rt/tst-aio4.c

   1 /* Test for completion signal 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 <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <unistd.h>
  25
  26 /* We might need a bit longer timeout.  */
  27 #define TIMEOUT 10 /* sec */
  28
  29 #define MY_SIGNO (SIGRTMIN + 11)
  30
  31 volatile sig_atomic_t flag;
  32
  33
  34 static void
  35 sighandler (const int signo)
  36 {
  37   flag = signo;
  38 }
  39
  40 static int
  41 wait_flag (void)
  42 {
  43   while (flag == 0)
  44     {
  45       puts ("Sleeping...");
  46       sleep (1);
  47     }
  48
  49   if (flag != MY_SIGNO)
  50     {
  51       printf ("signal handler received wrong signal, flag is %d\n", flag);
  52       return 1;
  53     }
  54
  55   return 0;
  56 }
  57
  58
  59 static int
  60 do_test (int argc, char *argv[])
  61 {
  62   char name[] = "/tmp/aio4.XXXXXX";
  63   int fd;
  64   struct aiocb *arr[1];
  65   struct aiocb cb;
  66   static const char buf[] = "Hello World\n";
  67   struct aioinit init = {10, 20, 0};
  68   struct sigaction sa;
  69   struct sigevent ev;
  70
  71   fd = mkstemp (name);
  72   if (fd == -1)
  73     {
  74       printf ("cannot open temp name: %m\n");
  75       return 1;
  76     }
  77
  78   unlink (name);
  79
  80   /* Test also aio_init.  */
  81   aio_init (&init);
  82
  83   arr[0] = &cb;
  84
  85   cb.aio_fildes = fd;
  86   cb.aio_lio_opcode = LIO_WRITE;
  87   cb.aio_reqprio = 0;
  88   cb.aio_buf = (void *) buf;
  89   cb.aio_nbytes = sizeof (buf) - 1;
  90   cb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;
  91   cb.aio_sigevent.sigev_notify_function = NULL;
  92   cb.aio_sigevent.sigev_notify_attributes = NULL;
  93   cb.aio_sigevent.sigev_signo = MY_SIGNO;
  94   cb.aio_sigevent.sigev_value.sival_ptr = NULL;
  95
  96   ev.sigev_notify = SIGEV_SIGNAL;
  97   ev.sigev_notify_function = NULL;
  98   ev.sigev_notify_attributes = NULL;
  99   ev.sigev_signo = MY_SIGNO;
 100
 101   sa.sa_handler = sighandler;
 102   sigemptyset (&sa.sa_mask);
 103   sa.sa_flags = SA_RESTART;
 104
 105   if (sigaction (MY_SIGNO, &sa, NULL) < 0)
 106     {
 107       printf ("sigaction failed: %m\n");
 108       return 1;
 109     }
 110
 111   flag = 0;
 112   /* First use aio_write.  */
 113   if (aio_write (arr[0]) < 0)
 114     {
 115       printf ("aio_write failed: %m\n");
 116       return 1;
 117     }
 118
 119   if (wait_flag ())
 120     return 1;
 121
 122   puts ("aio_write OK");
 123
 124   flag = 0;
 125   /* Again with lio_listio.  */
 126   if (lio_listio (LIO_NOWAIT, arr, 1, &ev) < 0)
 127     {
 128       printf ("lio_listio failed: %m\n");
 129       return 1;
 130     }
 131
 132   if (wait_flag ())
 133     return 1;
 134
 135   puts ("all OK");
 136
 137   return 0;
 138 }
 139
 140 #include "../test-skeleton.c"