3 * Provide a simplified interface to pthreads
5 * Copyright (c) 2012 Gordon Henderson
6 ***********************************************************************
7 * This file is part of wiringPi:
8 * https://projects.drogon.net/raspberry-pi/wiringpi/
10 * wiringPi is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as
12 * published by the Free Software Foundation, either version 3 of the
13 * License, or (at your option) any later version.
15 * wiringPi is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with wiringPi.
22 * If not, see <http://www.gnu.org/licenses/>.
23 ***********************************************************************
29 static pthread_mutex_t piMutexes [4] ;
35 * Create and start a thread
36 *********************************************************************************
39 int piThreadCreate (void *(*fn)(void *))
43 return pthread_create (&myThread, NULL, fn, NULL) ;
48 * Activate/Deactivate a mutex.
49 * We're keeping things simple here and only tracking 4 mutexes which
50 * is more than enough for out entry-level pthread programming
51 *********************************************************************************
56 pthread_mutex_lock (&piMutexes [key]) ;
59 void piUnlock (int key)
61 pthread_mutex_unlock (&piMutexes [key]) ;