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116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/*
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* MIT License
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*
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* Copyright (c) 2021 Ozan Tezcan
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _XOPEN_SOURCE
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#define _XOPEN_SOURCE 700
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#endif
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#include "sc_mutex.h"
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#include <assert.h>
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#if defined(_WIN32) || defined(_WIN64)
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int sc_mutex_init(struct sc_mutex *mtx)
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{
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InitializeCriticalSection(&mtx->mtx);
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return 0;
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}
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int sc_mutex_term(struct sc_mutex *mtx)
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{
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DeleteCriticalSection(&mtx->mtx);
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return 0;
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}
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void sc_mutex_lock(struct sc_mutex *mtx)
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{
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EnterCriticalSection(&mtx->mtx);
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}
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void sc_mutex_unlock(struct sc_mutex *mtx)
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{
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LeaveCriticalSection(&mtx->mtx);
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}
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#else
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int sc_mutex_init(struct sc_mutex *mtx)
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{
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int rc, rv;
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pthread_mutexattr_t attr;
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pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER;
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mtx->mtx = mut;
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// May fail on OOM
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rc = pthread_mutexattr_init(&attr);
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if (rc != 0) {
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return -1;
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}
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// This won't fail as long as we pass correct params.
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rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL);
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assert (rc == 0);
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// May fail on OOM
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rc = pthread_mutex_init(&mtx->mtx, &attr);
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// This won't fail as long as we pass correct param.
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rv = pthread_mutexattr_destroy(&attr);
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assert(rv == 0);
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(void) rv;
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return rc != 0 ? -1 : 0;
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}
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int sc_mutex_term(struct sc_mutex *mtx)
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{
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int rc;
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rc = pthread_mutex_destroy(&mtx->mtx);
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return rc != 0 ? -1 : 0;
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}
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void sc_mutex_lock(struct sc_mutex *mtx)
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{
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int rc;
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// This won't fail as long as we pass correct param.
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rc = pthread_mutex_lock(&mtx->mtx);
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assert(rc == 0);
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(void) rc;
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}
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void sc_mutex_unlock(struct sc_mutex *mtx)
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{
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int rc;
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// This won't fail as long as we pass correct param.
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rc = pthread_mutex_unlock(&mtx->mtx);
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assert(rc == 0);
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(void) rc;
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}
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#endif
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