1#include <errno.h>
2#include <pthread.h>
3#include <stdio.h>
4#include <stdlib.h>
5#include <unistd.h>
6#include <sys/wait.h>
7
8#define NKEYS 100
9static pthread_key_t keys[NKEYS];
10static pthread_barrier_t b;
11
12
13static void *
14tf (void *arg)
15{
16 void *res = NULL;
17 for (int i = 0; i < NKEYS; ++i)
18 {
19 void *p = pthread_getspecific (key: keys[i]);
20 /* Use an arbitrary but valid pointer as the value. */
21 pthread_setspecific (key: keys[i], pointer: (void *) keys);
22 if (p != NULL)
23 res = p;
24 }
25 if (arg != NULL)
26 {
27 pthread_barrier_wait (barrier: arg);
28 pthread_barrier_wait (barrier: arg);
29 }
30 return res;
31}
32
33
34static int
35do_test (void)
36{
37 pthread_barrier_init (barrier: &b, NULL, count: 2);
38
39 for (int i = 0; i < NKEYS; ++i)
40 if (pthread_key_create (key: &keys[i], NULL) != 0)
41 {
42 puts (s: "cannot create keys");
43 return 1;
44 }
45
46 pthread_t th;
47 if (pthread_create (newthread: &th, NULL, start_routine: tf, arg: &b) != 0)
48 {
49 puts (s: "cannot create thread in parent");
50 return 1;
51 }
52
53 pthread_barrier_wait (barrier: &b);
54
55 pid_t pid = fork ();
56 if (pid == 0)
57 {
58 if (pthread_create (newthread: &th, NULL, start_routine: tf, NULL) != 0)
59 {
60 puts (s: "cannot create thread in child");
61 exit (1);
62 }
63
64 void *res;
65 pthread_join (th: th, thread_return: &res);
66
67 exit (res != NULL);
68 }
69 else if (pid == -1)
70 {
71 puts (s: "cannot create child process");
72 return 1;
73 }
74
75 int s;
76 if (TEMP_FAILURE_RETRY (waitpid (pid, &s, 0)) != pid)
77 {
78 puts (s: "failing to wait for child process");
79 return 1;
80 }
81
82 pthread_barrier_wait (barrier: &b);
83 pthread_join (th: th, NULL);
84
85 return !WIFEXITED (s) ? 2 : WEXITSTATUS (s);
86}
87
88
89#define TEST_FUNCTION do_test ()
90#include "../test-skeleton.c"
91

source code of glibc/sysdeps/pthread/tst-tsd6.c