1 /* 2 * Copyright (c) 2017, 2019, Red Hat, Inc. 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 27 #include "jfr/jfrEvents.hpp" 28 #include "gc/shared/gcCause.hpp" 29 #include "gc/shared/gcTrace.hpp" 30 #include "gc/shared/gcWhen.hpp" 31 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp" 32 #include "gc/shenandoah/shenandoahMarkCompact.hpp" 33 #include "gc/shenandoah/shenandoahHeap.inline.hpp" 34 #include "gc/shenandoah/shenandoahHeuristics.hpp" 35 #include "gc/shenandoah/shenandoahUtils.hpp" 36 #include "utilities/debug.hpp" 37 38 ShenandoahPhaseTimings::Phase ShenandoahTimingsTracker::_current_phase = ShenandoahPhaseTimings::_invalid_phase; 39 40 ShenandoahGCSession::ShenandoahGCSession(GCCause::Cause cause) : 41 _heap(ShenandoahHeap::heap()), 42 _timer(_heap->gc_timer()), 43 _tracer(_heap->tracer()) { 44 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase"); 45 46 _heap->set_gc_cause(cause); 47 _timer->register_gc_start(); 48 _tracer->report_gc_start(cause, _timer->gc_start()); 49 _heap->trace_heap_before_gc(_tracer); 50 51 _heap->shenandoah_policy()->record_cycle_start(); 52 _heap->heuristics()->record_cycle_start(); 53 _trace_cycle.initialize(_heap->cycle_memory_manager(), cause, 54 /* allMemoryPoolsAffected */ true, 55 /* recordGCBeginTime = */ true, 56 /* recordPreGCUsage = */ true, 57 /* recordPeakUsage = */ true, 58 /* recordPostGCUsage = */ true, 59 /* recordAccumulatedGCTime = */ true, 60 /* recordGCEndTime = */ true, 61 /* countCollection = */ true 62 ); 63 } 64 65 ShenandoahGCSession::~ShenandoahGCSession() { 66 _heap->heuristics()->record_cycle_end(); 67 _timer->register_gc_end(); 68 _heap->trace_heap_after_gc(_tracer); 69 _tracer->report_gc_end(_timer->gc_end(), _timer->time_partitions()); 70 assert(!ShenandoahGCPhase::is_current_phase_valid(), "No current GC phase"); 71 _heap->set_gc_cause(GCCause::_no_gc); 72 } 73 74 ShenandoahGCPauseMark::ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_type type) : 75 _heap(ShenandoahHeap::heap()), _gc_id_mark(gc_id), _svc_gc_mark(type), _is_gc_active_mark() { 76 _trace_pause.initialize(_heap->stw_memory_manager(), _heap->gc_cause(), 77 /* allMemoryPoolsAffected */ true, 78 /* recordGCBeginTime = */ true, 79 /* recordPreGCUsage = */ false, 80 /* recordPeakUsage = */ false, 81 /* recordPostGCUsage = */ false, 82 /* recordAccumulatedGCTime = */ true, 83 /* recordGCEndTime = */ true, 84 /* countCollection = */ true 85 ); 86 } 87 88 ShenandoahPausePhase::ShenandoahPausePhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) : 89 ShenandoahTimingsTracker(phase), 90 _tracer(title, NULL, GCCause::_no_gc, log_heap_usage), 91 _timer(ShenandoahHeap::heap()->gc_timer()) { 92 _timer->register_gc_pause_start(title); 93 } 94 95 ShenandoahPausePhase::~ShenandoahPausePhase() { 96 _timer->register_gc_pause_end(); 97 } 98 99 ShenandoahConcurrentPhase::ShenandoahConcurrentPhase(const char* title, ShenandoahPhaseTimings::Phase phase, bool log_heap_usage) : 100 ShenandoahTimingsTracker(phase), 101 _tracer(title, NULL, GCCause::_no_gc, log_heap_usage), 102 _timer(ShenandoahHeap::heap()->gc_timer()) { 103 _timer->register_gc_concurrent_start(title); 104 } 105 106 ShenandoahConcurrentPhase::~ShenandoahConcurrentPhase() { 107 _timer->register_gc_concurrent_end(); 108 } 109 110 ShenandoahTimingsTracker::ShenandoahTimingsTracker(ShenandoahPhaseTimings::Phase phase) : 111 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) { 112 assert(!Thread::current()->is_Worker_thread() && 113 (Thread::current()->is_VM_thread() || 114 Thread::current()->is_ConcurrentGC_thread()), 115 "Must be set by these threads"); 116 _parent_phase = _current_phase; 117 _current_phase = phase; 118 _start = os::elapsedTime(); 119 } 120 121 ShenandoahTimingsTracker::~ShenandoahTimingsTracker() { 122 _timings->record_phase_time(_phase, os::elapsedTime() - _start); 123 _current_phase = _parent_phase; 124 } 125 126 bool ShenandoahTimingsTracker::is_current_phase_valid() { 127 return _current_phase < ShenandoahPhaseTimings::_num_phases; 128 } 129 130 ShenandoahGCPhase::ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase) : 131 ShenandoahTimingsTracker(phase), 132 _timer(ShenandoahHeap::heap()->gc_timer()) { 133 _timer->register_gc_phase_start(ShenandoahPhaseTimings::phase_name(phase), Ticks::now()); 134 } 135 136 ShenandoahGCPhase::~ShenandoahGCPhase() { 137 _timer->register_gc_phase_end(Ticks::now()); 138 } 139 140 ShenandoahGCWorkerPhase::ShenandoahGCWorkerPhase(const ShenandoahPhaseTimings::Phase phase) : 141 _timings(ShenandoahHeap::heap()->phase_timings()), _phase(phase) { 142 _timings->record_workers_start(_phase); 143 } 144 145 ShenandoahGCWorkerPhase::~ShenandoahGCWorkerPhase() { 146 _timings->record_workers_end(_phase); 147 } 148 149 ShenandoahWorkerSession::ShenandoahWorkerSession(uint worker_id) : _worker_id(worker_id) { 150 Thread* thr = Thread::current(); 151 assert(ShenandoahThreadLocalData::worker_id(thr) == ShenandoahThreadLocalData::INVALID_WORKER_ID, "Already set"); 152 ShenandoahThreadLocalData::set_worker_id(thr, worker_id); 153 } 154 155 ShenandoahConcurrentWorkerSession::~ShenandoahConcurrentWorkerSession() { 156 _event.commit(GCId::current(), ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase())); 157 } 158 159 ShenandoahParallelWorkerSession::~ShenandoahParallelWorkerSession() { 160 _event.commit(GCId::current(), _worker_id, ShenandoahPhaseTimings::phase_name(ShenandoahGCPhase::current_phase())); 161 } 162 ShenandoahWorkerSession::~ShenandoahWorkerSession() { 163 #ifdef ASSERT 164 Thread* thr = Thread::current(); 165 assert(ShenandoahThreadLocalData::worker_id(thr) != ShenandoahThreadLocalData::INVALID_WORKER_ID, "Must be set"); 166 ShenandoahThreadLocalData::set_worker_id(thr, ShenandoahThreadLocalData::INVALID_WORKER_ID); 167 #endif 168 }