research.m1stereo.tv/gitweb/ - melted/blob - src/valerie/valerie_notifier.h

   1 /*
   2  * valerie_notifier.h -- Unit Status Notifier Handling
   3  * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef _VALERIE_NOTIFIER_H_
  22 #define _VALERIE_NOTIFIER_H_
  23
  24 /* System header files */
  25 #include <pthread.h>
  26
  27 /* Application header files */
  28 #include "valerie_status.h"
  29
  30 #ifdef __cplusplus
  31 extern "C"
  32 {
  33 #endif
  34
  35 #define MAX_UNITS 16
  36
  37 /** Status notifier definition.
  38 */
  39
  40 typedef struct
  41 {
  42         pthread_mutex_t mutex;
  43         pthread_cond_t cond;
  44         valerie_status_t last;
  45         valerie_status_t store[ MAX_UNITS ];
  46 }
  47 *valerie_notifier, valerie_notifier_t;
  48
  49 extern valerie_notifier valerie_notifier_init( );
  50 extern void valerie_notifier_get( valerie_notifier, valerie_status, int );
  51 extern int valerie_notifier_wait( valerie_notifier, valerie_status );
  52 extern void valerie_notifier_put( valerie_notifier, valerie_status );
  53 extern void valerie_notifier_disconnected( valerie_notifier );
  54 extern void valerie_notifier_close( valerie_notifier );
  55
  56 #ifdef __cplusplus
  57 }
  58 #endif
  59
  60 #endif