mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
100 lines
2.6 KiB
C++
100 lines
2.6 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/. */
|
|
|
|
#if !defined(MediaTimer_h_)
|
|
#define MediaTimer_h_
|
|
|
|
#include "MediaPromise.h"
|
|
|
|
#include <queue>
|
|
|
|
#include "nsITimer.h"
|
|
#include "nsRefPtr.h"
|
|
|
|
#include "mozilla/Monitor.h"
|
|
#include "mozilla/TimeStamp.h"
|
|
|
|
namespace mozilla {
|
|
|
|
// This promise type is only exclusive because so far there isn't a reason for
|
|
// it not to be. Feel free to change that.
|
|
typedef MediaPromise<bool, bool, /* IsExclusive = */ true> MediaTimerPromise;
|
|
|
|
// Timers only know how to fire at a given thread, which creates an impedence
|
|
// mismatch with code that operates with MediaTaskQueues. This class solves
|
|
// that mismatch with a dedicated (but shared) thread and a nice MediaPromise-y
|
|
// interface.
|
|
class MediaTimer
|
|
{
|
|
public:
|
|
MediaTimer();
|
|
|
|
// We use a release with a custom Destroy().
|
|
NS_IMETHOD_(MozExternalRefCountType) AddRef(void);
|
|
NS_IMETHOD_(MozExternalRefCountType) Release(void);
|
|
|
|
nsRefPtr<MediaTimerPromise> WaitUntil(const TimeStamp& aTimeStamp, const char* aCallSite);
|
|
|
|
private:
|
|
virtual ~MediaTimer() { MOZ_ASSERT(OnMediaTimerThread()); }
|
|
|
|
void DispatchDestroy(); // Invoked by Release on an arbitrary thread.
|
|
void Destroy(); // Runs on the timer thread.
|
|
|
|
bool OnMediaTimerThread();
|
|
void ScheduleUpdate();
|
|
void Update();
|
|
void UpdateLocked();
|
|
|
|
static void TimerCallback(nsITimer* aTimer, void* aClosure);
|
|
void TimerFired();
|
|
void ArmTimer(const TimeStamp& aTarget, const TimeStamp& aNow);
|
|
|
|
bool TimerIsArmed()
|
|
{
|
|
return !mCurrentTimerTarget.IsNull();
|
|
}
|
|
|
|
void CancelTimerIfArmed()
|
|
{
|
|
MOZ_ASSERT(OnMediaTimerThread());
|
|
if (TimerIsArmed()) {
|
|
mTimer->Cancel();
|
|
mCurrentTimerTarget = TimeStamp();
|
|
}
|
|
}
|
|
|
|
|
|
struct Entry
|
|
{
|
|
TimeStamp mTimeStamp;
|
|
nsRefPtr<MediaTimerPromise::Private> mPromise;
|
|
|
|
explicit Entry(const TimeStamp& aTimeStamp, const char* aCallSite)
|
|
: mTimeStamp(aTimeStamp)
|
|
, mPromise(new MediaTimerPromise::Private(aCallSite))
|
|
{}
|
|
|
|
bool operator<(const Entry& aOther) const
|
|
{
|
|
return mTimeStamp < aOther.mTimeStamp;
|
|
}
|
|
};
|
|
|
|
ThreadSafeAutoRefCnt mRefCnt;
|
|
NS_DECL_OWNINGTHREAD
|
|
nsCOMPtr<nsIEventTarget> mThread;
|
|
std::priority_queue<Entry> mEntries;
|
|
Monitor mMonitor;
|
|
nsCOMPtr<nsITimer> mTimer;
|
|
TimeStamp mCurrentTimerTarget;
|
|
bool mUpdateScheduled;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif
|