Source code
Revision control
Copy as Markdown
Other Tools
/* -*- 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,
#include "mozilla/dom/quota/ThreadUtils.h"
#include "mozilla/dom/quota/QuotaCommon.h"
#include "mozilla/dom/quota/ResultExtensions.h"
#include "nsIThreadInternal.h"
#include "nsThreadPool.h"
#include "nsThreadUtils.h"
#include "prinrval.h"
#include "prthread.h"
namespace mozilla::dom::quota {
namespace {
class RunAfterProcessingCurrentEventHelper final : public nsIThreadObserver {
public:
nsresult Init(std::function<void()>&& aCallback);
NS_DECL_ISUPPORTS
NS_DECL_NSITHREADOBSERVER
private:
~RunAfterProcessingCurrentEventHelper() = default;
std::function<void()> mCallback;
};
} // namespace
nsresult RunAfterProcessingCurrentEventHelper::Init(
std::function<void()>&& aCallback) {
nsCOMPtr<nsIThreadInternal> thread = do_QueryInterface(NS_GetCurrentThread());
MOZ_ASSERT(thread);
QM_TRY(MOZ_TO_RESULT(thread->AddObserver(this)));
mCallback = std::move(aCallback);
return NS_OK;
}
NS_IMPL_ISUPPORTS(RunAfterProcessingCurrentEventHelper, nsIThreadObserver)
NS_IMETHODIMP
RunAfterProcessingCurrentEventHelper::OnDispatchedEvent() {
MOZ_CRASH("Should never be called!");
}
NS_IMETHODIMP
RunAfterProcessingCurrentEventHelper::OnProcessNextEvent(
nsIThreadInternal* /* aThread */, bool /* aMayWait */) {
MOZ_CRASH("Should never be called!");
}
NS_IMETHODIMP
RunAfterProcessingCurrentEventHelper::AfterProcessNextEvent(
nsIThreadInternal* aThread, bool /* aEventWasProcessed */) {
MOZ_ASSERT(aThread);
QM_WARNONLY_TRY(MOZ_TO_RESULT(aThread->RemoveObserver(this)));
auto callback = std::move(mCallback);
callback();
return NS_OK;
}
nsresult RunAfterProcessingCurrentEvent(std::function<void()>&& aCallback) {
MOZ_DIAGNOSTIC_ASSERT(
!nsThreadPool::GetCurrentThreadPool(),
"Call to RunAfterProcessingCurrentEvent() from thread pool!");
auto helper = MakeRefPtr<RunAfterProcessingCurrentEventHelper>();
QM_TRY(MOZ_TO_RESULT(helper->Init(std::move(aCallback))));
return NS_OK;
}
void SleepIfEnabled(StripAtomic<RelaxedAtomicUint32> aMirroredPrefValue) {
uint32_t pauseOnThreadMs = aMirroredPrefValue;
if (pauseOnThreadMs > 0) {
PR_Sleep(PR_MillisecondsToInterval(pauseOnThreadMs));
}
}
} // namespace mozilla::dom::quota