1 /* 2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #include "precompiled.hpp" 25 #include "gc/epsilon/epsilonMonitoringSupport.hpp" 26 #include "gc/epsilon/epsilonHeap.hpp" 27 #include "gc/shared/generationCounters.hpp" 28 #include "memory/allocation.hpp" 29 #include "memory/allocation.inline.hpp" 30 #include "memory/metaspaceCounters.hpp" 31 #include "memory/resourceArea.hpp" 32 #include "services/memoryService.hpp" 33 34 class EpsilonSpaceCounters: public CHeapObj<mtGC> { 35 friend class VMStructs; 36 37 private: 38 PerfVariable* _capacity; 39 PerfVariable* _used; 40 char* _name_space; 41 42 public: 43 EpsilonSpaceCounters(const char* name, 44 int ordinal, 45 size_t max_size, 46 size_t initial_capacity, 47 GenerationCounters* gc) { 48 if (UsePerfData) { 49 EXCEPTION_MARK; 50 ResourceMark rm; 51 52 const char* cns = PerfDataManager::name_space(gc->name_space(), "space", ordinal); 53 54 _name_space = NEW_C_HEAP_ARRAY(char, strlen(cns)+1, mtGC); 55 strcpy(_name_space, cns); 56 57 const char* cname = PerfDataManager::counter_name(_name_space, "name"); 58 PerfDataManager::create_string_constant(SUN_GC, cname, name, CHECK); 59 60 cname = PerfDataManager::counter_name(_name_space, "maxCapacity"); 61 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, (jlong)max_size, CHECK); 62 63 cname = PerfDataManager::counter_name(_name_space, "capacity"); 64 _capacity = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, initial_capacity, CHECK); 65 66 cname = PerfDataManager::counter_name(_name_space, "used"); 67 _used = PerfDataManager::create_variable(SUN_GC, cname, PerfData::U_Bytes, (jlong) 0, CHECK); 68 69 cname = PerfDataManager::counter_name(_name_space, "initCapacity"); 70 PerfDataManager::create_constant(SUN_GC, cname, PerfData::U_Bytes, initial_capacity, CHECK); 71 } 72 } 73 74 ~EpsilonSpaceCounters() { 75 if (_name_space != NULL) { 76 FREE_C_HEAP_ARRAY(char, _name_space); 77 } 78 } 79 80 inline void update_all(size_t capacity, size_t used) { 81 _capacity->set_value(capacity); 82 _used->set_value(used); 83 } 84 }; 85 86 class EpsilonGenerationCounters : public GenerationCounters { 87 private: 88 EpsilonHeap* _heap; 89 public: 90 EpsilonGenerationCounters(EpsilonHeap* heap) : 91 GenerationCounters("Heap", 1, 1, 0, heap->max_capacity(), heap->capacity()), 92 _heap(heap) 93 {}; 94 95 virtual void update_all() { 96 _current_size->set_value(_heap->capacity()); 97 } 98 }; 99 100 EpsilonMonitoringSupport::EpsilonMonitoringSupport(EpsilonHeap* heap) { 101 _heap_counters = new EpsilonGenerationCounters(heap); 102 _space_counters = new EpsilonSpaceCounters("Heap", 0, heap->max_capacity(), 0, _heap_counters); 103 } 104 105 void EpsilonMonitoringSupport::update_counters() { 106 MemoryService::track_memory_usage(); 107 108 if (UsePerfData) { 109 EpsilonHeap* heap = EpsilonHeap::heap(); 110 size_t used = heap->used(); 111 size_t capacity = heap->capacity(); 112 _heap_counters->update_all(); 113 _space_counters->update_all(capacity, used); 114 MetaspaceCounters::update_performance_counters(); 115 CompressedClassSpaceCounters::update_performance_counters(); 116 } 117 } 118