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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/activity_tracker.h" | 7 #include "base/debug/activity_tracker.h" |
8 #include "base/debug/alias.h" | 8 #include "base/debug/alias.h" |
9 #include "base/pending_task.h" | 9 #include "base/pending_task.h" |
10 #include "base/trace_event/trace_event.h" | 10 #include "base/trace_event/trace_event.h" |
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21 | 21 |
22 void TaskAnnotator::DidQueueTask(const char* queue_function, | 22 void TaskAnnotator::DidQueueTask(const char* queue_function, |
23 const PendingTask& pending_task) { | 23 const PendingTask& pending_task) { |
24 TRACE_EVENT_WITH_FLOW0(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), | 24 TRACE_EVENT_WITH_FLOW0(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), |
25 queue_function, | 25 queue_function, |
26 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), | 26 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), |
27 TRACE_EVENT_FLAG_FLOW_OUT); | 27 TRACE_EVENT_FLAG_FLOW_OUT); |
28 } | 28 } |
29 | 29 |
30 void TaskAnnotator::RunTask(const char* queue_function, | 30 void TaskAnnotator::RunTask(const char* queue_function, |
31 const PendingTask& pending_task) { | 31 PendingTask* pending_task) { |
32 ScopedTaskRunActivity task_activity(pending_task); | 32 ScopedTaskRunActivity task_activity(*pending_task); |
33 | 33 |
34 tracked_objects::TaskStopwatch stopwatch; | 34 tracked_objects::TaskStopwatch stopwatch; |
35 stopwatch.Start(); | 35 stopwatch.Start(); |
36 tracked_objects::Duration queue_duration = | 36 tracked_objects::Duration queue_duration = |
37 stopwatch.StartTime() - pending_task.EffectiveTimePosted(); | 37 stopwatch.StartTime() - pending_task->EffectiveTimePosted(); |
38 | 38 |
39 TRACE_EVENT_WITH_FLOW1(TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), | 39 TRACE_EVENT_WITH_FLOW1( |
40 queue_function, | 40 TRACE_DISABLED_BY_DEFAULT("toplevel.flow"), queue_function, |
41 TRACE_ID_MANGLE(GetTaskTraceID(pending_task)), | 41 TRACE_ID_MANGLE(GetTaskTraceID(*pending_task)), TRACE_EVENT_FLAG_FLOW_IN, |
42 TRACE_EVENT_FLAG_FLOW_IN, | 42 "queue_duration", queue_duration.InMilliseconds()); |
43 "queue_duration", | |
44 queue_duration.InMilliseconds()); | |
45 | 43 |
46 // Before running the task, store the program counter where it was posted | 44 // Before running the task, store the program counter where it was posted |
47 // and deliberately alias it to ensure it is on the stack if the task | 45 // and deliberately alias it to ensure it is on the stack if the task |
48 // crashes. Be careful not to assume that the variable itself will have the | 46 // crashes. Be careful not to assume that the variable itself will have the |
49 // expected value when displayed by the optimizer in an optimized build. | 47 // expected value when displayed by the optimizer in an optimized build. |
50 // Look at a memory dump of the stack. | 48 // Look at a memory dump of the stack. |
51 const void* program_counter = pending_task.posted_from.program_counter(); | 49 const void* program_counter = pending_task->posted_from.program_counter(); |
52 debug::Alias(&program_counter); | 50 debug::Alias(&program_counter); |
53 | 51 |
54 pending_task.task.Run(); | 52 std::move(pending_task->task).Run(); |
fdoray
2016/10/06 17:37:22
It's annoying that Run() can only be called on an
tzik
2016/10/13 05:58:04
Per discussion on the mail thread:
In the new sema
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55 | 53 |
56 stopwatch.Stop(); | 54 stopwatch.Stop(); |
57 tracked_objects::ThreadData::TallyRunOnNamedThreadIfTracking( | 55 tracked_objects::ThreadData::TallyRunOnNamedThreadIfTracking(*pending_task, |
58 pending_task, stopwatch); | 56 stopwatch); |
59 } | 57 } |
60 | 58 |
61 uint64_t TaskAnnotator::GetTaskTraceID(const PendingTask& task) const { | 59 uint64_t TaskAnnotator::GetTaskTraceID(const PendingTask& task) const { |
62 return (static_cast<uint64_t>(task.sequence_num) << 32) | | 60 return (static_cast<uint64_t>(task.sequence_num) << 32) | |
63 ((static_cast<uint64_t>(reinterpret_cast<intptr_t>(this)) << 32) >> | 61 ((static_cast<uint64_t>(reinterpret_cast<intptr_t>(this)) << 32) >> |
64 32); | 62 32); |
65 } | 63 } |
66 | 64 |
67 } // namespace debug | 65 } // namespace debug |
68 } // namespace base | 66 } // namespace base |
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