Mercurial > hg > graal-compiler
view src/share/vm/services/memoryManager.cpp @ 599:0ad1cb407fa1
6805427: adlc compiler may generate incorrect machnode emission code
Reviewed-by: kvn, twisti
author | never |
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date | Wed, 25 Feb 2009 10:53:14 -0800 |
parents | a61af66fc99e |
children | db0d5eba9d20 |
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/* * Copyright 2003-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ # include "incls/_precompiled.incl" # include "incls/_memoryManager.cpp.incl" HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char*, int, char*, int, size_t, size_t, size_t, size_t); HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, char*, int, char*, int, size_t, size_t, size_t, size_t); MemoryManager::MemoryManager() { _num_pools = 0; _memory_mgr_obj = NULL; } void MemoryManager::add_pool(MemoryPool* pool) { assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max"); if (_num_pools < MemoryManager::max_num_pools) { _pools[_num_pools] = pool; _num_pools++; } pool->add_manager(this); } MemoryManager* MemoryManager::get_code_cache_memory_manager() { return (MemoryManager*) new CodeCacheMemoryManager(); } GCMemoryManager* MemoryManager::get_copy_memory_manager() { return (GCMemoryManager*) new CopyMemoryManager(); } GCMemoryManager* MemoryManager::get_msc_memory_manager() { return (GCMemoryManager*) new MSCMemoryManager(); } GCMemoryManager* MemoryManager::get_parnew_memory_manager() { return (GCMemoryManager*) new ParNewMemoryManager(); } GCMemoryManager* MemoryManager::get_cms_memory_manager() { return (GCMemoryManager*) new CMSMemoryManager(); } GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() { return (GCMemoryManager*) new PSScavengeMemoryManager(); } GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() { return (GCMemoryManager*) new PSMarkSweepMemoryManager(); } instanceOop MemoryManager::get_memory_manager_instance(TRAPS) { // Must do an acquire so as to force ordering of subsequent // loads from anything _memory_mgr_obj points to or implies. instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); if (mgr_obj == NULL) { // It's ok for more than one thread to execute the code up to the locked region. // Extra manager instances will just be gc'ed. klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0); instanceKlassHandle ik(THREAD, k); Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0); JavaValue result(T_OBJECT); JavaCallArguments args; args.push_oop(mgr_name); // Argument 1 symbolHandle method_name; symbolHandle signature; if (is_gc_memory_manager()) { method_name = vmSymbolHandles::createGarbageCollector_name(); signature = vmSymbolHandles::createGarbageCollector_signature(); args.push_oop(Handle()); // Argument 2 (for future extension) } else { method_name = vmSymbolHandles::createMemoryManager_name(); signature = vmSymbolHandles::createMemoryManager_signature(); } JavaCalls::call_static(&result, ik, method_name, signature, &args, CHECK_0); instanceOop m = (instanceOop) result.get_jobject(); instanceHandle mgr(THREAD, m); { // Get lock before setting _memory_mgr_obj // since another thread may have created the instance MutexLocker ml(Management_lock); // Check if another thread has created the management object. We reload // _memory_mgr_obj here because some other thread may have initialized // it while we were executing the code before the lock. // // The lock has done an acquire, so the load can't float above it, but // we need to do a load_acquire as above. mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); if (mgr_obj != NULL) { return mgr_obj; } // Get the address of the object we created via call_special. mgr_obj = mgr(); // Use store barrier to make sure the memory accesses associated // with creating the management object are visible before publishing // its address. The unlock will publish the store to _memory_mgr_obj // because it does a release first. OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj); } } return mgr_obj; } void MemoryManager::oops_do(OopClosure* f) { f->do_oop((oop*) &_memory_mgr_obj); } GCStatInfo::GCStatInfo(int num_pools) { // initialize the arrays for memory usage _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); size_t len = num_pools * sizeof(MemoryUsage); memset(_before_gc_usage_array, 0, len); memset(_after_gc_usage_array, 0, len); _usage_array_size = num_pools; } GCStatInfo::~GCStatInfo() { FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array); FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array); } void GCStatInfo::copy_stat(GCStatInfo* stat) { set_index(stat->gc_index()); set_start_time(stat->start_time()); set_end_time(stat->end_time()); assert(_usage_array_size == stat->usage_array_size(), "Must have same array size"); for (int i = 0; i < _usage_array_size; i++) { set_before_gc_usage(i, stat->before_gc_usage_for_pool(i)); set_after_gc_usage(i, stat->after_gc_usage_for_pool(i)); } } void GCStatInfo::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) { MemoryUsage* gc_usage_array; if (before_gc) { gc_usage_array = _before_gc_usage_array; } else { gc_usage_array = _after_gc_usage_array; } gc_usage_array[pool_index] = usage; } GCMemoryManager::GCMemoryManager() : MemoryManager() { _num_collections = 0; _last_gc_stat = NULL; _num_gc_threads = 1; } GCMemoryManager::~GCMemoryManager() { delete _last_gc_stat; } void GCMemoryManager::initialize_gc_stat_info() { assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools"); _last_gc_stat = new GCStatInfo(MemoryService::num_memory_pools()); } void GCMemoryManager::gc_begin() { assert(_last_gc_stat != NULL, "Just checking"); _accumulated_timer.start(); _num_collections++; _last_gc_stat->set_index(_num_collections); _last_gc_stat->set_start_time(Management::timestamp()); // Keep memory usage of all memory pools for (int i = 0; i < MemoryService::num_memory_pools(); i++) { MemoryPool* pool = MemoryService::get_memory_pool(i); MemoryUsage usage = pool->get_memory_usage(); _last_gc_stat->set_before_gc_usage(i, usage); HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin, name(), strlen(name()), pool->name(), strlen(pool->name()), usage.init_size(), usage.used(), usage.committed(), usage.max_size()); } } void GCMemoryManager::gc_end() { _accumulated_timer.stop(); _last_gc_stat->set_end_time(Management::timestamp()); int i; // keep the last gc statistics for all memory pools for (i = 0; i < MemoryService::num_memory_pools(); i++) { MemoryPool* pool = MemoryService::get_memory_pool(i); MemoryUsage usage = pool->get_memory_usage(); HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end, name(), strlen(name()), pool->name(), strlen(pool->name()), usage.init_size(), usage.used(), usage.committed(), usage.max_size()); _last_gc_stat->set_after_gc_usage(i, usage); } // Set last collection usage of the memory pools managed by this collector for (i = 0; i < num_memory_pools(); i++) { MemoryPool* pool = get_memory_pool(i); MemoryUsage usage = pool->get_memory_usage(); // Compare with GC usage threshold pool->set_last_collection_usage(usage); LowMemoryDetector::detect_after_gc_memory(pool); } }