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| -rw-r--r-- | tests/once2.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/tests/once2.c b/tests/once2.c new file mode 100644 index 0000000..22881d8 --- /dev/null +++ b/tests/once2.c @@ -0,0 +1,94 @@ +/* + * once2.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 + * + * -------------------------------------------------------------------------- + * + * Create several static pthread_once objects and channel several threads + * through each. + * + * Depends on API functions: + * pthread_once() + * pthread_create() + */ + +#include "test.h" + +#define NUM_THREADS 100 /* Targeting each once control */ +#define NUM_ONCE 10 + +pthread_once_t o = PTHREAD_ONCE_INIT; +pthread_once_t once[NUM_ONCE]; + +static int numOnce = 0; +static int numThreads = 0; + +void +myfunc(void) +{ + numOnce++; + /* Simulate slow once routine so that following threads pile up behind it */ + Sleep(100); +} + +void * +mythread(void * arg) +{ + assert(pthread_once(&once[(int) arg], myfunc) == 0); + numThreads++; + return 0; +} + +int +main() +{ + pthread_t t[NUM_THREADS][NUM_ONCE]; + int i, j; + + for (j = 0; j < NUM_ONCE; j++) + { + once[j] = o; + + for (i = 0; i < NUM_THREADS; i++) + assert(pthread_create(&t[i][j], NULL, mythread, (void *) j) == 0); + } + + for (j = 0; j < NUM_ONCE; j++) + for (i = 0; i < NUM_THREADS; i++) + if (pthread_join(t[i][j], NULL) != 0) + printf("Join failed for [thread,once] = [%d,%d]\n", i, j); + + assert(numOnce == NUM_ONCE); + assert(numThreads == NUM_THREADS * NUM_ONCE); + + return 0; +} |