2022-01-13 14:05:24 +08:00
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/* Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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2021-10-21 19:04:49 +08:00
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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
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, 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 NVIDIA CORPORATION nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef MULTITHREADING_H
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#define MULTITHREADING_H
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// Simple portable thread library.
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#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
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// Windows threads.
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#include <windows.h>
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typedef HANDLE CUTThread;
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typedef unsigned(WINAPI *CUT_THREADROUTINE)(void *);
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struct CUTBarrier {
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CRITICAL_SECTION criticalSection;
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HANDLE barrierEvent;
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int releaseCount;
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int count;
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};
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#define CUT_THREADPROC unsigned WINAPI
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#define CUT_THREADEND return 0
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#else
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// POSIX threads.
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#include <pthread.h>
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typedef pthread_t CUTThread;
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typedef void *(*CUT_THREADROUTINE)(void *);
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#define CUT_THREADPROC void *
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#define CUT_THREADEND return 0
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struct CUTBarrier {
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pthread_mutex_t mutex;
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pthread_cond_t conditionVariable;
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int releaseCount;
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int count;
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};
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Create thread.
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CUTThread cutStartThread(CUT_THREADROUTINE, void *data);
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// Wait for thread to finish.
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void cutEndThread(CUTThread thread);
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// Wait for multiple threads.
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void cutWaitForThreads(const CUTThread *threads, int num);
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// Create barrier.
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CUTBarrier cutCreateBarrier(int releaseCount);
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// Increment barrier. (execution continues)
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void cutIncrementBarrier(CUTBarrier *barrier);
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// Wait for barrier release.
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void cutWaitForBarrier(CUTBarrier *barrier);
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// Destroy barrier
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void cutDestroyBarrier(CUTBarrier *barrier);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // MULTITHREADING_H
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