The Tor Browser: tools/profiler/GeckoTaskTracer.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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/. */

     7 #ifndef GECKO_TASK_TRACER_H

     8 #define GECKO_TASK_TRACER_H

    10 #include "nsCOMPtr.h"

    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  */

    26 class Task;

    27 class nsIRunnable;

    29 namespace mozilla {

    30 namespace tasktracer {

    32 class FakeTracedTask;

    34 enum SourceEventType {

    35   UNKNOWN = 0,

    36   TOUCH,

    37   MOUSE,

    38   KEY,

    39   BLUETOOTH,

    40   UNIXSOCKET,

    41   WIFI

    42 };

    44 class AutoSourceEvent

    45 {

    46 public:

    47   AutoSourceEvent(SourceEventType aType);

    48   ~AutoSourceEvent();

    49 };

    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, ...);

    55 /**

    56  * Internal functions.

    57  */

    59 Task* CreateTracedTask(Task* aTask);

    61 already_AddRefed<nsIRunnable> CreateTracedRunnable(nsIRunnable* aRunnable);

    63 FakeTracedTask* CreateFakeTracedTask(int* aVptr);

    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();

    70 } // namespace tasktracer

    71 } // namespace mozilla.

    73 #endif

The Tor Browser / file revision

tools/profiler/GeckoTaskTracer.h@97036ab72558

tools/profiler/GeckoTaskTracer.h