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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/. */
#ifndef mozilla_JSThreadPool_h
#define mozilla_JSThreadPool_h
#include "mozilla/Unused.h"
#include "nsIThreadPool.h"
#include "js/Utility.h"
#include "js/UniquePtr.h"
namespace mozilla {
/*
* Since XPCOM thread pools dispatch nsIRunnable*, we want a way to take the
* specific job that JS wants to dispatch offthread, and run it via an
* nsIRunnable(). RunnableTasks should self-destroy.
*/
class HelperThreadTaskHandler : public Runnable {
public:
NS_IMETHOD Run() override {
mOffThreadTask->runTask();
mOffThreadTask.reset();
return NS_OK;
}
explicit HelperThreadTaskHandler(js::UniquePtr<RunnableTask> task)
: Runnable("HelperThreadTaskHandler"), mOffThreadTask(std::move(task)) {}
private:
~HelperThreadTaskHandler() = default;
js::UniquePtr<RunnableTask> mOffThreadTask;
};
/*
* HelperThreadPool is a thread pool infrastructure for JS offthread tasks. It
* holds the actual instance of a thread pool that we instantiate. The intention
* is to have a way to manage some of the things GlobalHelperThreadState does
* independently of nsThreadPool.
*/
class HelperThreadPool {
public:
nsresult Dispatch(already_AddRefed<HelperThreadTaskHandler> aRunnable);
void Shutdown();
HelperThreadPool();
virtual ~HelperThreadPool() = default;
private:
RefPtr<nsIThreadPool> mPool;
};
} // namespace mozilla
#endif
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