91 lines
1.6 KiB
C
91 lines
1.6 KiB
C
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#include <errno.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#define NKEYS 100
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static pthread_key_t keys[NKEYS];
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static pthread_barrier_t b;
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static void *
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tf (void *arg)
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{
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void *res = NULL;
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for (int i = 0; i < NKEYS; ++i)
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{
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void *p = pthread_getspecific (keys[i]);
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/* Use an arbitrary but valid pointer as the value. */
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pthread_setspecific (keys[i], (void *) keys);
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if (p != NULL)
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res = p;
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}
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if (arg != NULL)
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{
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pthread_barrier_wait (arg);
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pthread_barrier_wait (arg);
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}
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return res;
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}
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static int
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do_test (void)
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{
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pthread_barrier_init (&b, NULL, 2);
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for (int i = 0; i < NKEYS; ++i)
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if (pthread_key_create (&keys[i], NULL) != 0)
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{
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puts ("cannot create keys");
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return 1;
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}
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pthread_t th;
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if (pthread_create (&th, NULL, tf, &b) != 0)
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{
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puts ("cannot create thread in parent");
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return 1;
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}
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pthread_barrier_wait (&b);
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pid_t pid = fork ();
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if (pid == 0)
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{
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if (pthread_create (&th, NULL, tf, NULL) != 0)
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{
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puts ("cannot create thread in child");
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exit (1);
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}
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void *res;
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pthread_join (th, &res);
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exit (res != NULL);
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}
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else if (pid == -1)
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{
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puts ("cannot create child process");
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return 1;
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}
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int s;
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if (TEMP_FAILURE_RETRY (waitpid (pid, &s, 0)) != pid)
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{
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puts ("failing to wait for child process");
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return 1;
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}
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pthread_barrier_wait (&b);
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pthread_join (th, NULL);
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return !WIFEXITED (s) ? 2 : WEXITSTATUS (s);
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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