gecko-dev/xpcom/threads/SystemGroup.h

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1.4 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_SystemGroup_h
#define mozilla_SystemGroup_h
#include "mozilla/TaskCategory.h"
#include "mozilla/SchedulerGroup.h"
// The SystemGroup should be used for dispatching runnables that don't need to
// touch web content. Runnables dispatched to the SystemGroup are run in order
// relative to each other, but their order relative to other runnables is
// undefined.
namespace mozilla {
class SystemGroup
{
public:
// This method is safe to use from any thread.
static nsresult Dispatch(TaskCategory aCategory,
already_AddRefed<nsIRunnable>&& aRunnable);
// This method is safe to use from any thread.
static nsISerialEventTarget* EventTargetFor(TaskCategory aCategory);
// Must be called on the main thread. The AbstractThread can always be used
// off the main thread.
static AbstractThread* AbstractMainThreadFor(TaskCategory aCategory);
static void InitStatic();
static void Shutdown();
// Returns true if SystemGroup has been initialized.
static bool Initialized();
};
} // namespace mozilla
#endif // mozilla_SystemGroup_h