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, 33 Generation::DefNew, 34 Generation::MarkSweepCompact, 35 "Copy:MSC"), 36 _eden_pool(NULL), 37 _survivor_pool(NULL), 38 _old_pool(NULL) { 39 _young_manager = new GCMemoryManager("Copy", "end of minor GC"); 40 _old_manager = new GCMemoryManager("MarkSweepCompact", "end of major GC"); 41 } 42 43 void SerialHeap::initialize_serviceability() { 44 45 DefNewGeneration* young = (DefNewGeneration*) young_gen(); 46 47 // Add a memory pool for each space and young gen doesn't 48 // support low memory detection as it is expected to get filled up. 49 _eden_pool = new ContiguousSpacePool(young->eden(), 50 "Eden Space", 51 young->max_eden_size(), 52 false /* support_usage_threshold */); 53 _survivor_pool = new SurvivorContiguousSpacePool(young, 54 "Survivor Space", 55 young->max_survivor_size(), 56 false /* support_usage_threshold */); 57 Generation* old = old_gen(); 58 _old_pool = new GenerationPool(old, "Tenured Gen", true); 59 60 _young_manager->add_pool(_eden_pool); 61 _young_manager->add_pool(_survivor_pool); 62 young->set_gc_manager(_young_manager); 63 64 _old_manager->add_pool(_eden_pool); 65 _old_manager->add_pool(_survivor_pool); 66 _old_manager->add_pool(_old_pool); 67 old->set_gc_manager(_old_manager); 68 69 } 70 71 void SerialHeap::check_gen_kinds() { 72 assert(young_gen()->kind() == Generation::DefNew, 73 "Wrong youngest generation type"); 74 assert(old_gen()->kind() == Generation::MarkSweepCompact, 75 "Wrong generation kind"); 76 } 77 78 GrowableArray<GCMemoryManager*> SerialHeap::memory_managers() { 79 GrowableArray<GCMemoryManager*> memory_managers(2); 80 memory_managers.append(_young_manager); 81 memory_managers.append(_old_manager); 82 return memory_managers; 83 } 84 85 GrowableArray<MemoryPool*> SerialHeap::memory_pools() { 86 GrowableArray<MemoryPool*> memory_pools(3); 87 memory_pools.append(_eden_pool); 88 memory_pools.append(_survivor_pool); 89 memory_pools.append(_old_pool); 90 return memory_pools; 91 }