gecko-dev/dom/worklet/WorkletThread.h
Karl Tomlinson 01f71ced46 bug 1513722 expose WorkletJSContext creation and deletion and delay creation until required r=baku
The on-demand creation from Worklet.addModule() provides the same creation
path for clients that provide their own thread.

Differential Revision: https://phabricator.services.mozilla.com/D13217

--HG--
extra : moz-landing-system : lando
2018-12-20 07:28:04 +00:00

72 lines
2.0 KiB
C++

/* -*- 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/. */
#ifndef mozilla_dom_worklet_WorkletThread_h
#define mozilla_dom_worklet_WorkletThread_h
#include "mozilla/Attributes.h"
#include "mozilla/CondVar.h"
#include "mozilla/RefPtr.h"
#include "mozilla/UniquePtr.h"
#include "nsThread.h"
class nsIRunnable;
namespace mozilla {
namespace dom {
class WorkletThread final : public nsThread, public nsIObserver {
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSIOBSERVER
static already_AddRefed<WorkletThread> Create();
// Threads that call EnsureCycleCollectedJSContext must call
// DeleteCycleCollectedJSContext::Get() before terminating. Clients of
// Create() do not need to do this as Terminate() will ensure this happens.
static void EnsureCycleCollectedJSContext(JSRuntime* aParentRuntime);
static void DeleteCycleCollectedJSContext();
static bool IsOnWorkletThread();
static void AssertIsOnWorkletThread();
nsresult DispatchRunnable(already_AddRefed<nsIRunnable> aRunnable);
void Terminate();
private:
WorkletThread();
~WorkletThread();
void RunEventLoop();
class PrimaryRunnable;
void TerminateInternal();
class TerminateRunnable;
// This should only be called by consumers that have an
// nsIEventTarget/nsIThread pointer.
NS_IMETHOD
Dispatch(already_AddRefed<nsIRunnable> aRunnable, uint32_t aFlags) override;
NS_IMETHOD
DispatchFromScript(nsIRunnable* aRunnable, uint32_t aFlags) override;
NS_IMETHOD
DelayedDispatch(already_AddRefed<nsIRunnable>, uint32_t) override;
bool mExitLoop; // worklet execution thread
bool mIsTerminating; // main thread
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_worklet_WorkletThread_h