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https://github.com/Relintai/pandemonium_engine.git
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53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
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// ======================================================================== //
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// Copyright 2009-2019 Intel Corporation //
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// //
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// Licensed under the Apache License, Version 2.0 (the "License"); //
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// you may not use this file except in compliance with the License. //
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// You may obtain a copy of the License at //
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// //
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// http://www.apache.org/licenses/LICENSE-2.0 //
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// //
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// Unless required by applicable law or agreed to in writing, software //
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// distributed under the License is distributed on an "AS IS" BASIS, //
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
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// See the License for the specific language governing permissions and //
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// limitations under the License. //
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// ======================================================================== //
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#pragma once
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#include "platform.h"
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#include <mutex>
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#include <condition_variable>
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namespace oidn {
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class Barrier
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{
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private:
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std::mutex m;
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std::condition_variable cv;
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volatile int count;
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public:
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Barrier(int count) : count(count) {}
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void wait()
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{
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std::unique_lock<std::mutex> lk(m);
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count--;
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if (count == 0)
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{
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lk.unlock();
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cv.notify_all();
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}
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else
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{
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cv.wait(lk, [&]{ return count == 0; });
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}
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}
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};
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} // namespace oidn
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