Mercurial > hg > icedtea7-forest > hotspot
view src/share/vm/prims/whitebox.cpp @ 6552:490b222d74de icedtea-2.7.0pre12
Merge jdk7u141-b02
author | andrew |
---|---|
date | Fri, 14 Jul 2017 00:56:19 +0100 |
parents | c5a85ccbea89 b86041bd7b99 |
children |
line wrap: on
line source
/* * Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "memory/universe.hpp" #include "oops/oop.inline.hpp" #include "code/codeCache.hpp" #include "classfile/symbolTable.hpp" #include "prims/whitebox.hpp" #include "prims/wbtestmethods/parserTests.hpp" #include "runtime/arguments.hpp" #include "runtime/interfaceSupport.hpp" #include "runtime/os.hpp" #include "utilities/debug.hpp" #ifndef SERIALGC #include "gc_implementation/g1/concurrentMark.hpp" #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" #include "gc_implementation/g1/heapRegionRemSet.hpp" #endif // !SERIALGC #include "services/memTracker.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 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) { return (jlong)Arguments::max_heap_for_compressed_oops(); } WB_END WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) { CollectorPolicy * p = Universe::heap()->collector_policy(); gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap " SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT, p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(), p->min_alignment(), p->max_alignment()); } WB_END #ifndef SERIALGC 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 // !SERIALGC // 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, !ExecMem); 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 WB_ENTRY(jboolean, WB_NMTIsDetailSupported(JNIEnv* env)) return MemTracker::tracking_level() == MemTracker::NMT_detail; WB_END 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 //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 klassOop 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; klassOop 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()); vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem 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 "parseCommandLine", CC "(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;", (void*) &WB_ParseCommandLine }, {CC"getCompressedOopsMaxHeapSize", CC"()J", (void*)&WB_GetCompressedOopsMaxHeapSize}, {CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes }, #ifndef SERIALGC {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 // !SERIALGC {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}, {CC"NMTIsDetailSupported",CC"()Z", (void*)&WB_NMTIsDetailSupported}, {CC"deoptimizeAll", CC"()V", (void*)&WB_DeoptimizeAll }, }; #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