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
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#include <errno.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include "../test-skeleton.h"
#ifdef __ARCH_USE_MMU__
static pid_t pid;
static void *
pid_thread (void *arg)
{
if (pid != getpid ())
{
printf ("pid wrong in thread: should be %d, is %d\n",
(int) pid, (int) getpid ());
return (void *) 1L;
}
return NULL;
}
static int
do_test (void)
{
pid = getpid ();
pthread_t thr;
int ret = pthread_create (&thr, NULL, pid_thread, NULL);
if (ret)
{
printf ("pthread_create failed: %d\n", ret);
return 1;
}
void *thr_ret;
ret = pthread_join (thr, &thr_ret);
if (ret)
{
printf ("pthread_create failed: %d\n", ret);
return 1;
}
else if (thr_ret)
{
printf ("thread getpid failed\n");
return 1;
}
pid_t child = fork ();
if (child == -1)
{
printf ("fork failed: %m\n");
return 1;
}
else if (child == 0)
{
if (pid == getpid ())
{
puts ("pid did not change after fork");
exit (1);
}
pid = getpid ();
ret = pthread_create (&thr, NULL, pid_thread, NULL);
if (ret)
{
printf ("pthread_create failed: %d\n", ret);
return 1;
}
ret = pthread_join (thr, &thr_ret);
if (ret)
{
printf ("pthread_create failed: %d\n", ret);
return 1;
}
else if (thr_ret)
{
printf ("thread getpid failed\n");
return 1;
}
return 0;
}
int status;
if (TEMP_FAILURE_RETRY (waitpid (child, &status, 0)) != child)
{
puts ("waitpid failed");
kill (child, SIGKILL);
return 1;
}
if (!WIFEXITED (status))
{
if (WIFSIGNALED (status))
printf ("died from signal %s\n", strsignal (WTERMSIG (status)));
else
puts ("did not terminate correctly");
return 1;
}
if (WEXITSTATUS (status) != 0)
{
printf ("exit code %d\n", WEXITSTATUS (status));
return 1;
}
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
#else
int main(void)
{
printf("Skipping test on non-mmu host!\n");
return 23;
}
#endif
|
