gecko-dev/xpcom/threads/EventQueue.cpp

69 строки
1.5 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/EventQueue.h"
#include "nsIRunnable.h"
using namespace mozilla;
EventQueue::EventQueue()
{
}
void
EventQueue::PutEvent(already_AddRefed<nsIRunnable>&& aEvent,
EventPriority aPriority,
const MutexAutoLock& aProofOfLock)
{
nsCOMPtr<nsIRunnable> event(aEvent);
mQueue.Push(Move(event));
}
already_AddRefed<nsIRunnable>
EventQueue::GetEvent(EventPriority* aPriority,
const MutexAutoLock& aProofOfLock)
{
if (mQueue.IsEmpty()) {
return nullptr;
}
if (aPriority) {
*aPriority = EventPriority::Normal;
}
nsCOMPtr<nsIRunnable> result = mQueue.Pop();
return result.forget();
}
bool
EventQueue::IsEmpty(const MutexAutoLock& aProofOfLock)
{
return mQueue.IsEmpty();
}
bool
EventQueue::HasReadyEvent(const MutexAutoLock& aProofOfLock)
{
return !IsEmpty(aProofOfLock);
}
already_AddRefed<nsIRunnable>
EventQueue::PeekEvent(const MutexAutoLock& aProofOfLock)
{
if (mQueue.IsEmpty()) {
return nullptr;
}
nsCOMPtr<nsIRunnable> result = mQueue.FirstElement();
return result.forget();
}
size_t
EventQueue::Count(const MutexAutoLock& aProofOfLock) const
{
return mQueue.Count();
}