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/* -*- Mode: C++; tab-width: 2; 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 "SocketProcessBackgroundChild.h"
#include "SocketProcessLogging.h"
#include "mozilla/ipc/Endpoint.h"
#include "nsThreadUtils.h"
namespace mozilla::net {
StaticMutex SocketProcessBackgroundChild::sMutex;
StaticRefPtr<SocketProcessBackgroundChild>
SocketProcessBackgroundChild::sInstance;
StaticRefPtr<nsISerialEventTarget> SocketProcessBackgroundChild::sTaskQueue;
// static
RefPtr<SocketProcessBackgroundChild>
SocketProcessBackgroundChild::GetSingleton() {
StaticMutexAutoLock lock(sMutex);
return sInstance;
}
// static
void SocketProcessBackgroundChild::Create(
ipc::Endpoint<PSocketProcessBackgroundChild>&& aEndpoint) {
if (NS_WARN_IF(!aEndpoint.IsValid())) {
MOZ_ASSERT_UNREACHABLE(
"Can't create SocketProcessBackgroundChild with invalid endpoint");
return;
}
nsCOMPtr<nsISerialEventTarget> transportQueue;
if (NS_WARN_IF(NS_FAILED(NS_CreateBackgroundTaskQueue(
"SocketBackgroundChildQueue", getter_AddRefs(transportQueue))))) {
return;
}
RefPtr<SocketProcessBackgroundChild> actor =
new SocketProcessBackgroundChild();
transportQueue->Dispatch(NS_NewRunnableFunction(
"BindSocketBackgroundChild",
[endpoint = std::move(aEndpoint), actor]() mutable {
// We checked endpoint validity before the dispatch, so this cannot
// fail.
MOZ_ALWAYS_TRUE(endpoint.Bind(actor));
}));
// Immediately store the actor and queue into the global.
// Any messages dispatched to the queue will arrive after it has been bound.
LOG(("SocketProcessBackgroundChild::Create"));
StaticMutexAutoLock lock(sMutex);
MOZ_ASSERT(!sInstance && !sTaskQueue,
"Cannot initialize SocketProcessBackgroundChild twice!");
sInstance = actor;
sTaskQueue = transportQueue;
}
// static
void SocketProcessBackgroundChild::Shutdown() {
nsCOMPtr<nsISerialEventTarget> taskQueue = TaskQueue();
if (!taskQueue) {
return;
}
taskQueue->Dispatch(
NS_NewRunnableFunction("SocketProcessBackgroundChild::Shutdown", []() {
LOG(("SocketProcessBackgroundChild::Shutdown"));
StaticMutexAutoLock lock(sMutex);
sInstance->Close();
sInstance = nullptr;
sTaskQueue = nullptr;
}));
}
// static
already_AddRefed<nsISerialEventTarget>
SocketProcessBackgroundChild::TaskQueue() {
StaticMutexAutoLock lock(sMutex);
return do_AddRef(sTaskQueue);
}
// static
nsresult SocketProcessBackgroundChild::WithActor(
const char* aName,
MoveOnlyFunction<void(SocketProcessBackgroundChild*)> aCallback) {
nsCOMPtr<nsISerialEventTarget> taskQueue = TaskQueue();
if (!taskQueue) {
return NS_ERROR_NOT_AVAILABLE;
}
return taskQueue->Dispatch(NS_NewRunnableFunction(
aName, [callback = std::move(aCallback)]() mutable {
RefPtr<SocketProcessBackgroundChild> actor =
SocketProcessBackgroundChild::GetSingleton();
if (actor) {
callback(actor);
}
}));
}
SocketProcessBackgroundChild::SocketProcessBackgroundChild() {
LOG(("SocketProcessBackgroundChild ctor"));
}
SocketProcessBackgroundChild::~SocketProcessBackgroundChild() {
LOG(("SocketProcessBackgroundChild dtor"));
}
} // namespace mozilla::net
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