gecko-dev/dom/cache/CacheStorageChild.cpp

177 lines
4.7 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/CacheStorageChild.h"
#include "mozilla/unused.h"
#include "mozilla/dom/cache/CacheChild.h"
#include "mozilla/dom/cache/CacheStorage.h"
#include "mozilla/dom/cache/StreamUtils.h"
namespace mozilla {
namespace dom {
namespace cache {
// declared in ActorUtils.h
void
DeallocPCacheStorageChild(PCacheStorageChild* aActor)
{
delete aActor;
}
CacheStorageChild::CacheStorageChild(CacheStorage* aListener, Feature* aFeature)
: mListener(aListener)
{
MOZ_COUNT_CTOR(cache::CacheStorageChild);
MOZ_ASSERT(mListener);
SetFeature(aFeature);
}
CacheStorageChild::~CacheStorageChild()
{
MOZ_COUNT_DTOR(cache::CacheStorageChild);
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
MOZ_ASSERT(!mListener);
}
void
CacheStorageChild::ClearListener()
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
MOZ_ASSERT(mListener);
mListener = nullptr;
}
void
CacheStorageChild::StartDestroy()
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
// StartDestroy() can get called from either CacheStorage or the Feature.
// Theoretically we can get double called if the right race happens. Handle
// that by just ignoring the second StartDestroy() call.
if (!listener) {
return;
}
listener->DestroyInternal(this);
// CacheStorage listener should call ClearListener() in DestroyInternal()
MOZ_ASSERT(!mListener);
// Start actor destruction from parent process
unused << SendTeardown();
}
void
CacheStorageChild::ActorDestroy(ActorDestroyReason aReason)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
if (listener) {
listener->DestroyInternal(this);
// CacheStorage listener should call ClearListener() in DestroyInternal()
MOZ_ASSERT(!mListener);
}
RemoveFeature();
}
bool
CacheStorageChild::RecvMatchResponse(const RequestId& aRequestId,
const nsresult& aRv,
const PCacheResponseOrVoid& aResponseOrVoid)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
AddFeatureToStreamChild(aResponseOrVoid, GetFeature());
nsRefPtr<CacheStorage> listener = mListener;
if (!listener) {
StartDestroyStreamChild(aResponseOrVoid);
return true;
}
listener->RecvMatchResponse(aRequestId, aRv, aResponseOrVoid);
return true;
}
bool
CacheStorageChild::RecvHasResponse(const RequestId& aRequestId,
const nsresult& aRv,
const bool& aSuccess)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
if (listener) {
listener->RecvHasResponse(aRequestId, aRv, aSuccess);
}
return true;
}
bool
CacheStorageChild::RecvOpenResponse(const RequestId& aRequestId,
const nsresult& aRv,
PCacheChild* aActor)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
if (!listener || FeatureNotified()) {
if (aActor) {
unused << aActor->SendTeardown();
}
return true;
}
CacheChild* cacheChild = static_cast<CacheChild*>(aActor);
// Since FeatureNotified() returned false above, we are guaranteed that
// the feature won't try to shutdown the actor until after we create the
// Cache DOM object in the listener's RecvOpenResponse() method. This
// is important because StartShutdown() expects a Cache object listener.
if (cacheChild) {
cacheChild->SetFeature(GetFeature());
}
listener->RecvOpenResponse(aRequestId, aRv, cacheChild);
return true;
}
bool
CacheStorageChild::RecvDeleteResponse(const RequestId& aRequestId,
const nsresult& aRv,
const bool& aResult)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
if (listener) {
listener->RecvDeleteResponse(aRequestId, aRv, aResult);
}
return true;
}
bool
CacheStorageChild::RecvKeysResponse(const RequestId& aRequestId,
const nsresult& aRv,
nsTArray<nsString>&& aKeys)
{
NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
nsRefPtr<CacheStorage> listener = mListener;
if (listener) {
listener->RecvKeysResponse(aRequestId, aRv, aKeys);
}
return true;
}
} // namespace cache
} // namespace dom
} // namespace mozilla