/* * count1.c * * * -------------------------------------------------------------------------- * * Pthreads-win32 - POSIX Threads Library for Win32 * Copyright(C) 1998 John E. Bossom * Copyright(C) 1999,2005 Pthreads-win32 contributors * * Contact Email: rpj@callisto.canberra.edu.au * * The current list of contributors is contained * in the file CONTRIBUTORS included with the source * code distribution. The list can also be seen at the * following World Wide Web location: * http://sources.redhat.com/pthreads-win32/contributors.html * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library in the file COPYING.LIB; * if not, write to the Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA * * -------------------------------------------------------------------------- * * Description: * Test some basic assertions about the number of threads at runtime. */ #include "test.h" #define NUMTHREADS (30) static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; static pthread_t threads[NUMTHREADS]; static unsigned numThreads = 0; void * myfunc(void *arg) { pthread_mutex_lock(&lock); numThreads++; pthread_mutex_unlock(&lock); Sleep(1000); return 0; } int main() { int i; int maxThreads = sizeof(threads) / sizeof(pthread_t); /* * Spawn NUMTHREADS threads. Each thread should increment the * numThreads variable, sleep for one second. */ for (i = 0; i < maxThreads; i++) { assert(pthread_create(&threads[i], NULL, myfunc, 0) == 0); } /* * Wait for all the threads to exit. */ for (i = 0; i < maxThreads; i++) { assert(pthread_join(threads[i], NULL) == 0); } /* * Check the number of threads created. */ assert((int) numThreads == maxThreads); /* * Success. */ return 0; }