| /* |
| * Copyright (c) 2012, 2015, 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 "asm/codeBuffer.hpp" |
| #include "code/codeCache.hpp" |
| #include "compiler/compileBroker.hpp" |
| #include "compiler/disassembler.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #include "jvmci/jvmciCompilerToVM.hpp" |
| #include "jvmci/jvmciCompiler.hpp" |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #include "jvmci/jvmciEnv.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/objArrayOop.inline.hpp" |
| #include "prims/jvm.h" |
| #include "runtime/biasedLocking.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/reflection.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "utilities/debug.hpp" |
| #include "utilities/defaultStream.hpp" |
| |
| #if defined(_MSC_VER) |
| #define strtoll _strtoi64 |
| #endif |
| |
| jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL; |
| bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false; |
| bool JVMCIRuntime::_well_known_classes_initialized = false; |
| const char* JVMCIRuntime::_compiler = NULL; |
| int JVMCIRuntime::_options_count = 0; |
| SystemProperty** JVMCIRuntime::_options = NULL; |
| bool JVMCIRuntime::_shutdown_called = false; |
| |
| static const char* OPTION_PREFIX = "jvmci.option."; |
| static const size_t OPTION_PREFIX_LEN = strlen(OPTION_PREFIX); |
| |
| BasicType JVMCIRuntime::kindToBasicType(jchar ch) { |
| switch(ch) { |
| case 'z': return T_BOOLEAN; |
| case 'b': return T_BYTE; |
| case 's': return T_SHORT; |
| case 'c': return T_CHAR; |
| case 'i': return T_INT; |
| case 'f': return T_FLOAT; |
| case 'j': return T_LONG; |
| case 'd': return T_DOUBLE; |
| case 'a': return T_OBJECT; |
| case '-': return T_ILLEGAL; |
| default: |
| fatal("unexpected Kind: %c", ch); |
| break; |
| } |
| return T_ILLEGAL; |
| } |
| |
| // Simple helper to see if the caller of a runtime stub which |
| // entered the VM has been deoptimized |
| |
| static bool caller_is_deopted() { |
| JavaThread* thread = JavaThread::current(); |
| RegisterMap reg_map(thread, false); |
| frame runtime_frame = thread->last_frame(); |
| frame caller_frame = runtime_frame.sender(®_map); |
| assert(caller_frame.is_compiled_frame(), "must be compiled"); |
| return caller_frame.is_deoptimized_frame(); |
| } |
| |
| // Stress deoptimization |
| static void deopt_caller() { |
| if ( !caller_is_deopted()) { |
| JavaThread* thread = JavaThread::current(); |
| RegisterMap reg_map(thread, false); |
| frame runtime_frame = thread->last_frame(); |
| frame caller_frame = runtime_frame.sender(®_map); |
| Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
| assert(caller_is_deopted(), "Must be deoptimized"); |
| } |
| } |
| |
| JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass)) |
| JRT_BLOCK; |
| assert(klass->is_klass(), "not a class"); |
| instanceKlassHandle h(thread, klass); |
| h->check_valid_for_instantiation(true, CHECK); |
| // make sure klass is initialized |
| h->initialize(CHECK); |
| // allocate instance and return via TLS |
| oop obj = h->allocate_instance(CHECK); |
| thread->set_vm_result(obj); |
| JRT_BLOCK_END; |
| |
| if (ReduceInitialCardMarks) { |
| new_store_pre_barrier(thread); |
| } |
| JRT_END |
| |
| JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length)) |
| JRT_BLOCK; |
| // Note: no handle for klass needed since they are not used |
| // anymore after new_objArray() and no GC can happen before. |
| // (This may have to change if this code changes!) |
| assert(array_klass->is_klass(), "not a class"); |
| oop obj; |
| if (array_klass->oop_is_typeArray()) { |
| BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); |
| obj = oopFactory::new_typeArray(elt_type, length, CHECK); |
| } else { |
| Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass(); |
| obj = oopFactory::new_objArray(elem_klass, length, CHECK); |
| } |
| thread->set_vm_result(obj); |
| // This is pretty rare but this runtime patch is stressful to deoptimization |
| // if we deoptimize here so force a deopt to stress the path. |
| if (DeoptimizeALot) { |
| static int deopts = 0; |
| // Alternate between deoptimizing and raising an error (which will also cause a deopt) |
| if (deopts++ % 2 == 0) { |
| ResourceMark rm(THREAD); |
| THROW(vmSymbols::java_lang_OutOfMemoryError()); |
| } else { |
| deopt_caller(); |
| } |
| } |
| JRT_BLOCK_END; |
| |
| if (ReduceInitialCardMarks) { |
| new_store_pre_barrier(thread); |
| } |
| JRT_END |
| |
| void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) { |
| // After any safepoint, just before going back to compiled code, |
| // we inform the GC that we will be doing initializing writes to |
| // this object in the future without emitting card-marks, so |
| // GC may take any compensating steps. |
| // NOTE: Keep this code consistent with GraphKit::store_barrier. |
| |
| oop new_obj = thread->vm_result(); |
| if (new_obj == NULL) return; |
| |
| assert(Universe::heap()->can_elide_tlab_store_barriers(), |
| "compiler must check this first"); |
| // GC may decide to give back a safer copy of new_obj. |
| new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); |
| thread->set_vm_result(new_obj); |
| } |
| |
| JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims)) |
| assert(klass->is_klass(), "not a class"); |
| assert(rank >= 1, "rank must be nonzero"); |
| oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); |
| thread->set_vm_result(obj); |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length)) |
| oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK); |
| thread->set_vm_result(obj); |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror)) |
| instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror)); |
| |
| if (klass == NULL) { |
| ResourceMark rm(THREAD); |
| THROW(vmSymbols::java_lang_InstantiationException()); |
| } |
| |
| // Create new instance (the receiver) |
| klass->check_valid_for_instantiation(false, CHECK); |
| |
| // Make sure klass gets initialized |
| klass->initialize(CHECK); |
| |
| oop obj = klass->allocate_instance(CHECK); |
| thread->set_vm_result(obj); |
| JRT_END |
| |
| extern void vm_exit(int code); |
| |
| // Enter this method from compiled code handler below. This is where we transition |
| // to VM mode. This is done as a helper routine so that the method called directly |
| // from compiled code does not have to transition to VM. This allows the entry |
| // method to see if the nmethod that we have just looked up a handler for has |
| // been deoptimized while we were in the vm. This simplifies the assembly code |
| // cpu directories. |
| // |
| // We are entering here from exception stub (via the entry method below) |
| // If there is a compiled exception handler in this method, we will continue there; |
| // otherwise we will unwind the stack and continue at the caller of top frame method |
| // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to |
| // control the area where we can allow a safepoint. After we exit the safepoint area we can |
| // check to see if the handler we are going to return is now in a nmethod that has |
| // been deoptimized. If that is the case we return the deopt blob |
| // unpack_with_exception entry instead. This makes life for the exception blob easier |
| // because making that same check and diverting is painful from assembly language. |
| JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm)) |
| // Reset method handle flag. |
| thread->set_is_method_handle_return(false); |
| |
| Handle exception(thread, ex); |
| nm = CodeCache::find_nmethod(pc); |
| assert(nm != NULL, "this is not a compiled method"); |
| // Adjust the pc as needed/ |
| if (nm->is_deopt_pc(pc)) { |
| RegisterMap map(thread, false); |
| frame exception_frame = thread->last_frame().sender(&map); |
| // if the frame isn't deopted then pc must not correspond to the caller of last_frame |
| assert(exception_frame.is_deoptimized_frame(), "must be deopted"); |
| pc = exception_frame.pc(); |
| } |
| #ifdef ASSERT |
| assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); |
| assert(exception->is_oop(), "just checking"); |
| // Check that exception is a subclass of Throwable, otherwise we have a VerifyError |
| if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { |
| if (ExitVMOnVerifyError) vm_exit(-1); |
| ShouldNotReachHere(); |
| } |
| #endif |
| |
| // Check the stack guard pages and reenable them if necessary and there is |
| // enough space on the stack to do so. Use fast exceptions only if the guard |
| // pages are enabled. |
| bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); |
| if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); |
| |
| if (JvmtiExport::can_post_on_exceptions()) { |
| // To ensure correct notification of exception catches and throws |
| // we have to deoptimize here. If we attempted to notify the |
| // catches and throws during this exception lookup it's possible |
| // we could deoptimize on the way out of the VM and end back in |
| // the interpreter at the throw site. This would result in double |
| // notifications since the interpreter would also notify about |
| // these same catches and throws as it unwound the frame. |
| |
| RegisterMap reg_map(thread); |
| frame stub_frame = thread->last_frame(); |
| frame caller_frame = stub_frame.sender(®_map); |
| |
| // We don't really want to deoptimize the nmethod itself since we |
| // can actually continue in the exception handler ourselves but I |
| // don't see an easy way to have the desired effect. |
| Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); |
| assert(caller_is_deopted(), "Must be deoptimized"); |
| |
| return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
| } |
| |
| // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions |
| if (guard_pages_enabled) { |
| address fast_continuation = nm->handler_for_exception_and_pc(exception, pc); |
| if (fast_continuation != NULL) { |
| // Set flag if return address is a method handle call site. |
| thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
| return fast_continuation; |
| } |
| } |
| |
| // If the stack guard pages are enabled, check whether there is a handler in |
| // the current method. Otherwise (guard pages disabled), force an unwind and |
| // skip the exception cache update (i.e., just leave continuation==NULL). |
| address continuation = NULL; |
| if (guard_pages_enabled) { |
| |
| // New exception handling mechanism can support inlined methods |
| // with exception handlers since the mappings are from PC to PC |
| |
| // debugging support |
| // tracing |
| if (TraceExceptions) { |
| ttyLocker ttyl; |
| ResourceMark rm; |
| tty->print_cr("Exception <%s> (" INTPTR_FORMAT ") thrown in compiled method <%s> at PC " INTPTR_FORMAT " for thread " INTPTR_FORMAT "", |
| exception->print_value_string(), p2i((address)exception()), nm->method()->print_value_string(), p2i(pc), p2i(thread)); |
| } |
| // for AbortVMOnException flag |
| NOT_PRODUCT(Exceptions::debug_check_abort(exception)); |
| |
| // Clear out the exception oop and pc since looking up an |
| // exception handler can cause class loading, which might throw an |
| // exception and those fields are expected to be clear during |
| // normal bytecode execution. |
| thread->clear_exception_oop_and_pc(); |
| |
| continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false); |
| // If an exception was thrown during exception dispatch, the exception oop may have changed |
| thread->set_exception_oop(exception()); |
| thread->set_exception_pc(pc); |
| |
| // the exception cache is used only by non-implicit exceptions |
| if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { |
| nm->add_handler_for_exception_and_pc(exception, pc, continuation); |
| } |
| } |
| |
| // Set flag if return address is a method handle call site. |
| thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); |
| |
| if (TraceExceptions) { |
| ttyLocker ttyl; |
| ResourceMark rm; |
| tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT, |
| p2i(thread), p2i(continuation), p2i(pc)); |
| } |
| |
| return continuation; |
| JRT_END |
| |
| // Enter this method from compiled code only if there is a Java exception handler |
| // in the method handling the exception. |
| // We are entering here from exception stub. We don't do a normal VM transition here. |
| // We do it in a helper. This is so we can check to see if the nmethod we have just |
| // searched for an exception handler has been deoptimized in the meantime. |
| address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) { |
| oop exception = thread->exception_oop(); |
| address pc = thread->exception_pc(); |
| // Still in Java mode |
| DEBUG_ONLY(ResetNoHandleMark rnhm); |
| nmethod* nm = NULL; |
| address continuation = NULL; |
| { |
| // Enter VM mode by calling the helper |
| ResetNoHandleMark rnhm; |
| continuation = exception_handler_for_pc_helper(thread, exception, pc, nm); |
| } |
| // Back in JAVA, use no oops DON'T safepoint |
| |
| // Now check to see if the compiled method we were called from is now deoptimized. |
| // If so we must return to the deopt blob and deoptimize the nmethod |
| if (nm != NULL && caller_is_deopted()) { |
| continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
| } |
| |
| assert(continuation != NULL, "no handler found"); |
| return continuation; |
| } |
| |
| JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread)) |
| SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); |
| thread->set_vm_result(PENDING_EXCEPTION); |
| CLEAR_PENDING_EXCEPTION; |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index)) |
| char message[jintAsStringSize]; |
| sprintf(message, "%d", index); |
| SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message); |
| thread->set_vm_result(PENDING_EXCEPTION); |
| CLEAR_PENDING_EXCEPTION; |
| JRT_END |
| |
| JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) |
| IF_TRACE_jvmci_3 { |
| char type[O_BUFLEN]; |
| obj->klass()->name()->as_C_string(type, O_BUFLEN); |
| markOop mark = obj->mark(); |
| TRACE_jvmci_3("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock)); |
| tty->flush(); |
| } |
| #ifdef ASSERT |
| if (PrintBiasedLockingStatistics) { |
| Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); |
| } |
| #endif |
| Handle h_obj(thread, obj); |
| assert(h_obj()->is_oop(), "must be NULL or an object"); |
| if (UseBiasedLocking) { |
| // Retry fast entry if bias is revoked to avoid unnecessary inflation |
| ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); |
| } else { |
| if (JVMCIUseFastLocking) { |
| // When using fast locking, the compiled code has already tried the fast case |
| ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); |
| } else { |
| ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); |
| } |
| } |
| TRACE_jvmci_3("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj)); |
| JRT_END |
| |
| JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) |
| assert(thread == JavaThread::current(), "threads must correspond"); |
| assert(thread->last_Java_sp(), "last_Java_sp must be set"); |
| // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown |
| EXCEPTION_MARK; |
| |
| #ifdef DEBUG |
| if (!obj->is_oop()) { |
| ResetNoHandleMark rhm; |
| nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); |
| if (method != NULL) { |
| tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj)); |
| } |
| thread->print_stack_on(tty); |
| assert(false, "invalid lock object pointer dected"); |
| } |
| #endif |
| |
| if (JVMCIUseFastLocking) { |
| // When using fast locking, the compiled code has already tried the fast case |
| ObjectSynchronizer::slow_exit(obj, lock, THREAD); |
| } else { |
| ObjectSynchronizer::fast_exit(obj, lock, THREAD); |
| } |
| IF_TRACE_jvmci_3 { |
| char type[O_BUFLEN]; |
| obj->klass()->name()->as_C_string(type, O_BUFLEN); |
| TRACE_jvmci_3("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock)); |
| tty->flush(); |
| } |
| JRT_END |
| |
| JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, jint flags)) |
| bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING); |
| bool addr = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS); |
| bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE); |
| if (!string) { |
| if (!addr && obj->is_oop_or_null(true)) { |
| char buf[O_BUFLEN]; |
| tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj)); |
| } else { |
| tty->print(INTPTR_FORMAT, p2i(obj)); |
| } |
| } else { |
| ResourceMark rm; |
| assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); |
| char *buf = java_lang_String::as_utf8_string(obj); |
| tty->print_raw(buf); |
| } |
| if (newline) { |
| tty->cr(); |
| } |
| JRT_END |
| |
| JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj)) |
| thread->satb_mark_queue().enqueue(obj); |
| JRT_END |
| |
| JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr)) |
| thread->dirty_card_queue().enqueue(card_addr); |
| JRT_END |
| |
| JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child)) |
| bool ret = true; |
| if(!Universe::heap()->is_in_closed_subset(parent)) { |
| tty->print_cr("Parent Object " INTPTR_FORMAT " not in heap", p2i(parent)); |
| parent->print(); |
| ret=false; |
| } |
| if(!Universe::heap()->is_in_closed_subset(child)) { |
| tty->print_cr("Child Object " INTPTR_FORMAT " not in heap", p2i(child)); |
| child->print(); |
| ret=false; |
| } |
| return (jint)ret; |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value)) |
| ResourceMark rm; |
| const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where; |
| char *detail_msg = NULL; |
| if (format != 0L) { |
| const char* buf = (char*) (address) format; |
| size_t detail_msg_length = strlen(buf) * 2; |
| detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); |
| jio_snprintf(detail_msg, detail_msg_length, buf, value); |
| report_vm_error(__FILE__, __LINE__, error_msg, "%s", detail_msg); |
| } else { |
| report_vm_error(__FILE__, __LINE__, error_msg); |
| } |
| JRT_END |
| |
| JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread)) |
| oop exception = thread->exception_oop(); |
| assert(exception != NULL, "npe"); |
| thread->set_exception_oop(NULL); |
| thread->set_exception_pc(0); |
| return exception; |
| JRT_END |
| |
| PRAGMA_DIAG_PUSH |
| PRAGMA_FORMAT_NONLITERAL_IGNORED |
| JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3)) |
| ResourceMark rm; |
| assert(format != NULL && java_lang_String::is_instance(format), "must be"); |
| char *buf = java_lang_String::as_utf8_string(format); |
| tty->print((const char*)buf, v1, v2, v3); |
| JRT_END |
| PRAGMA_DIAG_POP |
| |
| static void decipher(jlong v, bool ignoreZero) { |
| if (v != 0 || !ignoreZero) { |
| void* p = (void *)(address) v; |
| CodeBlob* cb = CodeCache::find_blob(p); |
| if (cb) { |
| if (cb->is_nmethod()) { |
| char buf[O_BUFLEN]; |
| tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin())); |
| return; |
| } |
| cb->print_value_on(tty); |
| return; |
| } |
| if (Universe::heap()->is_in(p)) { |
| oop obj = oop(p); |
| obj->print_value_on(tty); |
| return; |
| } |
| tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v); |
| } |
| } |
| |
| PRAGMA_DIAG_PUSH |
| PRAGMA_FORMAT_NONLITERAL_IGNORED |
| JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3)) |
| ResourceMark rm; |
| const char *buf = (const char*) (address) format; |
| if (vmError) { |
| if (buf != NULL) { |
| fatal(buf, v1, v2, v3); |
| } else { |
| fatal("<anonymous error>"); |
| } |
| } else if (buf != NULL) { |
| tty->print(buf, v1, v2, v3); |
| } else { |
| assert(v2 == 0, "v2 != 0"); |
| assert(v3 == 0, "v3 != 0"); |
| decipher(v1, false); |
| } |
| JRT_END |
| PRAGMA_DIAG_POP |
| |
| JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) |
| union { |
| jlong l; |
| jdouble d; |
| jfloat f; |
| } uu; |
| uu.l = value; |
| switch (typeChar) { |
| case 'z': tty->print(value == 0 ? "false" : "true"); break; |
| case 'b': tty->print("%d", (jbyte) value); break; |
| case 'c': tty->print("%c", (jchar) value); break; |
| case 's': tty->print("%d", (jshort) value); break; |
| case 'i': tty->print("%d", (jint) value); break; |
| case 'f': tty->print("%f", uu.f); break; |
| case 'j': tty->print(JLONG_FORMAT, value); break; |
| case 'd': tty->print("%lf", uu.d); break; |
| default: assert(false, "unknown typeChar"); break; |
| } |
| if (newline) { |
| tty->cr(); |
| } |
| JRT_END |
| |
| JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj)) |
| return (jint) obj->identity_hash(); |
| JRT_END |
| |
| JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted)) |
| // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. |
| // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF. |
| Handle receiverHandle(thread, receiver); |
| MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock); |
| JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle()); |
| if (receiverThread == NULL) { |
| // The other thread may exit during this process, which is ok so return false. |
| return JNI_FALSE; |
| } else { |
| return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0); |
| } |
| JRT_END |
| |
| JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value)) |
| deopt_caller(); |
| return value; |
| JRT_END |
| |
| // private static JVMCIRuntime JVMCI.initializeRuntime() |
| JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c)) |
| if (!EnableJVMCI) { |
| THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled") |
| } |
| JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL); |
| jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL); |
| return ret; |
| JVM_END |
| |
| Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) { |
| guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime"); |
| |
| TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle())); |
| KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle())); |
| TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle())); |
| TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle())); |
| JavaValue result(T_OBJECT); |
| if (args == NULL) { |
| JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle())); |
| } else { |
| JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle())); |
| } |
| return Handle((oop)result.get_jobject()); |
| } |
| |
| static bool jvmci_options_file_exists() { |
| const char* home = Arguments::get_java_home(); |
| size_t path_len = strlen(home) + strlen("/lib/jvmci/options") + 1; |
| char path[JVM_MAXPATHLEN]; |
| char sep = os::file_separator()[0]; |
| jio_snprintf(path, JVM_MAXPATHLEN, "%s%clib%cjvmci%coptions", home, sep, sep, sep); |
| struct stat st; |
| return os::stat(path, &st) == 0; |
| } |
| |
| void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) { |
| if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { |
| #ifdef ASSERT |
| // This should only be called in the context of the JVMCI class being initialized |
| TempNewSymbol name = SymbolTable::new_symbol("jdk/vm/ci/runtime/JVMCI", CHECK); |
| Klass* k = SystemDictionary::resolve_or_null(name, CHECK); |
| instanceKlassHandle klass = InstanceKlass::cast(k); |
| assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD), |
| "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization"); |
| #endif |
| |
| bool parseOptionsFile = jvmci_options_file_exists(); |
| if (_options != NULL || parseOptionsFile) { |
| JavaCallArguments args; |
| objArrayOop options; |
| if (_options != NULL) { |
| options = oopFactory::new_objArray(SystemDictionary::String_klass(), _options_count * 2, CHECK); |
| for (int i = 0; i < _options_count; i++) { |
| SystemProperty* prop = _options[i]; |
| oop name = java_lang_String::create_oop_from_str(prop->key() + OPTION_PREFIX_LEN, CHECK); |
| oop value = java_lang_String::create_oop_from_str(prop->value(), CHECK); |
| options->obj_at_put(i * 2, name); |
| options->obj_at_put((i * 2) + 1, value); |
| } |
| } else { |
| options = NULL; |
| } |
| args.push_oop(options); |
| args.push_int(parseOptionsFile); |
| callStatic("jdk/vm/ci/options/OptionsParser", |
| "parseOptionsFromVM", |
| "([Ljava/lang/String;Z)Ljava/lang/Boolean;", &args, CHECK); |
| } |
| |
| if (_compiler != NULL) { |
| JavaCallArguments args; |
| oop compiler = java_lang_String::create_oop_from_str(_compiler, CHECK); |
| args.push_oop(compiler); |
| callStatic("jdk/vm/ci/hotspot/HotSpotJVMCICompilerConfig", |
| "selectCompiler", |
| "(Ljava/lang/String;)Ljava/lang/Boolean;", &args, CHECK); |
| } |
| |
| Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime", |
| "runtime", |
| "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK); |
| _HotSpotJVMCIRuntime_initialized = true; |
| _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result()); |
| } |
| } |
| |
| void JVMCIRuntime::initialize_JVMCI(TRAPS) { |
| if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { |
| callStatic("jdk/vm/ci/runtime/JVMCI", |
| "getRuntime", |
| "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK); |
| } |
| assert(_HotSpotJVMCIRuntime_initialized == true, "what?"); |
| } |
| |
| void JVMCIRuntime::initialize_well_known_classes(TRAPS) { |
| if (JVMCIRuntime::_well_known_classes_initialized == false) { |
| SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID; |
| SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK); |
| JVMCIJavaClasses::compute_offsets(); |
| JVMCIRuntime::_well_known_classes_initialized = true; |
| } |
| } |
| |
| void JVMCIRuntime::metadata_do(void f(Metadata*)) { |
| // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in |
| // the SystemDictionary well known classes should ensure the other |
| // classes have already been loaded, so make sure their order in the |
| // table enforces that. |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| |
| if (HotSpotJVMCIMetaAccessContext::klass() == NULL || |
| !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) { |
| // Nothing could be registered yet |
| return; |
| } |
| |
| // WeakReference<HotSpotJVMCIMetaAccessContext>[] |
| objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts(); |
| if (allContexts == NULL) { |
| return; |
| } |
| |
| // These must be loaded at this point but the linking state doesn't matter. |
| assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded"); |
| assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded"); |
| assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded"); |
| |
| for (int i = 0; i < allContexts->length(); i++) { |
| oop ref = allContexts->obj_at(i); |
| if (ref != NULL) { |
| oop referent = java_lang_ref_Reference::referent(ref); |
| if (referent != NULL) { |
| // Chunked Object[] with last element pointing to next chunk |
| objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent); |
| while (metadataRoots != NULL) { |
| for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) { |
| oop reference = metadataRoots->obj_at(typeIndex); |
| if (reference == NULL) { |
| continue; |
| } |
| oop metadataRoot = java_lang_ref_Reference::referent(reference); |
| if (metadataRoot == NULL) { |
| continue; |
| } |
| if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) { |
| Method* method = CompilerToVM::asMethod(metadataRoot); |
| f(method); |
| } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) { |
| ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot); |
| f(constantPool); |
| } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) { |
| Klass* klass = CompilerToVM::asKlass(metadataRoot); |
| f(klass); |
| } else { |
| metadataRoot->print(); |
| ShouldNotReachHere(); |
| } |
| } |
| metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1); |
| assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type"); |
| } |
| } |
| } |
| } |
| } |
| |
| // private static void CompilerToVM.registerNatives() |
| JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass)) |
| if (!EnableJVMCI) { |
| THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled"); |
| } |
| |
| #ifdef _LP64 |
| #ifndef TARGET_ARCH_sparc |
| uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end(); |
| uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024; |
| guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)"); |
| #endif // TARGET_ARCH_sparc |
| #else |
| fatal("check TLAB allocation code for address space conflicts"); |
| #endif |
| |
| JVMCIRuntime::initialize_well_known_classes(CHECK); |
| |
| { |
| ThreadToNativeFromVM trans(thread); |
| |
| // Ensure _non_oop_bits is initialized |
| Universe::non_oop_word(); |
| |
| env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count()); |
| } |
| JVM_END |
| |
| /** |
| * Closure for parsing a line from a *.properties file in jre/lib/jvmci/properties. |
| * The line must match the regular expression "[^=]+=.*". That is one or more |
| * characters other than '=' followed by '=' followed by zero or more characters. |
| * Everything before the '=' is the property name and everything after '=' is the value. |
| * Lines that start with '#' are treated as comments and ignored. |
| * No special processing of whitespace or any escape characters is performed. |
| * The last definition of a property "wins" (i.e., it overrides all earlier |
| * definitions of the property). |
| */ |
| class JVMCIPropertiesFileClosure : public ParseClosure { |
| SystemProperty** _plist; |
| public: |
| JVMCIPropertiesFileClosure(SystemProperty** plist) : _plist(plist) {} |
| void do_line(char* line) { |
| if (line[0] == '#') { |
| // skip comment |
| return; |
| } |
| size_t len = strlen(line); |
| char* sep = strchr(line, '='); |
| if (sep == NULL) { |
| warn_and_abort("invalid format: could not find '=' character"); |
| return; |
| } |
| if (sep == line) { |
| warn_and_abort("invalid format: name cannot be empty"); |
| return; |
| } |
| *sep = '\0'; |
| const char* name = line; |
| char* value = sep + 1; |
| Arguments::PropertyList_unique_add(_plist, name, value); |
| } |
| }; |
| |
| void JVMCIRuntime::init_system_properties(SystemProperty** plist) { |
| char jvmciDir[JVM_MAXPATHLEN]; |
| const char* fileSep = os::file_separator(); |
| jio_snprintf(jvmciDir, sizeof(jvmciDir), "%s%slib%sjvmci", |
| Arguments::get_java_home(), fileSep, fileSep, fileSep); |
| DIR* dir = os::opendir(jvmciDir); |
| if (dir != NULL) { |
| struct dirent *entry; |
| char *dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(jvmciDir), mtInternal); |
| JVMCIPropertiesFileClosure closure(plist); |
| const unsigned suffix_len = (unsigned)strlen(".properties"); |
| while ((entry = os::readdir(dir, (dirent *) dbuf)) != NULL && !closure.is_aborted()) { |
| const char* name = entry->d_name; |
| if (strlen(name) > suffix_len && strcmp(name + strlen(name) - suffix_len, ".properties") == 0) { |
| char propertiesFilePath[JVM_MAXPATHLEN]; |
| jio_snprintf(propertiesFilePath, sizeof(propertiesFilePath), "%s%s%s",jvmciDir, fileSep, name); |
| JVMCIRuntime::parse_lines(propertiesFilePath, &closure, false); |
| } |
| } |
| FREE_C_HEAP_ARRAY(char, dbuf); |
| os::closedir(dir); |
| } |
| } |
| |
| #define CHECK_WARN_ABORT_(message) THREAD); \ |
| if (HAS_PENDING_EXCEPTION) { \ |
| warning(message); \ |
| char buf[512]; \ |
| jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ |
| JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ |
| return; \ |
| } \ |
| (void)(0 |
| |
| void JVMCIRuntime::save_compiler(const char* compiler) { |
| assert(compiler != NULL, "npe"); |
| assert(_compiler == NULL, "cannot reassign JVMCI compiler"); |
| _compiler = compiler; |
| } |
| |
| jint JVMCIRuntime::save_options(SystemProperty* props) { |
| int count = 0; |
| SystemProperty* first = NULL; |
| for (SystemProperty* p = props; p != NULL; p = p->next()) { |
| if (strncmp(p->key(), OPTION_PREFIX, OPTION_PREFIX_LEN) == 0) { |
| if (p->value() == NULL || strlen(p->value()) == 0) { |
| jio_fprintf(defaultStream::output_stream(), "JVMCI option %s must have non-zero length value\n", p->key()); |
| return JNI_ERR; |
| } |
| if (first == NULL) { |
| first = p; |
| } |
| count++; |
| } |
| } |
| if (count != 0) { |
| _options_count = count; |
| _options = NEW_C_HEAP_ARRAY(SystemProperty*, count, mtCompiler); |
| _options[0] = first; |
| SystemProperty** insert_pos = _options + 1; |
| for (SystemProperty* p = first->next(); p != NULL; p = p->next()) { |
| if (strncmp(p->key(), OPTION_PREFIX, OPTION_PREFIX_LEN) == 0) { |
| *insert_pos = p; |
| insert_pos++; |
| } |
| } |
| assert (insert_pos - _options == count, "must be"); |
| } |
| return JNI_OK; |
| } |
| |
| void JVMCIRuntime::shutdown() { |
| if (_HotSpotJVMCIRuntime_instance != NULL) { |
| _shutdown_called = true; |
| JavaThread* THREAD = JavaThread::current(); |
| HandleMark hm(THREAD); |
| Handle receiver = get_HotSpotJVMCIRuntime(CHECK_ABORT); |
| JavaValue result(T_VOID); |
| JavaCallArguments args; |
| args.push_oop(receiver); |
| JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT); |
| } |
| } |
| |
| void JVMCIRuntime::call_printStackTrace(Handle exception, Thread* thread) { |
| assert(exception->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected"); |
| JavaValue result(T_VOID); |
| JavaCalls::call_virtual(&result, |
| exception, |
| KlassHandle(thread, |
| SystemDictionary::Throwable_klass()), |
| vmSymbols::printStackTrace_name(), |
| vmSymbols::void_method_signature(), |
| thread); |
| } |
| |
| void JVMCIRuntime::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) { |
| Thread* THREAD = Thread::current(); |
| CLEAR_PENDING_EXCEPTION; |
| tty->print_raw_cr(message); |
| call_printStackTrace(exception, THREAD); |
| |
| // Give other aborting threads to also print their stack traces. |
| // This can be very useful when debugging class initialization |
| // failures. |
| os::sleep(THREAD, 200, false); |
| |
| vm_abort(dump_core); |
| } |
| |
| void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) { |
| struct stat st; |
| if (os::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file |
| int file_handle = os::open(path, 0, 0); |
| if (file_handle != -1) { |
| char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal); |
| int num_read; |
| num_read = (int) os::read(file_handle, (char*) buffer, st.st_size); |
| if (num_read == -1) { |
| warning("Error reading file %s due to %s", path, strerror(errno)); |
| } else if (num_read != st.st_size) { |
| warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path); |
| } |
| os::close(file_handle); |
| closure->set_filename(path); |
| if (num_read == st.st_size) { |
| buffer[num_read] = '\0'; |
| |
| char* line = buffer; |
| while (line - buffer < num_read && !closure->is_aborted()) { |
| // find line end (\r, \n or \r\n) |
| char* nextline = NULL; |
| char* cr = strchr(line, '\r'); |
| char* lf = strchr(line, '\n'); |
| if (cr != NULL && lf != NULL) { |
| char* min = MIN2(cr, lf); |
| *min = '\0'; |
| if (lf == cr + 1) { |
| nextline = lf + 1; |
| } else { |
| nextline = min + 1; |
| } |
| } else if (cr != NULL) { |
| *cr = '\0'; |
| nextline = cr + 1; |
| } else if (lf != NULL) { |
| *lf = '\0'; |
| nextline = lf + 1; |
| } |
| // trim left |
| while (*line == ' ' || *line == '\t') line++; |
| char* end = line + strlen(line); |
| // trim right |
| while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--; |
| *end = '\0'; |
| // skip comments and empty lines |
| if (*line != '#' && strlen(line) > 0) { |
| closure->parse_line(line); |
| } |
| if (nextline != NULL) { |
| line = nextline; |
| } else { |
| // File without newline at the end |
| break; |
| } |
| } |
| } |
| FREE_C_HEAP_ARRAY(char, buffer); |
| } else { |
| warning("Error opening file %s due to %s", path, strerror(errno)); |
| } |
| } else if (warnStatFailure) { |
| warning("Could not stat file %s due to %s", path, strerror(errno)); |
| } |
| } |