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comparison: tools/profiler/GeckoTaskTracer.h
tools/profiler/GeckoTaskTracer.h
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef GECKO_TASK_TRACER_H | |
| 8 #define GECKO_TASK_TRACER_H | |
| 9 | |
| 10 #include "nsCOMPtr.h" | |
| 11 | |
| 12 /** | |
| 13 * TaskTracer provides a way to trace the correlation between different tasks | |
| 14 * across threads and processes. Unlike sampling based profilers, TaskTracer can | |
| 15 * tell you where a task is dispatched from, what its original source was, how | |
| 16 * long it waited in the event queue, and how long it took to execute. | |
| 17 * | |
| 18 * Source Events are usually some kinds of I/O events we're interested in, such | |
| 19 * as touch events, timer events, network events, etc. When a source event is | |
| 20 * created, TaskTracer records the entire chain of Tasks and nsRunnables as they | |
| 21 * are dispatched to different threads and processes. It records latency, | |
| 22 * execution time, etc. for each Task and nsRunnable that chains back to the | |
| 23 * original source event. | |
| 24 */ | |
| 25 | |
| 26 class Task; | |
| 27 class nsIRunnable; | |
| 28 | |
| 29 namespace mozilla { | |
| 30 namespace tasktracer { | |
| 31 | |
| 32 class FakeTracedTask; | |
| 33 | |
| 34 enum SourceEventType { | |
| 35 UNKNOWN = 0, | |
| 36 TOUCH, | |
| 37 MOUSE, | |
| 38 KEY, | |
| 39 BLUETOOTH, | |
| 40 UNIXSOCKET, | |
| 41 WIFI | |
| 42 }; | |
| 43 | |
| 44 class AutoSourceEvent | |
| 45 { | |
| 46 public: | |
| 47 AutoSourceEvent(SourceEventType aType); | |
| 48 ~AutoSourceEvent(); | |
| 49 }; | |
| 50 | |
| 51 // Add a label to the currently running task, aFormat is the message to log, | |
| 52 // followed by corresponding parameters. | |
| 53 void AddLabel(const char* aFormat, ...); | |
| 54 | |
| 55 /** | |
| 56 * Internal functions. | |
| 57 */ | |
| 58 | |
| 59 Task* CreateTracedTask(Task* aTask); | |
| 60 | |
| 61 already_AddRefed<nsIRunnable> CreateTracedRunnable(nsIRunnable* aRunnable); | |
| 62 | |
| 63 FakeTracedTask* CreateFakeTracedTask(int* aVptr); | |
| 64 | |
| 65 // Free the TraceInfo allocated on a thread's TLS. Currently we are wrapping | |
| 66 // tasks running on nsThreads and base::thread, so FreeTraceInfo is called at | |
| 67 // where nsThread and base::thread release themselves. | |
| 68 void FreeTraceInfo(); | |
| 69 | |
| 70 } // namespace tasktracer | |
| 71 } // namespace mozilla. | |
| 72 | |
| 73 #endif |
