gecko-dev/dom/cache/StreamControl.cpp

97 строки
2.8 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 "mozilla/dom/cache/StreamControl.h"
namespace mozilla {
namespace dom {
namespace cache {
void StreamControl::AddReadStream(ReadStream::Controllable* aReadStream) {
AssertOwningThread();
MOZ_DIAGNOSTIC_ASSERT(aReadStream);
MOZ_ASSERT(!mReadStreamList.Contains(aReadStream));
mReadStreamList.AppendElement(aReadStream);
}
void StreamControl::ForgetReadStream(ReadStream::Controllable* aReadStream) {
AssertOwningThread();
MOZ_ALWAYS_TRUE(mReadStreamList.RemoveElement(aReadStream));
}
void StreamControl::NoteClosed(ReadStream::Controllable* aReadStream,
const nsID& aId) {
AssertOwningThread();
ForgetReadStream(aReadStream);
NoteClosedAfterForget(aId);
}
StreamControl::~StreamControl() {
// owning thread only, but can't call virtual AssertOwningThread in destructor
MOZ_DIAGNOSTIC_ASSERT(mReadStreamList.IsEmpty());
}
void StreamControl::CloseReadStreams(const nsID& aId) {
AssertOwningThread();
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
uint32_t closedCount = 0;
#endif
ReadStreamList::ForwardIterator iter(mReadStreamList);
while (iter.HasMore()) {
RefPtr<ReadStream::Controllable> stream = iter.GetNext();
if (stream->MatchId(aId)) {
stream->CloseStream();
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
closedCount += 1;
#endif
}
}
MOZ_DIAGNOSTIC_ASSERT(closedCount > 0);
}
void StreamControl::CloseAllReadStreams() {
AssertOwningThread();
// A copy of mReadStreamList is necessary here for two reasons:
// 1. mReadStreamList is modified in StreamControl::ForgetReadStream (called
// transitively)
// 2. the this pointer is deleted by CacheStreamControlParent::Shutdown
// (called transitively)
auto readStreamList = mReadStreamList.Clone();
ReadStreamList::ForwardIterator iter(readStreamList);
while (iter.HasMore()) {
iter.GetNext()->CloseStream();
}
}
void StreamControl::CloseAllReadStreamsWithoutReporting() {
AssertOwningThread();
ReadStreamList::ForwardIterator iter(mReadStreamList);
while (iter.HasMore()) {
RefPtr<ReadStream::Controllable> stream = iter.GetNext();
// Note, we cannot trigger IPC traffic here. So use
// CloseStreamWithoutReporting().
stream->CloseStreamWithoutReporting();
}
}
bool StreamControl::HasEverBeenRead() const {
ReadStreamList::ForwardIterator iter(mReadStreamList);
while (iter.HasMore()) {
if (iter.GetNext()->HasEverBeenRead()) {
return true;
}
}
return false;
}
} // namespace cache
} // namespace dom
} // namespace mozilla