MainThreadInvoker queues both a Gecko runnable and an APC to the main thread to deal with different ways in which the main thread can block.
However, the main thread doesn't check for APCs very often any more.
This means that the APC's reference to the SyncRunnable doesn't get cleaned up for a long time, thus leaking memory.
To work around this, we:
1. Queue an APC wich does the actual work.
2. Post a Gecko runnable (which always runs).
If the APC hasn't run, the Gecko runnable runs it.
Otherwise, it does nothing.
MozReview-Commit-ID: L0P4rMBnlaZ
This patch adds two additional fields to each mscom log entry: The first is
the duration, in microseconds, of time spent in mscom overhead when executing
a call from the MTA on behalf of a remote client.
The second field is the duration, in microseconds, of time spent actually
executing the method within Gecko itself.
(In other words, the sum of the two fields will equal the total duration of
time spent executing the call.)
MozReview-Commit-ID: EhFieEPrhE5
Currently the Gecko Profiler defines a moderate amount of stuff when
MOZ_GECKO_PROFILER is undefined. It also #includes various headers, including
JS ones. This is making it difficult to separate Gecko's media stack for
inclusion in Servo.
This patch greatly simplifies how things are exposed. The starting point is:
- GeckoProfiler.h can be #included unconditionally;
- everything else from the profiler must be guarded by MOZ_GECKO_PROFILER.
In practice this introduces way too many #ifdefs, so the patch loosens it by
adding no-op macros for a number of the most common operations.
The net result is that #ifdefs and macros are used a bit more, but almost
nothing is exposed in non-MOZ_GECKO_PROFILER builds (including
ProfilerMarkerPayload.h and GeckoProfiler.h), and understanding what is exposed
is much simpler than before.
Note also that in BHR, ThreadStackHelper is now entirely absent in
non-MOZ_GECKO_PROFILER builds.
When removing our Windows message loop pumping code in the content
process, a11y code on the MTA thread must have some way to wake up the
main thread. The main thread could be blocked either on a conditional
variable waiting for a Gecko event, or it could be blocked waiting on
a Windows HANDLE in IPC code (doing a sync message send). In the
former case, we wake it up by posting an event to the main thread. In
the latter case, we continue to use the asynchronous procedure call
mechanism.
MozReview-Commit-ID: FN6KWaGo9Zl
This patch does the following renamings, which increase consistency.
- GeckoProfilerInitRAII -> AutoProfilerInit
- GeckoProfilerThread{Sleep,Wake}RAII -> AutoProfilerThread{Sleep,Wake}
- GeckoProfilerTracingRAII -> AutoProfilerTracing
- AutoProfilerRegister -> AutoProfilerRegisterThread
- ProfilerStackFrameRAII -> AutoProfilerLabel
- nsJSUtils::mProfilerRAII -> nsJSUtils::mAutoProfilerLabel
Plus a few other minor ones (e.g. local variables).
The patch also add MOZ_GUARD_OBJECT macros to all the profiler RAII classes
that lack them, and does some minor whitespace reformatting.
The new names make it clearer that these actions apply to just one thread.
- profiler_sleep_start() --> profiler_thread_sleep()
- profiler_sleep_end() --> profiler_thread_wake()
- profiler_is_sleeping() --> profiler_thread_is_sleeping()
- GeckoProfilerSleepRAII --> GeckoProfilerThreadSleepRAII
- GeckoProfilerWakeRAII --> GeckoProfilerThreadWakeRAII
This change avoids lots of false positives for Coverity's CHECKED_RETURN
warning, caused by NS_WARN_IF's current use in both statement-style and
expression-style.
In the case where the code within the NS_WARN_IF has side-effects, I made the
following change.
> NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));
> -->
> Unused << NS_WARN_IF(NS_FAILED(FunctionWithSideEffects()));
In the case where the code within the NS_WARN_IF lacks side-effects, I made the
following change.
> NS_WARN_IF(!condWithoutSideEffects);
> -->
> NS_WARNING_ASSERTION(condWithoutSideEffects, "msg");
This has two improvements.
- The condition is not evaluated in non-debug builds.
- The sense of the condition is inverted to the familiar "this condition should
be true" sense used in assertions.
A common variation on the side-effect-free case is the following.
> nsresult rv = Fn();
> NS_WARN_IF_(NS_FAILED(rv));
> -->
> DebugOnly<nsresult rv> = Fn();
> NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "Fn failed");
