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 "gc/shared/generationSpec.hpp" 30 #include "gc/shared/gcPolicyCounters.hpp" 31 #include "services/memoryManager.hpp" 32 33 SerialHeap::SerialHeap(const SerialSettings& settings) : 34 GenCollectedHeap(settings, 35 Generation::DefNew, 36 Generation::MarkSweepCompact), 37 _settings(settings), 38 _eden_pool(NULL), 39 _survivor_pool(NULL), 40 _old_pool(NULL) { 41 _young_manager = new GCMemoryManager("Copy", "end of minor GC"); 42 _old_manager = new GCMemoryManager("MarkSweepCompact", "end of major GC"); 43 } 44 45 void SerialHeap::initialize_serviceability() { 46 47 DefNewGeneration* young = (DefNewGeneration*) young_gen(); 48 49 // Add a memory pool for each space and young gen doesn't 50 // support low memory detection as it is expected to get filled up. 51 _eden_pool = new ContiguousSpacePool(young->eden(), 52 "Eden Space", 53 young->max_eden_size(), 54 false /* support_usage_threshold */); 55 _survivor_pool = new SurvivorContiguousSpacePool(young, 56 "Survivor Space", 57 young->max_survivor_size(), 58 false /* support_usage_threshold */); 59 Generation* old = old_gen(); 60 _old_pool = new GenerationPool(old, "Tenured Gen", true); 61 62 _young_manager->add_pool(_eden_pool); 63 _young_manager->add_pool(_survivor_pool); 64 young->set_gc_manager(_young_manager); 65 66 _old_manager->add_pool(_eden_pool); 67 _old_manager->add_pool(_survivor_pool); 68 _old_manager->add_pool(_old_pool); 69 old->set_gc_manager(_old_manager); 70 71 } 72 73 void SerialHeap::initialize_gc_policy_counters() { 74 initialize_gc_policy_counters_helper("Copy:MSC"); 75 } 76 77 void SerialHeap::check_gen_kinds() { 78 assert(young_gen()->kind() == Generation::DefNew, 79 "Wrong youngest generation type"); 80 assert(old_gen()->kind() == Generation::MarkSweepCompact, 81 "Wrong generation kind"); 82 } 83 84 GrowableArray<GCMemoryManager*> SerialHeap::memory_managers() { 85 GrowableArray<GCMemoryManager*> memory_managers(2); 86 memory_managers.append(_young_manager); 87 memory_managers.append(_old_manager); 88 return memory_managers; 89 } 90 91 GrowableArray<MemoryPool*> SerialHeap::memory_pools() { 92 GrowableArray<MemoryPool*> memory_pools(3); 93 memory_pools.append(_eden_pool); 94 memory_pools.append(_survivor_pool); 95 memory_pools.append(_old_pool); 96 return memory_pools; 97 }