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 #ifndef TEST_CLONE_FLAGS
   9 #define TEST_CLONE_FLAGS 0
  10 #endif
  11
  12 static int sig;
  13
  14 static int
  15 f (void *a)
  16 {
  17   puts ("in f");
  18   union sigval sival;
  19   sival.sival_int = getpid ();
  20   printf ("pid = %d\n", sival.sival_int);
  21   if (sigqueue (getppid (), sig, sival) != 0)
  22     return 1;
  23   return 0;
  24 }
  25
  26
  27 static int
  28 do_test (void)
  29 {
  30   int mypid = getpid ();
  31
  32   sig = SIGRTMIN;
  33   sigset_t ss;
  34   sigemptyset (&ss);
  35   sigaddset (&ss, sig);
  36   if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
  37     {
  38       printf ("sigprocmask failed: %m\n");
  39       return 1;
  40     }
  41
  42 #ifdef __ia64__
  43   extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
  44                        size_t __child_stack_size, int __flags,
  45                        void *__arg, ...);
  46   char st[256 * 1024];
  47   pid_t p = __clone2 (f, st, sizeof (st), TEST_CLONE_FLAGS, 0);
  48 #else
  49   char st[128 * 1024];
  50   pid_t p = clone (f, st + sizeof (st), TEST_CLONE_FLAGS, 0);
  51 #endif
  52   if (p == -1)
  53     {
  54       printf("clone failed: %m\n");
  55       return 1;
  56     }
  57   printf ("new thread: %d\n", (int) p);
  58
  59   siginfo_t si;
  60   do
  61     if (sigwaitinfo (&ss, &si) < 0)
  62       {
  63         printf("sigwaitinfo failed: %m\n");
  64         kill (p, SIGKILL);
  65         return 1;
  66       }
  67   while  (si.si_signo != sig || si.si_code != SI_QUEUE);
  68
  69   if (si.si_int != (int) p)
  70     {
  71       printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
  72       kill (p, SIGKILL);
  73       return 1;
  74     }
  75
  76   if (si.si_pid != p)
  77     {
  78       printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
  79       kill (p, SIGKILL);
  80       return 1;
  81     }
  82
  83   int e;
  84   if (waitpid (p, &e, __WCLONE) != p)
  85     {
  86       puts ("waitpid failed");
  87       kill (p, SIGKILL);
  88       return 1;
  89     }
  90   if (!WIFEXITED (e))
  91     {
  92       puts ("did not terminate correctly");
  93       return 1;
  94     }
  95   if (WEXITSTATUS (e) != 0)
  96     {
  97       printf ("exit code %d\n", WEXITSTATUS (e));
  98       return 1;
  99     }
 100
 101   if (getpid () != mypid)
 102     {
 103       puts ("my PID changed");
 104       return 1;
 105     }
 106
 107   return 0;
 108 }
 109
 110 #define TEST_FUNCTION do_test ()
 111 #include "../test-skeleton.c"