Attachment 311664 Details for Bug 455179 – Testcase.

Testcase.

exitcrash.c (text/plain), 2.81 KB, created by Jan Kratochvil on 2008-07-13 14:37:45 UTC

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Creator: Jan Kratochvil

Created: 2008-07-13 14:37:45 UTC

Size: 2.81 KB

patch

obsolete

>#define _GNU_SOURCE
>/* This software is provided 'as-is', without any express or implied
>   warranty.  In no event will the authors be held liable for any damages
>   arising from the use of this software.
>   
>   Permission is granted to anyone to use this software for any purpose,
>   including commercial applications, and to alter it and redistribute it
>   freely.  */
>
>#include <stdio.h>
>#include <unistd.h>
>#include <pthread.h>
>#include <signal.h>
>#include <stdlib.h>
>#include <string.h>
>#include <assert.h>
>#include <errno.h>
>#include <sys/wait.h>
>#include <sys/ptrace.h>
>
>/* WARNING: The real testing count is probably unbound.  */
>#define DEFAULT_TESTTIME 10	/* seconds */
>
>#define FORKS 16
>
>static volatile pid_t forks[FORKS];
>
>static void
>cleanup (void)
>{
>  int forki;
>
>  for (forki = 0; forki < FORKS; forki++)
>    if (forks[forki] > 0)
>      kill (forks[forki], SIGKILL);
>}
>
>static void
>handler_fail (int signo)
>{
>  cleanup ();
>
>  signal (signo, SIG_DFL);
>  raise (signo);
>}
>
>static void *
>thread_func (void *argv0_pointer)
>{
>  execl ("/proc/self/exe", argv0_pointer, "child", NULL);
>  assert_perror (errno);
>  assert (0);
>  /* NOTREACHED */
>}
>
>static void
>child (const char *argv0)
>{
>  pthread_t thread;
>  int i;
>
>  errno = 0;
>  i = pthread_create (&thread, NULL, thread_func, (void *) argv0);
>  assert_perror (errno);
>  assert (i == 0);
>
>  while (1)
>    pause();
>  /* NOTREACHED */
>  assert (0);
>}
>
>static void
>kill_safe (pid_t pid)
>{
>  pid_t got;
>  int status;
>
>  do
>    {
>      int i;
>
>      errno = 0;
>      i = kill (pid, SIGKILL);
>      if (errno == ESRCH)
>	{
>	  /* It may happen even during the first cycle as the process still may
>	     not be initialized.  Wait till it appears in such case.  */
>	  assert (i == -1);
>	}
>      else
>	{
>	  assert_perror (errno);
>	  assert (i == 0);
>	}
>
>      errno = 0;
>      got = waitpid (pid, &status, WNOHANG);
>      assert_perror (errno);
>    }
>  while (got == 0);
>  assert (got == pid);
>  assert (WIFSIGNALED (status));
>  assert (WTERMSIG (status) == SIGKILL);
>}
>
>int
>main (int argc, char **argv)
>{
>  char *testtime = getenv ("TESTTIME");
>  time_t testend = time (NULL) + (testtime != NULL ? atoi (testtime)
>               : DEFAULT_TESTTIME);
>
>  atexit (cleanup);
>  signal (SIGABRT, handler_fail);
>  signal (SIGINT, handler_fail);
>  signal (SIGALRM, handler_fail);
>  alarm (10);
>
>  if ((argc == 2 && strcmp (argv[1], "child") == 0))
>    {
>      child (argv[0]);
>      /* NOTREACHED */
>      assert (0);
>    }
>
>  do
>    {
>      int forki;
>
>      for (forki = 0; forki < FORKS; forki++)
>	{
>	  alarm (10);
>
>	  if (forks[forki] > 0)
>	    kill_safe (forks[forki]);
>
>	  forks[forki] = fork ();
>	  switch (forks[forki])
>	    {
>	      case -1:
>		assert_perror (errno);
>	      case 0:
>		child (argv[0]);
>		/* NOTREACHED */
>		assert (0);
>	      default:
>		break;
>	    }
>
>	}
>    }
>  while (time (NULL) < testend);
>
>  return 0;
>}

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