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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 "ServiceWorkerShutdownState.h"
#include <array>
#include <type_traits>
#include "MainThreadUtils.h"
#include "ServiceWorkerUtils.h"
#include "mozilla/Assertions.h"
#include "mozilla/SchedulerGroup.h"
#include "mozilla/Unused.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/RemoteWorkerService.h"
#include "mozilla/dom/ServiceWorkerManager.h"
#include "mozilla/dom/WorkerCommon.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "nsDebug.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"
namespace mozilla::dom {
using Progress = ServiceWorkerShutdownState::Progress;
namespace {
constexpr inline auto UnderlyingProgressValue(Progress aProgress) {
return std::underlying_type_t<Progress>(aProgress);
}
constexpr std::array<const char*, UnderlyingProgressValue(Progress::EndGuard_)>
gProgressStrings = {{
// clang-format off
"parent process main thread",
"parent process IPDL background thread",
"content process worker launcher thread",
"content process main thread",
"shutdown completed"
// clang-format on
}};
} // anonymous namespace
ServiceWorkerShutdownState::ServiceWorkerShutdownState()
: mProgress(Progress::ParentProcessMainThread) {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
}
ServiceWorkerShutdownState::~ServiceWorkerShutdownState() {
Unused << NS_WARN_IF(mProgress != Progress::ShutdownCompleted);
}
const char* ServiceWorkerShutdownState::GetProgressString() const {
return gProgressStrings[UnderlyingProgressValue(mProgress)];
}
void ServiceWorkerShutdownState::SetProgress(Progress aProgress) {
MOZ_ASSERT(aProgress != Progress::EndGuard_);
// The Shutdown progress should be increased step by step. However, it could
// directly get into ShutdownCompleted state when shutting down starts during
// ServiceWorker spawning.
MOZ_RELEASE_ASSERT(UnderlyingProgressValue(mProgress) + 1 ==
UnderlyingProgressValue(aProgress) ||
aProgress == Progress::ShutdownCompleted);
mProgress = aProgress;
}
namespace {
void ReportProgressToServiceWorkerManager(uint32_t aShutdownStateId,
Progress aProgress) {
MOZ_ASSERT(XRE_IsParentProcess());
MOZ_ASSERT(NS_IsMainThread());
RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
MOZ_RELEASE_ASSERT(swm, "ServiceWorkers should shutdown before SWM.");
swm->ReportServiceWorkerShutdownProgress(aShutdownStateId, aProgress);
}
void ReportProgressToParentProcess(uint32_t aShutdownStateId,
Progress aProgress) {
MOZ_ASSERT(XRE_IsContentProcess());
MOZ_ASSERT(NS_IsMainThread());
ContentChild* contentChild = ContentChild::GetSingleton();
MOZ_ASSERT(contentChild);
contentChild->SendReportServiceWorkerShutdownProgress(aShutdownStateId,
aProgress);
}
void ReportServiceWorkerShutdownProgress(uint32_t aShutdownStateId,
Progress aProgress) {
MOZ_ASSERT(UnderlyingProgressValue(Progress::ParentProcessMainThread) <
UnderlyingProgressValue(aProgress));
MOZ_ASSERT(UnderlyingProgressValue(aProgress) <
UnderlyingProgressValue(Progress::EndGuard_));
nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(
__func__, [shutdownStateId = aShutdownStateId, progress = aProgress] {
if (XRE_IsParentProcess()) {
ReportProgressToServiceWorkerManager(shutdownStateId, progress);
} else {
ReportProgressToParentProcess(shutdownStateId, progress);
}
});
if (NS_IsMainThread()) {
MOZ_ALWAYS_SUCCEEDS(r->Run());
} else {
MOZ_ALWAYS_SUCCEEDS(NS_DispatchToMainThread(r.forget()));
}
}
void ReportServiceWorkerShutdownProgress(uint32_t aShutdownStateId) {
Progress progress = Progress::EndGuard_;
if (XRE_IsParentProcess()) {
mozilla::ipc::AssertIsOnBackgroundThread();
progress = Progress::ParentProcessIpdlBackgroundThread;
} else {
if (NS_IsMainThread()) {
progress = Progress::ContentProcessMainThread;
} else {
MOZ_ASSERT(RemoteWorkerService::Thread()->IsOnCurrentThread());
progress = Progress::ContentProcessWorkerLauncherThread;
}
}
ReportServiceWorkerShutdownProgress(aShutdownStateId, progress);
}
} // anonymous namespace
void MaybeReportServiceWorkerShutdownProgress(const ServiceWorkerOpArgs& aArgs,
bool aShutdownCompleted) {
if (XRE_IsParentProcess() && !XRE_IsE10sParentProcess()) {
return;
}
if (aShutdownCompleted) {
MOZ_ASSERT(aArgs.type() ==
ServiceWorkerOpArgs::TServiceWorkerTerminateWorkerOpArgs);
ReportServiceWorkerShutdownProgress(
aArgs.get_ServiceWorkerTerminateWorkerOpArgs().shutdownStateId(),
Progress::ShutdownCompleted);
return;
}
if (aArgs.type() ==
ServiceWorkerOpArgs::TServiceWorkerTerminateWorkerOpArgs) {
ReportServiceWorkerShutdownProgress(
aArgs.get_ServiceWorkerTerminateWorkerOpArgs().shutdownStateId());
}
}
} // namespace mozilla::dom
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