) { |
| switch (flags(mname) & (MN_IS_METHOD | |
| MN_IS_CONSTRUCTOR | |
| MN_IS_FIELD)) { |
| case MN_IS_METHOD: |
| case MN_IS_CONSTRUCTOR: |
| assert(ref->is_method(), "should be a method"); |
| dependency = ((Method*)ref)->method_holder()->java_mirror(); |
| break; |
| case MN_IS_FIELD: |
| assert(ref->is_klass(), "should be a class"); |
| dependency = ((Klass*)ref)->java_mirror(); |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| } |
| mname->address_field_put(_vmtarget_offset, (address)ref); |
| // Add a reference to the loader (actually mirror because 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. |
| mname->obj_field_put(_vmloader_offset, dependency); |
| } |
| |
| 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); |
| } |
| |
| bool java_lang_invoke_MemberName::equals(oop mn1, oop mn2) { |
| if (mn1 == mn2) { |
| return true; |
| } |
| return (vmtarget(mn1) == vmtarget(mn2) && flags(mn1) == flags(mn2) && |
| vmindex(mn1) == vmindex(mn2) && |
| clazz(mn1) == clazz(mn2)); |
| } |
| |
| 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; |
| |
| void java_lang_invoke_MethodType::compute_offsets() { |
| Klass* k = SystemDictionary::MethodType_klass(); |
| if (k != NULL) { |
| compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature()); |
| compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature()); |
| } |
| } |
| |
| 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, TRAPS) { |
| 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, THREAD); |
| } |
| 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; |
| |
| void java_lang_invoke_CallSite::compute_offsets() { |
| if (!EnableInvokeDynamic) return; |
| Klass* k = SystemDictionary::CallSite_klass(); |
| if (k != NULL) { |
| compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature()); |
| } |
| } |
| |
| |
| // Support for java_security_AccessControlContext |
| |
| int java_security_AccessControlContext::_context_offset = 0; |
| int java_security_AccessControlContext::_privilegedContext_offset = 0; |
| int java_security_AccessControlContext::_isPrivileged_offset = 0; |
| int java_security_AccessControlContext::_isAuthorized_offset = -1; |
| |
| void java_security_AccessControlContext::compute_offsets() { |
| assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); |
| fieldDescriptor fd; |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass()); |
| |
| if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _context_offset = fd.offset(); |
| |
| if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _privilegedContext_offset = fd.offset(); |
| |
| if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { |
| fatal("Invalid layout of java.security.AccessControlContext"); |
| } |
| _isPrivileged_offset = fd.offset(); |
| |
| // The offset may not be present for bootstrapping with older JDK. |
| if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) { |
| _isAuthorized_offset = fd.offset(); |
| } |
| } |
| |
| |
| bool java_security_AccessControlContext::is_authorized(Handle context) { |
| assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type"); |
| assert(_isAuthorized_offset != -1, "should be set"); |
| return context->bool_field(_isAuthorized_offset) != 0; |
| } |
| |
| oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { |
| assert(_isPrivileged_offset != 0, "offsets should have been initialized"); |
| // Ensure klass is initialized |
| InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); |
| // Allocate result |
| oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); |
| // 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); |
| // whitelist AccessControlContexts created by the JVM if present |
| if (_isAuthorized_offset != -1) { |
| result->bool_field_put(_isAuthorized_offset, true); |
| } |
| return result; |
| } |
| |
| |
| // Support for java_lang_ClassLoader |
| |
| bool java_lang_ClassLoader::offsets_computed = false; |
| int java_lang_ClassLoader::_loader_data_offset = -1; |
| int java_lang_ClassLoader::parallelCapable_offset = -1; |
| |
| ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) { |
| assert(loader != NULL && loader->is_oop(), "loader must be oop"); |
| return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset); |
| } |
| |
| ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) { |
| return *java_lang_ClassLoader::loader_data_addr(loader); |
| } |
| |
| void java_lang_ClassLoader::compute_offsets() { |
| assert(!offsets_computed, "offsets should be initialized only once"); |
| offsets_computed = true; |
| |
| // The field indicating parallelCapable (parallelLockMap) is only present starting in 7, |
| Klass* k1 = SystemDictionary::ClassLoader_klass(); |
| compute_optional_offset(parallelCapable_offset, |
| k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature()); |
| |
| CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); |
| } |
| |
| oop java_lang_ClassLoader::parent(oop loader) { |
| assert(is_instance(loader), "loader must be oop"); |
| return loader->obj_field(parent_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; |
| } |
| |
| |
| // 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) { |
| if (!JDK_Version::is_gte_jdk17x_version() |
| || parallelCapable_offset == -1) { |
| // Default for backward compatibility is false |
| return false; |
| } |
| 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; |
| } |
| |
| oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { |
| if (loader != NULL) { |
| // 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. |
| Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass(); |
| // This might be null in non-1.4 JDKs |
| if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { |
| return parent(loader); |
| } |
| } |
| return loader; |
| } |
| |
| |
| // Support for java_lang_System |
| int java_lang_System::in_offset_in_bytes() { |
| return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset); |
| } |
| |
| |
| int java_lang_System::out_offset_in_bytes() { |
| return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset); |
| } |
| |
| |
| int java_lang_System::err_offset_in_bytes() { |
| return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset); |
| } |
| |
| |
| bool java_lang_System::has_security_manager() { |
| InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::System_klass()); |
| address addr = ik->static_field_addr(static_security_offset); |
| if (UseCompressedOops) { |
| return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL; |
| } else { |
| return oopDesc::load_decode_heap_oop((oop*)addr) != NULL; |
| } |
| } |
| |
| 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::_protection_domain_offset; |
| int java_lang_Class::_init_lock_offset; |
| int java_lang_Class::_signers_offset; |
| GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL; |
| int java_lang_Throwable::backtrace_offset; |
| int java_lang_Throwable::detailMessage_offset; |
| int java_lang_Throwable::cause_offset; |
| int java_lang_Throwable::stackTrace_offset; |
| int java_lang_Throwable::static_unassigned_stacktrace_offset; |
| int java_lang_reflect_AccessibleObject::override_offset; |
| 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; |
| int java_lang_reflect_Method::type_annotations_offset; |
| 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; |
| int java_lang_reflect_Constructor::type_annotations_offset; |
| 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::signature_offset; |
| int java_lang_reflect_Field::annotations_offset; |
| int java_lang_reflect_Field::type_annotations_offset; |
| 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; |
| int java_lang_boxing_object::value_offset; |
| int java_lang_boxing_object::long_value_offset; |
| 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; |
| int java_lang_ref_Reference::static_lock_offset; |
| int java_lang_ref_Reference::static_pending_offset; |
| int java_lang_ref_Reference::number_of_fake_oop_fields; |
| int java_lang_ref_SoftReference::timestamp_offset; |
| int java_lang_ref_SoftReference::static_clock_offset; |
| int java_lang_ClassLoader::parent_offset; |
| 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; |
| int java_lang_StackTraceElement::declaringClass_offset; |
| int java_lang_StackTraceElement::methodName_offset; |
| int java_lang_StackTraceElement::fileName_offset; |
| int java_lang_StackTraceElement::lineNumber_offset; |
| 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; |
| int java_nio_Buffer::_limit_offset; |
| int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; |
| int sun_reflect_ConstantPool::_oop_offset; |
| int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; |
| |
| |
| // Support for java_lang_StackTraceElement |
| |
| 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); |
| } |
| |
| |
| // Support for java Assertions - java_lang_AssertionStatusDirectives. |
| |
| 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() { |
| return _limit_offset; |
| } |
| |
| |
| void java_nio_Buffer::compute_offsets() { |
| Klass* k = SystemDictionary::nio_Buffer_klass(); |
| assert(k != NULL, "must be loaded in 1.4+"); |
| compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); |
| } |
| |
| void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { |
| if (_owner_offset != 0) return; |
| |
| assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); |
| SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); |
| Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass(); |
| compute_offset(_owner_offset, k, |
| vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); |
| } |
| |
| oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { |
| assert(_owner_offset != 0, "Must be initialized"); |
| return obj->obj_field(_owner_offset); |
| } |
| |
| // Compute hard-coded offsets |
| // Invoked before SystemDictionary::initialize, so pre-loaded classes |
| // are not available to determine the offset_of_static_fields. |
| void JavaClasses::compute_hard_coded_offsets() { |
| const int x = heapOopSize; |
| const int header = instanceOopDesc::base_offset_in_bytes(); |
| |
| // Throwable Class |
| java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; |
| java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; |
| java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; |
| java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; |
| java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x; |
| |
| // java_lang_boxing_object |
| java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header; |
| java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong); |
| |
| // java_lang_ref_Reference: |
| java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; |
| java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; |
| java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; |
| java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; |
| java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; |
| java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; |
| // Artificial fields for java_lang_ref_Reference |
| // The first field is for the discovered field added in 1.4 |
| java_lang_ref_Reference::number_of_fake_oop_fields = 1; |
| |
| // java_lang_ref_SoftReference Class |
| java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong); |
| // Don't multiply static fields because they are always in wordSize units |
| java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; |
| |
| // java_lang_ClassLoader |
| java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; |
| |
| // java_lang_System |
| java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; |
| java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; |
| java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; |
| java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x; |
| |
| // java_lang_StackTraceElement |
| java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; |
| java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; |
| java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; |
| java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; |
| java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; |
| java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; |
| java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; |
| java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; |
| java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; |
| |
| } |
| |
| |
| // Compute non-hard-coded field offsets of all the classes in this file |
| void JavaClasses::compute_offsets() { |
| // java_lang_Class::compute_offsets was called earlier in bootstrap |
| java_lang_ClassLoader::compute_offsets(); |
| java_lang_Thread::compute_offsets(); |
| java_lang_ThreadGroup::compute_offsets(); |
| if (EnableInvokeDynamic) { |
| java_lang_invoke_MethodHandle::compute_offsets(); |
| java_lang_invoke_DirectMethodHandle::compute_offsets(); |
| java_lang_invoke_MemberName::compute_offsets(); |
| java_lang_invoke_LambdaForm::compute_offsets(); |
| java_lang_invoke_MethodType::compute_offsets(); |
| java_lang_invoke_CallSite::compute_offsets(); |
| } |
| java_security_AccessControlContext::compute_offsets(); |
| // Initialize reflection classes. The layouts of these classes |
| // changed with the new reflection implementation in JDK 1.4, and |
| // since the Universe doesn't know what JDK version it is until this |
| // point we defer computation of these offsets until now. |
| java_lang_reflect_AccessibleObject::compute_offsets(); |
| java_lang_reflect_Method::compute_offsets(); |
| java_lang_reflect_Constructor::compute_offsets(); |
| java_lang_reflect_Field::compute_offsets(); |
| if (JDK_Version::is_gte_jdk14x_version()) { |
| java_nio_Buffer::compute_offsets(); |
| } |
| if (JDK_Version::is_gte_jdk15x_version()) { |
| sun_reflect_ConstantPool::compute_offsets(); |
| sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); |
| } |
| if (JDK_Version::is_jdk18x_version()) |
| java_lang_reflect_Parameter::compute_offsets(); |
| |
| // generated interpreter code wants to know about the offsets we just computed: |
| AbstractAssembler::update_delayed_values(); |
| } |
| |
| #ifndef PRODUCT |
| |
| // These functions exist to assert the validity of hard-coded field offsets to guard |
| // against changes in the class files |
| |
| bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); |
| Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); |
| TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); |
| if (!h_klass->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() == hardcoded_offset ) { |
| return true; |
| } else { |
| tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", |
| klass_name, field_name, hardcoded_offset, fd.offset()); |
| return false; |
| } |
| } |
| |
| |
| bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); |
| Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); |
| TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); |
| if (!h_klass->find_local_field(f_name, f_sig, &fd)) { |
| tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (!fd.is_static()) { |
| tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); |
| return false; |
| } |
| if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) { |
| return true; |
| } else { |
| tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - InstanceMirrorKlass::offset_of_static_fields()); |
| return false; |
| } |
| } |
| |
| |
| bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) { |
| EXCEPTION_MARK; |
| fieldDescriptor fd; |
| TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); |
| Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); |
| instanceKlassHandle h_klass (THREAD, k); |
| TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); |
| TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); |
| if (!h_klass->find_local_field(f_name, f_sig, &fd)) { |
| tty->print_cr("Static field %s.%s not found", klass_name, field_name); |
| return false; |
| } |
| if (!fd.is_static() || !fd.has_initial_value()) { |
| tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name); |
| return false; |
| } |
| if (!fd.initial_value_tag().is_int()) { |
| tty->print_cr("Static field %s.%s is not an int", klass_name, field_name); |
| return false; |
| } |
| jint field_value = fd.int_initial_value(); |
| if (field_value == hardcoded_constant) { |
| return true; |
| } else { |
| tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value); |
| return false; |
| } |
| } |
| |
| |
| // Check the hard-coded field offsets of all the classes in this file |
| |
| void JavaClasses::check_offsets() { |
| bool valid = true; |
| HandleMark hm; |
| |
| #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) |
| |
| #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) |
| |
| #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \ |
| valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig) |
| |
| // java.lang.String |
| |
| CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); |
| if (java_lang_String::has_offset_field()) { |
| CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); |
| CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); |
| } |
| if (java_lang_String::has_hash_field()) { |
| CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); |
| } |
| |
| // java.lang.Class |
| |
| // Fake fields |
| // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked |
| // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked |
| |
| // java.lang.Throwable |
| |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); |
| CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); |
| |
| // 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"); |
| |
| // java.lang.ClassLoader |
| |
| CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); |
| |
| // java.lang.System |
| |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); |
| CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;"); |
| |
| // java.lang.StackTraceElement |
| |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); |
| CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); |
| |
| // java.lang.ref.Reference |
| |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); |
| CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); |
| // Fake field |
| //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); |
| CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); |
| CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); |
| |
| // java.lang.ref.SoftReference |
| |
| CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); |
| CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); |
| |
| // java.lang.AssertionStatusDirectives |
| // |
| // The CheckAssertionStatusDirectives boolean can be removed from here and |
| // globals.hpp after the AssertionStatusDirectives class has been integrated |
| // into merlin "for some time." Without it, the vm will fail with early |
| // merlin builds. |
| |
| if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { |
| const char* nm = "java/lang/AssertionStatusDirectives"; |
| const char* sig = "[Ljava/lang/String;"; |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); |
| CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); |
| } |
| |
| if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); |
| } |
| |
| #endif // PRODUCT |
| |
| int InjectedField::compute_offset() { |
| Klass* klass_oop = klass(); |
| for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !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", InstanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : ""); |
| #ifndef PRODUCT |
| klass_oop->print(); |
| tty->print_cr("all fields:"); |
| for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !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 preloaded class: use -XX:+TraceClassLoading 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. |
| } |