nptl/tst-getpid3.c

   1 #include <errno.h>
   2 #include <pthread.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <unistd.h>
   7 #include <sys/wait.h>
   8
   9
  10 static pid_t pid;
  11
  12 static void *
  13 pid_thread (void *arg)
  14 {
  15   if (pid != getpid ())
  16     {
  17       printf ("pid wrong in thread: should be %d, is %d\n",
  18               (int) pid, (int) getpid ());
  19       return (void *) 1L;
  20     }
  21
  22   return NULL;
  23 }
  24
  25 static int
  26 do_test (void)
  27 {
  28   pid = getpid ();
  29
  30   pthread_t thr;
  31   int ret = pthread_create (&thr, NULL, pid_thread, NULL);
  32   if (ret)
  33     {
  34       printf ("pthread_create failed: %d\n", ret);
  35       return 1;
  36     }
  37
  38   void *thr_ret;
  39   ret = pthread_join (thr, &thr_ret);
  40   if (ret)
  41     {
  42       printf ("pthread_create failed: %d\n", ret);
  43       return 1;
  44     }
  45   else if (thr_ret)
  46     {
  47       printf ("thread getpid failed\n");
  48       return 1;
  49     }
  50
  51   pid_t child = fork ();
  52   if (child == -1)
  53     {
  54       printf ("fork failed: %m\n");
  55       return 1;
  56     }
  57   else if (child == 0)
  58     {
  59       if (pid == getpid ())
  60         {
  61           puts ("pid did not change after fork");
  62           exit (1);
  63         }
  64
  65       pid = getpid ();
  66       ret = pthread_create (&thr, NULL, pid_thread, NULL);
  67       if (ret)
  68         {
  69           printf ("pthread_create failed: %d\n", ret);
  70           return 1;
  71         }
  72
  73       ret = pthread_join (thr, &thr_ret);
  74       if (ret)
  75         {
  76           printf ("pthread_create failed: %d\n", ret);
  77           return 1;
  78         }
  79       else if (thr_ret)
  80         {
  81           printf ("thread getpid failed\n");
  82           return 1;
  83         }
  84
  85       return 0;
  86     }
  87
  88   int status;
  89   if (TEMP_FAILURE_RETRY (waitpid (child, &status, 0)) != child)
  90     {
  91       puts ("waitpid failed");
  92       kill (child, SIGKILL);
  93       return 1;
  94     }
  95
  96   if (!WIFEXITED (status))
  97     {
  98       if (WIFSIGNALED (status))
  99         printf ("died from signal %s\n", strsignal (WTERMSIG (status)));
 100       else
 101         puts ("did not terminate correctly");
 102       return 1;
 103     }
 104   if (WEXITSTATUS (status) != 0)
 105     {
 106       printf ("exit code %d\n", WEXITSTATUS (status));
 107       return 1;
 108     }
 109
 110   return 0;
 111 }
 112
 113 #define TEST_FUNCTION do_test ()
 114 #include "../test-skeleton.c"