mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-31 22:25:30 +00:00
94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim:set ts=2 sw=2 sts=2 et cindent: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef GECKO_TASK_TRACER_H
|
|
#define GECKO_TASK_TRACER_H
|
|
|
|
#include "nsCOMPtr.h"
|
|
|
|
/**
|
|
* TaskTracer provides a way to trace the correlation between different tasks
|
|
* across threads and processes. Unlike sampling based profilers, TaskTracer can
|
|
* tell you where a task is dispatched from, what its original source was, how
|
|
* long it waited in the event queue, and how long it took to execute.
|
|
*
|
|
* Source Events are usually some kinds of I/O events we're interested in, such
|
|
* as touch events, timer events, network events, etc. When a source event is
|
|
* created, TaskTracer records the entire chain of Tasks and nsRunnables as they
|
|
* are dispatched to different threads and processes. It records latency,
|
|
* execution time, etc. for each Task and nsRunnable that chains back to the
|
|
* original source event.
|
|
*/
|
|
|
|
class Task;
|
|
class nsIRunnable;
|
|
class nsCString;
|
|
template <class> class nsTArray;
|
|
|
|
namespace mozilla {
|
|
|
|
class TimeStamp;
|
|
|
|
namespace tasktracer {
|
|
|
|
enum {
|
|
FORKED_AFTER_NUWA = 1 << 0
|
|
};
|
|
void InitTaskTracer(uint32_t aFlags = 0);
|
|
void ShutdownTaskTracer();
|
|
|
|
class FakeTracedTask;
|
|
|
|
enum SourceEventType {
|
|
Unknown = 0,
|
|
Touch,
|
|
Mouse,
|
|
Key,
|
|
Bluetooth,
|
|
Unixsocket,
|
|
Wifi
|
|
};
|
|
|
|
class AutoSourceEvent
|
|
{
|
|
public:
|
|
AutoSourceEvent(SourceEventType aType);
|
|
~AutoSourceEvent();
|
|
};
|
|
|
|
// Add a label to the currently running task, aFormat is the message to log,
|
|
// followed by corresponding parameters.
|
|
void AddLabel(const char* aFormat, ...);
|
|
|
|
void StartLogging();
|
|
void StopLogging();
|
|
nsTArray<nsCString>* GetLoggedData(TimeStamp aStartTime);
|
|
|
|
// Returns the timestamp when Task Tracer is enabled in this process.
|
|
const PRTime GetStartTime();
|
|
|
|
/**
|
|
* Internal functions.
|
|
*/
|
|
|
|
Task* CreateTracedTask(Task* aTask);
|
|
|
|
already_AddRefed<nsIRunnable> CreateTracedRunnable(nsIRunnable* aRunnable);
|
|
|
|
already_AddRefed<FakeTracedTask> CreateFakeTracedTask(int* aVptr);
|
|
|
|
// Free the TraceInfo allocated on a thread's TLS. Currently we are wrapping
|
|
// tasks running on nsThreads and base::thread, so FreeTraceInfo is called at
|
|
// where nsThread and base::thread release themselves.
|
|
void FreeTraceInfo();
|
|
|
|
const char* GetJSLabelPrefix();
|
|
|
|
} // namespace tasktracer
|
|
} // namespace mozilla.
|
|
|
|
#endif
|