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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.2/] [gdb/] [testsuite/] [gdb.threads/] [watchthreads.c] - Rev 330
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/* This testcase is part of GDB, the GNU debugger. Copyright 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. 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/>. This file is copied from schedlock.c. */ #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <pthread.h> void *thread_function (void *arg); /* Function executed by each thread. */ #define NUM 5 unsigned int args[NUM+1]; int main () { int res; pthread_t threads[NUM]; void *thread_result; long i; /* To keep the test determinative, initialize args first, then start all the threads. Otherwise, the way watchthreads.exp is written, we have to worry about things like threads[0] getting to 29 hits of args[0] before args[1] gets changed. */ for (i = 0; i < NUM; i++) { /* The call to usleep is so that when the watchpoint triggers, the pc is still on the same line. */ args[i] = 1; usleep (1); /* Init value. */ } for (i = 0; i < NUM; i++) { res = pthread_create (&threads[i], NULL, thread_function, (void *) i); } args[i] = 1; thread_function ((void *) i); exit (EXIT_SUCCESS); } void * thread_function (void *arg) { int my_number = (long) arg; int *myp = (int *) &args[my_number]; /* Don't run forever. Run just short of it :) */ while (*myp > 0) { (*myp) ++; usleep (1); /* Loop increment. */ } pthread_exit (NULL); }