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f626276271
The hsbench tool provides an easy way to measure Hyperscan's performance for a particular set of patterns and corpus of data to be scanned.
72 lines
2.3 KiB
C++
72 lines
2.3 KiB
C++
/*
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* Copyright (c) 2015, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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* \brief Simple thread barrier.
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*/
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#ifndef TOOLS_THREAD_BARRIER_H
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#define TOOLS_THREAD_BARRIER_H
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#include <condition_variable>
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#include <mutex>
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/**
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* \brief Simple thread barrier class.
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*
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* Blocks until wait() has been called N times.
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*/
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class thread_barrier {
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public:
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explicit thread_barrier(unsigned int n) : max(n) {
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if (max == 0) {
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throw std::runtime_error("invalid barrier");
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}
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}
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void wait() {
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std::unique_lock<std::mutex> lock(mtx);
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count++;
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if (count >= max) {
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count = 0;
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condvar.notify_all();
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} else {
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condvar.wait(lock);
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}
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}
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private:
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std::mutex mtx;
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std::condition_variable condvar;
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unsigned int count = 0;
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unsigned int max;
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};
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#endif // TOOLS_THREAD_BARRIER_H
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