1 /* 2 * Copyright (c) 2017, 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.hpp" 27 #include "gc/serial/serialHeap.hpp" 28 #include "gc/shared/genMemoryPools.hpp" 29 #include "services/memoryManager.hpp" 30 31 SerialHeap::SerialHeap(GenCollectorPolicy* policy) : 32 GenCollectedHeap(policy), _eden_pool(NULL), _survivor_pool(NULL), _old_pool(NULL) { 33 _young_mgr = new GCMemoryManager("Copy", "end of minor GC"); 34 _old_mgr = new GCMemoryManager("MarkSweepCompact", "end of major GC"); 35 } 36 37 jint SerialHeap::initialize() { 38 jint status = GenCollectedHeap::initialize(); 39 if (status != JNI_OK) return status; 40 41 DefNewGeneration* young = (DefNewGeneration*) young_gen(); 42 43 // Add a memory pool for each space and young gen doesn't 44 // support low memory detection as it is expected to get filled up. 45 _eden_pool = new ContiguousSpacePool(young->eden(), 46 "Eden Space", 47 young->max_eden_size(), 48 false /* support_usage_threshold */); 49 _survivor_pool = new SurvivorContiguousSpacePool(young, 50 "Survivor Space", 51 young->max_survivor_size(), 52 false /* support_usage_threshold */); 53 _old_pool = new GenerationPool(old_gen(), "Tenured Gen", true); 54 55 _young_mgr->add_pool(_eden_pool); 56 _young_mgr->add_pool(_survivor_pool); 57 58 _old_mgr->add_pool(_eden_pool); 59 _old_mgr->add_pool(_survivor_pool); 60 _old_mgr->add_pool(_old_pool); 61 62 return JNI_OK; 63 } 64 65 void SerialHeap::check_gen_kinds() { 66 assert(young_gen()->kind() == Generation::DefNew, 67 "Wrong youngest generation type"); 68 assert(old_gen()->kind() == Generation::MarkSweepCompact, 69 "Wrong generation kind"); 70 } 71 72 GrowableArray<GCMemoryManager*> SerialHeap::memory_managers() { 73 GrowableArray<GCMemoryManager*> memory_managers(2); 74 memory_managers.append(_young_mgr); 75 memory_managers.append(_old_mgr); 76 return memory_managers; 77 } 78 79 GrowableArray<MemoryPool*> SerialHeap::memory_pools() { 80 GrowableArray<MemoryPool*> memory_pools(3); 81 memory_pools.append(_eden_pool); 82 memory_pools.append(_survivor_pool); 83 memory_pools.append(_old_pool); 84 return memory_pools; 85 }