gecko-dev/dom/cache/CacheStreamControlParent.cpp

183 lines
4.6 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/CacheStreamControlParent.h"
#include "mozilla/DebugOnly.h"
#include "mozilla/unused.h"
#include "mozilla/dom/cache/CacheTypes.h"
#include "mozilla/dom/cache/ReadStream.h"
#include "mozilla/dom/cache/StreamList.h"
#include "mozilla/ipc/FileDescriptorSetParent.h"
#include "mozilla/ipc/PBackgroundParent.h"
#include "mozilla/ipc/PFileDescriptorSetParent.h"
#include "nsISupportsImpl.h"
namespace mozilla {
namespace dom {
namespace cache {
using mozilla::ipc::FileDescriptor;
using mozilla::ipc::FileDescriptorSetParent;
using mozilla::ipc::OptionalFileDescriptorSet;
using mozilla::ipc::PFileDescriptorSetParent;
// declared in ActorUtils.h
void
DeallocPCacheStreamControlParent(PCacheStreamControlParent* aActor)
{
delete aActor;
}
CacheStreamControlParent::CacheStreamControlParent()
{
MOZ_COUNT_CTOR(cache::CacheStreamControlParent);
}
CacheStreamControlParent::~CacheStreamControlParent()
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
MOZ_ASSERT(!mStreamList);
MOZ_COUNT_DTOR(cache::CacheStreamControlParent);
}
void
CacheStreamControlParent::SerializeControl(CacheReadStream* aReadStreamOut)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
aReadStreamOut->controlChild() = nullptr;
aReadStreamOut->controlParent() = this;
}
void
CacheStreamControlParent::SerializeFds(CacheReadStream* aReadStreamOut,
const nsTArray<FileDescriptor>& aFds)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
PFileDescriptorSetParent* fdSet = nullptr;
if (!aFds.IsEmpty()) {
fdSet = Manager()->SendPFileDescriptorSetConstructor(aFds[0]);
for (uint32_t i = 1; i < aFds.Length(); ++i) {
Unused << fdSet->SendAddFileDescriptor(aFds[i]);
}
}
if (fdSet) {
aReadStreamOut->fds() = fdSet;
} else {
aReadStreamOut->fds() = void_t();
}
}
void
CacheStreamControlParent::DeserializeFds(const CacheReadStream& aReadStream,
nsTArray<FileDescriptor>& aFdsOut)
{
if (aReadStream.fds().type() !=
OptionalFileDescriptorSet::TPFileDescriptorSetParent) {
return;
}
FileDescriptorSetParent* fdSetActor =
static_cast<FileDescriptorSetParent*>(aReadStream.fds().get_PFileDescriptorSetParent());
MOZ_ASSERT(fdSetActor);
fdSetActor->ForgetFileDescriptors(aFdsOut);
MOZ_ASSERT(!aFdsOut.IsEmpty());
if (!fdSetActor->Send__delete__(fdSetActor)) {
// child process is gone, warn and allow actor to clean up normally
NS_WARNING("Cache failed to delete fd set actor.");
}
}
void
CacheStreamControlParent::NoteClosedAfterForget(const nsID& aId)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
RecvNoteClosed(aId);
}
#ifdef DEBUG
void
CacheStreamControlParent::AssertOwningThread()
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
}
#endif
void
CacheStreamControlParent::ActorDestroy(ActorDestroyReason aReason)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
CloseAllReadStreamsWithoutReporting();
mStreamList->RemoveStreamControl(this);
mStreamList->NoteClosedAll();
mStreamList = nullptr;
}
bool
CacheStreamControlParent::RecvNoteClosed(const nsID& aId)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
MOZ_ASSERT(mStreamList);
mStreamList->NoteClosed(aId);
return true;
}
void
CacheStreamControlParent::SetStreamList(StreamList* aStreamList)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
MOZ_ASSERT(!mStreamList);
mStreamList = aStreamList;
}
void
CacheStreamControlParent::Close(const nsID& aId)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
NotifyClose(aId);
Unused << SendClose(aId);
}
void
CacheStreamControlParent::CloseAll()
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
NotifyCloseAll();
Unused << SendCloseAll();
}
void
CacheStreamControlParent::Shutdown()
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
if (!Send__delete__(this)) {
// child process is gone, allow actor to be destroyed normally
NS_WARNING("Cache failed to delete stream actor.");
return;
}
}
void
CacheStreamControlParent::NotifyClose(const nsID& aId)
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
CloseReadStreams(aId);
}
void
CacheStreamControlParent::NotifyCloseAll()
{
NS_ASSERT_OWNINGTHREAD(CacheStreamControlParent);
CloseAllReadStreams();
}
} // namespace cache
} // namespace dom
} // namespace mozilla