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glibc  2.9
Defines | Functions | Variables
tst-cancel21.c File Reference
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <unistd.h>
#include "../test-skeleton.c"
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Defines

#define TIMEOUT   40
#define TEST_FUNCTION   do_test ()

Functions

static void cl (void *arg)
static void __attribute__ ((noinline))
static void sh (int sig)
static void * tf (void *arg)
static int do_one_test (void)
static int do_test (void)

Variables

static int fd [4]
static pthread_barrier_t b
volatile int in_sh_body
unsigned long cleanups

Define Documentation

#define TEST_FUNCTION   do_test ()

Definition at line 293 of file tst-cancel21.c.

#define TIMEOUT   40

Definition at line 292 of file tst-cancel21.c.


Function Documentation

static void __attribute__ ( (noinline)  ) [static]

Definition at line 41 of file tst-cancel21.c.

{
  char c;

  pthread_cleanup_push (cl, (void *) 1L);

  in_sh_body = 1;
  if (read (fd[2], &c, 1) == 1)
    {
      puts ("read succeeded");
      exit (1);
    }

  pthread_cleanup_pop (0);
}

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static void cl ( void *  arg) [static]

Definition at line 35 of file tst-cancel21.c.

{
  cleanups = (cleanups << 4) | (long) arg;
}

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static int do_one_test ( void  ) [static]

Definition at line 163 of file tst-cancel21.c.

{
  in_sh_body = 0;

  pid_t pid = fork ();

  if (pid == -1)
    {
      printf ("fork failed: %m\n");
      return 1;
    }

  if (pid)
    {
      int status;
      if (waitpid (pid, &status, 0) < 0)
       {
         printf ("waitpid failed %m\n");
         return 1;
       }

      return !WIFEXITED (status) || WEXITSTATUS (status);
    }

  if (pthread_barrier_init (&b, NULL, 2) != 0)
    {
      puts ("barrier_init failed");
      exit (1);
    }

  cleanups = 0;
  if (pipe (fd) != 0 || pipe (fd + 2) != 0)
    {
      puts ("pipe failed");
      exit (1);
    }

  pthread_t th;
  if (pthread_create (&th, NULL, tf, (void *) pthread_self ()) != 0)
    {
      puts ("create failed");
      exit (1);
    }

  pthread_cleanup_push (cl, (void *) 4L);
  tf_body ();
  pthread_cleanup_pop (0);
  exit (1);
}

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static int do_test ( void  ) [static]

Definition at line 215 of file tst-cancel21.c.

{
  stack_t ss;
  ss.ss_sp = malloc (2 * SIGSTKSZ);
  if (ss.ss_sp == NULL)
    {
      puts ("failed to allocate alternate stack");
      return 1;
    }
  ss.ss_flags = 0;
  ss.ss_size = 2 * SIGSTKSZ;
  if (sigaltstack (&ss, NULL) < 0)
    {
      printf ("sigaltstack failed %m\n");
      return 1;
    }

  struct sigaction sa;
  sa.sa_handler = sh;
  sigemptyset (&sa.sa_mask);
  sa.sa_flags = 0;

  if (sigaction (SIGHUP, &sa, NULL) != 0)
    {
      puts ("sigaction failed");
      return 1;
    }

  puts ("sa_flags = 0 test");
  if (do_one_test ())
    return 1;

  sa.sa_handler = sh;
  sigemptyset (&sa.sa_mask);
  sa.sa_flags = SA_ONSTACK;

  if (sigaction (SIGHUP, &sa, NULL) != 0)
    {
      puts ("sigaction failed");
      return 1;
    }

  puts ("sa_flags = SA_ONSTACK test");
  if (do_one_test ())
    return 1;

  sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
  sigemptyset (&sa.sa_mask);
  sa.sa_flags = SA_SIGINFO;

  if (sigaction (SIGHUP, &sa, NULL) != 0)
    {
      puts ("sigaction failed");
      return 1;
    }

  puts ("sa_flags = SA_SIGINFO test");
  if (do_one_test ())
    return 1;

  sa.sa_sigaction = (void (*)(int, siginfo_t *, void *)) sh;
  sigemptyset (&sa.sa_mask);
  sa.sa_flags = SA_SIGINFO | SA_ONSTACK;

  if (sigaction (SIGHUP, &sa, NULL) != 0)
    {
      puts ("sigaction failed");
      return 1;
    }

  puts ("sa_flags = SA_SIGINFO|SA_ONSTACK test");
  if (do_one_test ())
    return 1;

  return 0;
}

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static void sh ( int  sig) [static]

Definition at line 60 of file tst-cancel21.c.

{
  pthread_cleanup_push (cl, (void *) 2L);
  sh_body ();
  in_sh_body = 0;

  pthread_cleanup_pop (0);
}

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static void* tf ( void *  arg) [static]

Definition at line 97 of file tst-cancel21.c.

{
  pthread_t th = (pthread_t) arg;

  int r = pthread_barrier_wait (&b);
  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
    {
      puts ("parent thread: barrier_wait failed");
      exit (1);
    }

  sleep (1);

  r = pthread_kill (th, SIGHUP);
  if (r)
    {
      errno = r;
      printf ("pthread_kill failed %m\n");
      exit (1);
    }

  while (in_sh_body == 0)
    sleep (1);

  if (pthread_cancel (th) != 0)
    {
      puts ("cancel failed");
      exit (1);
    }

  /* This will cause the read in the initial thread to return.  */
  close (fd[0]);
  close (fd[1]);
  close (fd[2]);
  close (fd[3]);

  void *ret;
  if (pthread_join (th, &ret) != 0)
    {
      puts ("join failed");
      exit (1);
    }

  if (ret != PTHREAD_CANCELED)
    {
      puts ("result is wrong");
      exit (1);
    }

  if (cleanups != 0x1234L)
    {
      printf ("called cleanups %lx\n", cleanups);
      exit (1);
    }

  if (pthread_barrier_destroy (&b))
    {
      puts ("barrier destroy failed");
      exit (1);
    }

  exit (0);
}

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Variable Documentation

pthread_barrier_t b [static]

Definition at line 30 of file tst-cancel21.c.

unsigned long cleanups

Definition at line 32 of file tst-cancel21.c.

int fd[4] [static]

Definition at line 29 of file tst-cancel21.c.

volatile int in_sh_body

Definition at line 31 of file tst-cancel21.c.