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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [gdb.threads/] [multi-create.c] - Rev 330
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/* Create threads from multiple threads in parallel. Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <pthread.h> #include <stdio.h> #include <limits.h> #define NUM_CREATE 1 #define NUM_THREAD 8 void * thread_function (void *arg) { int x = * (int *) arg; printf ("Thread <%d> executing\n", x); return NULL; } void * create_function (void *arg) { pthread_attr_t attr; pthread_t threads[NUM_THREAD]; int args[NUM_THREAD]; int i = * (int *) arg; int j; pthread_attr_init (&attr); /* set breakpoint 1 here. */ pthread_attr_setstacksize (&attr, 2*PTHREAD_STACK_MIN); /* Create a ton of quick-executing threads, then wait for them to complete. */ for (j = 0; j < NUM_THREAD; ++j) { args[j] = i * 1000 + j; pthread_create (&threads[j], &attr, thread_function, &args[j]); } for (j = 0; j < NUM_THREAD; ++j) pthread_join (threads[j], NULL); pthread_attr_destroy (&attr); return NULL; } int main (int argc, char **argv) { pthread_attr_t attr; pthread_t threads[NUM_CREATE]; int args[NUM_CREATE]; int n, i; pthread_attr_init (&attr); pthread_attr_setstacksize (&attr, 2*PTHREAD_STACK_MIN); for (n = 0; n < 100; ++n) { for (i = 0; i < NUM_CREATE; i++) { args[i] = i; pthread_create (&threads[i], &attr, create_function, &args[i]); } create_function (&i); for (i = 0; i < NUM_CREATE; i++) pthread_join (threads[i], NULL); } pthread_attr_destroy (&attr); return 0; }