nptl/tst-getpid1.c

   1 #include <sched.h>
   2 #include <signal.h>
   3 #include <stdio.h>
   4 #include <unistd.h>
   5 #include <sys/types.h>
   6 #include <sys/wait.h>
   7
   8 static int sig;
   9
  10 static int
  11 f (void *a)
  12 {
  13   puts ("in f");
  14   union sigval sival;
  15   sival.sival_int = getpid ();
  16   printf ("pid = %d\n", sival.sival_int);
  17   if (sigqueue (getppid (), sig, sival) != 0)
  18     return 1;
  19   return 0;
  20 }
  21
  22
  23 static int
  24 do_test (void)
  25 {
  26   int mypid = getpid ();
  27
  28   sig = SIGRTMIN;
  29   sigset_t ss;
  30   sigemptyset (&ss);
  31   sigaddset (&ss, sig);
  32   if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
  33     {
  34       printf ("sigprocmask failed: %m\n");
  35       return 1;
  36     }
  37
  38   char st[128 * 1024];
  39   pid_t p = clone (f, st + sizeof (st), 0, 0);
  40   if (p == -1)
  41     {
  42       printf("clone failed: %m\n");
  43       return 1;
  44     }
  45   printf ("new thread: %d\n", (int) p);
  46
  47   siginfo_t si;
  48   do
  49     if (sigwaitinfo (&ss, &si) < 0)
  50       {
  51         printf("sigwaitinfo failed: %m\n");
  52         kill (p, SIGKILL);
  53         return 1;
  54       }
  55   while  (si.si_signo != sig || si.si_code != SI_QUEUE);
  56
  57   if (si.si_int != (int) p)
  58     {
  59       printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
  60       kill (p, SIGKILL);
  61       return 1;
  62     }
  63
  64   if (si.si_pid != p)
  65     {
  66       printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
  67       kill (p, SIGKILL);
  68       return 1;
  69     }
  70
  71   int e;
  72   if (waitpid (p, &e, __WCLONE) != p)
  73     {
  74       puts ("waitpid failed");
  75       kill (p, SIGKILL);
  76       return 1;
  77     }
  78   if (!WIFEXITED (e))
  79     {
  80       puts ("did not terminate correctly");
  81       return 1;
  82     }
  83   if (WEXITSTATUS (e) != 0)
  84     {
  85       printf ("exit code %d\n", WEXITSTATUS (e));
  86       return 1;
  87     }
  88
  89   if (getpid () != mypid)
  90     {
  91       puts ("my PID changed");
  92       return 1;
  93     }
  94
  95   return 0;
  96 }
  97
  98 #define TEST_FUNCTION do_test ()
  99 #include "../test-skeleton.c"