rt/tst-aio5.c

   1 /* Test for completion thread handling.
   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 /* We might need a bit longer timeout.  */
  28 #define TIMEOUT 10 /* sec */
  29
  30 #define MY_SIVAL 27
  31
  32 volatile sig_atomic_t flag;
  33
  34
  35 static void
  36 callback (sigval_t s)
  37 {
  38   flag = s.sival_int;
  39 }
  40
  41 static int
  42 wait_flag (void)
  43 {
  44   while (flag == 0)
  45     {
  46       puts ("Sleeping...");
  47       sleep (1);
  48     }
  49
  50   if (flag != MY_SIVAL)
  51     {
  52       printf ("signal handler received wrong signal, flag is %d\n", flag);
  53       return 1;
  54     }
  55
  56   return 0;
  57 }
  58
  59
  60 static int
  61 do_test (int argc, char *argv[])
  62 {
  63   char name[] = "/tmp/aio5.XXXXXX";
  64   int fd;
  65   struct aiocb *arr[1];
  66   struct aiocb cb;
  67   static const char buf[] = "Hello World\n";
  68   struct sigevent ev;
  69
  70   fd = mkstemp (name);
  71   if (fd == -1)
  72     {
  73       printf ("cannot open temp name: %m\n");
  74       return 1;
  75     }
  76
  77   unlink (name);
  78
  79   arr[0] = &cb;
  80
  81   cb.aio_fildes = fd;
  82   cb.aio_lio_opcode = LIO_WRITE;
  83   cb.aio_reqprio = 0;
  84   cb.aio_buf = (void *) buf;
  85   cb.aio_nbytes = sizeof (buf) - 1;
  86   cb.aio_offset = 0;
  87   cb.aio_sigevent.sigev_notify = SIGEV_THREAD;
  88   cb.aio_sigevent.sigev_notify_function = callback;
  89   cb.aio_sigevent.sigev_notify_attributes = NULL;
  90   cb.aio_sigevent.sigev_value.sival_int = MY_SIVAL;
  91
  92   ev.sigev_notify = SIGEV_THREAD;
  93   ev.sigev_notify_function = callback;
  94   ev.sigev_notify_attributes = NULL;
  95   ev.sigev_value.sival_int = MY_SIVAL;
  96
  97   /* First use aio_write.  */
  98   if (aio_write (arr[0]) < 0)
  99     {
 100       if (errno == ENOSYS)
 101         {
 102           puts ("no aio support in this configuration");
 103           return 0;
 104         }
 105       printf ("aio_write failed: %m\n");
 106       return 1;
 107     }
 108
 109   if (wait_flag ())
 110     return 1;
 111
 112   puts ("aio_write OK");
 113
 114   flag = 0;
 115   /* Again with lio_listio.  */
 116   if (lio_listio (LIO_NOWAIT, arr, 1, &ev) < 0)
 117     {
 118       printf ("lio_listio failed: %m\n");
 119       return 1;
 120     }
 121
 122   if (wait_flag ())
 123     return 1;
 124
 125   puts ("all OK");
 126
 127   return 0;
 128 }
 129
 130 #include "../test-skeleton.c"