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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/debug/task_annotator.h" | 5 #include "base/debug/task_annotator.h" |
6 | 6 |
7 #include "base/debug/alias.h" | 7 #include "base/debug/alias.h" |
8 #include "base/pending_task.h" | 8 #include "base/pending_task.h" |
9 #include "base/trace_event/trace_event.h" | 9 #include "base/trace_event/trace_event.h" |
10 #include "base/tracked_objects.h" | 10 #include "base/tracked_objects.h" |
11 | 11 |
12 namespace base { | 12 namespace base { |
13 namespace debug { | 13 namespace debug { |
14 | 14 |
15 TaskAnnotator::TaskAnnotator() { | 15 TaskAnnotator::TaskAnnotator() { |
16 } | 16 } |
17 | 17 |
18 TaskAnnotator::~TaskAnnotator() { | 18 TaskAnnotator::~TaskAnnotator() { |
19 } | 19 } |
20 | 20 |
21 void TaskAnnotator::DidQueueTask(const char* queue_function, | 21 void TaskAnnotator::DidQueueTask(const char* queue_function, |
22 const PendingTask& pending_task) { | 22 const PendingTask& pending_task) { |
23 TRACE_EVENT_FLOW_BEGIN0(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), | 23 TRACE_EVENT_WITH_FLOW0(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), |
24 queue_function, | 24 queue_function, |
25 TRACE_ID_MANGLE(GetTaskTraceID(pending_task))); | 25 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), |
| 26 TRACE_EVENT_FLAG_FLOW_OUT); |
26 } | 27 } |
27 | 28 |
28 void TaskAnnotator::RunTask(const char* queue_function, | 29 void TaskAnnotator::RunTask(const char* queue_function, |
29 const PendingTask& pending_task) { | 30 const PendingTask& pending_task) { |
30 tracked_objects::TaskStopwatch stopwatch; | 31 tracked_objects::TaskStopwatch stopwatch; |
31 stopwatch.Start(); | 32 stopwatch.Start(); |
32 tracked_objects::Duration queue_duration = | 33 tracked_objects::Duration queue_duration = |
33 stopwatch.StartTime() - pending_task.EffectiveTimePosted(); | 34 stopwatch.StartTime() - pending_task.EffectiveTimePosted(); |
34 | 35 |
35 TRACE_EVENT_FLOW_END1(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), | 36 TRACE_EVENT_WITH_FLOW1(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), |
36 queue_function, | 37 queue_function, |
37 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), | 38 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), |
38 "queue_duration", | 39 TRACE_EVENT_FLAG_FLOW_IN, |
39 queue_duration.InMilliseconds()); | 40 "queue_duration", |
| 41 queue_duration.InMilliseconds()); |
40 | 42 |
41 // Before running the task, store the program counter where it was posted | 43 // Before running the task, store the program counter where it was posted |
42 // and deliberately alias it to ensure it is on the stack if the task | 44 // and deliberately alias it to ensure it is on the stack if the task |
43 // crashes. Be careful not to assume that the variable itself will have the | 45 // crashes. Be careful not to assume that the variable itself will have the |
44 // expected value when displayed by the optimizer in an optimized build. | 46 // expected value when displayed by the optimizer in an optimized build. |
45 // Look at a memory dump of the stack. | 47 // Look at a memory dump of the stack. |
46 const void* program_counter = pending_task.posted_from.program_counter(); | 48 const void* program_counter = pending_task.posted_from.program_counter(); |
47 debug::Alias(&program_counter); | 49 debug::Alias(&program_counter); |
48 | 50 |
49 pending_task.task.Run(); | 51 pending_task.task.Run(); |
50 | 52 |
51 stopwatch.Stop(); | 53 stopwatch.Stop(); |
52 tracked_objects::ThreadData::TallyRunOnNamedThreadIfTracking( | 54 tracked_objects::ThreadData::TallyRunOnNamedThreadIfTracking( |
53 pending_task, stopwatch); | 55 pending_task, stopwatch); |
54 } | 56 } |
55 | 57 |
56 uint64 TaskAnnotator::GetTaskTraceID(const PendingTask& task) const { | 58 uint64 TaskAnnotator::GetTaskTraceID(const PendingTask& task) const { |
57 return (static_cast<uint64>(task.sequence_num) << 32) | | 59 return (static_cast<uint64>(task.sequence_num) << 32) | |
58 ((static_cast<uint64>(reinterpret_cast<intptr_t>(this)) << 32) >> 32); | 60 ((static_cast<uint64>(reinterpret_cast<intptr_t>(this)) << 32) >> 32); |
59 } | 61 } |
60 | 62 |
61 } // namespace debug | 63 } // namespace debug |
62 } // namespace base | 64 } // namespace base |
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