forked from mirrors/gecko-dev
159 lines
4.1 KiB
C++
159 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/cache/CacheStreamControlChild.h"
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#include "mozilla/DebugOnly.h"
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#include "mozilla/unused.h"
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#include "mozilla/dom/cache/ActorUtils.h"
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#include "mozilla/dom/cache/PCacheTypes.h"
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#include "mozilla/dom/cache/ReadStream.h"
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#include "mozilla/ipc/FileDescriptorSetChild.h"
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#include "mozilla/ipc/PBackgroundChild.h"
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#include "mozilla/ipc/PFileDescriptorSetChild.h"
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#include "nsISupportsImpl.h"
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namespace mozilla {
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namespace dom {
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namespace cache {
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using mozilla::ipc::FileDescriptor;
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using mozilla::ipc::FileDescriptorSetChild;
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using mozilla::ipc::OptionalFileDescriptorSet;
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using mozilla::ipc::PFileDescriptorSetChild;
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// declared in ActorUtils.h
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PCacheStreamControlChild*
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AllocPCacheStreamControlChild()
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{
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return new CacheStreamControlChild();
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}
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// declared in ActorUtils.h
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void
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DeallocPCacheStreamControlChild(PCacheStreamControlChild* aActor)
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{
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delete aActor;
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}
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CacheStreamControlChild::CacheStreamControlChild()
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: mDestroyStarted(false)
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{
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MOZ_COUNT_CTOR(cache::CacheStreamControlChild);
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}
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CacheStreamControlChild::~CacheStreamControlChild()
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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MOZ_COUNT_DTOR(cache::CacheStreamControlChild);
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}
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void
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CacheStreamControlChild::StartDestroy()
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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// This can get called twice under some circumstances. For example, if the
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// actor is added to a Feature that has already been notified and the Cache
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// actor has no mListener.
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if (mDestroyStarted) {
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return;
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}
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mDestroyStarted = true;
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// Begin shutting down all streams. This is the same as if the parent had
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// asked us to shutdown. So simulate the CloseAll IPC message.
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RecvCloseAll();
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}
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void
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CacheStreamControlChild::SerializeControl(PCacheReadStream* aReadStreamOut)
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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aReadStreamOut->controlParent() = nullptr;
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aReadStreamOut->controlChild() = this;
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}
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void
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CacheStreamControlChild::SerializeFds(PCacheReadStream* aReadStreamOut,
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const nsTArray<FileDescriptor>& aFds)
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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PFileDescriptorSetChild* fdSet = nullptr;
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if (!aFds.IsEmpty()) {
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fdSet = Manager()->SendPFileDescriptorSetConstructor(aFds[0]);
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for (uint32_t i = 1; i < aFds.Length(); ++i) {
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unused << fdSet->SendAddFileDescriptor(aFds[i]);
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}
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}
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if (fdSet) {
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aReadStreamOut->fds() = fdSet;
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} else {
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aReadStreamOut->fds() = void_t();
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}
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}
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void
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CacheStreamControlChild::DeserializeFds(const PCacheReadStream& aReadStream,
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nsTArray<FileDescriptor>& aFdsOut)
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{
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if (aReadStream.fds().type() !=
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OptionalFileDescriptorSet::TPFileDescriptorSetChild) {
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return;
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}
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auto fdSetActor = static_cast<FileDescriptorSetChild*>(
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aReadStream.fds().get_PFileDescriptorSetChild());
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MOZ_ASSERT(fdSetActor);
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fdSetActor->ForgetFileDescriptors(aFdsOut);
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MOZ_ASSERT(!aFdsOut.IsEmpty());
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unused << fdSetActor->Send__delete__(fdSetActor);
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}
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void
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CacheStreamControlChild::NoteClosedAfterForget(const nsID& aId)
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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unused << SendNoteClosed(aId);
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}
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#ifdef DEBUG
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void
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CacheStreamControlChild::AssertOwningThread()
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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}
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#endif
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void
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CacheStreamControlChild::ActorDestroy(ActorDestroyReason aReason)
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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CloseAllReadStreamsWithoutReporting();
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RemoveFeature();
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}
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bool
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CacheStreamControlChild::RecvClose(const nsID& aId)
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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CloseReadStreams(aId);
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return true;
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}
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bool
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CacheStreamControlChild::RecvCloseAll()
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{
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NS_ASSERT_OWNINGTHREAD(CacheStreamControlChild);
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CloseAllReadStreams();
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return true;
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}
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} // namespace cache
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} // namespace dom
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} // namespace mozilla
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