1 /* 2 * Copyright (c) 2017, 2019, 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 ZGenerationCounters : public GenerationCounters { 34 public: 35 ZGenerationCounters(const char* name, int ordinal, int spaces, 36 size_t min_capacity, size_t max_capacity, size_t curr_capacity) : 37 GenerationCounters(name, ordinal, spaces, 38 min_capacity, max_capacity, curr_capacity) {} 39 40 void update_capacity(size_t capacity) { 41 _current_size->set_value(capacity); 42 } 43 }; 44 45 // Class to expose perf counters used by jstat. 46 class ZServiceabilityCounters : public CHeapObj<mtGC> { 47 private: 48 ZGenerationCounters _generation_counters; 49 HSpaceCounters _space_counters; 50 CollectorCounters _collector_counters; 51 52 public: 53 ZServiceabilityCounters(size_t min_capacity, size_t max_capacity); 54 55 CollectorCounters* collector_counters(); 56 57 void update_sizes(); 58 }; 59 60 ZServiceabilityCounters::ZServiceabilityCounters(size_t min_capacity, size_t max_capacity) : 61 // generation.1 62 _generation_counters("old" /* name */, 63 1 /* ordinal */, 64 1 /* spaces */, 65 min_capacity /* min_capacity */, 66 max_capacity /* max_capacity */, 67 min_capacity /* curr_capacity */), 68 // generation.1.space.0 69 _space_counters(_generation_counters.name_space(), 70 "space" /* name */, 71 0 /* ordinal */, 72 max_capacity /* max_capacity */, 73 min_capacity /* init_capacity */), 74 // gc.collector.2 75 _collector_counters("Z concurrent cycle pauses" /* name */, 76 2 /* ordinal */) {} 77 78 CollectorCounters* ZServiceabilityCounters::collector_counters() { 79 return &_collector_counters; 80 } 81 82 void ZServiceabilityCounters::update_sizes() { 83 if (UsePerfData) { 84 const size_t capacity = ZHeap::heap()->capacity(); 85 const size_t used = MIN2(ZHeap::heap()->used(), capacity); 86 87 _generation_counters.update_capacity(capacity); 88 _space_counters.update_capacity(capacity); 89 _space_counters.update_used(used); 90 91 MetaspaceCounters::update_performance_counters(); 92 CompressedClassSpaceCounters::update_performance_counters(); 93 } 94 } 95 96 ZServiceabilityMemoryPool::ZServiceabilityMemoryPool(size_t min_capacity, size_t max_capacity) : 97 CollectedMemoryPool("ZHeap", 98 min_capacity, 99 max_capacity, 100 true /* support_usage_threshold */) {} 101 102 size_t ZServiceabilityMemoryPool::used_in_bytes() { 103 return ZHeap::heap()->used(); 104 } 105 106 MemoryUsage ZServiceabilityMemoryPool::get_memory_usage() { 107 const size_t committed = ZHeap::heap()->capacity(); 108 const size_t used = MIN2(ZHeap::heap()->used(), committed); 109 110 return MemoryUsage(initial_size(), used, committed, max_size()); 111 } 112 113 ZServiceabilityMemoryManager::ZServiceabilityMemoryManager(ZServiceabilityMemoryPool* pool) 114 : GCMemoryManager("ZGC", "end of major GC") { 115 add_pool(pool); 116 } 117 118 ZServiceability::ZServiceability(size_t min_capacity, size_t max_capacity) : 119 _min_capacity(min_capacity), 120 _max_capacity(max_capacity), 121 _memory_pool(_min_capacity, _max_capacity), 122 _memory_manager(&_memory_pool), 123 _counters(NULL) {} 124 125 void ZServiceability::initialize() { 126 _counters = new ZServiceabilityCounters(_min_capacity, _max_capacity); 127 } 128 129 MemoryPool* ZServiceability::memory_pool() { 130 return &_memory_pool; 131 } 132 133 GCMemoryManager* ZServiceability::memory_manager() { 134 return &_memory_manager; 135 } 136 137 ZServiceabilityCounters* ZServiceability::counters() { 138 return _counters; 139 } 140 141 ZServiceabilityMemoryUsageTracker::~ZServiceabilityMemoryUsageTracker() { 142 MemoryService::track_memory_usage(); 143 } 144 145 ZServiceabilityManagerStatsTracer::ZServiceabilityManagerStatsTracer(bool is_gc_begin, bool is_gc_end) : 146 _stats(ZHeap::heap()->serviceability_memory_manager(), 147 ZCollectedHeap::heap()->gc_cause() /* cause */, 148 true /* allMemoryPoolsAffected */, 149 is_gc_begin /* recordGCBeginTime */, 150 is_gc_begin /* recordPreGCUsage */, 151 true /* recordPeakUsage */, 152 is_gc_end /* recordPostGCusage */, 153 true /* recordAccumulatedGCTime */, 154 is_gc_end /* recordGCEndTime */, 155 is_gc_end /* countCollection */) {} 156 157 ZServiceabilityCountersTracer::ZServiceabilityCountersTracer() : 158 _stats(ZHeap::heap()->serviceability_counters()->collector_counters()) {} 159 160 ZServiceabilityCountersTracer::~ZServiceabilityCountersTracer() { 161 ZHeap::heap()->serviceability_counters()->update_sizes(); 162 }