64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
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/*
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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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