duke@435: /* hseigel@5784: * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * trims@1907: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA trims@1907: * or visit www.oracle.com if you need additional information or have any trims@1907: * questions. duke@435: * duke@435: */ duke@435: stefank@2314: #include "precompiled.hpp" stefank@2314: #include "classfile/systemDictionary.hpp" stefank@2314: #include "classfile/vmSymbols.hpp" ehelin@5312: #include "memory/metaspace.hpp" stefank@2314: #include "oops/oop.inline.hpp" stefank@2314: #include "runtime/handles.inline.hpp" stefank@2314: #include "runtime/javaCalls.hpp" stefank@2314: #include "services/lowMemoryDetector.hpp" stefank@2314: #include "services/management.hpp" stefank@2314: #include "services/memoryManager.hpp" stefank@2314: #include "services/memoryPool.hpp" jprovino@4542: #include "utilities/macros.hpp" ehelin@5312: #include "utilities/globalDefinitions.hpp" duke@435: duke@435: MemoryPool::MemoryPool(const char* name, duke@435: PoolType type, duke@435: size_t init_size, duke@435: size_t max_size, duke@435: bool support_usage_threshold, duke@435: bool support_gc_threshold) { duke@435: _name = name; duke@435: _initial_size = init_size; duke@435: _max_size = max_size; hseigel@5784: (void)const_cast(_memory_pool_obj = NULL); duke@435: _available_for_allocation = true; duke@435: _num_managers = 0; duke@435: _type = type; duke@435: duke@435: // initialize the max and init size of collection usage duke@435: _after_gc_usage = MemoryUsage(_initial_size, 0, 0, _max_size); duke@435: duke@435: _usage_sensor = NULL; duke@435: _gc_usage_sensor = NULL; duke@435: // usage threshold supports both high and low threshold duke@435: _usage_threshold = new ThresholdSupport(support_usage_threshold, support_usage_threshold); duke@435: // gc usage threshold supports only high threshold duke@435: _gc_usage_threshold = new ThresholdSupport(support_gc_threshold, support_gc_threshold); duke@435: } duke@435: duke@435: void MemoryPool::add_manager(MemoryManager* mgr) { duke@435: assert(_num_managers < MemoryPool::max_num_managers, "_num_managers exceeds the max"); duke@435: if (_num_managers < MemoryPool::max_num_managers) { duke@435: _managers[_num_managers] = mgr; duke@435: _num_managers++; duke@435: } duke@435: } duke@435: duke@435: duke@435: // Returns an instanceHandle of a MemoryPool object. duke@435: // It creates a MemoryPool instance when the first time duke@435: // this function is called. duke@435: instanceOop MemoryPool::get_memory_pool_instance(TRAPS) { duke@435: // Must do an acquire so as to force ordering of subsequent duke@435: // loads from anything _memory_pool_obj points to or implies. duke@435: instanceOop pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); duke@435: if (pool_obj == NULL) { duke@435: // It's ok for more than one thread to execute the code up to the locked region. duke@435: // Extra pool instances will just be gc'ed. coleenp@4037: Klass* k = Management::sun_management_ManagementFactory_klass(CHECK_NULL); duke@435: instanceKlassHandle ik(THREAD, k); duke@435: duke@435: Handle pool_name = java_lang_String::create_from_str(_name, CHECK_NULL); duke@435: jlong usage_threshold_value = (_usage_threshold->is_high_threshold_supported() ? 0 : -1L); duke@435: jlong gc_usage_threshold_value = (_gc_usage_threshold->is_high_threshold_supported() ? 0 : -1L); duke@435: duke@435: JavaValue result(T_OBJECT); duke@435: JavaCallArguments args; duke@435: args.push_oop(pool_name); // Argument 1 duke@435: args.push_int((int) is_heap()); // Argument 2 duke@435: coleenp@2497: Symbol* method_name = vmSymbols::createMemoryPool_name(); coleenp@2497: Symbol* signature = vmSymbols::createMemoryPool_signature(); duke@435: duke@435: args.push_long(usage_threshold_value); // Argument 3 duke@435: args.push_long(gc_usage_threshold_value); // Argument 4 duke@435: duke@435: JavaCalls::call_static(&result, duke@435: ik, duke@435: method_name, duke@435: signature, duke@435: &args, duke@435: CHECK_NULL); duke@435: duke@435: instanceOop p = (instanceOop) result.get_jobject(); duke@435: instanceHandle pool(THREAD, p); duke@435: duke@435: { duke@435: // Get lock since another thread may have create the instance duke@435: MutexLocker ml(Management_lock); duke@435: duke@435: // Check if another thread has created the pool. We reload duke@435: // _memory_pool_obj here because some other thread may have duke@435: // initialized it while we were executing the code before the lock. duke@435: // duke@435: // The lock has done an acquire, so the load can't float above it, duke@435: // but we need to do a load_acquire as above. duke@435: pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); duke@435: if (pool_obj != NULL) { duke@435: return pool_obj; duke@435: } duke@435: duke@435: // Get the address of the object we created via call_special. duke@435: pool_obj = pool(); duke@435: duke@435: // Use store barrier to make sure the memory accesses associated duke@435: // with creating the pool are visible before publishing its address. duke@435: // The unlock will publish the store to _memory_pool_obj because duke@435: // it does a release first. duke@435: OrderAccess::release_store_ptr(&_memory_pool_obj, pool_obj); duke@435: } duke@435: } duke@435: duke@435: return pool_obj; duke@435: } duke@435: duke@435: inline static size_t get_max_value(size_t val1, size_t val2) { duke@435: return (val1 > val2 ? val1 : val2); duke@435: } duke@435: duke@435: void MemoryPool::record_peak_memory_usage() { duke@435: // Caller in JDK is responsible for synchronization - duke@435: // acquire the lock for this memory pool before calling VM duke@435: MemoryUsage usage = get_memory_usage(); duke@435: size_t peak_used = get_max_value(usage.used(), _peak_usage.used()); duke@435: size_t peak_committed = get_max_value(usage.committed(), _peak_usage.committed()); duke@435: size_t peak_max_size = get_max_value(usage.max_size(), _peak_usage.max_size()); duke@435: duke@435: _peak_usage = MemoryUsage(initial_size(), peak_used, peak_committed, peak_max_size); duke@435: } duke@435: duke@435: static void set_sensor_obj_at(SensorInfo** sensor_ptr, instanceHandle sh) { duke@435: assert(*sensor_ptr == NULL, "Should be called only once"); duke@435: SensorInfo* sensor = new SensorInfo(); duke@435: sensor->set_sensor(sh()); duke@435: *sensor_ptr = sensor; duke@435: } duke@435: duke@435: void MemoryPool::set_usage_sensor_obj(instanceHandle sh) { duke@435: set_sensor_obj_at(&_usage_sensor, sh); duke@435: } duke@435: duke@435: void MemoryPool::set_gc_usage_sensor_obj(instanceHandle sh) { duke@435: set_sensor_obj_at(&_gc_usage_sensor, sh); duke@435: } duke@435: duke@435: void MemoryPool::oops_do(OopClosure* f) { duke@435: f->do_oop((oop*) &_memory_pool_obj); duke@435: if (_usage_sensor != NULL) { duke@435: _usage_sensor->oops_do(f); duke@435: } duke@435: if (_gc_usage_sensor != NULL) { duke@435: _gc_usage_sensor->oops_do(f); duke@435: } duke@435: } duke@435: duke@435: ContiguousSpacePool::ContiguousSpacePool(ContiguousSpace* space, duke@435: const char* name, duke@435: PoolType type, duke@435: size_t max_size, duke@435: bool support_usage_threshold) : duke@435: CollectedMemoryPool(name, type, space->capacity(), max_size, duke@435: support_usage_threshold), _space(space) { duke@435: } duke@435: duke@435: MemoryUsage ContiguousSpacePool::get_memory_usage() { duke@435: size_t maxSize = (available_for_allocation() ? max_size() : 0); duke@435: size_t used = used_in_bytes(); duke@435: size_t committed = _space->capacity(); duke@435: duke@435: return MemoryUsage(initial_size(), used, committed, maxSize); duke@435: } duke@435: duke@435: SurvivorContiguousSpacePool::SurvivorContiguousSpacePool(DefNewGeneration* gen, duke@435: const char* name, duke@435: PoolType type, duke@435: size_t max_size, duke@435: bool support_usage_threshold) : duke@435: CollectedMemoryPool(name, type, gen->from()->capacity(), max_size, duke@435: support_usage_threshold), _gen(gen) { duke@435: } duke@435: duke@435: MemoryUsage SurvivorContiguousSpacePool::get_memory_usage() { duke@435: size_t maxSize = (available_for_allocation() ? max_size() : 0); duke@435: size_t used = used_in_bytes(); duke@435: size_t committed = committed_in_bytes(); duke@435: duke@435: return MemoryUsage(initial_size(), used, committed, maxSize); duke@435: } duke@435: jprovino@4542: #if INCLUDE_ALL_GCS duke@435: CompactibleFreeListSpacePool::CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, duke@435: const char* name, duke@435: PoolType type, duke@435: size_t max_size, duke@435: bool support_usage_threshold) : duke@435: CollectedMemoryPool(name, type, space->capacity(), max_size, duke@435: support_usage_threshold), _space(space) { duke@435: } duke@435: duke@435: MemoryUsage CompactibleFreeListSpacePool::get_memory_usage() { duke@435: size_t maxSize = (available_for_allocation() ? max_size() : 0); duke@435: size_t used = used_in_bytes(); duke@435: size_t committed = _space->capacity(); duke@435: duke@435: return MemoryUsage(initial_size(), used, committed, maxSize); duke@435: } jprovino@4542: #endif // INCLUDE_ALL_GCS duke@435: duke@435: GenerationPool::GenerationPool(Generation* gen, duke@435: const char* name, duke@435: PoolType type, duke@435: bool support_usage_threshold) : duke@435: CollectedMemoryPool(name, type, gen->capacity(), gen->max_capacity(), duke@435: support_usage_threshold), _gen(gen) { duke@435: } duke@435: duke@435: MemoryUsage GenerationPool::get_memory_usage() { duke@435: size_t used = used_in_bytes(); duke@435: size_t committed = _gen->capacity(); duke@435: size_t maxSize = (available_for_allocation() ? max_size() : 0); duke@435: duke@435: return MemoryUsage(initial_size(), used, committed, maxSize); duke@435: } duke@435: duke@435: CodeHeapPool::CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold) : duke@435: MemoryPool(name, NonHeap, codeHeap->capacity(), codeHeap->max_capacity(), duke@435: support_usage_threshold, false), _codeHeap(codeHeap) { duke@435: } duke@435: duke@435: MemoryUsage CodeHeapPool::get_memory_usage() { duke@435: size_t used = used_in_bytes(); duke@435: size_t committed = _codeHeap->capacity(); duke@435: size_t maxSize = (available_for_allocation() ? max_size() : 0); duke@435: duke@435: return MemoryUsage(initial_size(), used, committed, maxSize); duke@435: } ehelin@5312: ehelin@5312: MetaspacePool::MetaspacePool() : ehelin@5716: MemoryPool("Metaspace", NonHeap, 0, calculate_max_size(), true, false) { } ehelin@5312: ehelin@5312: MemoryUsage MetaspacePool::get_memory_usage() { ehelin@5716: size_t committed = MetaspaceAux::committed_bytes(); ehelin@5312: return MemoryUsage(initial_size(), used_in_bytes(), committed, max_size()); ehelin@5312: } ehelin@5312: ehelin@5312: size_t MetaspacePool::used_in_bytes() { ehelin@5552: return MetaspaceAux::allocated_used_bytes(); ehelin@5312: } ehelin@5312: ehelin@5312: size_t MetaspacePool::calculate_max_size() const { ehelin@5716: return FLAG_IS_CMDLINE(MaxMetaspaceSize) ? MaxMetaspaceSize : ehelin@5716: MemoryUsage::undefined_size(); ehelin@5312: } ehelin@5312: ehelin@5312: CompressedKlassSpacePool::CompressedKlassSpacePool() : ehelin@5716: MemoryPool("Compressed Class Space", NonHeap, 0, CompressedClassSpaceSize, true, false) { } ehelin@5312: ehelin@5312: size_t CompressedKlassSpacePool::used_in_bytes() { ehelin@5312: return MetaspaceAux::allocated_used_bytes(Metaspace::ClassType); ehelin@5312: } ehelin@5312: ehelin@5312: MemoryUsage CompressedKlassSpacePool::get_memory_usage() { ehelin@5716: size_t committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); ehelin@5312: return MemoryUsage(initial_size(), used_in_bytes(), committed, max_size()); ehelin@5312: }