mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-28 23:31:56 +00:00
86 lines
2.3 KiB
Plaintext
86 lines
2.3 KiB
Plaintext
/* 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/. */
|
|
|
|
#include <Cocoa/Cocoa.h>
|
|
#include "CustomCocoaEvents.h"
|
|
#include <Foundation/NSAutoreleasePool.h>
|
|
#include <mozilla/CondVar.h>
|
|
#include <mozilla/Mutex.h>
|
|
#include "mozilla/WidgetTraceEvent.h"
|
|
|
|
using mozilla::CondVar;
|
|
using mozilla::Mutex;
|
|
using mozilla::MutexAutoLock;
|
|
|
|
namespace {
|
|
|
|
Mutex* sMutex = NULL;
|
|
CondVar* sCondVar = NULL;
|
|
bool sTracerProcessed = false;
|
|
|
|
}
|
|
|
|
namespace mozilla {
|
|
|
|
bool InitWidgetTracing()
|
|
{
|
|
sMutex = new Mutex("Event tracer thread mutex");
|
|
sCondVar = new CondVar(*sMutex, "Event tracer thread condvar");
|
|
return sMutex && sCondVar;
|
|
}
|
|
|
|
void CleanUpWidgetTracing()
|
|
{
|
|
delete sMutex;
|
|
delete sCondVar;
|
|
sMutex = NULL;
|
|
sCondVar = NULL;
|
|
}
|
|
|
|
// This function is called from the main (UI) thread.
|
|
void SignalTracerThread()
|
|
{
|
|
if (!sMutex || !sCondVar)
|
|
return;
|
|
MutexAutoLock lock(*sMutex);
|
|
if (!sTracerProcessed) {
|
|
sTracerProcessed = true;
|
|
sCondVar->Notify();
|
|
}
|
|
}
|
|
|
|
// This function is called from the background tracer thread.
|
|
bool FireAndWaitForTracerEvent()
|
|
{
|
|
MOZ_ASSERT(sMutex && sCondVar, "Tracing not initialized!");
|
|
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
|
|
MutexAutoLock lock(*sMutex);
|
|
if (sTracerProcessed) {
|
|
// Things are out of sync. This is likely because we're in
|
|
// the middle of shutting down. Just return false and hope the
|
|
// tracer thread is quitting anyway.
|
|
return false;
|
|
}
|
|
|
|
// Post an application-defined event to the main thread's event queue
|
|
// and wait for it to get processed.
|
|
[NSApp postEvent:[NSEvent otherEventWithType:NSApplicationDefined
|
|
location:NSMakePoint(0,0)
|
|
modifierFlags:0
|
|
timestamp:0
|
|
windowNumber:0
|
|
context:NULL
|
|
subtype:kEventSubtypeTrace
|
|
data1:0
|
|
data2:0]
|
|
atStart:NO];
|
|
while (!sTracerProcessed)
|
|
sCondVar->Wait();
|
|
sTracerProcessed = false;
|
|
[pool release];
|
|
return true;
|
|
}
|
|
|
|
} // namespace mozilla
|