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
93
94
95
96
97
98
99
100
101
102
103
104
|
/*___INFO__MARK_BEGIN__*/
/*************************************************************************
*
* The Contents of this file are made available subject to the terms of
* the Sun Industry Standards Source License Version 1.2
*
* Sun Microsystems Inc., March, 2001
*
*
* Sun Industry Standards Source License Version 1.2
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.2 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://gridengine.sunsource.net/Gridengine_SISSL_license.html
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2001 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
************************************************************************/
/*___INFO__MARK_END__*/
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <pthread.h>
void *t1_errno(void *args)
{
int i;
int *ret = (int *)args;
*ret = 0;
errno = 5;
for (i = 0; i < 5; i++) {
if (errno != 5) {
fprintf(stderr, "t1: errno = %d\n", errno);
*ret = 1;
break;
}
sleep(1);
}
return NULL;
}
void *t2_errno(void *args)
{
int i;
int *ret = (int *)args;
FILE *fd;
*ret = 0;
errno = 0;
fd = fopen("/tmp/blablablanotexisting", "r");
if (fd != NULL) {
fprintf(stderr, "file /tmp/blablablanotexisting does exist, please remove it!\n");
*ret = 1;
} else {
for (i = 0; i < 5; i++) {
if (errno != ENOENT) {
fprintf(stderr, "t2: errno = %d\n", errno);
*ret = 1;
break;
}
sleep(1);
}
}
return NULL;
}
int main(int argc, const char *argv[])
{
pthread_t t1, t2;
int ret1, ret2;
printf("testing access to errno from two threads\n");
pthread_create(&t1, NULL, t1_errno, (void*)&ret1);
pthread_create(&t2, NULL, t2_errno, (void*)&ret2);
pthread_join(t1, NULL);
pthread_join(t2, NULL);
if (ret1 != 0 || ret2 != 0) {
return 1;
}
return 0;
}
|
