Elliott Hughes | 2faa5f1 | 2012-01-30 14:42:07 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2011 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 16 | |
| 17 | #include "trace.h" |
| 18 | |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 19 | #include <sys/uio.h> |
John Reck | 0624a27 | 2015-03-26 15:47:54 -0700 | [diff] [blame] | 20 | #include <unistd.h> |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 21 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 22 | #include "art_method-inl.h" |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 23 | #include "base/casts.h" |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 24 | #include "base/enums.h" |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 25 | #include "base/stl_util.h" |
Mathieu Chartier | 32ce2ad | 2016-03-04 14:58:03 -0800 | [diff] [blame] | 26 | #include "base/systrace.h" |
Vladimir Marko | 80afd02 | 2015-05-19 18:08:00 +0100 | [diff] [blame] | 27 | #include "base/time_utils.h" |
Elliott Hughes | 7616005 | 2012-12-12 16:31:20 -0800 | [diff] [blame] | 28 | #include "base/unix_file/fd_file.h" |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 29 | #include "class_linker.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 30 | #include "common_throws.h" |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 31 | #include "debugger.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 32 | #include "dex_file-inl.h" |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 33 | #include "gc/scoped_gc_critical_section.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 34 | #include "instrumentation.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 35 | #include "mirror/class-inl.h" |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 36 | #include "mirror/dex_cache-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 37 | #include "mirror/object_array-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 38 | #include "mirror/object-inl.h" |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 39 | #include "os.h" |
Mathieu Chartier | 0795f23 | 2016-09-27 18:43:30 -0700 | [diff] [blame] | 40 | #include "scoped_thread_state_change-inl.h" |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 41 | #include "ScopedLocalRef.h" |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 42 | #include "thread.h" |
Ian Rogers | 57b86d4 | 2012-03-27 16:05:41 -0700 | [diff] [blame] | 43 | #include "thread_list.h" |
Vladimir Marko | 80afd02 | 2015-05-19 18:08:00 +0100 | [diff] [blame] | 44 | #include "utils.h" |
Ian Rogers | 166db04 | 2013-07-26 12:05:57 -0700 | [diff] [blame] | 45 | #include "entrypoints/quick/quick_entrypoints.h" |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 46 | |
| 47 | namespace art { |
| 48 | |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 49 | static constexpr size_t TraceActionBits = MinimumBitsToStore( |
| 50 | static_cast<size_t>(kTraceMethodActionMask)); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 51 | static constexpr uint8_t kOpNewMethod = 1U; |
| 52 | static constexpr uint8_t kOpNewThread = 2U; |
| 53 | |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 54 | class BuildStackTraceVisitor : public StackVisitor { |
| 55 | public: |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 56 | explicit BuildStackTraceVisitor(Thread* thread) |
| 57 | : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 58 | method_trace_(Trace::AllocStackTrace()) {} |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 59 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 60 | bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 61 | ArtMethod* m = GetMethod(); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 62 | // Ignore runtime frames (in particular callee save). |
| 63 | if (!m->IsRuntimeMethod()) { |
| 64 | method_trace_->push_back(m); |
| 65 | } |
| 66 | return true; |
| 67 | } |
| 68 | |
| 69 | // Returns a stack trace where the topmost frame corresponds with the first element of the vector. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 70 | std::vector<ArtMethod*>* GetStackTrace() const { |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 71 | return method_trace_; |
| 72 | } |
| 73 | |
| 74 | private: |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 75 | std::vector<ArtMethod*>* const method_trace_; |
Sebastien Hertz | 26f7286 | 2015-09-15 09:52:07 +0200 | [diff] [blame] | 76 | |
| 77 | DISALLOW_COPY_AND_ASSIGN(BuildStackTraceVisitor); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 78 | }; |
| 79 | |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 80 | static const char kTraceTokenChar = '*'; |
| 81 | static const uint16_t kTraceHeaderLength = 32; |
| 82 | static const uint32_t kTraceMagicValue = 0x574f4c53; |
| 83 | static const uint16_t kTraceVersionSingleClock = 2; |
| 84 | static const uint16_t kTraceVersionDualClock = 3; |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 85 | static const uint16_t kTraceRecordSizeSingleClock = 10; // using v2 |
| 86 | static const uint16_t kTraceRecordSizeDualClock = 14; // using v3 with two timestamps |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 87 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 88 | TraceClockSource Trace::default_clock_source_ = kDefaultTraceClockSource; |
Elliott Hughes | e119a36 | 2012-05-22 17:37:06 -0700 | [diff] [blame] | 89 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 90 | Trace* volatile Trace::the_trace_ = nullptr; |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 91 | pthread_t Trace::sampling_pthread_ = 0U; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 92 | std::unique_ptr<std::vector<ArtMethod*>> Trace::temp_stack_trace_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 93 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 94 | // The key identifying the tracer to update instrumentation. |
| 95 | static constexpr const char* kTracerInstrumentationKey = "Tracer"; |
| 96 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 97 | static TraceAction DecodeTraceAction(uint32_t tmid) { |
| 98 | return static_cast<TraceAction>(tmid & kTraceMethodActionMask); |
| 99 | } |
| 100 | |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 101 | ArtMethod* Trace::DecodeTraceMethod(uint32_t tmid) { |
| 102 | MutexLock mu(Thread::Current(), *unique_methods_lock_); |
| 103 | return unique_methods_[tmid >> TraceActionBits]; |
| 104 | } |
| 105 | |
| 106 | uint32_t Trace::EncodeTraceMethod(ArtMethod* method) { |
| 107 | MutexLock mu(Thread::Current(), *unique_methods_lock_); |
| 108 | uint32_t idx; |
| 109 | auto it = art_method_id_map_.find(method); |
| 110 | if (it != art_method_id_map_.end()) { |
| 111 | idx = it->second; |
| 112 | } else { |
| 113 | unique_methods_.push_back(method); |
| 114 | idx = unique_methods_.size() - 1; |
| 115 | art_method_id_map_.emplace(method, idx); |
| 116 | } |
| 117 | DCHECK_LT(idx, unique_methods_.size()); |
| 118 | DCHECK_EQ(unique_methods_[idx], method); |
| 119 | return idx; |
| 120 | } |
| 121 | |
| 122 | uint32_t Trace::EncodeTraceMethodAndAction(ArtMethod* method, TraceAction action) { |
| 123 | uint32_t tmid = (EncodeTraceMethod(method) << TraceActionBits) | action; |
| 124 | DCHECK_EQ(method, DecodeTraceMethod(tmid)); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 125 | return tmid; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 126 | } |
| 127 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 128 | std::vector<ArtMethod*>* Trace::AllocStackTrace() { |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 129 | return (temp_stack_trace_.get() != nullptr) ? temp_stack_trace_.release() : |
| 130 | new std::vector<ArtMethod*>(); |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 131 | } |
| 132 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 133 | void Trace::FreeStackTrace(std::vector<ArtMethod*>* stack_trace) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 134 | stack_trace->clear(); |
| 135 | temp_stack_trace_.reset(stack_trace); |
| 136 | } |
| 137 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 138 | void Trace::SetDefaultClockSource(TraceClockSource clock_source) { |
Elliott Hughes | 0a18df8 | 2015-01-09 15:16:16 -0800 | [diff] [blame] | 139 | #if defined(__linux__) |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 140 | default_clock_source_ = clock_source; |
| 141 | #else |
Igor Murashkin | aaebaa0 | 2015-01-26 10:55:53 -0800 | [diff] [blame] | 142 | if (clock_source != TraceClockSource::kWall) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 143 | LOG(WARNING) << "Ignoring tracing request to use CPU time."; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 144 | } |
| 145 | #endif |
| 146 | } |
| 147 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 148 | static uint16_t GetTraceVersion(TraceClockSource clock_source) { |
Igor Murashkin | aaebaa0 | 2015-01-26 10:55:53 -0800 | [diff] [blame] | 149 | return (clock_source == TraceClockSource::kDual) ? kTraceVersionDualClock |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 150 | : kTraceVersionSingleClock; |
| 151 | } |
| 152 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 153 | static uint16_t GetRecordSize(TraceClockSource clock_source) { |
Igor Murashkin | aaebaa0 | 2015-01-26 10:55:53 -0800 | [diff] [blame] | 154 | return (clock_source == TraceClockSource::kDual) ? kTraceRecordSizeDualClock |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 155 | : kTraceRecordSizeSingleClock; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 156 | } |
| 157 | |
Elliott Hughes | e119a36 | 2012-05-22 17:37:06 -0700 | [diff] [blame] | 158 | bool Trace::UseThreadCpuClock() { |
Igor Murashkin | aaebaa0 | 2015-01-26 10:55:53 -0800 | [diff] [blame] | 159 | return (clock_source_ == TraceClockSource::kThreadCpu) || |
| 160 | (clock_source_ == TraceClockSource::kDual); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 161 | } |
| 162 | |
Elliott Hughes | e119a36 | 2012-05-22 17:37:06 -0700 | [diff] [blame] | 163 | bool Trace::UseWallClock() { |
Igor Murashkin | aaebaa0 | 2015-01-26 10:55:53 -0800 | [diff] [blame] | 164 | return (clock_source_ == TraceClockSource::kWall) || |
| 165 | (clock_source_ == TraceClockSource::kDual); |
Elliott Hughes | e119a36 | 2012-05-22 17:37:06 -0700 | [diff] [blame] | 166 | } |
| 167 | |
Jeff Hao | c5d824a | 2014-07-28 18:35:38 -0700 | [diff] [blame] | 168 | void Trace::MeasureClockOverhead() { |
| 169 | if (UseThreadCpuClock()) { |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 170 | Thread::Current()->GetCpuMicroTime(); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 171 | } |
Jeff Hao | c5d824a | 2014-07-28 18:35:38 -0700 | [diff] [blame] | 172 | if (UseWallClock()) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 173 | MicroTime(); |
| 174 | } |
| 175 | } |
| 176 | |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 177 | // Compute an average time taken to measure clocks. |
Jeff Hao | c5d824a | 2014-07-28 18:35:38 -0700 | [diff] [blame] | 178 | uint32_t Trace::GetClockOverheadNanoSeconds() { |
Jeff Hao | 57dac6e | 2013-08-15 16:36:24 -0700 | [diff] [blame] | 179 | Thread* self = Thread::Current(); |
| 180 | uint64_t start = self->GetCpuMicroTime(); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 181 | |
| 182 | for (int i = 4000; i > 0; i--) { |
Jeff Hao | c5d824a | 2014-07-28 18:35:38 -0700 | [diff] [blame] | 183 | MeasureClockOverhead(); |
| 184 | MeasureClockOverhead(); |
| 185 | MeasureClockOverhead(); |
| 186 | MeasureClockOverhead(); |
| 187 | MeasureClockOverhead(); |
| 188 | MeasureClockOverhead(); |
| 189 | MeasureClockOverhead(); |
| 190 | MeasureClockOverhead(); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 191 | } |
| 192 | |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 193 | uint64_t elapsed_us = self->GetCpuMicroTime() - start; |
| 194 | return static_cast<uint32_t>(elapsed_us / 32); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 195 | } |
| 196 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 197 | // TODO: put this somewhere with the big-endian equivalent used by JDWP. |
| 198 | static void Append2LE(uint8_t* buf, uint16_t val) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 199 | *buf++ = static_cast<uint8_t>(val); |
| 200 | *buf++ = static_cast<uint8_t>(val >> 8); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 201 | } |
| 202 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 203 | // TODO: put this somewhere with the big-endian equivalent used by JDWP. |
| 204 | static void Append4LE(uint8_t* buf, uint32_t val) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 205 | *buf++ = static_cast<uint8_t>(val); |
| 206 | *buf++ = static_cast<uint8_t>(val >> 8); |
| 207 | *buf++ = static_cast<uint8_t>(val >> 16); |
| 208 | *buf++ = static_cast<uint8_t>(val >> 24); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 209 | } |
| 210 | |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 211 | // TODO: put this somewhere with the big-endian equivalent used by JDWP. |
| 212 | static void Append8LE(uint8_t* buf, uint64_t val) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 213 | *buf++ = static_cast<uint8_t>(val); |
| 214 | *buf++ = static_cast<uint8_t>(val >> 8); |
| 215 | *buf++ = static_cast<uint8_t>(val >> 16); |
| 216 | *buf++ = static_cast<uint8_t>(val >> 24); |
| 217 | *buf++ = static_cast<uint8_t>(val >> 32); |
| 218 | *buf++ = static_cast<uint8_t>(val >> 40); |
| 219 | *buf++ = static_cast<uint8_t>(val >> 48); |
| 220 | *buf++ = static_cast<uint8_t>(val >> 56); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 221 | } |
| 222 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 223 | static void GetSample(Thread* thread, void* arg) REQUIRES_SHARED(Locks::mutator_lock_) { |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 224 | BuildStackTraceVisitor build_trace_visitor(thread); |
| 225 | build_trace_visitor.WalkStack(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 226 | std::vector<ArtMethod*>* stack_trace = build_trace_visitor.GetStackTrace(); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 227 | Trace* the_trace = reinterpret_cast<Trace*>(arg); |
| 228 | the_trace->CompareAndUpdateStackTrace(thread, stack_trace); |
| 229 | } |
| 230 | |
Andreas Gampe | ca71458 | 2015-04-03 19:41:34 -0700 | [diff] [blame] | 231 | static void ClearThreadStackTraceAndClockBase(Thread* thread, void* arg ATTRIBUTE_UNUSED) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 232 | thread->SetTraceClockBase(0); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 233 | std::vector<ArtMethod*>* stack_trace = thread->GetStackTraceSample(); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 234 | thread->SetStackTraceSample(nullptr); |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 235 | delete stack_trace; |
| 236 | } |
| 237 | |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 238 | void Trace::CompareAndUpdateStackTrace(Thread* thread, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 239 | std::vector<ArtMethod*>* stack_trace) { |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 240 | CHECK_EQ(pthread_self(), sampling_pthread_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 241 | std::vector<ArtMethod*>* old_stack_trace = thread->GetStackTraceSample(); |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 242 | // Update the thread's stack trace sample. |
| 243 | thread->SetStackTraceSample(stack_trace); |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 244 | // Read timer clocks to use for all events in this trace. |
| 245 | uint32_t thread_clock_diff = 0; |
| 246 | uint32_t wall_clock_diff = 0; |
| 247 | ReadClocks(thread, &thread_clock_diff, &wall_clock_diff); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 248 | if (old_stack_trace == nullptr) { |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 249 | // If there's no previous stack trace sample for this thread, log an entry event for all |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 250 | // methods in the trace. |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 251 | for (auto rit = stack_trace->rbegin(); rit != stack_trace->rend(); ++rit) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 252 | LogMethodTraceEvent(thread, *rit, instrumentation::Instrumentation::kMethodEntered, |
| 253 | thread_clock_diff, wall_clock_diff); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 254 | } |
| 255 | } else { |
| 256 | // If there's a previous stack trace for this thread, diff the traces and emit entry and exit |
| 257 | // events accordingly. |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 258 | auto old_rit = old_stack_trace->rbegin(); |
| 259 | auto rit = stack_trace->rbegin(); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 260 | // Iterate bottom-up over both traces until there's a difference between them. |
| 261 | while (old_rit != old_stack_trace->rend() && rit != stack_trace->rend() && *old_rit == *rit) { |
| 262 | old_rit++; |
| 263 | rit++; |
| 264 | } |
| 265 | // Iterate top-down over the old trace until the point where they differ, emitting exit events. |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 266 | for (auto old_it = old_stack_trace->begin(); old_it != old_rit.base(); ++old_it) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 267 | LogMethodTraceEvent(thread, *old_it, instrumentation::Instrumentation::kMethodExited, |
| 268 | thread_clock_diff, wall_clock_diff); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 269 | } |
| 270 | // Iterate bottom-up over the new trace from the point where they differ, emitting entry events. |
| 271 | for (; rit != stack_trace->rend(); ++rit) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 272 | LogMethodTraceEvent(thread, *rit, instrumentation::Instrumentation::kMethodEntered, |
| 273 | thread_clock_diff, wall_clock_diff); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 274 | } |
Jeff Hao | 5ce4b17 | 2013-08-16 16:27:18 -0700 | [diff] [blame] | 275 | FreeStackTrace(old_stack_trace); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 276 | } |
| 277 | } |
| 278 | |
| 279 | void* Trace::RunSamplingThread(void* arg) { |
| 280 | Runtime* runtime = Runtime::Current(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 281 | intptr_t interval_us = reinterpret_cast<intptr_t>(arg); |
Jeff Hao | 4044bda | 2014-01-06 15:50:45 -0800 | [diff] [blame] | 282 | CHECK_GE(interval_us, 0); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 283 | CHECK(runtime->AttachCurrentThread("Sampling Profiler", true, runtime->GetSystemThreadGroup(), |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 284 | !runtime->IsAotCompiler())); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 285 | |
| 286 | while (true) { |
Jeff Hao | 23009dc | 2013-08-22 15:36:42 -0700 | [diff] [blame] | 287 | usleep(interval_us); |
Mathieu Chartier | 32ce2ad | 2016-03-04 14:58:03 -0800 | [diff] [blame] | 288 | ScopedTrace trace("Profile sampling"); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 289 | Thread* self = Thread::Current(); |
| 290 | Trace* the_trace; |
| 291 | { |
| 292 | MutexLock mu(self, *Locks::trace_lock_); |
| 293 | the_trace = the_trace_; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 294 | if (the_trace == nullptr) { |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 295 | break; |
| 296 | } |
| 297 | } |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 298 | { |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 299 | ScopedSuspendAll ssa(__FUNCTION__); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 300 | MutexLock mu(self, *Locks::thread_list_lock_); |
| 301 | runtime->GetThreadList()->ForEach(GetSample, the_trace); |
| 302 | } |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | runtime->DetachCurrentThread(); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 306 | return nullptr; |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 307 | } |
| 308 | |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 309 | void Trace::Start(const char* trace_filename, int trace_fd, size_t buffer_size, int flags, |
Andreas Gampe | 7e7e0f4 | 2015-03-29 15:26:23 -0700 | [diff] [blame] | 310 | TraceOutputMode output_mode, TraceMode trace_mode, int interval_us) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 311 | Thread* self = Thread::Current(); |
| 312 | { |
| 313 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 314 | if (the_trace_ != nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 315 | LOG(ERROR) << "Trace already in progress, ignoring this request"; |
| 316 | return; |
| 317 | } |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 318 | } |
Jeff Hao | d063d91 | 2014-09-08 09:38:18 -0700 | [diff] [blame] | 319 | |
| 320 | // Check interval if sampling is enabled |
Andreas Gampe | 7e7e0f4 | 2015-03-29 15:26:23 -0700 | [diff] [blame] | 321 | if (trace_mode == TraceMode::kSampling && interval_us <= 0) { |
Jeff Hao | d063d91 | 2014-09-08 09:38:18 -0700 | [diff] [blame] | 322 | LOG(ERROR) << "Invalid sampling interval: " << interval_us; |
| 323 | ScopedObjectAccess soa(self); |
| 324 | ThrowRuntimeException("Invalid sampling interval: %d", interval_us); |
| 325 | return; |
| 326 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 327 | |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 328 | // Open trace file if not going directly to ddms. |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 329 | std::unique_ptr<File> trace_file; |
Andreas Gampe | 7e7e0f4 | 2015-03-29 15:26:23 -0700 | [diff] [blame] | 330 | if (output_mode != TraceOutputMode::kDDMS) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 331 | if (trace_fd < 0) { |
Calin Juravle | f83e733 | 2015-11-04 16:16:47 +0000 | [diff] [blame] | 332 | trace_file.reset(OS::CreateEmptyFileWriteOnly(trace_filename)); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 333 | } else { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 334 | trace_file.reset(new File(trace_fd, "tracefile")); |
Elliott Hughes | 7616005 | 2012-12-12 16:31:20 -0800 | [diff] [blame] | 335 | trace_file->DisableAutoClose(); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 336 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 337 | if (trace_file.get() == nullptr) { |
jeffhao | b5e8185 | 2012-03-12 11:15:45 -0700 | [diff] [blame] | 338 | PLOG(ERROR) << "Unable to open trace file '" << trace_filename << "'"; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 339 | ScopedObjectAccess soa(self); |
| 340 | ThrowRuntimeException("Unable to open trace file '%s'", trace_filename); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 341 | return; |
| 342 | } |
| 343 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 344 | |
Jeff Hao | d063d91 | 2014-09-08 09:38:18 -0700 | [diff] [blame] | 345 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 346 | |
| 347 | // Enable count of allocs if specified in the flags. |
| 348 | bool enable_stats = false; |
| 349 | |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 350 | // Create Trace object. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 351 | { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 352 | // Required since EnableMethodTracing calls ConfigureStubs which visits class linker classes. |
| 353 | gc::ScopedGCCriticalSection gcs(self, |
| 354 | gc::kGcCauseInstrumentation, |
| 355 | gc::kCollectorTypeInstrumentation); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 356 | ScopedSuspendAll ssa(__FUNCTION__); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 357 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 358 | if (the_trace_ != nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 359 | LOG(ERROR) << "Trace already in progress, ignoring this request"; |
| 360 | } else { |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 361 | enable_stats = (flags && kTraceCountAllocs) != 0; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 362 | the_trace_ = new Trace(trace_file.release(), trace_filename, buffer_size, flags, output_mode, |
| 363 | trace_mode); |
Andreas Gampe | 7e7e0f4 | 2015-03-29 15:26:23 -0700 | [diff] [blame] | 364 | if (trace_mode == TraceMode::kSampling) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 365 | CHECK_PTHREAD_CALL(pthread_create, (&sampling_pthread_, nullptr, &RunSamplingThread, |
Jeff Hao | 23009dc | 2013-08-22 15:36:42 -0700 | [diff] [blame] | 366 | reinterpret_cast<void*>(interval_us)), |
| 367 | "Sampling profiler thread"); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 368 | the_trace_->interval_us_ = interval_us; |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 369 | } else { |
| 370 | runtime->GetInstrumentation()->AddListener(the_trace_, |
| 371 | instrumentation::Instrumentation::kMethodEntered | |
| 372 | instrumentation::Instrumentation::kMethodExited | |
| 373 | instrumentation::Instrumentation::kMethodUnwind); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 374 | // TODO: In full-PIC mode, we don't need to fully deopt. |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 375 | runtime->GetInstrumentation()->EnableMethodTracing(kTracerInstrumentationKey); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 376 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 377 | } |
jeffhao | 0791adc | 2012-04-04 11:14:32 -0700 | [diff] [blame] | 378 | } |
Jeff Hao | d063d91 | 2014-09-08 09:38:18 -0700 | [diff] [blame] | 379 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 380 | // Can't call this when holding the mutator lock. |
| 381 | if (enable_stats) { |
| 382 | runtime->SetStatsEnabled(true); |
| 383 | } |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 384 | } |
| 385 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 386 | void Trace::StopTracing(bool finish_tracing, bool flush_file) { |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 387 | bool stop_alloc_counting = false; |
Mathieu Chartier | 02e5f16 | 2015-03-11 09:54:22 -0700 | [diff] [blame] | 388 | Runtime* const runtime = Runtime::Current(); |
| 389 | Trace* the_trace = nullptr; |
Hiroshi Yamauchi | 9ea02c4 | 2016-03-03 15:09:27 -0800 | [diff] [blame] | 390 | Thread* const self = Thread::Current(); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 391 | pthread_t sampling_pthread = 0U; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 392 | { |
Hiroshi Yamauchi | 9ea02c4 | 2016-03-03 15:09:27 -0800 | [diff] [blame] | 393 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 394 | if (the_trace_ == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 395 | LOG(ERROR) << "Trace stop requested, but no trace currently running"; |
| 396 | } else { |
| 397 | the_trace = the_trace_; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 398 | the_trace_ = nullptr; |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 399 | sampling_pthread = sampling_pthread_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 400 | } |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 401 | } |
Mathieu Chartier | 02e5f16 | 2015-03-11 09:54:22 -0700 | [diff] [blame] | 402 | // Make sure that we join before we delete the trace since we don't want to have |
| 403 | // the sampling thread access a stale pointer. This finishes since the sampling thread exits when |
| 404 | // the_trace_ is null. |
| 405 | if (sampling_pthread != 0U) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 406 | CHECK_PTHREAD_CALL(pthread_join, (sampling_pthread, nullptr), "sampling thread shutdown"); |
Mathieu Chartier | 02e5f16 | 2015-03-11 09:54:22 -0700 | [diff] [blame] | 407 | sampling_pthread_ = 0U; |
| 408 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 409 | |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 410 | { |
Hiroshi Yamauchi | 9ea02c4 | 2016-03-03 15:09:27 -0800 | [diff] [blame] | 411 | gc::ScopedGCCriticalSection gcs(self, |
| 412 | gc::kGcCauseInstrumentation, |
| 413 | gc::kCollectorTypeInstrumentation); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 414 | ScopedSuspendAll ssa(__FUNCTION__); |
| 415 | if (the_trace != nullptr) { |
| 416 | stop_alloc_counting = (the_trace->flags_ & Trace::kTraceCountAllocs) != 0; |
| 417 | if (finish_tracing) { |
| 418 | the_trace->FinishTracing(); |
| 419 | } |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 420 | |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 421 | if (the_trace->trace_mode_ == TraceMode::kSampling) { |
Hiroshi Yamauchi | 9ea02c4 | 2016-03-03 15:09:27 -0800 | [diff] [blame] | 422 | MutexLock mu(self, *Locks::thread_list_lock_); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 423 | runtime->GetThreadList()->ForEach(ClearThreadStackTraceAndClockBase, nullptr); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 424 | } else { |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 425 | runtime->GetInstrumentation()->DisableMethodTracing(kTracerInstrumentationKey); |
| 426 | runtime->GetInstrumentation()->RemoveListener( |
| 427 | the_trace, instrumentation::Instrumentation::kMethodEntered | |
| 428 | instrumentation::Instrumentation::kMethodExited | |
| 429 | instrumentation::Instrumentation::kMethodUnwind); |
Andreas Gampe | 4303ba9 | 2014-11-06 01:00:46 -0800 | [diff] [blame] | 430 | } |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 431 | if (the_trace->trace_file_.get() != nullptr) { |
| 432 | // Do not try to erase, so flush and close explicitly. |
| 433 | if (flush_file) { |
| 434 | if (the_trace->trace_file_->Flush() != 0) { |
| 435 | PLOG(WARNING) << "Could not flush trace file."; |
| 436 | } |
| 437 | } else { |
| 438 | the_trace->trace_file_->MarkUnchecked(); // Do not trigger guard. |
| 439 | } |
| 440 | if (the_trace->trace_file_->Close() != 0) { |
| 441 | PLOG(ERROR) << "Could not close trace file."; |
| 442 | } |
Andreas Gampe | 4303ba9 | 2014-11-06 01:00:46 -0800 | [diff] [blame] | 443 | } |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 444 | delete the_trace; |
Andreas Gampe | 4303ba9 | 2014-11-06 01:00:46 -0800 | [diff] [blame] | 445 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 446 | } |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 447 | if (stop_alloc_counting) { |
| 448 | // Can be racy since SetStatsEnabled is not guarded by any locks. |
Mathieu Chartier | 02e5f16 | 2015-03-11 09:54:22 -0700 | [diff] [blame] | 449 | runtime->SetStatsEnabled(false); |
Jeff Hao | 0abc72e | 2013-08-13 13:45:14 -0700 | [diff] [blame] | 450 | } |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 451 | } |
| 452 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 453 | void Trace::Abort() { |
| 454 | // Do not write anything anymore. |
| 455 | StopTracing(false, false); |
| 456 | } |
| 457 | |
| 458 | void Trace::Stop() { |
| 459 | // Finish writing. |
| 460 | StopTracing(true, true); |
| 461 | } |
| 462 | |
jeffhao | b5e8185 | 2012-03-12 11:15:45 -0700 | [diff] [blame] | 463 | void Trace::Shutdown() { |
Jeff Hao | 64caa7d | 2013-08-29 11:18:01 -0700 | [diff] [blame] | 464 | if (GetMethodTracingMode() != kTracingInactive) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 465 | Stop(); |
jeffhao | b5e8185 | 2012-03-12 11:15:45 -0700 | [diff] [blame] | 466 | } |
jeffhao | b5e8185 | 2012-03-12 11:15:45 -0700 | [diff] [blame] | 467 | } |
| 468 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 469 | void Trace::Pause() { |
| 470 | bool stop_alloc_counting = false; |
| 471 | Runtime* runtime = Runtime::Current(); |
| 472 | Trace* the_trace = nullptr; |
| 473 | |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 474 | Thread* const self = Thread::Current(); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 475 | pthread_t sampling_pthread = 0U; |
| 476 | { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 477 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 478 | if (the_trace_ == nullptr) { |
| 479 | LOG(ERROR) << "Trace pause requested, but no trace currently running"; |
| 480 | return; |
| 481 | } else { |
| 482 | the_trace = the_trace_; |
| 483 | sampling_pthread = sampling_pthread_; |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | if (sampling_pthread != 0U) { |
| 488 | { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 489 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 490 | the_trace_ = nullptr; |
| 491 | } |
| 492 | CHECK_PTHREAD_CALL(pthread_join, (sampling_pthread, nullptr), "sampling thread shutdown"); |
| 493 | sampling_pthread_ = 0U; |
| 494 | { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 495 | MutexLock mu(self, *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 496 | the_trace_ = the_trace; |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | if (the_trace != nullptr) { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 501 | gc::ScopedGCCriticalSection gcs(self, |
| 502 | gc::kGcCauseInstrumentation, |
| 503 | gc::kCollectorTypeInstrumentation); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 504 | ScopedSuspendAll ssa(__FUNCTION__); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 505 | stop_alloc_counting = (the_trace->flags_ & Trace::kTraceCountAllocs) != 0; |
| 506 | |
| 507 | if (the_trace->trace_mode_ == TraceMode::kSampling) { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 508 | MutexLock mu(self, *Locks::thread_list_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 509 | runtime->GetThreadList()->ForEach(ClearThreadStackTraceAndClockBase, nullptr); |
| 510 | } else { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 511 | runtime->GetInstrumentation()->DisableMethodTracing(kTracerInstrumentationKey); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 512 | runtime->GetInstrumentation()->RemoveListener( |
| 513 | the_trace, |
| 514 | instrumentation::Instrumentation::kMethodEntered | |
| 515 | instrumentation::Instrumentation::kMethodExited | |
| 516 | instrumentation::Instrumentation::kMethodUnwind); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 517 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | if (stop_alloc_counting) { |
| 521 | // Can be racy since SetStatsEnabled is not guarded by any locks. |
| 522 | Runtime::Current()->SetStatsEnabled(false); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | void Trace::Resume() { |
| 527 | Thread* self = Thread::Current(); |
| 528 | Trace* the_trace; |
| 529 | { |
| 530 | MutexLock mu(self, *Locks::trace_lock_); |
| 531 | if (the_trace_ == nullptr) { |
| 532 | LOG(ERROR) << "No trace to resume (or sampling mode), ignoring this request"; |
| 533 | return; |
| 534 | } |
| 535 | the_trace = the_trace_; |
| 536 | } |
| 537 | |
| 538 | Runtime* runtime = Runtime::Current(); |
| 539 | |
| 540 | // Enable count of allocs if specified in the flags. |
| 541 | bool enable_stats = (the_trace->flags_ && kTraceCountAllocs) != 0; |
| 542 | |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 543 | { |
Mathieu Chartier | aa51682 | 2015-10-02 15:53:37 -0700 | [diff] [blame] | 544 | gc::ScopedGCCriticalSection gcs(self, |
| 545 | gc::kGcCauseInstrumentation, |
| 546 | gc::kCollectorTypeInstrumentation); |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 547 | ScopedSuspendAll ssa(__FUNCTION__); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 548 | |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 549 | // Reenable. |
| 550 | if (the_trace->trace_mode_ == TraceMode::kSampling) { |
| 551 | CHECK_PTHREAD_CALL(pthread_create, (&sampling_pthread_, nullptr, &RunSamplingThread, |
| 552 | reinterpret_cast<void*>(the_trace->interval_us_)), "Sampling profiler thread"); |
| 553 | } else { |
| 554 | runtime->GetInstrumentation()->AddListener(the_trace, |
| 555 | instrumentation::Instrumentation::kMethodEntered | |
| 556 | instrumentation::Instrumentation::kMethodExited | |
| 557 | instrumentation::Instrumentation::kMethodUnwind); |
| 558 | // TODO: In full-PIC mode, we don't need to fully deopt. |
| 559 | runtime->GetInstrumentation()->EnableMethodTracing(kTracerInstrumentationKey); |
| 560 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 561 | } |
| 562 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 563 | // Can't call this when holding the mutator lock. |
| 564 | if (enable_stats) { |
| 565 | runtime->SetStatsEnabled(true); |
| 566 | } |
| 567 | } |
| 568 | |
Jeff Hao | 64caa7d | 2013-08-29 11:18:01 -0700 | [diff] [blame] | 569 | TracingMode Trace::GetMethodTracingMode() { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 570 | MutexLock mu(Thread::Current(), *Locks::trace_lock_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 571 | if (the_trace_ == nullptr) { |
Jeff Hao | 64caa7d | 2013-08-29 11:18:01 -0700 | [diff] [blame] | 572 | return kTracingInactive; |
Jeff Hao | 64caa7d | 2013-08-29 11:18:01 -0700 | [diff] [blame] | 573 | } else { |
Andreas Gampe | 7e7e0f4 | 2015-03-29 15:26:23 -0700 | [diff] [blame] | 574 | switch (the_trace_->trace_mode_) { |
| 575 | case TraceMode::kSampling: |
| 576 | return kSampleProfilingActive; |
| 577 | case TraceMode::kMethodTracing: |
| 578 | return kMethodTracingActive; |
| 579 | } |
| 580 | LOG(FATAL) << "Unreachable"; |
| 581 | UNREACHABLE(); |
Jeff Hao | 64caa7d | 2013-08-29 11:18:01 -0700 | [diff] [blame] | 582 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 583 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 584 | |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 585 | static constexpr size_t kMinBufSize = 18U; // Trace header is up to 18B. |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 586 | |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 587 | Trace::Trace(File* trace_file, const char* trace_name, size_t buffer_size, int flags, |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 588 | TraceOutputMode output_mode, TraceMode trace_mode) |
| 589 | : trace_file_(trace_file), |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 590 | buf_(new uint8_t[std::max(kMinBufSize, buffer_size)]()), |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 591 | flags_(flags), trace_output_mode_(output_mode), trace_mode_(trace_mode), |
| 592 | clock_source_(default_clock_source_), |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 593 | buffer_size_(std::max(kMinBufSize, buffer_size)), |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 594 | start_time_(MicroTime()), clock_overhead_ns_(GetClockOverheadNanoSeconds()), cur_offset_(0), |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 595 | overflow_(false), interval_us_(0), streaming_lock_(nullptr), |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 596 | unique_methods_lock_(new Mutex("unique methods lock", kTracingUniqueMethodsLock)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 597 | uint16_t trace_version = GetTraceVersion(clock_source_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 598 | if (output_mode == TraceOutputMode::kStreaming) { |
| 599 | trace_version |= 0xF0U; |
| 600 | } |
| 601 | // Set up the beginning of the trace. |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 602 | memset(buf_.get(), 0, kTraceHeaderLength); |
| 603 | Append4LE(buf_.get(), kTraceMagicValue); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 604 | Append2LE(buf_.get() + 4, trace_version); |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 605 | Append2LE(buf_.get() + 6, kTraceHeaderLength); |
| 606 | Append8LE(buf_.get() + 8, start_time_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 607 | if (trace_version >= kTraceVersionDualClock) { |
| 608 | uint16_t record_size = GetRecordSize(clock_source_); |
| 609 | Append2LE(buf_.get() + 16, record_size); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 610 | } |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 611 | static_assert(18 <= kMinBufSize, "Minimum buffer size not large enough for trace header"); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 612 | |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 613 | // Update current offset. |
Ian Rogers | 8ab25ef | 2014-07-09 18:00:50 -0700 | [diff] [blame] | 614 | cur_offset_.StoreRelaxed(kTraceHeaderLength); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 615 | |
| 616 | if (output_mode == TraceOutputMode::kStreaming) { |
| 617 | streaming_file_name_ = trace_name; |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 618 | streaming_lock_ = new Mutex("tracing lock", LockLevel::kTracingStreamingLock); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 619 | seen_threads_.reset(new ThreadIDBitSet()); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | Trace::~Trace() { |
| 624 | delete streaming_lock_; |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 625 | delete unique_methods_lock_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 626 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 627 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 628 | static uint64_t ReadBytes(uint8_t* buf, size_t bytes) { |
| 629 | uint64_t ret = 0; |
| 630 | for (size_t i = 0; i < bytes; ++i) { |
| 631 | ret |= static_cast<uint64_t>(buf[i]) << (i * 8); |
| 632 | } |
| 633 | return ret; |
| 634 | } |
| 635 | |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 636 | void Trace::DumpBuf(uint8_t* buf, size_t buf_size, TraceClockSource clock_source) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 637 | uint8_t* ptr = buf + kTraceHeaderLength; |
| 638 | uint8_t* end = buf + buf_size; |
| 639 | |
| 640 | while (ptr < end) { |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 641 | uint32_t tmid = ReadBytes(ptr + 2, sizeof(tmid)); |
| 642 | ArtMethod* method = DecodeTraceMethod(tmid); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 643 | TraceAction action = DecodeTraceAction(tmid); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 644 | LOG(INFO) << ArtMethod::PrettyMethod(method) << " " << static_cast<int>(action); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 645 | ptr += GetRecordSize(clock_source); |
| 646 | } |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 647 | } |
| 648 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 649 | void Trace::FinishTracing() { |
| 650 | size_t final_offset = 0; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 651 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 652 | std::set<ArtMethod*> visited_methods; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 653 | if (trace_output_mode_ == TraceOutputMode::kStreaming) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 654 | // Clean up. |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 655 | STLDeleteValues(&seen_methods_); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 656 | } else { |
| 657 | final_offset = cur_offset_.LoadRelaxed(); |
| 658 | GetVisitedMethods(final_offset, &visited_methods); |
| 659 | } |
| 660 | |
| 661 | // Compute elapsed time. |
| 662 | uint64_t elapsed = MicroTime() - start_time_; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 663 | |
| 664 | std::ostringstream os; |
| 665 | |
| 666 | os << StringPrintf("%cversion\n", kTraceTokenChar); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 667 | os << StringPrintf("%d\n", GetTraceVersion(clock_source_)); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 668 | os << StringPrintf("data-file-overflow=%s\n", overflow_ ? "true" : "false"); |
| 669 | if (UseThreadCpuClock()) { |
| 670 | if (UseWallClock()) { |
| 671 | os << StringPrintf("clock=dual\n"); |
| 672 | } else { |
| 673 | os << StringPrintf("clock=thread-cpu\n"); |
| 674 | } |
| 675 | } else { |
| 676 | os << StringPrintf("clock=wall\n"); |
| 677 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 678 | os << StringPrintf("elapsed-time-usec=%" PRIu64 "\n", elapsed); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 679 | if (trace_output_mode_ != TraceOutputMode::kStreaming) { |
| 680 | size_t num_records = (final_offset - kTraceHeaderLength) / GetRecordSize(clock_source_); |
| 681 | os << StringPrintf("num-method-calls=%zd\n", num_records); |
| 682 | } |
Jeff Hao | c5d824a | 2014-07-28 18:35:38 -0700 | [diff] [blame] | 683 | os << StringPrintf("clock-call-overhead-nsec=%d\n", clock_overhead_ns_); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 684 | os << StringPrintf("vm=art\n"); |
John Reck | 0624a27 | 2015-03-26 15:47:54 -0700 | [diff] [blame] | 685 | os << StringPrintf("pid=%d\n", getpid()); |
jeffhao | 0791adc | 2012-04-04 11:14:32 -0700 | [diff] [blame] | 686 | if ((flags_ & kTraceCountAllocs) != 0) { |
| 687 | os << StringPrintf("alloc-count=%d\n", Runtime::Current()->GetStat(KIND_ALLOCATED_OBJECTS)); |
| 688 | os << StringPrintf("alloc-size=%d\n", Runtime::Current()->GetStat(KIND_ALLOCATED_BYTES)); |
| 689 | os << StringPrintf("gc-count=%d\n", Runtime::Current()->GetStat(KIND_GC_INVOCATIONS)); |
| 690 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 691 | os << StringPrintf("%cthreads\n", kTraceTokenChar); |
| 692 | DumpThreadList(os); |
| 693 | os << StringPrintf("%cmethods\n", kTraceTokenChar); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 694 | DumpMethodList(os, visited_methods); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 695 | os << StringPrintf("%cend\n", kTraceTokenChar); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 696 | std::string header(os.str()); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 697 | |
| 698 | if (trace_output_mode_ == TraceOutputMode::kStreaming) { |
Andreas Gampe | df87892 | 2015-08-13 16:44:54 -0700 | [diff] [blame] | 699 | File file(streaming_file_name_ + ".sec", O_CREAT | O_WRONLY, true); |
| 700 | if (!file.IsOpened()) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 701 | LOG(WARNING) << "Could not open secondary trace file!"; |
| 702 | return; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 703 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 704 | if (!file.WriteFully(header.c_str(), header.length())) { |
| 705 | file.Erase(); |
Elliott Hughes | 7b9d996 | 2012-04-20 18:48:18 -0700 | [diff] [blame] | 706 | std::string detail(StringPrintf("Trace data write failed: %s", strerror(errno))); |
| 707 | PLOG(ERROR) << detail; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 708 | ThrowRuntimeException("%s", detail.c_str()); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 709 | } |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 710 | if (file.FlushCloseOrErase() != 0) { |
| 711 | PLOG(ERROR) << "Could not write secondary file"; |
| 712 | } |
| 713 | } else { |
| 714 | if (trace_file_.get() == nullptr) { |
| 715 | iovec iov[2]; |
| 716 | iov[0].iov_base = reinterpret_cast<void*>(const_cast<char*>(header.c_str())); |
| 717 | iov[0].iov_len = header.length(); |
| 718 | iov[1].iov_base = buf_.get(); |
| 719 | iov[1].iov_len = final_offset; |
| 720 | Dbg::DdmSendChunkV(CHUNK_TYPE("MPSE"), iov, 2); |
| 721 | const bool kDumpTraceInfo = false; |
| 722 | if (kDumpTraceInfo) { |
| 723 | LOG(INFO) << "Trace sent:\n" << header; |
| 724 | DumpBuf(buf_.get(), final_offset, clock_source_); |
| 725 | } |
| 726 | } else { |
| 727 | if (!trace_file_->WriteFully(header.c_str(), header.length()) || |
| 728 | !trace_file_->WriteFully(buf_.get(), final_offset)) { |
| 729 | std::string detail(StringPrintf("Trace data write failed: %s", strerror(errno))); |
| 730 | PLOG(ERROR) << detail; |
| 731 | ThrowRuntimeException("%s", detail.c_str()); |
| 732 | } |
| 733 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 734 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 735 | } |
| 736 | |
Roland Levillain | 4b8f1ec | 2015-08-26 18:34:03 +0100 | [diff] [blame] | 737 | void Trace::DexPcMoved(Thread* thread ATTRIBUTE_UNUSED, |
| 738 | mirror::Object* this_object ATTRIBUTE_UNUSED, |
| 739 | ArtMethod* method, |
| 740 | uint32_t new_dex_pc) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 741 | // We're not recorded to listen to this kind of event, so complain. |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 742 | LOG(ERROR) << "Unexpected dex PC event in tracing " << ArtMethod::PrettyMethod(method) |
| 743 | << " " << new_dex_pc; |
Andreas Gampe | c8ccf68 | 2014-09-29 20:07:43 -0700 | [diff] [blame] | 744 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 745 | |
Roland Levillain | 4b8f1ec | 2015-08-26 18:34:03 +0100 | [diff] [blame] | 746 | void Trace::FieldRead(Thread* thread ATTRIBUTE_UNUSED, |
| 747 | mirror::Object* this_object ATTRIBUTE_UNUSED, |
| 748 | ArtMethod* method, |
| 749 | uint32_t dex_pc, |
| 750 | ArtField* field ATTRIBUTE_UNUSED) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 751 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 752 | // We're not recorded to listen to this kind of event, so complain. |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 753 | LOG(ERROR) << "Unexpected field read event in tracing " << ArtMethod::PrettyMethod(method) |
| 754 | << " " << dex_pc; |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 755 | } |
| 756 | |
Roland Levillain | 4b8f1ec | 2015-08-26 18:34:03 +0100 | [diff] [blame] | 757 | void Trace::FieldWritten(Thread* thread ATTRIBUTE_UNUSED, |
| 758 | mirror::Object* this_object ATTRIBUTE_UNUSED, |
| 759 | ArtMethod* method, |
| 760 | uint32_t dex_pc, |
| 761 | ArtField* field ATTRIBUTE_UNUSED, |
| 762 | const JValue& field_value ATTRIBUTE_UNUSED) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 763 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 764 | // We're not recorded to listen to this kind of event, so complain. |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 765 | LOG(ERROR) << "Unexpected field write event in tracing " << ArtMethod::PrettyMethod(method) |
| 766 | << " " << dex_pc; |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 767 | } |
| 768 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 769 | void Trace::MethodEntered(Thread* thread, mirror::Object* this_object ATTRIBUTE_UNUSED, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 770 | ArtMethod* method, uint32_t dex_pc ATTRIBUTE_UNUSED) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 771 | uint32_t thread_clock_diff = 0; |
| 772 | uint32_t wall_clock_diff = 0; |
| 773 | ReadClocks(thread, &thread_clock_diff, &wall_clock_diff); |
| 774 | LogMethodTraceEvent(thread, method, instrumentation::Instrumentation::kMethodEntered, |
| 775 | thread_clock_diff, wall_clock_diff); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 776 | } |
| 777 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 778 | void Trace::MethodExited(Thread* thread, mirror::Object* this_object ATTRIBUTE_UNUSED, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 779 | ArtMethod* method, uint32_t dex_pc ATTRIBUTE_UNUSED, |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 780 | const JValue& return_value ATTRIBUTE_UNUSED) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 781 | uint32_t thread_clock_diff = 0; |
| 782 | uint32_t wall_clock_diff = 0; |
| 783 | ReadClocks(thread, &thread_clock_diff, &wall_clock_diff); |
| 784 | LogMethodTraceEvent(thread, method, instrumentation::Instrumentation::kMethodExited, |
| 785 | thread_clock_diff, wall_clock_diff); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 786 | } |
| 787 | |
Ian Rogers | 6a3c1fc | 2014-10-31 00:33:20 -0700 | [diff] [blame] | 788 | void Trace::MethodUnwind(Thread* thread, mirror::Object* this_object ATTRIBUTE_UNUSED, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 789 | ArtMethod* method, uint32_t dex_pc ATTRIBUTE_UNUSED) { |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 790 | uint32_t thread_clock_diff = 0; |
| 791 | uint32_t wall_clock_diff = 0; |
| 792 | ReadClocks(thread, &thread_clock_diff, &wall_clock_diff); |
| 793 | LogMethodTraceEvent(thread, method, instrumentation::Instrumentation::kMethodUnwind, |
| 794 | thread_clock_diff, wall_clock_diff); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 795 | } |
| 796 | |
Roland Levillain | 4b8f1ec | 2015-08-26 18:34:03 +0100 | [diff] [blame] | 797 | void Trace::ExceptionCaught(Thread* thread ATTRIBUTE_UNUSED, |
| 798 | mirror::Throwable* exception_object ATTRIBUTE_UNUSED) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 799 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 800 | LOG(ERROR) << "Unexpected exception caught event in tracing"; |
| 801 | } |
| 802 | |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 803 | void Trace::Branch(Thread* /*thread*/, ArtMethod* method, |
| 804 | uint32_t /*dex_pc*/, int32_t /*dex_pc_offset*/) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 805 | REQUIRES_SHARED(Locks::mutator_lock_) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 806 | LOG(ERROR) << "Unexpected branch event in tracing" << ArtMethod::PrettyMethod(method); |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 807 | } |
| 808 | |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 809 | void Trace::InvokeVirtualOrInterface(Thread*, |
| 810 | mirror::Object*, |
| 811 | ArtMethod* method, |
| 812 | uint32_t dex_pc, |
| 813 | ArtMethod*) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame^] | 814 | LOG(ERROR) << "Unexpected invoke event in tracing" << ArtMethod::PrettyMethod(method) |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 815 | << " " << dex_pc; |
| 816 | } |
| 817 | |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 818 | void Trace::ReadClocks(Thread* thread, uint32_t* thread_clock_diff, uint32_t* wall_clock_diff) { |
| 819 | if (UseThreadCpuClock()) { |
| 820 | uint64_t clock_base = thread->GetTraceClockBase(); |
| 821 | if (UNLIKELY(clock_base == 0)) { |
| 822 | // First event, record the base time in the map. |
| 823 | uint64_t time = thread->GetCpuMicroTime(); |
| 824 | thread->SetTraceClockBase(time); |
| 825 | } else { |
| 826 | *thread_clock_diff = thread->GetCpuMicroTime() - clock_base; |
| 827 | } |
| 828 | } |
| 829 | if (UseWallClock()) { |
| 830 | *wall_clock_diff = MicroTime() - start_time_; |
| 831 | } |
| 832 | } |
| 833 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 834 | bool Trace::RegisterMethod(ArtMethod* method) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 835 | mirror::DexCache* dex_cache = method->GetDexCache(); |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 836 | const DexFile* dex_file = dex_cache->GetDexFile(); |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 837 | if (seen_methods_.find(dex_file) == seen_methods_.end()) { |
| 838 | seen_methods_.insert(std::make_pair(dex_file, new DexIndexBitSet())); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 839 | } |
Andreas Gampe | 7526d78 | 2015-06-22 22:53:45 -0700 | [diff] [blame] | 840 | DexIndexBitSet* bit_set = seen_methods_.find(dex_file)->second; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 841 | if (!(*bit_set)[method->GetDexMethodIndex()]) { |
| 842 | bit_set->set(method->GetDexMethodIndex()); |
| 843 | return true; |
| 844 | } |
| 845 | return false; |
| 846 | } |
| 847 | |
| 848 | bool Trace::RegisterThread(Thread* thread) { |
| 849 | pid_t tid = thread->GetTid(); |
| 850 | CHECK_LT(0U, static_cast<uint32_t>(tid)); |
Alex Light | a344f6a | 2016-07-20 10:43:39 -0700 | [diff] [blame] | 851 | CHECK_LT(static_cast<uint32_t>(tid), kMaxThreadIdNumber); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 852 | |
| 853 | if (!(*seen_threads_)[tid]) { |
| 854 | seen_threads_->set(tid); |
| 855 | return true; |
| 856 | } |
| 857 | return false; |
| 858 | } |
| 859 | |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 860 | std::string Trace::GetMethodLine(ArtMethod* method) { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 861 | method = method->GetInterfaceMethodIfProxy(kRuntimePointerSize); |
Alex Light | 0f7e8f5 | 2016-07-19 11:21:32 -0700 | [diff] [blame] | 862 | return StringPrintf("%#x\t%s\t%s\t%s\t%s\n", (EncodeTraceMethod(method) << TraceActionBits), |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 863 | PrettyDescriptor(method->GetDeclaringClassDescriptor()).c_str(), method->GetName(), |
| 864 | method->GetSignature().ToString().c_str(), method->GetDeclaringClassSourceFile()); |
| 865 | } |
| 866 | |
| 867 | void Trace::WriteToBuf(const uint8_t* src, size_t src_size) { |
| 868 | int32_t old_offset = cur_offset_.LoadRelaxed(); |
| 869 | int32_t new_offset = old_offset + static_cast<int32_t>(src_size); |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 870 | if (dchecked_integral_cast<size_t>(new_offset) > buffer_size_) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 871 | // Flush buffer. |
| 872 | if (!trace_file_->WriteFully(buf_.get(), old_offset)) { |
| 873 | PLOG(WARNING) << "Failed streaming a tracing event."; |
| 874 | } |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 875 | |
| 876 | // Check whether the data is too large for the buffer, then write immediately. |
| 877 | if (src_size >= buffer_size_) { |
| 878 | if (!trace_file_->WriteFully(src, src_size)) { |
| 879 | PLOG(WARNING) << "Failed streaming a tracing event."; |
| 880 | } |
| 881 | cur_offset_.StoreRelease(0); // Buffer is empty now. |
| 882 | return; |
| 883 | } |
| 884 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 885 | old_offset = 0; |
| 886 | new_offset = static_cast<int32_t>(src_size); |
| 887 | } |
| 888 | cur_offset_.StoreRelease(new_offset); |
| 889 | // Fill in data. |
| 890 | memcpy(buf_.get() + old_offset, src, src_size); |
| 891 | } |
| 892 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 893 | void Trace::LogMethodTraceEvent(Thread* thread, ArtMethod* method, |
Jeff Hao | c1ff4b7 | 2013-08-19 11:33:10 -0700 | [diff] [blame] | 894 | instrumentation::Instrumentation::InstrumentationEvent event, |
| 895 | uint32_t thread_clock_diff, uint32_t wall_clock_diff) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 896 | // Advance cur_offset_ atomically. |
| 897 | int32_t new_offset; |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 898 | int32_t old_offset = 0; |
| 899 | |
| 900 | // We do a busy loop here trying to acquire the next offset. |
| 901 | if (trace_output_mode_ != TraceOutputMode::kStreaming) { |
| 902 | do { |
| 903 | old_offset = cur_offset_.LoadRelaxed(); |
| 904 | new_offset = old_offset + GetRecordSize(clock_source_); |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 905 | if (static_cast<size_t>(new_offset) > buffer_size_) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 906 | overflow_ = true; |
| 907 | return; |
| 908 | } |
| 909 | } while (!cur_offset_.CompareExchangeWeakSequentiallyConsistent(old_offset, new_offset)); |
| 910 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 911 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 912 | TraceAction action = kTraceMethodEnter; |
| 913 | switch (event) { |
| 914 | case instrumentation::Instrumentation::kMethodEntered: |
| 915 | action = kTraceMethodEnter; |
| 916 | break; |
| 917 | case instrumentation::Instrumentation::kMethodExited: |
| 918 | action = kTraceMethodExit; |
| 919 | break; |
| 920 | case instrumentation::Instrumentation::kMethodUnwind: |
| 921 | action = kTraceUnroll; |
| 922 | break; |
| 923 | default: |
| 924 | UNIMPLEMENTED(FATAL) << "Unexpected event: " << event; |
| 925 | } |
| 926 | |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 927 | uint32_t method_value = EncodeTraceMethodAndAction(method, action); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 928 | |
| 929 | // Write data |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 930 | uint8_t* ptr; |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 931 | static constexpr size_t kPacketSize = 14U; // The maximum size of data in a packet. |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 932 | uint8_t stack_buf[kPacketSize]; // Space to store a packet when in streaming mode. |
| 933 | if (trace_output_mode_ == TraceOutputMode::kStreaming) { |
| 934 | ptr = stack_buf; |
| 935 | } else { |
| 936 | ptr = buf_.get() + old_offset; |
| 937 | } |
| 938 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 939 | Append2LE(ptr, thread->GetTid()); |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 940 | Append4LE(ptr + 2, method_value); |
| 941 | ptr += 6; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 942 | |
| 943 | if (UseThreadCpuClock()) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 944 | Append4LE(ptr, thread_clock_diff); |
| 945 | ptr += 4; |
| 946 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 947 | if (UseWallClock()) { |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 948 | Append4LE(ptr, wall_clock_diff); |
| 949 | } |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 950 | static_assert(kPacketSize == 2 + 4 + 4 + 4, "Packet size incorrect."); |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 951 | |
| 952 | if (trace_output_mode_ == TraceOutputMode::kStreaming) { |
| 953 | MutexLock mu(Thread::Current(), *streaming_lock_); // To serialize writing. |
| 954 | if (RegisterMethod(method)) { |
| 955 | // Write a special block with the name. |
| 956 | std::string method_line(GetMethodLine(method)); |
| 957 | uint8_t buf2[5]; |
| 958 | Append2LE(buf2, 0); |
| 959 | buf2[2] = kOpNewMethod; |
| 960 | Append2LE(buf2 + 3, static_cast<uint16_t>(method_line.length())); |
| 961 | WriteToBuf(buf2, sizeof(buf2)); |
| 962 | WriteToBuf(reinterpret_cast<const uint8_t*>(method_line.c_str()), method_line.length()); |
| 963 | } |
| 964 | if (RegisterThread(thread)) { |
| 965 | // It might be better to postpone this. Threads might not have received names... |
| 966 | std::string thread_name; |
| 967 | thread->GetThreadName(thread_name); |
| 968 | uint8_t buf2[7]; |
| 969 | Append2LE(buf2, 0); |
| 970 | buf2[2] = kOpNewThread; |
| 971 | Append2LE(buf2 + 3, static_cast<uint16_t>(thread->GetTid())); |
| 972 | Append2LE(buf2 + 5, static_cast<uint16_t>(thread_name.length())); |
| 973 | WriteToBuf(buf2, sizeof(buf2)); |
| 974 | WriteToBuf(reinterpret_cast<const uint8_t*>(thread_name.c_str()), thread_name.length()); |
| 975 | } |
| 976 | WriteToBuf(stack_buf, sizeof(stack_buf)); |
| 977 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 978 | } |
| 979 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 980 | void Trace::GetVisitedMethods(size_t buf_size, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 981 | std::set<ArtMethod*>* visited_methods) { |
jeffhao | 2692b57 | 2011-12-16 15:42:28 -0800 | [diff] [blame] | 982 | uint8_t* ptr = buf_.get() + kTraceHeaderLength; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 983 | uint8_t* end = buf_.get() + buf_size; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 984 | |
| 985 | while (ptr < end) { |
Mathieu Chartier | 4d64cd4 | 2015-06-02 16:38:29 -0700 | [diff] [blame] | 986 | uint32_t tmid = ReadBytes(ptr + 2, sizeof(tmid)); |
| 987 | ArtMethod* method = DecodeTraceMethod(tmid); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 988 | visited_methods->insert(method); |
| 989 | ptr += GetRecordSize(clock_source_); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 990 | } |
| 991 | } |
| 992 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 993 | void Trace::DumpMethodList(std::ostream& os, const std::set<ArtMethod*>& visited_methods) { |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 994 | for (const auto& method : visited_methods) { |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 995 | os << GetMethodLine(method); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 996 | } |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 997 | } |
| 998 | |
| 999 | static void DumpThread(Thread* t, void* arg) { |
Elliott Hughes | ffb465f | 2012-03-01 18:46:05 -0800 | [diff] [blame] | 1000 | std::ostream& os = *reinterpret_cast<std::ostream*>(arg); |
| 1001 | std::string name; |
| 1002 | t->GetThreadName(name); |
| 1003 | os << t->GetTid() << "\t" << name << "\n"; |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1004 | } |
| 1005 | |
| 1006 | void Trace::DumpThreadList(std::ostream& os) { |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1007 | Thread* self = Thread::Current(); |
Jeff Hao | e094b87 | 2014-10-14 13:12:01 -0700 | [diff] [blame] | 1008 | for (auto it : exited_threads_) { |
| 1009 | os << it.first << "\t" << it.second << "\n"; |
| 1010 | } |
Ian Rogers | 81d425b | 2012-09-27 16:03:43 -0700 | [diff] [blame] | 1011 | Locks::thread_list_lock_->AssertNotHeld(self); |
| 1012 | MutexLock mu(self, *Locks::thread_list_lock_); |
jeffhao | a9ef3fd | 2011-12-13 18:33:43 -0800 | [diff] [blame] | 1013 | Runtime::Current()->GetThreadList()->ForEach(DumpThread, &os); |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 1014 | } |
| 1015 | |
Jeff Hao | e094b87 | 2014-10-14 13:12:01 -0700 | [diff] [blame] | 1016 | void Trace::StoreExitingThreadInfo(Thread* thread) { |
| 1017 | MutexLock mu(thread, *Locks::trace_lock_); |
| 1018 | if (the_trace_ != nullptr) { |
| 1019 | std::string name; |
| 1020 | thread->GetThreadName(name); |
Andreas Gampe | a1785c5 | 2014-11-25 20:40:08 -0800 | [diff] [blame] | 1021 | // The same thread/tid may be used multiple times. As SafeMap::Put does not allow to override |
| 1022 | // a previous mapping, use SafeMap::Overwrite. |
| 1023 | the_trace_->exited_threads_.Overwrite(thread->GetTid(), name); |
Jeff Hao | e094b87 | 2014-10-14 13:12:01 -0700 | [diff] [blame] | 1024 | } |
| 1025 | } |
| 1026 | |
Andreas Gampe | 40da286 | 2015-02-27 12:49:04 -0800 | [diff] [blame] | 1027 | Trace::TraceOutputMode Trace::GetOutputMode() { |
| 1028 | MutexLock mu(Thread::Current(), *Locks::trace_lock_); |
| 1029 | CHECK(the_trace_ != nullptr) << "Trace output mode requested, but no trace currently running"; |
| 1030 | return the_trace_->trace_output_mode_; |
| 1031 | } |
| 1032 | |
| 1033 | Trace::TraceMode Trace::GetMode() { |
| 1034 | MutexLock mu(Thread::Current(), *Locks::trace_lock_); |
| 1035 | CHECK(the_trace_ != nullptr) << "Trace mode requested, but no trace currently running"; |
| 1036 | return the_trace_->trace_mode_; |
| 1037 | } |
| 1038 | |
Andreas Gampe | e34a42c | 2015-04-25 14:44:29 -0700 | [diff] [blame] | 1039 | size_t Trace::GetBufferSize() { |
| 1040 | MutexLock mu(Thread::Current(), *Locks::trace_lock_); |
| 1041 | CHECK(the_trace_ != nullptr) << "Trace mode requested, but no trace currently running"; |
| 1042 | return the_trace_->buffer_size_; |
| 1043 | } |
| 1044 | |
Mathieu Chartier | 7778b88 | 2015-10-05 16:41:10 -0700 | [diff] [blame] | 1045 | bool Trace::IsTracingEnabled() { |
| 1046 | MutexLock mu(Thread::Current(), *Locks::trace_lock_); |
| 1047 | return the_trace_ != nullptr; |
| 1048 | } |
| 1049 | |
jeffhao | e343b76 | 2011-12-05 16:36:44 -0800 | [diff] [blame] | 1050 | } // namespace art |