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63 lines
1.8 KiB
63 lines
1.8 KiB
/* |
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* piThread.c: |
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* Provide a simplified interface to pthreads |
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* |
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* Copyright (c) 2012 Gordon Henderson |
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*********************************************************************** |
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* This file is part of wiringPi: |
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* https://projects.drogon.net/raspberry-pi/wiringpi/ |
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* |
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* wiringPi is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* wiringPi is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with wiringPi. |
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* If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************** |
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*/ |
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#include <pthread.h> |
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#include "wiringPi.h" |
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static pthread_mutex_t piMutexes [4] ; |
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/* |
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* piThreadCreate: |
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* Create and start a thread |
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********************************************************************************* |
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*/ |
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int piThreadCreate (void *(*fn)(void *)) |
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{ |
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pthread_t myThread ; |
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return pthread_create (&myThread, NULL, fn, NULL) ; |
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} |
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/* |
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* piLock: piUnlock: |
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* Activate/Deactivate a mutex. |
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* We're keeping things simple here and only tracking 4 mutexes which |
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* is more than enough for out entry-level pthread programming |
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********************************************************************************* |
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*/ |
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void piLock (int key) |
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{ |
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pthread_mutex_lock (&piMutexes [key]) ; |
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} |
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void piUnlock (int key) |
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{ |
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pthread_mutex_unlock (&piMutexes [key]) ; |
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} |
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