--- old/src/share/vm/services/memoryManager.cpp 2019-01-09 18:53:59.677331986 +0000 +++ new/src/share/vm/services/memoryManager.cpp 2019-01-09 18:53:59.567331267 +0000 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2003, 2019, 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 @@ -49,13 +49,15 @@ (void)const_cast(_memory_mgr_obj = instanceOop(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; +int MemoryManager::add_pool(MemoryPool* pool) { + int index = _num_pools; + assert(index < MemoryManager::max_num_pools, "_num_pools exceeds the max"); + if (index < MemoryManager::max_num_pools) { + _pools[index] = pool; _num_pools++; } pool->add_manager(this); + return index; } MemoryManager* MemoryManager::get_code_cache_memory_manager() { @@ -217,6 +219,15 @@ delete _current_gc_stat; } +void GCMemoryManager::add_pool(MemoryPool* pool) { + add_pool(pool, true); +} + +void GCMemoryManager::add_pool(MemoryPool* pool, bool always_affected_by_gc) { + int index = MemoryManager::add_pool(pool); + _pool_always_affected_by_gc[index] = always_affected_by_gc; +} + void GCMemoryManager::initialize_gc_stat_info() { assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools"); _last_gc_stat = new(ResourceObj::C_HEAP, mtGC) GCStatInfo(MemoryService::num_memory_pools()); @@ -266,7 +277,8 @@ void GCMemoryManager::gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime, bool recordGCEndTime, bool countCollection, - GCCause::Cause cause) { + GCCause::Cause cause, + bool allMemoryPoolsAffected) { if (recordAccumulatedGCTime) { _accumulated_timer.stop(); } @@ -304,8 +316,11 @@ MemoryUsage usage = pool->get_memory_usage(); // Compare with GC usage threshold - pool->set_last_collection_usage(usage); - LowMemoryDetector::detect_after_gc_memory(pool); + if (allMemoryPoolsAffected || pool_always_affected_by_gc(i)) { + // Compare with GC usage threshold + pool->set_last_collection_usage(usage); + LowMemoryDetector::detect_after_gc_memory(pool); + } } }