gecko-dev/gfx/layers/ipc/AsyncTransactionTracker.cpp

130 lines
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* 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 "AsyncTransactionTracker.h"
#include "mozilla/layers/ImageBridgeChild.h" // for ImageBridgeChild
namespace mozilla {
namespace layers {
uint64_t AsyncTransactionTracker::sSerialCounter(0);
Mutex* AsyncTransactionTracker::sLock = nullptr;
AsyncTransactionTracker::AsyncTransactionTracker()
: mSerial(GetNextSerial())
, mCompletedMonitor("AsyncTransactionTracker.mCompleted")
, mCompleted(false)
{
}
AsyncTransactionTracker::~AsyncTransactionTracker()
{
}
void
AsyncTransactionTracker::WaitComplete()
{
MOZ_ASSERT(!InImageBridgeChildThread());
MonitorAutoLock mon(mCompletedMonitor);
int count = 0;
while (!mCompleted) {
if (!NS_SUCCEEDED(mCompletedMonitor.Wait(PR_MillisecondsToInterval(10000)))) {
NS_WARNING("Failed to wait Monitor");
return;
}
if (count > 1) {
NS_WARNING("Waiting async transaction complete.");
}
count++;
}
}
void
AsyncTransactionTracker::NotifyComplete()
{
MonitorAutoLock mon(mCompletedMonitor);
MOZ_ASSERT(!mCompleted);
mCompleted = true;
Complete();
mCompletedMonitor.Notify();
}
void
AsyncTransactionTracker::NotifyCancel()
{
MonitorAutoLock mon(mCompletedMonitor);
MOZ_ASSERT(!mCompleted);
mCompleted = true;
Cancel();
mCompletedMonitor.Notify();
}
AsyncTransactionTrackersHolder::AsyncTransactionTrackersHolder()
: mIsTrackersHolderDestroyed(false)
{
MOZ_COUNT_CTOR(AsyncTransactionTrackersHolder);
}
AsyncTransactionTrackersHolder::~AsyncTransactionTrackersHolder()
{
if (!mIsTrackersHolderDestroyed) {
DestroyAsyncTransactionTrackersHolder();
}
MOZ_COUNT_DTOR(AsyncTransactionTrackersHolder);
}
void
AsyncTransactionTrackersHolder::HoldUntilComplete(AsyncTransactionTracker* aTransactionTracker)
{
if (!aTransactionTracker) {
return;
}
if (mIsTrackersHolderDestroyed && aTransactionTracker) {
aTransactionTracker->NotifyComplete();
return;
}
if (aTransactionTracker) {
mAsyncTransactionTrackeres[aTransactionTracker->GetId()] = aTransactionTracker;
}
}
void
AsyncTransactionTrackersHolder::TransactionCompleteted(uint64_t aTransactionId)
{
std::map<uint64_t, RefPtr<AsyncTransactionTracker> >::iterator it
= mAsyncTransactionTrackeres.find(aTransactionId);
if (it != mAsyncTransactionTrackeres.end()) {
it->second->NotifyCancel();
mAsyncTransactionTrackeres.erase(it);
}
}
void
AsyncTransactionTrackersHolder::ClearAllAsyncTransactionTrackers()
{
std::map<uint64_t, RefPtr<AsyncTransactionTracker> >::iterator it;
for (it = mAsyncTransactionTrackeres.begin();
it != mAsyncTransactionTrackeres.end(); it++) {
it->second->NotifyCancel();
}
mAsyncTransactionTrackeres.clear();
}
void
AsyncTransactionTrackersHolder::DestroyAsyncTransactionTrackersHolder() {
mIsTrackersHolderDestroyed = true;
ClearAllAsyncTransactionTrackers();
}
} // namespace layers
} // namespace mozilla