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/* -*- 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 "BoundStorageKeyChild.h"
#include "mozilla/Unused.h"
#include "mozilla/dom/cache/CacheChild.h"
#include "mozilla/dom/cache/CacheOpChild.h"
#include "mozilla/dom/cache/CacheStorage.h"
#include "mozilla/dom/cache/CacheWorkerRef.h"
#include "mozilla/dom/cache/PCacheStorageChild.h"
namespace mozilla::dom::cache {
BoundStorageKeyChild::BoundStorageKeyChild(
BoundStorageKeyChildListener* aListener)
: mListener(aListener), mDelayedDestroy(false) {
MOZ_COUNT_CTOR(BoundStorageKeyChild);
MOZ_DIAGNOSTIC_ASSERT(mListener);
}
BoundStorageKeyChild::~BoundStorageKeyChild() {
MOZ_COUNT_DTOR(BoundStorageKeyChild);
NS_ASSERT_OWNINGTHREAD(BoundStorageKeyChild);
MOZ_DIAGNOSTIC_ASSERT(!mListener);
}
void BoundStorageKeyChild::ClearListener() {
NS_ASSERT_OWNINGTHREAD(BoundStorageKeyChild);
MOZ_DIAGNOSTIC_ASSERT(mListener);
mListener = nullptr;
}
void BoundStorageKeyChild::StartDestroyFromListener() {
NS_ASSERT_OWNINGTHREAD(BoundStorageKeyChild);
StartDestroy();
}
void BoundStorageKeyChild::DestroyInternal() {
BoundStorageKeyChildListener* listener = mListener;
// Theoretically we can get double called if the right race happens. Handle
// that by just ignoring the second StartDestroy() call.
if (!listener) {
return;
}
listener->OnActorDestroy(this);
// listener should call ClearListener() in OnActorDestroy()
MOZ_DIAGNOSTIC_ASSERT(!mListener);
}
void BoundStorageKeyChild::StartDestroy() {
// StartDestroy() can get called from either child actor or the
// CacheWorkerRef.
NS_ASSERT_OWNINGTHREAD(BoundStorageKeyChild);
if (NumChildActors() != 0) {
mDelayedDestroy = true;
return;
}
DestroyInternal();
}
void BoundStorageKeyChild::NoteDeletedActor() {
// Check to see if DestroyInternal was delayed because of active CacheOpChilds
// when StartDestroy was called from WorkerRef notification. If the last
// CacheOpChild is getting destructed; it's the time for us to SendTearDown to
// the other side.
if (mDelayedDestroy && NumChildActors() == 0) {
DestroyInternal();
}
}
void BoundStorageKeyChild::ActorDestroy(ActorDestroyReason aReason) {
NS_ASSERT_OWNINGTHREAD(BoundStorageKeyChild);
BoundStorageKeyChildListener* listener = mListener;
if (listener) {
listener->OnActorDestroy(this);
// listener should call ClearListener() in OnActorDestroy()
MOZ_DIAGNOSTIC_ASSERT(!mListener);
}
}
} // namespace mozilla::dom::cache
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