Mercurial > hg > graal-compiler
view src/share/vm/prims/whitebox.cpp @ 8368:99a71b8c1c5d
removed unused code
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 19 Mar 2013 14:05:40 +0100 |
parents | 12e01444ca2d |
children | ede380e13960 |
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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" 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 // Keep track of the 3 allocations in NMTAllocTest so we can free them later // on and verify that they're not visible anymore static void* nmtMtTest1 = NULL, *nmtMtTest2 = NULL, *nmtMtTest3 = NULL; // Alloc memory using the test memory type so that we can use that to see if // NMT picks it up correctly WB_ENTRY(jboolean, WB_NMTAllocTest(JNIEnv* env)) void *mem; if (!MemTracker::is_on() || MemTracker::shutdown_in_progress()) { return false; } // Allocate 2 * 128k + 256k + 1024k and free the 1024k one to make sure we track // everything correctly. Total should be 512k held alive. nmtMtTest1 = os::malloc(128 * 1024, mtTest); mem = os::malloc(1024 * 1024, mtTest); nmtMtTest2 = os::malloc(256 * 1024, mtTest); os::free(mem, mtTest); nmtMtTest3 = os::malloc(128 * 1024, mtTest); return true; WB_END // Free the memory allocated by NMTAllocTest WB_ENTRY(jboolean, WB_NMTFreeTestMemory(JNIEnv* env)) if (nmtMtTest1 == NULL || nmtMtTest2 == NULL || nmtMtTest3 == NULL) { return false; } os::free(nmtMtTest1, mtTest); nmtMtTest1 = NULL; os::free(nmtMtTest2, mtTest); nmtMtTest2 = NULL; os::free(nmtMtTest3, mtTest); nmtMtTest3 = NULL; return true; 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)) jmethodID jmid = reflected_method_to_jmid(thread, env, method); MutexLockerEx mu(Compile_lock); methodHandle mh(THREAD, Method::checked_resolve_jmethod_id(jmid)); return !mh->is_not_compilable(); 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_SetDontInlineMethod(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 //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"NMTAllocTest", CC"()Z", (void*)&WB_NMTAllocTest }, {CC"NMTFreeTestMemory", CC"()Z", (void*)&WB_NMTFreeTestMemory }, {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;)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"setDontInlineMethod", CC"(Ljava/lang/reflect/Method;Z)Z", (void*)&WB_SetDontInlineMethod}, {CC"getMethodCompilationLevel", CC"(Ljava/lang/reflect/Method;)I", (void*)&WB_GetMethodCompilationLevel}, {CC"getCompileQueuesSize", CC"()I", (void*)&WB_GetCompileQueuesSize}, }; #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