mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-30 00:01:50 +00:00
111 lines
3.3 KiB
C++
111 lines
3.3 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* The Mozilla Foundation.
|
|
* Portions created by the Initial Developer are Copyright (C) 2011
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Ted Mielczarek <ted.mielczarek@gmail.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "mozilla/WidgetTraceEvent.h"
|
|
|
|
#include <glib.h>
|
|
#include <mozilla/CondVar.h>
|
|
#include <mozilla/Mutex.h>
|
|
#include <stdio.h>
|
|
|
|
using mozilla::CondVar;
|
|
using mozilla::Mutex;
|
|
using mozilla::MutexAutoLock;
|
|
|
|
namespace {
|
|
|
|
Mutex* sMutex = NULL;
|
|
CondVar* sCondVar = NULL;
|
|
bool sTracerProcessed = false;
|
|
|
|
// This function is called from the main (UI) thread.
|
|
gboolean TracerCallback(gpointer data)
|
|
{
|
|
mozilla::SignalTracerThread();
|
|
return FALSE;
|
|
}
|
|
|
|
} // namespace
|
|
|
|
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 background tracer thread.
|
|
bool FireAndWaitForTracerEvent()
|
|
{
|
|
NS_ABORT_IF_FALSE(sMutex && sCondVar, "Tracing not initialized!");
|
|
|
|
// Send a default-priority idle event through the
|
|
// event loop, and wait for it to finish.
|
|
MutexAutoLock lock(*sMutex);
|
|
NS_ABORT_IF_FALSE(!sTracerProcessed, "Tracer synchronization state is wrong");
|
|
g_idle_add_full(G_PRIORITY_DEFAULT,
|
|
TracerCallback,
|
|
NULL,
|
|
NULL);
|
|
while (!sTracerProcessed)
|
|
sCondVar->Wait();
|
|
sTracerProcessed = false;
|
|
return true;
|
|
}
|
|
|
|
void SignalTracerThread()
|
|
{
|
|
if (!sMutex || !sCondVar)
|
|
return;
|
|
MutexAutoLock lock(*sMutex);
|
|
NS_ABORT_IF_FALSE(!sTracerProcessed, "Tracer synchronization state is wrong");
|
|
sTracerProcessed = true;
|
|
sCondVar->Notify();
|
|
}
|
|
|
|
} // namespace mozilla
|