rt/tst-aio3.c

   1 /* Test for notification mechanism in lio_listio.
   2    Copyright (C) 2000,02 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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <aio.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25 #include <errno.h>
  26
  27 int flag;
  28
  29
  30 static void
  31 thrfct (sigval_t arg)
  32 {
  33   flag = 1;
  34 }
  35
  36
  37 static int
  38 do_test (int argc, char *argv[])
  39 {
  40   char name[] = "/tmp/aio3.XXXXXX";
  41   int fd;
  42   struct aiocb *arr[1];
  43   struct aiocb cb;
  44   static const char buf[] = "Hello World\n";
  45
  46   fd = mkstemp (name);
  47   if (fd == -1)
  48     {
  49       printf ("cannot open temp name: %m\n");
  50       return 1;
  51     }
  52
  53   unlink (name);
  54
  55   arr[0] = &cb;
  56
  57   cb.aio_fildes = fd;
  58   cb.aio_lio_opcode = LIO_WRITE;
  59   cb.aio_reqprio = 0;
  60   cb.aio_buf = (void *) buf;
  61   cb.aio_nbytes = sizeof (buf) - 1;
  62   cb.aio_offset = 0;
  63   cb.aio_sigevent.sigev_notify = SIGEV_THREAD;
  64   cb.aio_sigevent.sigev_notify_function = thrfct;
  65   cb.aio_sigevent.sigev_notify_attributes = NULL;
  66   cb.aio_sigevent.sigev_value.sival_ptr = NULL;
  67
  68   if (lio_listio (LIO_NOWAIT, arr, 1, NULL) < 0)
  69     {
  70       if (errno == ENOSYS)
  71         {
  72           puts ("no aio support in this configuration");
  73           return 0;
  74         }
  75       printf ("lio_listio failed: %m\n");
  76       return 1;
  77     }
  78
  79   if (aio_suspend ((const struct aiocb *const *) arr, 1, NULL) < 0)
  80     {
  81       printf ("aio_suspend failed: %m\n");
  82       return 1;
  83     }
  84
  85   if (flag != 0)
  86     {
  87       puts ("thread created, should not have happened");
  88       return 1;
  89     }
  90
  91   puts ("all OK");
  92
  93   return 0;
  94 }
  95
  96 #include "../test-skeleton.c"