Sylvestre Ledru
9eb1a31a98
replaced by .editorconfig # ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D287843
107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
/* 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/CacheStorageChild.h"
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#include "mozilla/dom/cache/CacheChild.h"
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#include "mozilla/dom/cache/CacheOpChild.h"
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#include "mozilla/dom/cache/CacheStorage.h"
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#include "mozilla/dom/cache/CacheWorkerRef.h"
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namespace mozilla::dom::cache {
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// declared in ActorUtils.h
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void DeallocPCacheStorageChild(PCacheStorageChild* aActor) { delete aActor; }
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CacheStorageChild::CacheStorageChild(CacheStorageChildListener* aListener,
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SafeRefPtr<CacheWorkerRef> aWorkerRef,
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ActorChild* aParentActor)
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: mParentActor(aParentActor), mListener(aListener), mDelayedDestroy(false) {
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MOZ_COUNT_CTOR(cache::CacheStorageChild);
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MOZ_DIAGNOSTIC_ASSERT(mListener);
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SetWorkerRef(std::move(aWorkerRef));
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}
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CacheStorageChild::~CacheStorageChild() {
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MOZ_COUNT_DTOR(cache::CacheStorageChild);
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NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
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MOZ_DIAGNOSTIC_ASSERT(!mListener);
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}
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void CacheStorageChild::ClearListener() {
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NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
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MOZ_DIAGNOSTIC_ASSERT(mListener);
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mListener = nullptr;
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}
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void CacheStorageChild::StartDestroyFromListener() {
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NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
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StartDestroy();
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}
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void CacheStorageChild::DestroyInternal() {
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CacheStorageChildListener* listener = mListener;
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// StartDestroy() can get called from either CacheStorage or the
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// CacheWorkerRef.
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// Theoretically we can get double called if the right race happens. Handle
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// that by just ignoring the second StartDestroy() call.
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if (!listener) {
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return;
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}
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listener->OnActorDestroy(this);
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// CacheStorage listener should call ClearListener() in OnActorDestroy()
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MOZ_DIAGNOSTIC_ASSERT(!mListener);
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// Start actor destruction from parent process
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QM_WARNONLY_TRY(OkIf(SendTeardown()));
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}
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void CacheStorageChild::StartDestroy() {
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NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
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if (NumChildActors() != 0) {
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mDelayedDestroy = true;
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return;
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}
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DestroyInternal();
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}
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void CacheStorageChild::NoteDeletedActor() {
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// Check to see if DestroyInternal was delayed because of active CacheOpChilds
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// when StartDestroy was called from WorkerRef notification. If the last
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// CacheOpChild is getting destructed; it's the time for us to SendTearDown to
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// the other side.
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if (NumChildActors() == 0 && mDelayedDestroy) {
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DestroyInternal();
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}
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}
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void CacheStorageChild::ActorDestroy(ActorDestroyReason aReason) {
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NS_ASSERT_OWNINGTHREAD(CacheStorageChild);
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CacheStorageChildListener* listener = mListener;
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if (listener) {
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listener->OnActorDestroy(this);
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// CacheStorage listener should call ClearListener() in OnActorDestroy()
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MOZ_DIAGNOSTIC_ASSERT(!mListener);
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}
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if (mParentActor) {
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mParentActor->NoteDeletedActor();
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}
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RemoveWorkerRef();
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}
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PCacheOpChild* CacheStorageChild::AllocPCacheOpChild(
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const CacheOpArgs& aOpArgs) {
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MOZ_CRASH("CacheOpChild should be manually constructed.");
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return nullptr;
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}
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} // namespace mozilla::dom::cache
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