rt/tst-aio6.c

   1 /* Test for timeout handling.
   2    Copyright (C) 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <aio.h>
  21 #include <errno.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24 #include <sys/time.h>
  25
  26
  27 /* We expect to wait for 3 seconds so we have to increase the timeout.  */
  28 #define TIMEOUT 10 /* sec */
  29
  30
  31 #define TEST_FUNCTION do_test ()
  32 static int
  33 do_test (void)
  34 {
  35   struct aiocb *arr[1];
  36   struct aiocb cb;
  37   char buf[100];
  38   struct timeval before;
  39   struct timeval after;
  40   struct timespec timeout;
  41   int fd[2];
  42   int result = 0;
  43
  44   if (pipe (fd) != 0)
  45     {
  46       printf ("cannot create pipe: %m\n");
  47       return 1;
  48     }
  49
  50   arr[0] = &cb;
  51
  52   cb.aio_fildes = fd[0];
  53   cb.aio_lio_opcode = LIO_WRITE;
  54   cb.aio_reqprio = 0;
  55   cb.aio_buf = (void *) buf;
  56   cb.aio_nbytes = sizeof (buf) - 1;
  57   cb.aio_sigevent.sigev_notify = SIGEV_NONE;
  58
  59   /* Try to read from stdin where nothing will be available.  */
  60   if (aio_read (arr[0]) < 0)
  61     {
  62       printf ("aio_read failed: %m\n");
  63       return 1;
  64     }
  65
  66   /* Get the current time.  */
  67   gettimeofday (&before, NULL);
  68
  69   /* Wait for input which is unsuccess and therefore the function will
  70      time out.  */
  71   timeout.tv_sec = 3;
  72   timeout.tv_nsec = 0;
  73   if (aio_suspend ((const struct aiocb *const*) arr, 1, &timeout) != -1)
  74     {
  75       puts ("aio_suspend() didn't return -1");
  76       result = 1;
  77     }
  78   else if (errno != EAGAIN)
  79     {
  80       puts ("error not set to EAGAIN");
  81       result = 1;
  82     }
  83   else
  84     {
  85       gettimeofday (&after, NULL);
  86       if (after.tv_sec < before.tv_sec + 1)
  87         {
  88           puts ("timeout came too early");
  89           result = 1;
  90         }
  91     }
  92
  93   return result;
  94 }
  95
  96 #include "../test-skeleton.c"