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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 "ServiceWorkerProxy.h"
#include "ServiceWorkerCloneData.h"
#include "ServiceWorkerManager.h"
#include "ServiceWorkerParent.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/dom/ClientState.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "ServiceWorkerInfo.h"
namespace mozilla::dom {
using mozilla::ipc::AssertIsOnBackgroundThread;
ServiceWorkerProxy::~ServiceWorkerProxy() {
// Any thread
MOZ_DIAGNOSTIC_ASSERT(!mActor);
MOZ_DIAGNOSTIC_ASSERT(!mInfo);
}
void ServiceWorkerProxy::MaybeShutdownOnBGThread() {
AssertIsOnBackgroundThread();
if (!mActor) {
return;
}
mActor->MaybeSendDelete();
}
void ServiceWorkerProxy::InitOnMainThread() {
AssertIsOnMainThread();
auto scopeExit = MakeScopeExit([&] { MaybeShutdownOnMainThread(); });
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
NS_ENSURE_TRUE_VOID(swm);
RefPtr<ServiceWorkerRegistrationInfo> reg =
swm->GetRegistration(mDescriptor.PrincipalInfo(), mDescriptor.Scope());
NS_ENSURE_TRUE_VOID(reg);
RefPtr<ServiceWorkerInfo> info = reg->GetByDescriptor(mDescriptor);
NS_ENSURE_TRUE_VOID(info);
scopeExit.release();
mInfo = new nsMainThreadPtrHolder<ServiceWorkerInfo>(
"ServiceWorkerProxy::mInfo", info);
}
void ServiceWorkerProxy::MaybeShutdownOnMainThread() {
AssertIsOnMainThread();
nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
__func__, this, &ServiceWorkerProxy::MaybeShutdownOnBGThread);
MOZ_ALWAYS_SUCCEEDS(mEventTarget->Dispatch(r.forget(), NS_DISPATCH_NORMAL));
}
void ServiceWorkerProxy::StopListeningOnMainThread() {
AssertIsOnMainThread();
mInfo = nullptr;
}
ServiceWorkerProxy::ServiceWorkerProxy(
const ServiceWorkerDescriptor& aDescriptor)
: mEventTarget(GetCurrentSerialEventTarget()), mDescriptor(aDescriptor) {}
void ServiceWorkerProxy::Init(ServiceWorkerParent* aActor) {
AssertIsOnBackgroundThread();
MOZ_DIAGNOSTIC_ASSERT(aActor);
MOZ_DIAGNOSTIC_ASSERT(!mActor);
MOZ_DIAGNOSTIC_ASSERT(mEventTarget);
mActor = aActor;
// Note, this must be done from a separate Init() method and not in
// the constructor. If done from the constructor the runnable can
// execute, complete, and release its reference before the constructor
// returns.
nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
"ServiceWorkerProxy::Init", this, &ServiceWorkerProxy::InitOnMainThread);
MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));
}
void ServiceWorkerProxy::RevokeActor(ServiceWorkerParent* aActor) {
AssertIsOnBackgroundThread();
MOZ_DIAGNOSTIC_ASSERT(mActor);
MOZ_DIAGNOSTIC_ASSERT(mActor == aActor);
mActor = nullptr;
nsCOMPtr<nsIRunnable> r = NewRunnableMethod(
__func__, this, &ServiceWorkerProxy::StopListeningOnMainThread);
MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));
}
void ServiceWorkerProxy::PostMessage(RefPtr<ServiceWorkerCloneData>&& aData,
const ClientInfo& aClientInfo,
const ClientState& aClientState) {
AssertIsOnBackgroundThread();
RefPtr<ServiceWorkerProxy> self = this;
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
__func__,
[self, data = std::move(aData), aClientInfo, aClientState]() mutable {
if (!self->mInfo) {
return;
}
self->mInfo->PostMessage(std::move(data), aClientInfo, aClientState);
});
MOZ_ALWAYS_SUCCEEDS(SchedulerGroup::Dispatch(r.forget()));
}
} // namespace mozilla::dom
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