Mercurial > hg > truffle
view src/share/vm/prims/whitebox.cpp @ 9552:6fed251e3cee
Merge (fixed: f49e1f023f7d Merge)
author | Lukas Stadler <lukas.stadler@jku.at> |
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date | Fri, 03 May 2013 20:26:43 +0200 |
parents | 7a5aec879506 |
children | 8df6ddda8090 4b2eebe03f93 |
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/* * Copyright (c) 2012, 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 "memory/universe.hpp" #include "oops/oop.inline.hpp" #include "classfile/symbolTable.hpp" #include "classfile/classLoaderData.hpp" #include "prims/whitebox.hpp" #include "prims/wbtestmethods/parserTests.hpp" #include "runtime/interfaceSupport.hpp" #include "runtime/os.hpp" #include "utilities/debug.hpp" #include "utilities/macros.hpp" #if INCLUDE_ALL_GCS #include "gc_implementation/g1/concurrentMark.hpp" #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" #include "gc_implementation/g1/heapRegionRemSet.hpp" #endif // INCLUDE_ALL_GCS #ifdef INCLUDE_NMT #include "services/memTracker.hpp" #endif // INCLUDE_NMT #include "compiler/compileBroker.hpp" #include "runtime/compilationPolicy.hpp" bool WhiteBox::_used = false; WB_ENTRY(jlong, WB_GetObjectAddress(JNIEnv* env, jobject o, jobject obj)) return (jlong)(void*)JNIHandles::resolve(obj); WB_END WB_ENTRY(jint, WB_GetHeapOopSize(JNIEnv* env, jobject o)) return heapOopSize; WB_END class WBIsKlassAliveClosure : public KlassClosure { Symbol* _name; bool _found; public: WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {} void do_klass(Klass* k) { if (_found) return; Symbol* ksym = k->name(); if (ksym->fast_compare(_name) == 0) { _found = true; } } bool found() const { return _found; } }; WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name)) Handle h_name = JNIHandles::resolve(name); if (h_name.is_null()) return false; Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false); TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return WBIsKlassAliveClosure closure(sym); ClassLoaderDataGraph::classes_do(&closure); return closure.found(); WB_END #if INCLUDE_ALL_GCS WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj)) G1CollectedHeap* g1 = G1CollectedHeap::heap(); oop result = JNIHandles::resolve(obj); const HeapRegion* hr = g1->heap_region_containing(result); return hr->isHumongous(); WB_END WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o)) G1CollectedHeap* g1 = G1CollectedHeap::heap(); size_t nr = g1->free_regions(); return (jlong)nr; WB_END WB_ENTRY(jboolean, WB_G1InConcurrentMark(JNIEnv* env, jobject o)) G1CollectedHeap* g1 = G1CollectedHeap::heap(); ConcurrentMark* cm = g1->concurrent_mark(); return cm->concurrent_marking_in_progress(); WB_END WB_ENTRY(jint, WB_G1RegionSize(JNIEnv* env, jobject o)) return (jint)HeapRegion::GrainBytes; WB_END #endif // INCLUDE_ALL_GCS #ifdef INCLUDE_NMT // Alloc memory using the test memory type so that we can use that to see if // NMT picks it up correctly WB_ENTRY(jlong, WB_NMTMalloc(JNIEnv* env, jobject o, jlong size)) jlong addr = 0; if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { addr = (jlong)(uintptr_t)os::malloc(size, mtTest); } return addr; WB_END // Free the memory allocated by NMTAllocTest WB_ENTRY(void, WB_NMTFree(JNIEnv* env, jobject o, jlong mem)) os::free((void*)(uintptr_t)mem, mtTest); WB_END WB_ENTRY(jlong, WB_NMTReserveMemory(JNIEnv* env, jobject o, jlong size)) jlong addr = 0; if (MemTracker::is_on() && !MemTracker::shutdown_in_progress()) { addr = (jlong)(uintptr_t)os::reserve_memory(size); MemTracker::record_virtual_memory_type((address)addr, mtTest); } return addr; WB_END WB_ENTRY(void, WB_NMTCommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) os::commit_memory((char *)(uintptr_t)addr, size); MemTracker::record_virtual_memory_type((address)(uintptr_t)addr, mtTest); WB_END WB_ENTRY(void, WB_NMTUncommitMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) os::uncommit_memory((char *)(uintptr_t)addr, size); WB_END WB_ENTRY(void, WB_NMTReleaseMemory(JNIEnv* env, jobject o, jlong addr, jlong size)) os::release_memory((char *)(uintptr_t)addr, size); WB_END // Block until the current generation of NMT data to be merged, used to reliably test the NMT feature WB_ENTRY(jboolean, WB_NMTWaitForDataMerge(JNIEnv* env)) if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { return false; } return MemTracker::wbtest_wait_for_data_merge(); WB_END #endif // INCLUDE_NMT static jmethodID reflected_method_to_jmid(JavaThread* thread, JNIEnv* env, jobject method) { assert(method != NULL, "method should not be null"); ThreadToNativeFromVM ttn(thread); return env->FromReflectedMethod(method); } WB_ENTRY(void, WB_DeoptimizeAll(JNIEnv* env, jobject o)) MutexLockerEx mu(Compile_lock); CodeCache::mark_all_nmethods_for_deoptimization(); VM_Deoptimize op; VMThread::execute(&op); WB_END WB_ENTRY(jint, WB_DeoptimizeMethod(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); MutexLockerEx mu(Compile_lock); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); int result = 0; nmethod* code = mh->code(); if (code != NULL) { code->mark_for_deoptimization(); ++result; } result += CodeCache::mark_for_deoptimization(mh()); if (result > 0) { VM_Deoptimize op; VMThread::execute(&op); } return result; WB_END WB_ENTRY(jboolean, WB_IsMethodCompiled(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); MutexLockerEx mu(Compile_lock); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); nmethod* code = mh->code(); if (code == NULL) { return JNI_FALSE; } return (code->is_alive() && !code->is_marked_for_deoptimization()); WB_END WB_ENTRY(jboolean, WB_IsMethodCompilable(JNIEnv* env, jobject o, jobject method, jint comp_level)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); MutexLockerEx mu(Compile_lock); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); return CompilationPolicy::can_be_compiled(mh, comp_level); WB_END WB_ENTRY(jboolean, WB_IsMethodQueuedForCompilation(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); MutexLockerEx mu(Compile_lock); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); return mh->queued_for_compilation(); WB_END WB_ENTRY(jint, WB_GetMethodCompilationLevel(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); nmethod* code = mh->code(); return (code != NULL ? code->comp_level() : CompLevel_none); WB_END WB_ENTRY(void, WB_MakeMethodNotCompilable(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); mh->set_not_compilable(); WB_END WB_ENTRY(jboolean, WB_TestSetDontInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); bool result = mh->dont_inline(); mh->set_dont_inline(value == JNI_TRUE); return result; WB_END WB_ENTRY(jint, WB_GetCompileQueuesSize(JNIEnv* env, jobject o)) return CompileBroker::queue_size(CompLevel_full_optimization) /* C2 */ + CompileBroker::queue_size(CompLevel_full_profile) /* C1 */; WB_END WB_ENTRY(jboolean, WB_TestSetForceInlineMethod(JNIEnv* env, jobject o, jobject method, jboolean value)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); bool result = mh->force_inline(); mh->set_force_inline(value == JNI_TRUE); return result; WB_END WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobject method, jint comp_level)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); nmethod* nm = CompileBroker::compile_method(mh, InvocationEntryBci, comp_level, mh, mh->invocation_count(), "WhiteBox", THREAD); MutexLockerEx mu(Compile_lock); return (mh->queued_for_compilation() || nm != NULL); WB_END WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); MutexLockerEx mu(Compile_lock); MethodData* mdo = mh->method_data(); if (mdo != NULL) { mdo->init(); ResourceMark rm; int arg_count = mdo->method()->size_of_parameters(); for (int i = 0; i < arg_count; i++) { mdo->set_arg_modified(i, 0); } } mh->backedge_counter()->init(); mh->invocation_counter()->init(); mh->set_interpreter_invocation_count(0); mh->set_interpreter_throwout_count(0); mh->clear_not_c1_compilable(); mh->clear_not_c2_compilable(); mh->clear_not_c2_osr_compilable(); NOT_PRODUCT(mh->set_compiled_invocation_count(0)); #ifdef TIERED mh->set_rate(0.0F); mh->set_prev_event_count(0); mh->set_prev_time(0); #endif WB_END WB_ENTRY(jboolean, WB_IsInStringTable(JNIEnv* env, jobject o, jstring javaString)) ResourceMark rm(THREAD); int len; jchar* name = java_lang_String::as_unicode_string(JNIHandles::resolve(javaString), len); oop found_string = StringTable::the_table()->lookup(name, len); if (found_string == NULL) { return false; } return true; WB_END WB_ENTRY(void, WB_FullGC(JNIEnv* env, jobject o)) Universe::heap()->collector_policy()->set_should_clear_all_soft_refs(true); Universe::heap()->collect(GCCause::_last_ditch_collection); WB_END //Some convenience methods to deal with objects from java int WhiteBox::offset_for_field(const char* field_name, oop object, Symbol* signature_symbol) { assert(field_name != NULL && strlen(field_name) > 0, "Field name not valid"); Thread* THREAD = Thread::current(); //Get the class of our object Klass* arg_klass = object->klass(); //Turn it into an instance-klass InstanceKlass* ik = InstanceKlass::cast(arg_klass); //Create symbols to look for in the class TempNewSymbol name_symbol = SymbolTable::lookup(field_name, (int) strlen(field_name), THREAD); //To be filled in with an offset of the field we're looking for fieldDescriptor fd; Klass* res = ik->find_field(name_symbol, signature_symbol, &fd); if (res == NULL) { tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); fatal("Invalid layout of preloaded class"); } //fetch the field at the offset we've found int dest_offset = fd.offset(); return dest_offset; } const char* WhiteBox::lookup_jstring(const char* field_name, oop object) { int offset = offset_for_field(field_name, object, vmSymbols::string_signature()); oop string = object->obj_field(offset); if (string == NULL) { return NULL; } const char* ret = java_lang_String::as_utf8_string(string); return ret; } bool WhiteBox::lookup_bool(const char* field_name, oop object) { int offset = offset_for_field(field_name, object, vmSymbols::bool_signature()); bool ret = (object->bool_field(offset) == JNI_TRUE); return ret; } #define CC (char*) static JNINativeMethod methods[] = { {CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress }, {CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize }, {CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive }, {CC"parseCommandLine", CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", (void*) &WB_ParseCommandLine }, #if INCLUDE_ALL_GCS {CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark}, {CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous }, {CC"g1NumFreeRegions", CC"()J", (void*)&WB_G1NumFreeRegions }, {CC"g1RegionSize", CC"()I", (void*)&WB_G1RegionSize }, #endif // INCLUDE_ALL_GCS #ifdef INCLUDE_NMT {CC"NMTMalloc", CC"(J)J", (void*)&WB_NMTMalloc }, {CC"NMTFree", CC"(J)V", (void*)&WB_NMTFree }, {CC"NMTReserveMemory", CC"(J)J", (void*)&WB_NMTReserveMemory }, {CC"NMTCommitMemory", CC"(JJ)V", (void*)&WB_NMTCommitMemory }, {CC"NMTUncommitMemory", CC"(JJ)V", (void*)&WB_NMTUncommitMemory }, {CC"NMTReleaseMemory", CC"(JJ)V", (void*)&WB_NMTReleaseMemory }, {CC"NMTWaitForDataMerge", CC"()Z", (void*)&WB_NMTWaitForDataMerge}, #endif // INCLUDE_NMT {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, {CC"deoptimizeMethod", CC"(Ljava/lang/reflect/Method;)I", (void*)&WB_DeoptimizeMethod }, {CC"isMethodCompiled", CC"(Ljava/lang/reflect/Method;)Z", (void*)&WB_IsMethodCompiled }, {CC"isMethodCompilable", CC"(Ljava/lang/reflect/Method;I)Z", (void*)&WB_IsMethodCompilable}, {CC"isMethodQueuedForCompilation", CC"(Ljava/lang/reflect/Method;)Z", (void*)&WB_IsMethodQueuedForCompilation}, {CC"makeMethodNotCompilable", CC"(Ljava/lang/reflect/Method;)V", (void*)&WB_MakeMethodNotCompilable}, {CC"testSetDontInlineMethod", CC"(Ljava/lang/reflect/Method;Z)Z", (void*)&WB_TestSetDontInlineMethod}, {CC"getMethodCompilationLevel", CC"(Ljava/lang/reflect/Method;)I", (void*)&WB_GetMethodCompilationLevel}, {CC"getCompileQueuesSize", CC"()I", (void*)&WB_GetCompileQueuesSize}, {CC"testSetForceInlineMethod", CC"(Ljava/lang/reflect/Method;Z)Z", (void*)&WB_TestSetForceInlineMethod}, {CC"enqueueMethodForCompilation", CC"(Ljava/lang/reflect/Method;I)Z", (void*)&WB_EnqueueMethodForCompilation}, {CC"clearMethodState", CC"(Ljava/lang/reflect/Method;)V", (void*)&WB_ClearMethodState}, {CC"isInStringTable", CC"(Ljava/lang/String;)Z", (void*)&WB_IsInStringTable }, {CC"fullGC", CC"()V", (void*)&WB_FullGC }, }; #undef CC JVM_ENTRY(void, JVM_RegisterWhiteBoxMethods(JNIEnv* env, jclass wbclass)) { if (WhiteBoxAPI) { // Make sure that wbclass is loaded by the null classloader instanceKlassHandle ikh = instanceKlassHandle(JNIHandles::resolve(wbclass)->klass()); Handle loader(ikh->class_loader()); if (loader.is_null()) { ThreadToNativeFromVM ttnfv(thread); // can't be in VM when we call JNI jint result = env->RegisterNatives(wbclass, methods, sizeof(methods)/sizeof(methods[0])); if (result == 0) { WhiteBox::set_used(); } } } } JVM_END