1 /* 2 * Copyright (c) 2017, 2018, 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 #include "precompiled.hpp" 25 #include "gc/shared/generationCounters.hpp" 26 #include "gc/shared/hSpaceCounters.hpp" 27 #include "gc/z/zCollectedHeap.hpp" 28 #include "gc/z/zHeap.inline.hpp" 29 #include "gc/z/zServiceability.hpp" 30 #include "memory/metaspaceCounters.hpp" 31 #include "runtime/perfData.hpp" 32 33 class ZOldGenerationCounters : public GenerationCounters { 34 public: 35 ZOldGenerationCounters(const char* name, size_t min_capacity, size_t max_capacity) : 36 // The "1, 1" parameters are for the n-th generation (=1) with 1 space. 37 GenerationCounters(name, 38 1 /* ordinal */, 39 1 /* spaces */, 40 min_capacity /* min_capacity */, 41 max_capacity /* max_capacity */, 42 min_capacity /* curr_capacity */) {} 43 44 virtual void update_all() { 45 size_t committed = ZHeap::heap()->capacity(); 46 _current_size->set_value(committed); 47 } 48 }; 49 50 // Class to expose perf counters used by jstat. 51 class ZServiceabilityCounters : public CHeapObj<mtGC> { 52 private: 53 ZOldGenerationCounters _old_collection_counters; 54 HSpaceCounters _old_space_counters; 55 56 public: 57 ZServiceabilityCounters(size_t min_capacity, size_t max_capacity); 58 59 void update_sizes(); 60 }; 61 62 ZServiceabilityCounters::ZServiceabilityCounters(size_t min_capacity, size_t max_capacity) : 63 // generation.1 64 _old_collection_counters("old", 65 min_capacity, 66 max_capacity), 67 // generation.1.space.0 68 _old_space_counters(_old_collection_counters.name_space(), 69 "space", 70 0 /* ordinal */, 71 max_capacity /* max_capacity */, 72 min_capacity /* init_capacity */) {} 73 74 void ZServiceabilityCounters::update_sizes() { 75 if (UsePerfData) { 76 size_t capacity = ZHeap::heap()->capacity(); 77 size_t used = MIN2(ZHeap::heap()->used(), capacity); 78 79 _old_space_counters.update_capacity(capacity); 80 _old_space_counters.update_used(used); 81 82 _old_collection_counters.update_all(); 83 84 MetaspaceCounters::update_performance_counters(); 85 CompressedClassSpaceCounters::update_performance_counters(); 86 } 87 } 88 89 ZServiceabilityMemoryPool::ZServiceabilityMemoryPool(size_t min_capacity, size_t max_capacity) : 90 CollectedMemoryPool("ZHeap", 91 min_capacity, 92 max_capacity, 93 true /* support_usage_threshold */) {} 94 95 size_t ZServiceabilityMemoryPool::used_in_bytes() { 96 return ZHeap::heap()->used(); 97 } 98 99 MemoryUsage ZServiceabilityMemoryPool::get_memory_usage() { 100 const size_t committed = ZHeap::heap()->capacity(); 101 const size_t used = MIN2(ZHeap::heap()->used(), committed); 102 103 return MemoryUsage(initial_size(), used, committed, max_size()); 104 } 105 106 ZServiceabilityMemoryManager::ZServiceabilityMemoryManager(ZServiceabilityMemoryPool* pool) 107 : GCMemoryManager("ZGC", "end of major GC") { 108 add_pool(pool); 109 } 110 111 ZServiceability::ZServiceability(size_t min_capacity, size_t max_capacity) : 112 _min_capacity(min_capacity), 113 _max_capacity(max_capacity), 114 _memory_pool(_min_capacity, _max_capacity), 115 _memory_manager(&_memory_pool), 116 _counters(NULL) {} 117 118 void ZServiceability::initialize() { 119 _counters = new ZServiceabilityCounters(_min_capacity, _max_capacity); 120 } 121 122 MemoryPool* ZServiceability::memory_pool() { 123 return &_memory_pool; 124 } 125 126 GCMemoryManager* ZServiceability::memory_manager() { 127 return &_memory_manager; 128 } 129 130 ZServiceabilityCounters* ZServiceability::counters() { 131 return _counters; 132 } 133 134 ZServiceabilityMemoryUsageTracker::~ZServiceabilityMemoryUsageTracker() { 135 MemoryService::track_memory_usage(); 136 } 137 138 ZServiceabilityManagerStatsTracer::ZServiceabilityManagerStatsTracer(bool is_gc_begin, bool is_gc_end) : 139 _stats(ZHeap::heap()->serviceability_memory_manager(), 140 ZCollectedHeap::heap()->gc_cause() /* cause */, 141 is_gc_begin /* recordGCBeginTime */, 142 is_gc_begin /* recordPreGCUsage */, 143 true /* recordPeakUsage */, 144 is_gc_end /* recordPostGCusage */, 145 true /* recordAccumulatedGCTime */, 146 is_gc_end /* recordGCEndTime */, 147 is_gc_end /* countCollection */) {} 148 149 ZServiceabilityCountersTracer::ZServiceabilityCountersTracer() { 150 // Nothing to trace with TraceCollectorStats, since ZGC has 151 // neither a young collector or a full collector. 152 } 153 154 ZServiceabilityCountersTracer::~ZServiceabilityCountersTracer() { 155 ZHeap::heap()->serviceability_counters()->update_sizes(); 156 }