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- /* This testcase is part of GDB, the GNU debugger.
- Copyright 2002-2022 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);
- }
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