зеркало из https://github.com/mozilla/gecko-dev.git
61 строка
1.8 KiB
C++
61 строка
1.8 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 "SameProcessMessageQueue.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::dom;
|
|
|
|
SameProcessMessageQueue* SameProcessMessageQueue::sSingleton;
|
|
|
|
SameProcessMessageQueue::SameProcessMessageQueue() = default;
|
|
|
|
SameProcessMessageQueue::~SameProcessMessageQueue() {
|
|
// This code should run during shutdown, and we should already have pumped the
|
|
// event loop. So we should only see messages here if someone is sending
|
|
// messages pretty late in shutdown.
|
|
NS_WARNING_ASSERTION(mQueue.IsEmpty(),
|
|
"Shouldn't send messages during shutdown");
|
|
sSingleton = nullptr;
|
|
}
|
|
|
|
void SameProcessMessageQueue::Push(Runnable* aRunnable) {
|
|
mQueue.AppendElement(aRunnable);
|
|
NS_DispatchToCurrentThread(aRunnable);
|
|
}
|
|
|
|
void SameProcessMessageQueue::Flush() {
|
|
const nsTArray<RefPtr<Runnable>> queue = std::move(mQueue);
|
|
for (size_t i = 0; i < queue.Length(); i++) {
|
|
queue[i]->Run();
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
SameProcessMessageQueue* SameProcessMessageQueue::Get() {
|
|
if (!sSingleton) {
|
|
sSingleton = new SameProcessMessageQueue();
|
|
}
|
|
return sSingleton;
|
|
}
|
|
|
|
SameProcessMessageQueue::Runnable::Runnable() : mDispatched(false) {}
|
|
|
|
NS_IMPL_ISUPPORTS(SameProcessMessageQueue::Runnable, nsIRunnable)
|
|
|
|
nsresult SameProcessMessageQueue::Runnable::Run() {
|
|
if (mDispatched) {
|
|
return NS_OK;
|
|
}
|
|
|
|
SameProcessMessageQueue* queue = SameProcessMessageQueue::Get();
|
|
queue->mQueue.RemoveElement(this);
|
|
|
|
mDispatched = true;
|
|
return HandleMessage();
|
|
}
|