1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/* Test program for non-stop debugging.
Copyright 1996, 2002, 2003, 2004, 2007, 2008 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 <stdio.h>
#include <stdlib.h>
#include <pthread.h>
/* Under OSF 2.0 & 3.0 and HPUX 10, the second arg of pthread_create
is prototyped to be just a "pthread_attr_t", while under Solaris it
is a "pthread_attr_t *". Arg! */
#if defined (__osf__) || defined (__hpux__)
#define PTHREAD_CREATE_ARG2(arg) arg
#define PTHREAD_CREATE_NULL_ARG2 null_attr
static pthread_attr_t null_attr;
#else
#define PTHREAD_CREATE_ARG2(arg) &arg
#define PTHREAD_CREATE_NULL_ARG2 NULL
#endif
int exit_first_thread = 0;
void break_at_me (int id, int i)
{
}
void *
worker (void *arg)
{
int id = *(int *)arg;
int i = 0;
/* When gdb is running, it sets hidden breakpoints in the thread
library. The signals caused by these hidden breakpoints can
cause system calls such as 'sleep' to return early. Pay attention
to the return value from 'sleep' to get the full sleep. */
for (;;++i)
{
int unslept = 1;
while (unslept > 0)
unslept = sleep (unslept);
if (exit_first_thread && id == 0)
return;
break_at_me (id, i);
}
}
pthread_t
create_thread (int id)
{
pthread_t tid;
/* This memory will be leaked, we don't care for a test. */
int *id2 = malloc (sizeof (int));
*id2 = id;
if (pthread_create (&tid, PTHREAD_CREATE_NULL_ARG2, worker, (void *) id2))
{
perror ("pthread_create 1");
exit (1);
}
return tid;
}
int
main (int argc, char *argv[])
{
pthread_t tid;
create_thread (0);
sleep (1);
tid = create_thread (1);
pthread_join (tid, NULL);
return 0;
}
|
