1 /* 2 * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "gc/serial/defNewGeneration.inline.hpp" 27 #include "gc/serial/serialHeap.hpp" 28 #include "gc/serial/tenuredGeneration.inline.hpp" 29 #include "gc/shared/genMemoryPools.hpp" 30 #include "memory/universe.hpp" 31 #include "services/memoryManager.hpp" 32 33 SerialHeap* SerialHeap::heap() { 34 return named_heap<SerialHeap>(CollectedHeap::Serial); 35 } 36 37 SerialHeap::SerialHeap() : 38 GenCollectedHeap(Generation::DefNew, 39 Generation::MarkSweepCompact, 40 "Copy:MSC"), 41 _eden_pool(NULL), 42 _survivor_pool(NULL), 43 _old_pool(NULL) { 44 _young_manager = new GCMemoryManager("Copy", "end of minor GC"); 45 _old_manager = new GCMemoryManager("MarkSweepCompact", "end of major GC"); 46 } 47 48 void SerialHeap::initialize_serviceability() { 49 50 DefNewGeneration* young = young_gen(); 51 52 // Add a memory pool for each space and young gen doesn't 53 // support low memory detection as it is expected to get filled up. 54 _eden_pool = new ContiguousSpacePool(young->eden(), 55 "Eden Space", 56 young->max_eden_size(), 57 false /* support_usage_threshold */); 58 _survivor_pool = new SurvivorContiguousSpacePool(young, 59 "Survivor Space", 60 young->max_survivor_size(), 61 false /* support_usage_threshold */); 62 TenuredGeneration* old = old_gen(); 63 _old_pool = new GenerationPool(old, "Tenured Gen", true); 64 65 _young_manager->add_pool(_eden_pool); 66 _young_manager->add_pool(_survivor_pool); 67 young->set_gc_manager(_young_manager); 68 69 _old_manager->add_pool(_eden_pool); 70 _old_manager->add_pool(_survivor_pool); 71 _old_manager->add_pool(_old_pool); 72 old->set_gc_manager(_old_manager); 73 74 } 75 76 GrowableArray<GCMemoryManager*> SerialHeap::memory_managers() { 77 GrowableArray<GCMemoryManager*> memory_managers(2); 78 memory_managers.append(_young_manager); 79 memory_managers.append(_old_manager); 80 return memory_managers; 81 } 82 83 GrowableArray<MemoryPool*> SerialHeap::memory_pools() { 84 GrowableArray<MemoryPool*> memory_pools(3); 85 memory_pools.append(_eden_pool); 86 memory_pools.append(_survivor_pool); 87 memory_pools.append(_old_pool); 88 return memory_pools; 89 } 90 91 // No workGang for SerialHeap, work serially with thread 0. 92 void SerialHeap::run_task(AbstractGangTask* task) { 93 task->work(0); 94 }