thread_check.c revision 1.6 
1/* Copyright (C) 2004-2016 Free Software Foundation, Inc.
2
3   This program is free software; you can redistribute it and/or modify
4   it under the terms of the GNU General Public License as published by
5   the Free Software Foundation; either version 3 of the License, or
6   (at your option) any later version.
7
8   This program is distributed in the hope that it will be useful,
9   but WITHOUT ANY WARRANTY; without even the implied warranty of
10   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11   GNU General Public License for more details.
12
13   You should have received a copy of the GNU General Public License
14   along with this program.  If not, see <http://www.gnu.org/licenses/>.
15
16   This file was written by Steve Munroe (sjmunroe@us.ibm.com). */
17
18/* Test break points and single step on thread functions.  */
19
20#include <string.h>
21#include <unistd.h>
22#include <pthread.h>
23#include <stdlib.h>
24#include <stdio.h>
25#include <errno.h>
26
27#define N       2
28
29static void *
30tf (void *arg)
31{
32    int n = (int) (long int) arg;
33    char number[160];
34    int unslept = 10;
35
36    sprintf(number, "tf(%ld): begin", (long)arg);
37    puts (number);
38
39    while (unslept > 0)
40        unslept = sleep(unslept);
41
42    sprintf(number, "tf(%ld): end", (long)arg);
43    puts (number);
44    return NULL;
45}
46
47int main (int argc, char *argv[])
48{
49    int n;
50    int unslept = 2;
51    pthread_t th[N];
52
53    for (n = 0; n < N; ++n)
54    if (pthread_create (&th[n], NULL, tf, (void *) (long int) n) != 0)
55    {
56        while (unslept > 0)
57           unslept = sleep(2);
58        puts ("create failed");
59        exit (1);
60    }
61
62    puts("after create");
63
64    for (n = 0; n < N; ++n)
65    if (pthread_join (th[n], NULL) != 0)
66    {
67        puts ("join failed");
68        exit (1);
69    }
70
71    puts("after join");
72    return 0;
73}
74