author | stefank |
Tue, 23 Nov 2010 13:22:55 -0800 | |
changeset 7397 | 5b173b4ca846 |
parent 6453 | 970dc585ab63 |
child 7918 | ce1e4ae77aea |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "ci/ciConstant.hpp" |
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#include "ci/ciEnv.hpp" |
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#include "ci/ciField.hpp" |
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#include "ci/ciInstance.hpp" |
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#include "ci/ciInstanceKlass.hpp" |
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#include "ci/ciInstanceKlassKlass.hpp" |
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#include "ci/ciMethod.hpp" |
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#include "ci/ciNullObject.hpp" |
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#include "ci/ciObjArrayKlassKlass.hpp" |
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#include "ci/ciTypeArrayKlassKlass.hpp" |
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#include "ci/ciUtilities.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "code/scopeDesc.hpp" |
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#include "compiler/compileBroker.hpp" |
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#include "compiler/compileLog.hpp" |
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#include "compiler/compilerOracle.hpp" |
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#include "gc_interface/collectedHeap.inline.hpp" |
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#include "interpreter/linkResolver.hpp" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/oopFactory.hpp" |
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#include "memory/universe.inline.hpp" |
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#include "oops/methodDataOop.hpp" |
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#include "oops/objArrayKlass.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/oop.inline2.hpp" |
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#include "prims/jvmtiExport.hpp" |
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#include "runtime/init.hpp" |
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#include "runtime/reflection.hpp" |
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#include "runtime/sharedRuntime.hpp" |
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#include "utilities/dtrace.hpp" |
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#ifdef COMPILER1 |
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#include "c1/c1_Runtime1.hpp" |
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#endif |
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#ifdef COMPILER2 |
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#include "opto/runtime.hpp" |
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#endif |
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// ciEnv |
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// |
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// This class is the top level broker for requests from the compiler |
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// to the VM. |
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||
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ciObject* ciEnv::_null_object_instance; |
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ciMethodKlass* ciEnv::_method_klass_instance; |
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ciSymbolKlass* ciEnv::_symbol_klass_instance; |
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ciKlassKlass* ciEnv::_klass_klass_instance; |
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ciInstanceKlassKlass* ciEnv::_instance_klass_klass_instance; |
|
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ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance; |
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ciObjArrayKlassKlass* ciEnv::_obj_array_klass_klass_instance; |
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||
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#define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL; |
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WK_KLASSES_DO(WK_KLASS_DEFN) |
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#undef WK_KLASS_DEFN |
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|
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ciSymbol* ciEnv::_unloaded_cisymbol = NULL; |
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ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL; |
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ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL; |
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||
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jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL; |
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jobject ciEnv::_ArrayStoreException_handle = NULL; |
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jobject ciEnv::_ClassCastException_handle = NULL; |
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||
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#ifndef PRODUCT |
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static bool firstEnv = true; |
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#endif /* PRODUCT */ |
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||
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// ------------------------------------------------------------------ |
|
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// ciEnv::ciEnv |
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ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) { |
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VM_ENTRY_MARK; |
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// Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. |
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thread->set_env(this); |
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assert(ciEnv::current() == this, "sanity"); |
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_oop_recorder = NULL; |
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_debug_info = NULL; |
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_dependencies = NULL; |
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_failure_reason = NULL; |
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_compilable = MethodCompilable; |
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_break_at_compile = false; |
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_compiler_data = NULL; |
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#ifndef PRODUCT |
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assert(!firstEnv, "not initialized properly"); |
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#endif /* !PRODUCT */ |
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_system_dictionary_modification_counter = system_dictionary_modification_counter; |
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_num_inlined_bytecodes = 0; |
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assert(task == NULL || thread->task() == task, "sanity"); |
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_task = task; |
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_log = NULL; |
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||
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// Temporary buffer for creating symbols and such. |
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_name_buffer = NULL; |
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_name_buffer_len = 0; |
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||
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_arena = &_ciEnv_arena; |
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_factory = new (_arena) ciObjectFactory(_arena, 128); |
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// Preload commonly referenced system ciObjects. |
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// During VM initialization, these instances have not yet been created. |
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// Assertions ensure that these instances are not accessed before |
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// their initialization. |
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||
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assert(Universe::is_fully_initialized(), "should be complete"); |
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oop o = Universe::null_ptr_exception_instance(); |
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assert(o != NULL, "should have been initialized"); |
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_NullPointerException_instance = get_object(o)->as_instance(); |
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o = Universe::arithmetic_exception_instance(); |
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assert(o != NULL, "should have been initialized"); |
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_ArithmeticException_instance = get_object(o)->as_instance(); |
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_ArrayIndexOutOfBoundsException_instance = NULL; |
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_ArrayStoreException_instance = NULL; |
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_ClassCastException_instance = NULL; |
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_the_null_string = NULL; |
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_the_min_jint_string = NULL; |
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} |
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ciEnv::ciEnv(Arena* arena) { |
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ASSERT_IN_VM; |
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// Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc. |
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CompilerThread* current_thread = CompilerThread::current(); |
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assert(current_thread->env() == NULL, "must be"); |
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current_thread->set_env(this); |
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assert(ciEnv::current() == this, "sanity"); |
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_oop_recorder = NULL; |
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_debug_info = NULL; |
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_dependencies = NULL; |
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_failure_reason = NULL; |
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_compilable = MethodCompilable_never; |
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_break_at_compile = false; |
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_compiler_data = NULL; |
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#ifndef PRODUCT |
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assert(firstEnv, "must be first"); |
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firstEnv = false; |
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#endif /* !PRODUCT */ |
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||
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_system_dictionary_modification_counter = 0; |
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_num_inlined_bytecodes = 0; |
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_task = NULL; |
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_log = NULL; |
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||
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// Temporary buffer for creating symbols and such. |
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_name_buffer = NULL; |
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_name_buffer_len = 0; |
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||
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_arena = arena; |
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_factory = new (_arena) ciObjectFactory(_arena, 128); |
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// Preload commonly referenced system ciObjects. |
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||
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// During VM initialization, these instances have not yet been created. |
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// Assertions ensure that these instances are not accessed before |
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// their initialization. |
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assert(Universe::is_fully_initialized(), "must be"); |
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oop o = Universe::null_ptr_exception_instance(); |
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assert(o != NULL, "should have been initialized"); |
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_NullPointerException_instance = get_object(o)->as_instance(); |
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o = Universe::arithmetic_exception_instance(); |
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assert(o != NULL, "should have been initialized"); |
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_ArithmeticException_instance = get_object(o)->as_instance(); |
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||
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_ArrayIndexOutOfBoundsException_instance = NULL; |
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_ArrayStoreException_instance = NULL; |
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_ClassCastException_instance = NULL; |
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_the_null_string = NULL; |
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_the_min_jint_string = NULL; |
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} |
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||
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ciEnv::~ciEnv() { |
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CompilerThread* current_thread = CompilerThread::current(); |
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current_thread->set_env(NULL); |
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} |
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// ------------------------------------------------------------------ |
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// Cache Jvmti state |
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void ciEnv::cache_jvmti_state() { |
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VM_ENTRY_MARK; |
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// Get Jvmti capabilities under lock to get consistant values. |
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MutexLocker mu(JvmtiThreadState_lock); |
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_jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint(); |
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_jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables(); |
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_jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions(); |
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} |
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// ------------------------------------------------------------------ |
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// Cache DTrace flags |
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void ciEnv::cache_dtrace_flags() { |
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// Need lock? |
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_dtrace_extended_probes = ExtendedDTraceProbes; |
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if (_dtrace_extended_probes) { |
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_dtrace_monitor_probes = true; |
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_dtrace_method_probes = true; |
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_dtrace_alloc_probes = true; |
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} else { |
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_dtrace_monitor_probes = DTraceMonitorProbes; |
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_dtrace_method_probes = DTraceMethodProbes; |
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_dtrace_alloc_probes = DTraceAllocProbes; |
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} |
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} |
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// ------------------------------------------------------------------ |
1 | 236 |
// helper for lazy exception creation |
237 |
ciInstance* ciEnv::get_or_create_exception(jobject& handle, symbolHandle name) { |
|
238 |
VM_ENTRY_MARK; |
|
239 |
if (handle == NULL) { |
|
240 |
// Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance. |
|
241 |
klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD); |
|
242 |
jobject objh = NULL; |
|
243 |
if (!HAS_PENDING_EXCEPTION && k != NULL) { |
|
244 |
oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD); |
|
245 |
if (!HAS_PENDING_EXCEPTION) |
|
246 |
objh = JNIHandles::make_global(obj); |
|
247 |
} |
|
248 |
if (HAS_PENDING_EXCEPTION) { |
|
249 |
CLEAR_PENDING_EXCEPTION; |
|
250 |
} else { |
|
251 |
handle = objh; |
|
252 |
} |
|
253 |
} |
|
254 |
oop obj = JNIHandles::resolve(handle); |
|
255 |
return obj == NULL? NULL: get_object(obj)->as_instance(); |
|
256 |
} |
|
257 |
||
258 |
// ------------------------------------------------------------------ |
|
259 |
// ciEnv::ArrayIndexOutOfBoundsException_instance, etc. |
|
260 |
ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() { |
|
261 |
if (_ArrayIndexOutOfBoundsException_instance == NULL) { |
|
262 |
_ArrayIndexOutOfBoundsException_instance |
|
263 |
= get_or_create_exception(_ArrayIndexOutOfBoundsException_handle, |
|
264 |
vmSymbolHandles::java_lang_ArrayIndexOutOfBoundsException()); |
|
265 |
} |
|
266 |
return _ArrayIndexOutOfBoundsException_instance; |
|
267 |
} |
|
268 |
ciInstance* ciEnv::ArrayStoreException_instance() { |
|
269 |
if (_ArrayStoreException_instance == NULL) { |
|
270 |
_ArrayStoreException_instance |
|
271 |
= get_or_create_exception(_ArrayStoreException_handle, |
|
272 |
vmSymbolHandles::java_lang_ArrayStoreException()); |
|
273 |
} |
|
274 |
return _ArrayStoreException_instance; |
|
275 |
} |
|
276 |
ciInstance* ciEnv::ClassCastException_instance() { |
|
277 |
if (_ClassCastException_instance == NULL) { |
|
278 |
_ClassCastException_instance |
|
279 |
= get_or_create_exception(_ClassCastException_handle, |
|
280 |
vmSymbolHandles::java_lang_ClassCastException()); |
|
281 |
} |
|
282 |
return _ClassCastException_instance; |
|
283 |
} |
|
284 |
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ciInstance* ciEnv::the_null_string() { |
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if (_the_null_string == NULL) { |
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VM_ENTRY_MARK; |
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_the_null_string = get_object(Universe::the_null_string())->as_instance(); |
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} |
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return _the_null_string; |
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} |
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|
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ciInstance* ciEnv::the_min_jint_string() { |
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if (_the_min_jint_string == NULL) { |
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VM_ENTRY_MARK; |
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_the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance(); |
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} |
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return _the_min_jint_string; |
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} |
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|
300 |
|
1 | 301 |
// ------------------------------------------------------------------ |
302 |
// ciEnv::get_method_from_handle |
|
303 |
ciMethod* ciEnv::get_method_from_handle(jobject method) { |
|
304 |
VM_ENTRY_MARK; |
|
305 |
return get_object(JNIHandles::resolve(method))->as_method(); |
|
306 |
} |
|
307 |
||
308 |
// ------------------------------------------------------------------ |
|
309 |
// ciEnv::make_array |
|
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310 |
ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) { |
1 | 311 |
VM_ENTRY_MARK; |
312 |
int length = objects->length(); |
|
313 |
objArrayOop a = oopFactory::new_system_objArray(length, THREAD); |
|
314 |
if (HAS_PENDING_EXCEPTION) { |
|
315 |
CLEAR_PENDING_EXCEPTION; |
|
316 |
record_out_of_memory_failure(); |
|
317 |
return NULL; |
|
318 |
} |
|
319 |
for (int i = 0; i < length; i++) { |
|
320 |
a->obj_at_put(i, objects->at(i)->get_oop()); |
|
321 |
} |
|
322 |
assert(a->is_perm(), ""); |
|
323 |
return get_object(a)->as_array(); |
|
324 |
} |
|
325 |
||
326 |
||
327 |
// ------------------------------------------------------------------ |
|
328 |
// ciEnv::array_element_offset_in_bytes |
|
329 |
int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) { |
|
330 |
VM_ENTRY_MARK; |
|
331 |
objArrayOop a = (objArrayOop)a_h->get_oop(); |
|
332 |
assert(a->is_objArray(), ""); |
|
333 |
int length = a->length(); |
|
334 |
oop o = o_h->get_oop(); |
|
335 |
for (int i = 0; i < length; i++) { |
|
336 |
if (a->obj_at(i) == o) return i; |
|
337 |
} |
|
338 |
return -1; |
|
339 |
} |
|
340 |
||
341 |
||
342 |
// ------------------------------------------------------------------ |
|
343 |
// ciEnv::check_klass_accessiblity |
|
344 |
// |
|
345 |
// Note: the logic of this method should mirror the logic of |
|
346 |
// constantPoolOopDesc::verify_constant_pool_resolve. |
|
347 |
bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass, |
|
348 |
klassOop resolved_klass) { |
|
349 |
if (accessing_klass == NULL || !accessing_klass->is_loaded()) { |
|
350 |
return true; |
|
351 |
} |
|
352 |
if (accessing_klass->is_obj_array()) { |
|
353 |
accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass(); |
|
354 |
} |
|
355 |
if (!accessing_klass->is_instance_klass()) { |
|
356 |
return true; |
|
357 |
} |
|
358 |
||
359 |
if (resolved_klass->klass_part()->oop_is_objArray()) { |
|
360 |
// Find the element klass, if this is an array. |
|
361 |
resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass(); |
|
362 |
} |
|
363 |
if (resolved_klass->klass_part()->oop_is_instance()) { |
|
364 |
return Reflection::verify_class_access(accessing_klass->get_klassOop(), |
|
365 |
resolved_klass, |
|
366 |
true); |
|
367 |
} |
|
368 |
return true; |
|
369 |
} |
|
370 |
||
371 |
// ------------------------------------------------------------------ |
|
372 |
// ciEnv::get_klass_by_name_impl |
|
373 |
ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass, |
|
374 |
ciSymbol* name, |
|
375 |
bool require_local) { |
|
376 |
ASSERT_IN_VM; |
|
377 |
EXCEPTION_CONTEXT; |
|
378 |
||
379 |
// Now we need to check the SystemDictionary |
|
380 |
symbolHandle sym(THREAD, name->get_symbolOop()); |
|
381 |
if (sym->byte_at(0) == 'L' && |
|
382 |
sym->byte_at(sym->utf8_length()-1) == ';') { |
|
383 |
// This is a name from a signature. Strip off the trimmings. |
|
384 |
sym = oopFactory::new_symbol_handle(sym->as_utf8()+1, |
|
385 |
sym->utf8_length()-2, |
|
386 |
KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass)); |
|
387 |
name = get_object(sym())->as_symbol(); |
|
388 |
} |
|
389 |
||
390 |
// Check for prior unloaded klass. The SystemDictionary's answers |
|
391 |
// can vary over time but the compiler needs consistency. |
|
392 |
ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name); |
|
393 |
if (unloaded_klass != NULL) { |
|
394 |
if (require_local) return NULL; |
|
395 |
return unloaded_klass; |
|
396 |
} |
|
397 |
||
398 |
Handle loader(THREAD, (oop)NULL); |
|
399 |
Handle domain(THREAD, (oop)NULL); |
|
400 |
if (accessing_klass != NULL) { |
|
401 |
loader = Handle(THREAD, accessing_klass->loader()); |
|
402 |
domain = Handle(THREAD, accessing_klass->protection_domain()); |
|
403 |
} |
|
404 |
||
405 |
// setup up the proper type to return on OOM |
|
406 |
ciKlass* fail_type; |
|
407 |
if (sym->byte_at(0) == '[') { |
|
408 |
fail_type = _unloaded_ciobjarrayklass; |
|
409 |
} else { |
|
410 |
fail_type = _unloaded_ciinstance_klass; |
|
411 |
} |
|
412 |
klassOop found_klass; |
|
413 |
if (!require_local) { |
|
414 |
found_klass = |
|
415 |
SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, |
|
416 |
KILL_COMPILE_ON_FATAL_(fail_type)); |
|
417 |
} else { |
|
418 |
found_klass = |
|
419 |
SystemDictionary::find_instance_or_array_klass(sym, loader, domain, |
|
420 |
KILL_COMPILE_ON_FATAL_(fail_type)); |
|
421 |
} |
|
422 |
||
423 |
// If we fail to find an array klass, look again for its element type. |
|
424 |
// The element type may be available either locally or via constraints. |
|
425 |
// In either case, if we can find the element type in the system dictionary, |
|
426 |
// we must build an array type around it. The CI requires array klasses |
|
427 |
// to be loaded if their element klasses are loaded, except when memory |
|
428 |
// is exhausted. |
|
429 |
if (sym->byte_at(0) == '[' && |
|
430 |
(sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) { |
|
431 |
// We have an unloaded array. |
|
432 |
// Build it on the fly if the element class exists. |
|
433 |
symbolOop elem_sym = oopFactory::new_symbol(sym->as_utf8()+1, |
|
434 |
sym->utf8_length()-1, |
|
435 |
KILL_COMPILE_ON_FATAL_(fail_type)); |
|
436 |
// Get element ciKlass recursively. |
|
437 |
ciKlass* elem_klass = |
|
438 |
get_klass_by_name_impl(accessing_klass, |
|
439 |
get_object(elem_sym)->as_symbol(), |
|
440 |
require_local); |
|
441 |
if (elem_klass != NULL && elem_klass->is_loaded()) { |
|
442 |
// Now make an array for it |
|
443 |
return ciObjArrayKlass::make_impl(elem_klass); |
|
444 |
} |
|
445 |
} |
|
446 |
||
447 |
if (found_klass != NULL) { |
|
448 |
// Found it. Build a CI handle. |
|
449 |
return get_object(found_klass)->as_klass(); |
|
450 |
} |
|
451 |
||
452 |
if (require_local) return NULL; |
|
453 |
// Not yet loaded into the VM, or not governed by loader constraints. |
|
454 |
// Make a CI representative for it. |
|
455 |
return get_unloaded_klass(accessing_klass, name); |
|
456 |
} |
|
457 |
||
458 |
// ------------------------------------------------------------------ |
|
459 |
// ciEnv::get_klass_by_name |
|
460 |
ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass, |
|
461 |
ciSymbol* klass_name, |
|
462 |
bool require_local) { |
|
463 |
GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass, |
|
464 |
klass_name, |
|
465 |
require_local);) |
|
466 |
} |
|
467 |
||
468 |
// ------------------------------------------------------------------ |
|
469 |
// ciEnv::get_klass_by_index_impl |
|
470 |
// |
|
471 |
// Implementation of get_klass_by_index. |
|
4567
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|
472 |
ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool, |
1 | 473 |
int index, |
4567
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twisti
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|
474 |
bool& is_accessible, |
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diff
changeset
|
475 |
ciInstanceKlass* accessor) { |
1 | 476 |
EXCEPTION_CONTEXT; |
477 |
KlassHandle klass (THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index)); |
|
478 |
symbolHandle klass_name; |
|
479 |
if (klass.is_null()) { |
|
480 |
// The klass has not been inserted into the constant pool. |
|
481 |
// Try to look it up by name. |
|
482 |
{ |
|
483 |
// We have to lock the cpool to keep the oop from being resolved |
|
484 |
// while we are accessing it. |
|
485 |
ObjectLocker ol(cpool, THREAD); |
|
486 |
||
487 |
constantTag tag = cpool->tag_at(index); |
|
488 |
if (tag.is_klass()) { |
|
489 |
// The klass has been inserted into the constant pool |
|
490 |
// very recently. |
|
491 |
klass = KlassHandle(THREAD, cpool->resolved_klass_at(index)); |
|
492 |
} else if (tag.is_symbol()) { |
|
493 |
klass_name = symbolHandle(THREAD, cpool->symbol_at(index)); |
|
494 |
} else { |
|
495 |
assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag"); |
|
496 |
klass_name = symbolHandle(THREAD, cpool->unresolved_klass_at(index)); |
|
497 |
} |
|
498 |
} |
|
499 |
} |
|
500 |
||
501 |
if (klass.is_null()) { |
|
502 |
// Not found in constant pool. Use the name to do the lookup. |
|
503 |
ciKlass* k = get_klass_by_name_impl(accessor, |
|
504 |
get_object(klass_name())->as_symbol(), |
|
505 |
false); |
|
506 |
// Calculate accessibility the hard way. |
|
507 |
if (!k->is_loaded()) { |
|
508 |
is_accessible = false; |
|
509 |
} else if (k->loader() != accessor->loader() && |
|
510 |
get_klass_by_name_impl(accessor, k->name(), true) == NULL) { |
|
511 |
// Loaded only remotely. Not linked yet. |
|
512 |
is_accessible = false; |
|
513 |
} else { |
|
514 |
// Linked locally, and we must also check public/private, etc. |
|
515 |
is_accessible = check_klass_accessibility(accessor, k->get_klassOop()); |
|
516 |
} |
|
517 |
return k; |
|
518 |
} |
|
519 |
||
520 |
// Check for prior unloaded klass. The SystemDictionary's answers |
|
521 |
// can vary over time but the compiler needs consistency. |
|
522 |
ciSymbol* name = get_object(klass()->klass_part()->name())->as_symbol(); |
|
523 |
ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name); |
|
524 |
if (unloaded_klass != NULL) { |
|
525 |
is_accessible = false; |
|
526 |
return unloaded_klass; |
|
527 |
} |
|
528 |
||
529 |
// It is known to be accessible, since it was found in the constant pool. |
|
530 |
is_accessible = true; |
|
531 |
return get_object(klass())->as_klass(); |
|
532 |
} |
|
533 |
||
534 |
// ------------------------------------------------------------------ |
|
535 |
// ciEnv::get_klass_by_index |
|
536 |
// |
|
537 |
// Get a klass from the constant pool. |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
538 |
ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool, |
1 | 539 |
int index, |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
540 |
bool& is_accessible, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
541 |
ciInstanceKlass* accessor) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
542 |
GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);) |
1 | 543 |
} |
544 |
||
545 |
// ------------------------------------------------------------------ |
|
546 |
// ciEnv::get_constant_by_index_impl |
|
547 |
// |
|
548 |
// Implementation of get_constant_by_index(). |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
549 |
ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool, |
5882 | 550 |
int pool_index, int cache_index, |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
551 |
ciInstanceKlass* accessor) { |
5882 | 552 |
bool ignore_will_link; |
1 | 553 |
EXCEPTION_CONTEXT; |
5882 | 554 |
int index = pool_index; |
555 |
if (cache_index >= 0) { |
|
556 |
assert(index < 0, "only one kind of index at a time"); |
|
557 |
ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index); |
|
558 |
index = cpc_entry->constant_pool_index(); |
|
559 |
oop obj = cpc_entry->f1(); |
|
560 |
if (obj != NULL) { |
|
561 |
assert(obj->is_instance(), "must be an instance"); |
|
562 |
ciObject* ciobj = get_object(obj); |
|
563 |
return ciConstant(T_OBJECT, ciobj); |
|
564 |
} |
|
565 |
} |
|
1 | 566 |
constantTag tag = cpool->tag_at(index); |
567 |
if (tag.is_int()) { |
|
568 |
return ciConstant(T_INT, (jint)cpool->int_at(index)); |
|
569 |
} else if (tag.is_long()) { |
|
570 |
return ciConstant((jlong)cpool->long_at(index)); |
|
571 |
} else if (tag.is_float()) { |
|
572 |
return ciConstant((jfloat)cpool->float_at(index)); |
|
573 |
} else if (tag.is_double()) { |
|
574 |
return ciConstant((jdouble)cpool->double_at(index)); |
|
575 |
} else if (tag.is_string() || tag.is_unresolved_string()) { |
|
1550
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
576 |
oop string = NULL; |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
577 |
if (cpool->is_pseudo_string_at(index)) { |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
578 |
string = cpool->pseudo_string_at(index); |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
579 |
} else { |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
580 |
string = cpool->string_at(index, THREAD); |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
581 |
if (HAS_PENDING_EXCEPTION) { |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
582 |
CLEAR_PENDING_EXCEPTION; |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
583 |
record_out_of_memory_failure(); |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
584 |
return ciConstant(); |
be2fc37a817f
6653858: dynamic languages need to be able to load anonymous classes
jrose
parents:
1
diff
changeset
|
585 |
} |
1 | 586 |
} |
587 |
ciObject* constant = get_object(string); |
|
588 |
assert (constant->is_instance(), "must be an instance, or not? "); |
|
589 |
return ciConstant(T_OBJECT, constant); |
|
590 |
} else if (tag.is_klass() || tag.is_unresolved_klass()) { |
|
591 |
// 4881222: allow ldc to take a class type |
|
5882 | 592 |
ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor); |
1 | 593 |
if (HAS_PENDING_EXCEPTION) { |
594 |
CLEAR_PENDING_EXCEPTION; |
|
595 |
record_out_of_memory_failure(); |
|
596 |
return ciConstant(); |
|
597 |
} |
|
598 |
assert (klass->is_instance_klass() || klass->is_array_klass(), |
|
599 |
"must be an instance or array klass "); |
|
5882 | 600 |
return ciConstant(T_OBJECT, klass->java_mirror()); |
4567
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6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
601 |
} else if (tag.is_object()) { |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
602 |
oop obj = cpool->object_at(index); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
603 |
assert(obj->is_instance(), "must be an instance"); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
604 |
ciObject* ciobj = get_object(obj); |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
605 |
return ciConstant(T_OBJECT, ciobj); |
5882 | 606 |
} else if (tag.is_method_type()) { |
607 |
// must execute Java code to link this CP entry into cache[i].f1 |
|
608 |
ciSymbol* signature = get_object(cpool->method_type_signature_at(index))->as_symbol(); |
|
609 |
ciObject* ciobj = get_unloaded_method_type_constant(signature); |
|
610 |
return ciConstant(T_OBJECT, ciobj); |
|
611 |
} else if (tag.is_method_handle()) { |
|
612 |
// must execute Java code to link this CP entry into cache[i].f1 |
|
613 |
int ref_kind = cpool->method_handle_ref_kind_at(index); |
|
614 |
int callee_index = cpool->method_handle_klass_index_at(index); |
|
615 |
ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor); |
|
616 |
ciSymbol* name = get_object(cpool->method_handle_name_ref_at(index))->as_symbol(); |
|
617 |
ciSymbol* signature = get_object(cpool->method_handle_signature_ref_at(index))->as_symbol(); |
|
618 |
ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind); |
|
619 |
return ciConstant(T_OBJECT, ciobj); |
|
1 | 620 |
} else { |
621 |
ShouldNotReachHere(); |
|
622 |
return ciConstant(); |
|
623 |
} |
|
624 |
} |
|
625 |
||
626 |
// ------------------------------------------------------------------ |
|
627 |
// ciEnv::get_constant_by_index |
|
628 |
// |
|
629 |
// Pull a constant out of the constant pool. How appropriate. |
|
630 |
// |
|
631 |
// Implementation note: this query is currently in no way cached. |
|
4567
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6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
632 |
ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool, |
5882 | 633 |
int pool_index, int cache_index, |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
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parents:
4566
diff
changeset
|
634 |
ciInstanceKlass* accessor) { |
5882 | 635 |
GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);) |
1 | 636 |
} |
637 |
||
638 |
// ------------------------------------------------------------------ |
|
639 |
// ciEnv::get_field_by_index_impl |
|
640 |
// |
|
641 |
// Implementation of get_field_by_index. |
|
642 |
// |
|
643 |
// Implementation note: the results of field lookups are cached |
|
644 |
// in the accessor klass. |
|
645 |
ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor, |
|
646 |
int index) { |
|
647 |
ciConstantPoolCache* cache = accessor->field_cache(); |
|
648 |
if (cache == NULL) { |
|
649 |
ciField* field = new (arena()) ciField(accessor, index); |
|
650 |
return field; |
|
651 |
} else { |
|
652 |
ciField* field = (ciField*)cache->get(index); |
|
653 |
if (field == NULL) { |
|
654 |
field = new (arena()) ciField(accessor, index); |
|
655 |
cache->insert(index, field); |
|
656 |
} |
|
657 |
return field; |
|
658 |
} |
|
659 |
} |
|
660 |
||
661 |
// ------------------------------------------------------------------ |
|
662 |
// ciEnv::get_field_by_index |
|
663 |
// |
|
664 |
// Get a field by index from a klass's constant pool. |
|
665 |
ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor, |
|
666 |
int index) { |
|
667 |
GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);) |
|
668 |
} |
|
669 |
||
670 |
// ------------------------------------------------------------------ |
|
671 |
// ciEnv::lookup_method |
|
672 |
// |
|
673 |
// Perform an appropriate method lookup based on accessor, holder, |
|
674 |
// name, signature, and bytecode. |
|
675 |
methodOop ciEnv::lookup_method(instanceKlass* accessor, |
|
676 |
instanceKlass* holder, |
|
677 |
symbolOop name, |
|
678 |
symbolOop sig, |
|
679 |
Bytecodes::Code bc) { |
|
680 |
EXCEPTION_CONTEXT; |
|
681 |
KlassHandle h_accessor(THREAD, accessor); |
|
682 |
KlassHandle h_holder(THREAD, holder); |
|
683 |
symbolHandle h_name(THREAD, name); |
|
684 |
symbolHandle h_sig(THREAD, sig); |
|
685 |
LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL)); |
|
686 |
methodHandle dest_method; |
|
687 |
switch (bc) { |
|
688 |
case Bytecodes::_invokestatic: |
|
689 |
dest_method = |
|
690 |
LinkResolver::resolve_static_call_or_null(h_holder, h_name, h_sig, h_accessor); |
|
691 |
break; |
|
692 |
case Bytecodes::_invokespecial: |
|
693 |
dest_method = |
|
694 |
LinkResolver::resolve_special_call_or_null(h_holder, h_name, h_sig, h_accessor); |
|
695 |
break; |
|
696 |
case Bytecodes::_invokeinterface: |
|
697 |
dest_method = |
|
698 |
LinkResolver::linktime_resolve_interface_method_or_null(h_holder, h_name, h_sig, |
|
699 |
h_accessor, true); |
|
700 |
break; |
|
701 |
case Bytecodes::_invokevirtual: |
|
702 |
dest_method = |
|
703 |
LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, h_name, h_sig, |
|
704 |
h_accessor, true); |
|
705 |
break; |
|
706 |
default: ShouldNotReachHere(); |
|
707 |
} |
|
708 |
||
709 |
return dest_method(); |
|
710 |
} |
|
711 |
||
712 |
||
713 |
// ------------------------------------------------------------------ |
|
714 |
// ciEnv::get_method_by_index_impl |
|
4567
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diff
changeset
|
715 |
ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
716 |
int index, Bytecodes::Code bc, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
717 |
ciInstanceKlass* accessor) { |
1 | 718 |
int holder_index = cpool->klass_ref_index_at(index); |
719 |
bool holder_is_accessible; |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
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diff
changeset
|
720 |
ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor); |
1 | 721 |
ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder); |
722 |
||
723 |
// Get the method's name and signature. |
|
724 |
symbolOop name_sym = cpool->name_ref_at(index); |
|
4429
d7eb4e2099aa
6858164: invokedynamic code needs some cleanup (post-6655638)
jrose
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3908
diff
changeset
|
725 |
symbolOop sig_sym = cpool->signature_ref_at(index); |
1 | 726 |
|
727 |
if (holder_is_accessible) { // Our declared holder is loaded. |
|
728 |
instanceKlass* lookup = declared_holder->get_instanceKlass(); |
|
729 |
methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc); |
|
730 |
if (m != NULL) { |
|
731 |
// We found the method. |
|
732 |
return get_object(m)->as_method(); |
|
733 |
} |
|
734 |
} |
|
735 |
||
736 |
// Either the declared holder was not loaded, or the method could |
|
737 |
// not be found. Create a dummy ciMethod to represent the failed |
|
738 |
// lookup. |
|
739 |
||
740 |
return get_unloaded_method(declared_holder, |
|
741 |
get_object(name_sym)->as_symbol(), |
|
742 |
get_object(sig_sym)->as_symbol()); |
|
743 |
} |
|
744 |
||
745 |
||
746 |
// ------------------------------------------------------------------ |
|
4566
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parents:
4450
diff
changeset
|
747 |
// ciEnv::get_fake_invokedynamic_method_impl |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
748 |
ciMethod* ciEnv::get_fake_invokedynamic_method_impl(constantPoolHandle cpool, |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
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parents:
4450
diff
changeset
|
749 |
int index, Bytecodes::Code bc) { |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
750 |
// Compare the following logic with InterpreterRuntime::resolve_invokedynamic. |
4566
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twisti
parents:
4450
diff
changeset
|
751 |
assert(bc == Bytecodes::_invokedynamic, "must be invokedynamic"); |
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
752 |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
753 |
bool is_resolved = cpool->cache()->main_entry_at(index)->is_resolved(bc); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
754 |
if (is_resolved && (oop) cpool->cache()->secondary_entry_at(index)->f1() == NULL) |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
755 |
// FIXME: code generation could allow for null (unlinked) call site |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
756 |
is_resolved = false; |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
757 |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
758 |
// Call site might not be resolved yet. We could create a real invoker method from the |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
759 |
// compiler, but it is simpler to stop the code path here with an unlinked method. |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
760 |
if (!is_resolved) { |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
761 |
ciInstanceKlass* mh_klass = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass(); |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
762 |
ciSymbol* sig_sym = get_object(cpool->signature_ref_at(index))->as_symbol(); |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
763 |
return get_unloaded_method(mh_klass, ciSymbol::invokeExact_name(), sig_sym); |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
764 |
} |
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
765 |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
766 |
// Get the invoker methodOop from the constant pool. |
6064
71e316283a85
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
5882
diff
changeset
|
767 |
oop f1_value = cpool->cache()->main_entry_at(index)->f1(); |
71e316283a85
6969574: invokedynamic call sites deoptimize instead of executing
jrose
parents:
5882
diff
changeset
|
768 |
methodOop signature_invoker = methodOop(f1_value); |
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
769 |
assert(signature_invoker != NULL && signature_invoker->is_method() && signature_invoker->is_method_handle_invoke(), |
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
770 |
"correct result from LinkResolver::resolve_invokedynamic"); |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
771 |
|
5420
586d3988e72b
6939134: JSR 292 adjustments to method handle invocation
jrose
parents:
5353
diff
changeset
|
772 |
return get_object(signature_invoker)->as_method(); |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
773 |
} |
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
774 |
|
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
775 |
|
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
776 |
// ------------------------------------------------------------------ |
1 | 777 |
// ciEnv::get_instance_klass_for_declared_method_holder |
778 |
ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) { |
|
779 |
// For the case of <array>.clone(), the method holder can be a ciArrayKlass |
|
780 |
// instead of a ciInstanceKlass. For that case simply pretend that the |
|
781 |
// declared holder is Object.clone since that's where the call will bottom out. |
|
782 |
// A more correct fix would trickle out through many interfaces in CI, |
|
783 |
// requiring ciInstanceKlass* to become ciKlass* and many more places would |
|
784 |
// require checks to make sure the expected type was found. Given that this |
|
785 |
// only occurs for clone() the more extensive fix seems like overkill so |
|
786 |
// instead we simply smear the array type into Object. |
|
787 |
if (method_holder->is_instance_klass()) { |
|
788 |
return method_holder->as_instance_klass(); |
|
789 |
} else if (method_holder->is_array_klass()) { |
|
790 |
return current()->Object_klass(); |
|
791 |
} else { |
|
792 |
ShouldNotReachHere(); |
|
793 |
} |
|
794 |
return NULL; |
|
795 |
} |
|
796 |
||
797 |
||
798 |
// ------------------------------------------------------------------ |
|
799 |
// ciEnv::get_method_by_index |
|
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
800 |
ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
801 |
int index, Bytecodes::Code bc, |
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
802 |
ciInstanceKlass* accessor) { |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
803 |
if (bc == Bytecodes::_invokedynamic) { |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
804 |
GUARDED_VM_ENTRY(return get_fake_invokedynamic_method_impl(cpool, index, bc);) |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
805 |
} else { |
4567
7fc02fbe5c7a
6893268: additional dynamic language related optimizations in C2
twisti
parents:
4566
diff
changeset
|
806 |
GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);) |
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
807 |
} |
1 | 808 |
} |
809 |
||
4566
b363f6ef4068
6829187: compiler optimizations required for JSR 292
twisti
parents:
4450
diff
changeset
|
810 |
|
1 | 811 |
// ------------------------------------------------------------------ |
812 |
// ciEnv::name_buffer |
|
813 |
char *ciEnv::name_buffer(int req_len) { |
|
814 |
if (_name_buffer_len < req_len) { |
|
815 |
if (_name_buffer == NULL) { |
|
816 |
_name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len); |
|
817 |
_name_buffer_len = req_len; |
|
818 |
} else { |
|
819 |
_name_buffer = |
|
820 |
(char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len); |
|
821 |
_name_buffer_len = req_len; |
|
822 |
} |
|
823 |
} |
|
824 |
return _name_buffer; |
|
825 |
} |
|
826 |
||
827 |
// ------------------------------------------------------------------ |
|
828 |
// ciEnv::is_in_vm |
|
829 |
bool ciEnv::is_in_vm() { |
|
830 |
return JavaThread::current()->thread_state() == _thread_in_vm; |
|
831 |
} |
|
832 |
||
833 |
bool ciEnv::system_dictionary_modification_counter_changed() { |
|
834 |
return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications(); |
|
835 |
} |
|
836 |
||
837 |
// ------------------------------------------------------------------ |
|
838 |
// ciEnv::check_for_system_dictionary_modification |
|
839 |
// Check for changes to the system dictionary during compilation |
|
840 |
// class loads, evolution, breakpoints |
|
841 |
void ciEnv::check_for_system_dictionary_modification(ciMethod* target) { |
|
842 |
if (failing()) return; // no need for further checks |
|
843 |
||
844 |
// Dependencies must be checked when the system dictionary changes. |
|
845 |
// If logging is enabled all violated dependences will be recorded in |
|
846 |
// the log. In debug mode check dependencies even if the system |
|
847 |
// dictionary hasn't changed to verify that no invalid dependencies |
|
848 |
// were inserted. Any violated dependences in this case are dumped to |
|
849 |
// the tty. |
|
850 |
||
851 |
bool counter_changed = system_dictionary_modification_counter_changed(); |
|
852 |
bool test_deps = counter_changed; |
|
853 |
DEBUG_ONLY(test_deps = true); |
|
854 |
if (!test_deps) return; |
|
855 |
||
856 |
bool print_failures = false; |
|
857 |
DEBUG_ONLY(print_failures = !counter_changed); |
|
858 |
||
859 |
bool keep_going = (print_failures || xtty != NULL); |
|
860 |
||
861 |
int violated = 0; |
|
862 |
||
863 |
for (Dependencies::DepStream deps(dependencies()); deps.next(); ) { |
|
864 |
klassOop witness = deps.check_dependency(); |
|
865 |
if (witness != NULL) { |
|
866 |
++violated; |
|
867 |
if (print_failures) deps.print_dependency(witness, /*verbose=*/ true); |
|
868 |
// If there's no log and we're not sanity-checking, we're done. |
|
869 |
if (!keep_going) break; |
|
870 |
} |
|
871 |
} |
|
872 |
||
873 |
if (violated != 0) { |
|
874 |
assert(counter_changed, "failed dependencies, but counter didn't change"); |
|
875 |
record_failure("concurrent class loading"); |
|
876 |
} |
|
877 |
} |
|
878 |
||
879 |
// ------------------------------------------------------------------ |
|
880 |
// ciEnv::register_method |
|
881 |
void ciEnv::register_method(ciMethod* target, |
|
882 |
int entry_bci, |
|
883 |
CodeOffsets* offsets, |
|
884 |
int orig_pc_offset, |
|
885 |
CodeBuffer* code_buffer, |
|
886 |
int frame_words, |
|
887 |
OopMapSet* oop_map_set, |
|
888 |
ExceptionHandlerTable* handler_table, |
|
889 |
ImplicitExceptionTable* inc_table, |
|
890 |
AbstractCompiler* compiler, |
|
891 |
int comp_level, |
|
892 |
bool has_debug_info, |
|
893 |
bool has_unsafe_access) { |
|
894 |
VM_ENTRY_MARK; |
|
895 |
nmethod* nm = NULL; |
|
896 |
{ |
|
897 |
// To prevent compile queue updates. |
|
898 |
MutexLocker locker(MethodCompileQueue_lock, THREAD); |
|
899 |
||
900 |
// Prevent SystemDictionary::add_to_hierarchy from running |
|
901 |
// and invalidating our dependencies until we install this method. |
|
902 |
MutexLocker ml(Compile_lock); |
|
903 |
||
2867
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
904 |
// Change in Jvmti state may invalidate compilation. |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
905 |
if (!failing() && |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
906 |
( (!jvmti_can_hotswap_or_post_breakpoint() && |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
907 |
JvmtiExport::can_hotswap_or_post_breakpoint()) || |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
908 |
(!jvmti_can_access_local_variables() && |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
909 |
JvmtiExport::can_access_local_variables()) || |
4761
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
4571
diff
changeset
|
910 |
(!jvmti_can_post_on_exceptions() && |
bdb7375a1fee
6902182: 4/4 Starting with jdwp agent should not incur performance penalty
dcubed
parents:
4571
diff
changeset
|
911 |
JvmtiExport::can_post_on_exceptions()) )) { |
2867
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
912 |
record_failure("Jvmti state change invalidated dependencies"); |
1 | 913 |
} |
914 |
||
2867
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
915 |
// Change in DTrace flags may invalidate compilation. |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
916 |
if (!failing() && |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
917 |
( (!dtrace_extended_probes() && ExtendedDTraceProbes) || |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
918 |
(!dtrace_method_probes() && DTraceMethodProbes) || |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
919 |
(!dtrace_alloc_probes() && DTraceAllocProbes) )) { |
69187054225f
6788527: Server vm intermittently fails with assertion "live value must not be garbage" with fastdebug bits
kvn
parents:
1623
diff
changeset
|
920 |
record_failure("DTrace flags change invalidated dependencies"); |
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|
921 |
} |
1 | 922 |
|
2867
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|
923 |
if (!failing()) { |
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|
924 |
if (log() != NULL) { |
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|
925 |
// Log the dependencies which this compilation declares. |
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|
926 |
dependencies()->log_all_dependencies(); |
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|
927 |
} |
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|
928 |
|
69187054225f
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|
929 |
// Encode the dependencies now, so we can check them right away. |
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|
930 |
dependencies()->encode_content_bytes(); |
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|
931 |
|
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|
932 |
// Check for {class loads, evolution, breakpoints} during compilation |
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|
933 |
check_for_system_dictionary_modification(target); |
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|
934 |
} |
1 | 935 |
|
936 |
methodHandle method(THREAD, target->get_methodOop()); |
|
937 |
||
938 |
if (failing()) { |
|
939 |
// While not a true deoptimization, it is a preemptive decompile. |
|
940 |
methodDataOop mdo = method()->method_data(); |
|
941 |
if (mdo != NULL) { |
|
942 |
mdo->inc_decompile_count(); |
|
943 |
} |
|
944 |
||
945 |
// All buffers in the CodeBuffer are allocated in the CodeCache. |
|
946 |
// If the code buffer is created on each compile attempt |
|
947 |
// as in C2, then it must be freed. |
|
948 |
code_buffer->free_blob(); |
|
949 |
return; |
|
950 |
} |
|
951 |
||
952 |
assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); |
|
953 |
assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); |
|
954 |
||
955 |
nm = nmethod::new_nmethod(method, |
|
956 |
compile_id(), |
|
957 |
entry_bci, |
|
958 |
offsets, |
|
959 |
orig_pc_offset, |
|
960 |
debug_info(), dependencies(), code_buffer, |
|
961 |
frame_words, oop_map_set, |
|
962 |
handler_table, inc_table, |
|
963 |
compiler, comp_level); |
|
964 |
||
965 |
// Free codeBlobs |
|
966 |
code_buffer->free_blob(); |
|
967 |
||
968 |
// stress test 6243940 by immediately making the method |
|
969 |
// non-entrant behind the system's back. This has serious |
|
970 |
// side effects on the code cache and is not meant for |
|
971 |
// general stress testing |
|
972 |
if (nm != NULL && StressNonEntrant) { |
|
973 |
MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag); |
|
974 |
NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(), |
|
975 |
SharedRuntime::get_handle_wrong_method_stub()); |
|
976 |
} |
|
977 |
||
978 |
if (nm == NULL) { |
|
979 |
// The CodeCache is full. Print out warning and disable compilation. |
|
980 |
record_failure("code cache is full"); |
|
4750 | 981 |
{ |
982 |
MutexUnlocker ml(Compile_lock); |
|
983 |
MutexUnlocker locker(MethodCompileQueue_lock); |
|
984 |
CompileBroker::handle_full_code_cache(); |
|
1 | 985 |
} |
986 |
} else { |
|
987 |
NOT_PRODUCT(nm->set_has_debug_info(has_debug_info); ) |
|
988 |
nm->set_has_unsafe_access(has_unsafe_access); |
|
989 |
||
990 |
// Record successful registration. |
|
991 |
// (Put nm into the task handle *before* publishing to the Java heap.) |
|
992 |
if (task() != NULL) task()->set_code(nm); |
|
993 |
||
994 |
if (entry_bci == InvocationEntryBci) { |
|
6453 | 995 |
if (TieredCompilation) { |
996 |
// If there is an old version we're done with it |
|
997 |
nmethod* old = method->code(); |
|
998 |
if (TraceMethodReplacement && old != NULL) { |
|
999 |
ResourceMark rm; |
|
1000 |
char *method_name = method->name_and_sig_as_C_string(); |
|
1001 |
tty->print_cr("Replacing method %s", method_name); |
|
1002 |
} |
|
1003 |
if (old != NULL ) { |
|
1004 |
old->make_not_entrant(); |
|
1005 |
} |
|
1 | 1006 |
} |
1007 |
if (TraceNMethodInstalls ) { |
|
1008 |
ResourceMark rm; |
|
1009 |
char *method_name = method->name_and_sig_as_C_string(); |
|
1010 |
ttyLocker ttyl; |
|
1011 |
tty->print_cr("Installing method (%d) %s ", |
|
1012 |
comp_level, |
|
1013 |
method_name); |
|
1014 |
} |
|
1015 |
// Allow the code to be executed |
|
1016 |
method->set_code(method, nm); |
|
1017 |
} else { |
|
1018 |
if (TraceNMethodInstalls ) { |
|
1019 |
ResourceMark rm; |
|
1020 |
char *method_name = method->name_and_sig_as_C_string(); |
|
1021 |
ttyLocker ttyl; |
|
1022 |
tty->print_cr("Installing osr method (%d) %s @ %d", |
|
1023 |
comp_level, |
|
1024 |
method_name, |
|
1025 |
entry_bci); |
|
1026 |
} |
|
1027 |
instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm); |
|
1028 |
||
1029 |
} |
|
1030 |
} |
|
1031 |
} |
|
1032 |
// JVMTI -- compiled method notification (must be done outside lock) |
|
1033 |
if (nm != NULL) { |
|
1034 |
nm->post_compiled_method_load_event(); |
|
1035 |
} |
|
1036 |
||
1037 |
} |
|
1038 |
||
1039 |
||
1040 |
// ------------------------------------------------------------------ |
|
1041 |
// ciEnv::find_system_klass |
|
1042 |
ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { |
|
1043 |
VM_ENTRY_MARK; |
|
1044 |
return get_klass_by_name_impl(NULL, klass_name, false); |
|
1045 |
} |
|
1046 |
||
1047 |
// ------------------------------------------------------------------ |
|
1048 |
// ciEnv::comp_level |
|
1049 |
int ciEnv::comp_level() { |
|
6453 | 1050 |
if (task() == NULL) return CompLevel_highest_tier; |
1 | 1051 |
return task()->comp_level(); |
1052 |
} |
|
1053 |
||
1054 |
// ------------------------------------------------------------------ |
|
1055 |
// ciEnv::compile_id |
|
1056 |
uint ciEnv::compile_id() { |
|
1057 |
if (task() == NULL) return 0; |
|
1058 |
return task()->compile_id(); |
|
1059 |
} |
|
1060 |
||
1061 |
// ------------------------------------------------------------------ |
|
1062 |
// ciEnv::notice_inlined_method() |
|
1063 |
void ciEnv::notice_inlined_method(ciMethod* method) { |
|
1064 |
_num_inlined_bytecodes += method->code_size(); |
|
1065 |
} |
|
1066 |
||
1067 |
// ------------------------------------------------------------------ |
|
1068 |
// ciEnv::num_inlined_bytecodes() |
|
1069 |
int ciEnv::num_inlined_bytecodes() const { |
|
1070 |
return _num_inlined_bytecodes; |
|
1071 |
} |
|
1072 |
||
1073 |
// ------------------------------------------------------------------ |
|
1074 |
// ciEnv::record_failure() |
|
1075 |
void ciEnv::record_failure(const char* reason) { |
|
1076 |
if (log() != NULL) { |
|
1077 |
log()->elem("failure reason='%s'", reason); |
|
1078 |
} |
|
1079 |
if (_failure_reason == NULL) { |
|
1080 |
// Record the first failure reason. |
|
1081 |
_failure_reason = reason; |
|
1082 |
} |
|
1083 |
} |
|
1084 |
||
1085 |
// ------------------------------------------------------------------ |
|
1086 |
// ciEnv::record_method_not_compilable() |
|
1087 |
void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { |
|
1088 |
int new_compilable = |
|
1089 |
all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; |
|
1090 |
||
1091 |
// Only note transitions to a worse state |
|
1092 |
if (new_compilable > _compilable) { |
|
1093 |
if (log() != NULL) { |
|
1094 |
if (all_tiers) { |
|
1095 |
log()->elem("method_not_compilable"); |
|
1096 |
} else { |
|
1097 |
log()->elem("method_not_compilable_at_tier"); |
|
1098 |
} |
|
1099 |
} |
|
1100 |
_compilable = new_compilable; |
|
1101 |
||
1102 |
// Reset failure reason; this one is more important. |
|
1103 |
_failure_reason = NULL; |
|
1104 |
record_failure(reason); |
|
1105 |
} |
|
1106 |
} |
|
1107 |
||
1108 |
// ------------------------------------------------------------------ |
|
1109 |
// ciEnv::record_out_of_memory_failure() |
|
1110 |
void ciEnv::record_out_of_memory_failure() { |
|
1111 |
// If memory is low, we stop compiling methods. |
|
1112 |
record_method_not_compilable("out of memory"); |
|
1113 |
} |