+++ /dev/null
-/*
- * valerie_notifier.c -- Unit Status Notifier Handling
- * Copyright (C) 2002-2003 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-/* System header files */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <sys/time.h>
-
-/* Application header files */
-#include "valerie_notifier.h"
-
-/** Notifier initialisation.
-*/
-
-valerie_notifier valerie_notifier_init( )
-{
- valerie_notifier this = calloc( 1, sizeof( valerie_notifier_t ) );
- if ( this != NULL )
- {
- int index = 0;
- pthread_mutex_init( &this->mutex, NULL );
- pthread_cond_init( &this->cond, NULL );
- for ( index = 0; index < MAX_UNITS; index ++ )
- this->store[ index ].unit = index;
- }
- return this;
-}
-
-/** Get a stored status for the specified unit.
-*/
-
-void valerie_notifier_get( valerie_notifier this, valerie_status status, int unit )
-{
- pthread_mutex_lock( &this->mutex );
- if ( unit >= 0 && unit < MAX_UNITS )
- valerie_status_copy( status, &this->store[ unit ] );
- else
- memset( status, 0, sizeof( valerie_status_t ) );
- status->unit = unit;
- status->dummy = time( NULL );
- pthread_mutex_unlock( &this->mutex );
-}
-
-/** Wait on a new status.
-*/
-
-int valerie_notifier_wait( valerie_notifier this, valerie_status status )
-{
- struct timeval now;
- struct timespec timeout;
- int error = 0;
-
- memset( status, 0, sizeof( valerie_status_t ) );
- gettimeofday( &now, NULL );
- timeout.tv_sec = now.tv_sec + 1;
- timeout.tv_nsec = now.tv_usec * 1000;
- pthread_mutex_lock( &this->mutex );
- pthread_cond_timedwait( &this->cond, &this->mutex, &timeout );
- valerie_status_copy( status, &this->last );
- pthread_mutex_unlock( &this->mutex );
-
- return error;
-}
-
-/** Put a new status.
-*/
-
-void valerie_notifier_put( valerie_notifier this, valerie_status status )
-{
- pthread_mutex_lock( &this->mutex );
- valerie_status_copy( &this->store[ status->unit ], status );
- valerie_status_copy( &this->last, status );
- pthread_mutex_unlock( &this->mutex );
- pthread_cond_broadcast( &this->cond );
-}
-
-/** Communicate a disconnected status for all units to all waiting.
-*/
-
-void valerie_notifier_disconnected( valerie_notifier notifier )
-{
- int unit = 0;
- valerie_status_t status;
- for ( unit = 0; unit < MAX_UNITS; unit ++ )
- {
- valerie_notifier_get( notifier, &status, unit );
- status.status = unit_disconnected;
- valerie_notifier_put( notifier, &status );
- }
-}
-
-/** Close the notifier - note that all access must be stopped before we call this.
-*/
-
-void valerie_notifier_close( valerie_notifier this )
-{
- if ( this != NULL )
- {
- pthread_mutex_destroy( &this->mutex );
- pthread_cond_destroy( &this->cond );
- free( this );
- }
-}