/* * MIT License * * Copyright (c) 2020 Ozan Tezcan * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #define _XOPEN_SOURCE 700 #include "sc_mutex.h" #include #if defined(_WIN32) || defined(_WIN64) int sc_mutex_init(struct sc_mutex *mtx) { InitializeCriticalSection(&mtx->mtx); return 0; } int sc_mutex_term(struct sc_mutex *mtx) { DeleteCriticalSection(&mtx->mtx); return 0; } void sc_mutex_lock(struct sc_mutex *mtx) { EnterCriticalSection(&mtx->mtx); } void sc_mutex_unlock(struct sc_mutex *mtx) { LeaveCriticalSection(&mtx->mtx); } #else int sc_mutex_init(struct sc_mutex *mtx) { int rc, rv; pthread_mutexattr_t attr; pthread_mutex_t mut = PTHREAD_MUTEX_INITIALIZER; mtx->mtx = mut; // May fail on OOM rc = pthread_mutexattr_init(&attr); if (rc != 0) { return -1; } // This won't fail as long as we pass correct params. rc = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_NORMAL); assert (rc == 0); // May fail on OOM rc = pthread_mutex_init(&mtx->mtx, &attr); // This won't fail as long as we pass correct param. rv = pthread_mutexattr_destroy(&attr); assert(rv == 0); return rc != 0 ? -1 : 0; } int sc_mutex_term(struct sc_mutex *mtx) { int rc; rc = pthread_mutex_destroy(&mtx->mtx); return rc != 0 ? -1 : 0; } void sc_mutex_lock(struct sc_mutex *mtx) { int rc; // This won't fail as long as we pass correct param. rc = pthread_mutex_lock(&mtx->mtx); assert(rc == 0); } void sc_mutex_unlock(struct sc_mutex *mtx) { int rc; // This won't fail as long as we pass correct param. rc = pthread_mutex_unlock(&mtx->mtx); assert(rc == 0); } #endif