Mon, 12 Aug 2019 18:30:40 +0300
8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens
apetushkov@9858 | 1 | /* |
apetushkov@9858 | 2 | * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
apetushkov@9858 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
apetushkov@9858 | 4 | * |
apetushkov@9858 | 5 | * This code is free software; you can redistribute it and/or modify it |
apetushkov@9858 | 6 | * under the terms of the GNU General Public License version 2 only, as |
apetushkov@9858 | 7 | * published by the Free Software Foundation. |
apetushkov@9858 | 8 | * |
apetushkov@9858 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
apetushkov@9858 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
apetushkov@9858 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
apetushkov@9858 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
apetushkov@9858 | 13 | * accompanied this code). |
apetushkov@9858 | 14 | * |
apetushkov@9858 | 15 | * You should have received a copy of the GNU General Public License version |
apetushkov@9858 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
apetushkov@9858 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
apetushkov@9858 | 18 | * |
apetushkov@9858 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
apetushkov@9858 | 20 | * or visit www.oracle.com if you need additional information or have any |
apetushkov@9858 | 21 | * questions. |
apetushkov@9858 | 22 | * |
apetushkov@9858 | 23 | */ |
apetushkov@9858 | 24 | #include "precompiled.hpp" |
apetushkov@9858 | 25 | #include "jfr/jfrEvents.hpp" |
apetushkov@9858 | 26 | #include "jfr/leakprofiler/sampling/objectSample.hpp" |
apetushkov@9858 | 27 | #include "jfr/leakprofiler/sampling/objectSampler.hpp" |
apetushkov@9858 | 28 | #include "jfr/leakprofiler/sampling/sampleList.hpp" |
apetushkov@9858 | 29 | #include "jfr/leakprofiler/sampling/samplePriorityQueue.hpp" |
apetushkov@9858 | 30 | #include "jfr/recorder/jfrEventSetting.inline.hpp" |
apetushkov@9858 | 31 | #include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp" |
apetushkov@9858 | 32 | #include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp" |
apetushkov@9858 | 33 | #include "jfr/support/jfrThreadLocal.hpp" |
apetushkov@9858 | 34 | #include "jfr/utilities/jfrTryLock.hpp" |
apetushkov@9858 | 35 | #include "memory/universe.hpp" |
apetushkov@9858 | 36 | #include "oops/oop.inline.hpp" |
apetushkov@9858 | 37 | #include "runtime/thread.hpp" |
apetushkov@9858 | 38 | |
apetushkov@9858 | 39 | ObjectSampler::ObjectSampler(size_t size) : |
apetushkov@9858 | 40 | _priority_queue(new SamplePriorityQueue(size)), |
apetushkov@9858 | 41 | _list(new SampleList(size)), |
apetushkov@9858 | 42 | _last_sweep(JfrTicks::now()), |
apetushkov@9858 | 43 | _total_allocated(0), |
apetushkov@9858 | 44 | _threshold(0), |
apetushkov@9858 | 45 | _size(size), |
apetushkov@9858 | 46 | _tryLock(0), |
apetushkov@9858 | 47 | _dead_samples(false) {} |
apetushkov@9858 | 48 | |
apetushkov@9858 | 49 | ObjectSampler::~ObjectSampler() { |
apetushkov@9858 | 50 | delete _priority_queue; |
apetushkov@9858 | 51 | _priority_queue = NULL; |
apetushkov@9858 | 52 | delete _list; |
apetushkov@9858 | 53 | _list = NULL; |
apetushkov@9858 | 54 | } |
apetushkov@9858 | 55 | |
apetushkov@9858 | 56 | void ObjectSampler::add(HeapWord* obj, size_t allocated, JavaThread* thread) { |
apetushkov@9858 | 57 | assert(thread != NULL, "invariant"); |
apetushkov@9858 | 58 | const traceid thread_id = thread->threadObj() != NULL ? thread->jfr_thread_local()->thread_id() : 0; |
apetushkov@9858 | 59 | if (thread_id == 0) { |
apetushkov@9858 | 60 | return; |
apetushkov@9858 | 61 | } |
apetushkov@9858 | 62 | assert(thread_id != 0, "invariant"); |
apetushkov@9858 | 63 | |
apetushkov@9858 | 64 | if (!thread->jfr_thread_local()->has_thread_checkpoint()) { |
apetushkov@9858 | 65 | JfrCheckpointManager::create_thread_checkpoint(thread); |
apetushkov@9858 | 66 | assert(thread->jfr_thread_local()->has_thread_checkpoint(), "invariant"); |
apetushkov@9858 | 67 | } |
apetushkov@9858 | 68 | |
apetushkov@9858 | 69 | traceid stack_trace_id = 0; |
apetushkov@9858 | 70 | unsigned int stack_trace_hash = 0; |
apetushkov@9858 | 71 | if (JfrEventSetting::has_stacktrace(EventOldObjectSample::eventId)) { |
apetushkov@9858 | 72 | stack_trace_id = JfrStackTraceRepository::record(thread, 0, &stack_trace_hash); |
apetushkov@9858 | 73 | thread->jfr_thread_local()->set_cached_stack_trace_id(stack_trace_id, stack_trace_hash); |
apetushkov@9858 | 74 | } |
apetushkov@9858 | 75 | |
apetushkov@9858 | 76 | JfrTryLock tryLock(&_tryLock); |
apetushkov@9858 | 77 | if (!tryLock.has_lock()) { |
apetushkov@9858 | 78 | if (LogJFR && Verbose) tty->print_cr("Skipping old object sample due to lock contention"); |
apetushkov@9858 | 79 | return; |
apetushkov@9858 | 80 | } |
apetushkov@9858 | 81 | |
apetushkov@9858 | 82 | if (_dead_samples) { |
apetushkov@9858 | 83 | scavenge(); |
apetushkov@9858 | 84 | assert(!_dead_samples, "invariant"); |
apetushkov@9858 | 85 | } |
apetushkov@9858 | 86 | |
apetushkov@9858 | 87 | _total_allocated += allocated; |
apetushkov@9858 | 88 | const size_t span = _total_allocated - _priority_queue->total(); |
apetushkov@9858 | 89 | ObjectSample* sample; |
apetushkov@9858 | 90 | if ((size_t)_priority_queue->count() == _size) { |
apetushkov@9858 | 91 | assert(_list->count() == _size, "invariant"); |
apetushkov@9858 | 92 | const ObjectSample* peek = _priority_queue->peek(); |
apetushkov@9858 | 93 | if (peek->span() > span) { |
apetushkov@9858 | 94 | // quick reject, will not fit |
apetushkov@9858 | 95 | return; |
apetushkov@9858 | 96 | } |
apetushkov@9858 | 97 | sample = _list->reuse(_priority_queue->pop()); |
apetushkov@9858 | 98 | } else { |
apetushkov@9858 | 99 | sample = _list->get(); |
apetushkov@9858 | 100 | } |
apetushkov@9858 | 101 | |
apetushkov@9858 | 102 | assert(sample != NULL, "invariant"); |
apetushkov@9858 | 103 | assert(thread_id != 0, "invariant"); |
apetushkov@9858 | 104 | sample->set_thread_id(thread_id); |
apetushkov@9858 | 105 | sample->set_thread_checkpoint(thread->jfr_thread_local()->thread_checkpoint()); |
apetushkov@9858 | 106 | |
apetushkov@9858 | 107 | if (stack_trace_id != 0) { |
apetushkov@9858 | 108 | sample->set_stack_trace_id(stack_trace_id); |
apetushkov@9858 | 109 | sample->set_stack_trace_hash(stack_trace_hash); |
apetushkov@9858 | 110 | } |
apetushkov@9858 | 111 | |
apetushkov@9858 | 112 | sample->set_span(allocated); |
apetushkov@9858 | 113 | sample->set_object((oop)obj); |
apetushkov@9858 | 114 | sample->set_allocated(allocated); |
apetushkov@9858 | 115 | sample->set_allocation_time(JfrTicks::now()); |
apetushkov@9858 | 116 | sample->set_heap_used_at_last_gc(Universe::get_heap_used_at_last_gc()); |
apetushkov@9858 | 117 | _priority_queue->push(sample); |
apetushkov@9858 | 118 | } |
apetushkov@9858 | 119 | |
apetushkov@9858 | 120 | const ObjectSample* ObjectSampler::last() const { |
apetushkov@9858 | 121 | return _list->last(); |
apetushkov@9858 | 122 | } |
apetushkov@9858 | 123 | |
apetushkov@9858 | 124 | const ObjectSample* ObjectSampler::last_resolved() const { |
apetushkov@9858 | 125 | return _list->last_resolved(); |
apetushkov@9858 | 126 | } |
apetushkov@9858 | 127 | |
apetushkov@9858 | 128 | void ObjectSampler::set_last_resolved(const ObjectSample* sample) { |
apetushkov@9858 | 129 | _list->set_last_resolved(sample); |
apetushkov@9858 | 130 | } |
apetushkov@9858 | 131 | |
apetushkov@9858 | 132 | void ObjectSampler::oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
apetushkov@9858 | 133 | ObjectSample* current = _list->last(); |
apetushkov@9858 | 134 | while (current != NULL) { |
apetushkov@9858 | 135 | ObjectSample* next = current->next(); |
apetushkov@9858 | 136 | if (!current->is_dead()) { |
apetushkov@9858 | 137 | if (is_alive->do_object_b(current->object())) { |
apetushkov@9858 | 138 | // The weakly referenced object is alive, update pointer |
apetushkov@9858 | 139 | f->do_oop(const_cast<oop*>(current->object_addr())); |
apetushkov@9858 | 140 | } else { |
apetushkov@9858 | 141 | current->set_dead(); |
apetushkov@9858 | 142 | _dead_samples = true; |
apetushkov@9858 | 143 | } |
apetushkov@9858 | 144 | } |
apetushkov@9858 | 145 | current = next; |
apetushkov@9858 | 146 | } |
apetushkov@9858 | 147 | _last_sweep = JfrTicks::now(); |
apetushkov@9858 | 148 | } |
apetushkov@9858 | 149 | |
apetushkov@9858 | 150 | void ObjectSampler::remove_dead(ObjectSample* sample) { |
apetushkov@9858 | 151 | assert(sample != NULL, "invariant"); |
apetushkov@9858 | 152 | assert(sample->is_dead(), "invariant"); |
apetushkov@9858 | 153 | ObjectSample* const previous = sample->prev(); |
apetushkov@9858 | 154 | // push span on to previous |
apetushkov@9858 | 155 | if (previous != NULL) { |
apetushkov@9858 | 156 | _priority_queue->remove(previous); |
apetushkov@9858 | 157 | previous->add_span(sample->span()); |
apetushkov@9858 | 158 | _priority_queue->push(previous); |
apetushkov@9858 | 159 | } |
apetushkov@9858 | 160 | _priority_queue->remove(sample); |
apetushkov@9858 | 161 | _list->release(sample); |
apetushkov@9858 | 162 | } |
apetushkov@9858 | 163 | |
apetushkov@9858 | 164 | void ObjectSampler::scavenge() { |
apetushkov@9858 | 165 | ObjectSample* current = _list->last(); |
apetushkov@9858 | 166 | while (current != NULL) { |
apetushkov@9858 | 167 | ObjectSample* next = current->next(); |
apetushkov@9858 | 168 | if (current->is_dead()) { |
apetushkov@9858 | 169 | remove_dead(current); |
apetushkov@9858 | 170 | } |
apetushkov@9858 | 171 | current = next; |
apetushkov@9858 | 172 | } |
apetushkov@9858 | 173 | _dead_samples = false; |
apetushkov@9858 | 174 | } |
apetushkov@9858 | 175 | |
apetushkov@9858 | 176 | int ObjectSampler::item_count() const { |
apetushkov@9858 | 177 | return _priority_queue->count(); |
apetushkov@9858 | 178 | } |
apetushkov@9858 | 179 | |
apetushkov@9858 | 180 | const ObjectSample* ObjectSampler::item_at(int index) const { |
apetushkov@9858 | 181 | return _priority_queue->item_at(index); |
apetushkov@9858 | 182 | } |
apetushkov@9858 | 183 | |
apetushkov@9858 | 184 | ObjectSample* ObjectSampler::item_at(int index) { |
apetushkov@9858 | 185 | return const_cast<ObjectSample*>( |
apetushkov@9858 | 186 | const_cast<const ObjectSampler*>(this)->item_at(index) |
apetushkov@9858 | 187 | ); |
apetushkov@9858 | 188 | } |
apetushkov@9858 | 189 | |
apetushkov@9858 | 190 | const JfrTicks& ObjectSampler::last_sweep() const { |
apetushkov@9858 | 191 | return _last_sweep; |
apetushkov@9858 | 192 | } |