gecko-dev/dom/cache/CacheOpChild.cpp

278 строки
7.4 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/CacheOpChild.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/Request.h"
#include "mozilla/dom/Response.h"
#include "mozilla/dom/cache/Cache.h"
#include "mozilla/dom/cache/CacheChild.h"
#include "mozilla/dom/cache/CacheStreamControlChild.h"
namespace mozilla {
namespace dom {
namespace cache {
using mozilla::ipc::PBackgroundChild;
namespace {
void
AddWorkerHolderToStreamChild(const CacheReadStream& aReadStream,
CacheWorkerHolder* aWorkerHolder)
{
MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
CacheStreamControlChild* cacheControl =
static_cast<CacheStreamControlChild*>(aReadStream.controlChild());
if (cacheControl) {
cacheControl->SetWorkerHolder(aWorkerHolder);
}
}
void
AddWorkerHolderToStreamChild(const CacheResponse& aResponse,
CacheWorkerHolder* aWorkerHolder)
{
MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
if (aResponse.body().type() == CacheReadStreamOrVoid::Tvoid_t) {
return;
}
AddWorkerHolderToStreamChild(aResponse.body().get_CacheReadStream(),
aWorkerHolder);
}
void
AddWorkerHolderToStreamChild(const CacheRequest& aRequest,
CacheWorkerHolder* aWorkerHolder)
{
MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
if (aRequest.body().type() == CacheReadStreamOrVoid::Tvoid_t) {
return;
}
AddWorkerHolderToStreamChild(aRequest.body().get_CacheReadStream(),
aWorkerHolder);
}
} // namespace
CacheOpChild::CacheOpChild(CacheWorkerHolder* aWorkerHolder,
nsIGlobalObject* aGlobal,
nsISupports* aParent, Promise* aPromise)
: mGlobal(aGlobal)
, mParent(aParent)
, mPromise(aPromise)
{
MOZ_DIAGNOSTIC_ASSERT(mGlobal);
MOZ_DIAGNOSTIC_ASSERT(mParent);
MOZ_DIAGNOSTIC_ASSERT(mPromise);
MOZ_ASSERT_IF(!NS_IsMainThread(), aWorkerHolder);
RefPtr<CacheWorkerHolder> workerHolder =
CacheWorkerHolder::PreferBehavior(aWorkerHolder,
CacheWorkerHolder::PreventIdleShutdownStart);
SetWorkerHolder(workerHolder);
}
CacheOpChild::~CacheOpChild()
{
NS_ASSERT_OWNINGTHREAD(CacheOpChild);
MOZ_DIAGNOSTIC_ASSERT(!mPromise);
}
void
CacheOpChild::ActorDestroy(ActorDestroyReason aReason)
{
NS_ASSERT_OWNINGTHREAD(CacheOpChild);
// If the actor was terminated for some unknown reason, then indicate the
// operation is dead.
if (mPromise) {
mPromise->MaybeReject(NS_ERROR_FAILURE);
mPromise = nullptr;
}
RemoveWorkerHolder();
}
mozilla::ipc::IPCResult
CacheOpChild::Recv__delete__(const ErrorResult& aRv,
const CacheOpResult& aResult)
{
NS_ASSERT_OWNINGTHREAD(CacheOpChild);
if (NS_WARN_IF(aRv.Failed())) {
MOZ_DIAGNOSTIC_ASSERT(aResult.type() == CacheOpResult::Tvoid_t);
// TODO: Remove this const_cast (bug 1152078).
// It is safe for now since this ErrorResult is handed off to us by IPDL
// and is thrown into the trash afterwards.
mPromise->MaybeReject(const_cast<ErrorResult&>(aRv));
mPromise = nullptr;
return IPC_OK();
}
switch (aResult.type()) {
case CacheOpResult::TCacheMatchResult:
{
HandleResponse(aResult.get_CacheMatchResult().responseOrVoid());
break;
}
case CacheOpResult::TCacheMatchAllResult:
{
HandleResponseList(aResult.get_CacheMatchAllResult().responseList());
break;
}
case CacheOpResult::TCachePutAllResult:
{
mPromise->MaybeResolveWithUndefined();
break;
}
case CacheOpResult::TCacheDeleteResult:
{
mPromise->MaybeResolve(aResult.get_CacheDeleteResult().success());
break;
}
case CacheOpResult::TCacheKeysResult:
{
HandleRequestList(aResult.get_CacheKeysResult().requestList());
break;
}
case CacheOpResult::TStorageMatchResult:
{
HandleResponse(aResult.get_StorageMatchResult().responseOrVoid());
break;
}
case CacheOpResult::TStorageHasResult:
{
mPromise->MaybeResolve(aResult.get_StorageHasResult().success());
break;
}
case CacheOpResult::TStorageOpenResult:
{
auto actor = static_cast<CacheChild*>(
aResult.get_StorageOpenResult().actorChild());
// If we have a success status then we should have an actor. Gracefully
// reject instead of crashing, though, if we get a nullptr here.
MOZ_DIAGNOSTIC_ASSERT(actor);
if (!actor) {
ErrorResult status;
status.ThrowTypeError<MSG_CACHE_OPEN_FAILED>();
mPromise->MaybeReject(status);
break;
}
RefPtr<CacheWorkerHolder> workerHolder =
CacheWorkerHolder::PreferBehavior(GetWorkerHolder(),
CacheWorkerHolder::AllowIdleShutdownStart);
actor->SetWorkerHolder(workerHolder);
RefPtr<Cache> cache = new Cache(mGlobal, actor);
mPromise->MaybeResolve(cache);
break;
}
case CacheOpResult::TStorageDeleteResult:
{
mPromise->MaybeResolve(aResult.get_StorageDeleteResult().success());
break;
}
case CacheOpResult::TStorageKeysResult:
{
mPromise->MaybeResolve(aResult.get_StorageKeysResult().keyList());
break;
}
default:
MOZ_CRASH("Unknown Cache op result type!");
}
mPromise = nullptr;
return IPC_OK();
}
void
CacheOpChild::StartDestroy()
{
NS_ASSERT_OWNINGTHREAD(CacheOpChild);
// Do not cancel on-going operations when WorkerHolder calls this. Instead,
// keep the Worker alive until we are done.
}
nsIGlobalObject*
CacheOpChild::GetGlobalObject() const
{
return mGlobal;
}
#ifdef DEBUG
void
CacheOpChild::AssertOwningThread() const
{
NS_ASSERT_OWNINGTHREAD(CacheOpChild);
}
#endif
PBackgroundChild*
CacheOpChild::GetIPCManager()
{
MOZ_CRASH("CacheOpChild does not implement TypeUtils::GetIPCManager()");
}
void
CacheOpChild::HandleResponse(const CacheResponseOrVoid& aResponseOrVoid)
{
if (aResponseOrVoid.type() == CacheResponseOrVoid::Tvoid_t) {
mPromise->MaybeResolveWithUndefined();
return;
}
const CacheResponse& cacheResponse = aResponseOrVoid.get_CacheResponse();
AddWorkerHolderToStreamChild(cacheResponse, GetWorkerHolder());
RefPtr<Response> response = ToResponse(cacheResponse);
mPromise->MaybeResolve(response);
}
void
CacheOpChild::HandleResponseList(const nsTArray<CacheResponse>& aResponseList)
{
AutoTArray<RefPtr<Response>, 256> responses;
responses.SetCapacity(aResponseList.Length());
for (uint32_t i = 0; i < aResponseList.Length(); ++i) {
AddWorkerHolderToStreamChild(aResponseList[i], GetWorkerHolder());
responses.AppendElement(ToResponse(aResponseList[i]));
}
mPromise->MaybeResolve(responses);
}
void
CacheOpChild::HandleRequestList(const nsTArray<CacheRequest>& aRequestList)
{
AutoTArray<RefPtr<Request>, 256> requests;
requests.SetCapacity(aRequestList.Length());
for (uint32_t i = 0; i < aRequestList.Length(); ++i) {
AddWorkerHolderToStreamChild(aRequestList[i], GetWorkerHolder());
requests.AppendElement(ToRequest(aRequestList[i]));
}
mPromise->MaybeResolve(requests);
}
} // namespace cache
} // namespace dom
} // namespace mozilla