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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/CacheWorkerHolder.h"
#include "mozilla/dom/cache/ActorChild.h"
#include "WorkerPrivate.h"
namespace mozilla {
namespace dom {
namespace cache {
using mozilla::dom::workers::Terminating;
using mozilla::dom::workers::Status;
using mozilla::dom::workers::WorkerPrivate;
// static
already_AddRefed<CacheWorkerHolder>
CacheWorkerHolder::Create(WorkerPrivate* aWorkerPrivate, Behavior aBehavior)
{
MOZ_DIAGNOSTIC_ASSERT(aWorkerPrivate);
RefPtr<CacheWorkerHolder> workerHolder = new CacheWorkerHolder(aBehavior);
if (NS_WARN_IF(!workerHolder->HoldWorker(aWorkerPrivate, Terminating))) {
return nullptr;
}
return workerHolder.forget();
}
// static
already_AddRefed<CacheWorkerHolder>
CacheWorkerHolder::PreferBehavior(CacheWorkerHolder* aCurrentHolder,
Behavior aBehavior)
{
if (!aCurrentHolder) {
return nullptr;
}
RefPtr<CacheWorkerHolder> orig = aCurrentHolder;
if (orig->GetBehavior() == aBehavior) {
return orig.forget();
}
RefPtr<CacheWorkerHolder> replace = Create(orig->mWorkerPrivate, aBehavior);
if (!replace) {
return orig.forget();
}
return replace.forget();
}
void
CacheWorkerHolder::AddActor(ActorChild* aActor)
{
NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
MOZ_DIAGNOSTIC_ASSERT(aActor);
MOZ_ASSERT(!mActorList.Contains(aActor));
mActorList.AppendElement(aActor);
// Allow an actor to be added after we've entered the Notifying case. We
// can't stop the actor creation from racing with out destruction of the
// other actors and we need to wait for this extra one to close as well.
// Signal it should destroy itself right away.
if (mNotified) {
aActor->StartDestroy();
}
}
void
CacheWorkerHolder::RemoveActor(ActorChild* aActor)
{
NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
MOZ_DIAGNOSTIC_ASSERT(aActor);
mActorList.RemoveElement(aActor);
MOZ_ASSERT(!mActorList.Contains(aActor));
}
bool
CacheWorkerHolder::Notified() const
{
return mNotified;
}
bool
CacheWorkerHolder::Notify(Status aStatus)
{
NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
// When the service worker thread is stopped we will get Terminating,
// but nothing higher than that. We must shut things down at Terminating.
if (aStatus < Terminating || mNotified) {
return true;
}
mNotified = true;
// Start the asynchronous destruction of our actors. These will call back
// into RemoveActor() once the actor is destroyed.
for (uint32_t i = 0; i < mActorList.Length(); ++i) {
MOZ_DIAGNOSTIC_ASSERT(mActorList[i]);
mActorList[i]->StartDestroy();
}
return true;
}
CacheWorkerHolder::CacheWorkerHolder(Behavior aBehavior)
: WorkerHolder(aBehavior)
, mNotified(false)
{
}
CacheWorkerHolder::~CacheWorkerHolder()
{
NS_ASSERT_OWNINGTHREAD(CacheWorkerHolder);
MOZ_DIAGNOSTIC_ASSERT(mActorList.IsEmpty());
}
} // namespace cache
} // namespace dom
} // namespace mozilla
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