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45 lines
918 B
C++
45 lines
918 B
C++
/*
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* AsyncRunner.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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#include <tbb/task_arena.h>
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#include <tbb/task_group.h>
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VCMI_LIB_NAMESPACE_BEGIN
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/// Helper class for running asynchronous tasks using TBB thread pool
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class AsyncRunner : boost::noncopyable
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{
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tbb::task_arena arena;
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tbb::task_group taskGroup;
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public:
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/// Runs the provided functor asynchronously on a thread from the TBB worker pool.
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template<typename Functor>
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void run(Functor && f)
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{
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arena.enqueue(taskGroup.defer(std::forward<Functor>(f)));
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}
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/// Waits for all previously enqueued task.
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/// Re-entrable - waiting for tasks does not prevent submitting new tasks
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void wait()
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{
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taskGroup.wait();
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}
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~AsyncRunner()
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{
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wait();
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}
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};
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VCMI_LIB_NAMESPACE_END
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