transmission/libtransmission/publish.c

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/*
* This file Copyright (C) 2007 Charles Kerr <charles@rebelbase.com>
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
2007-08-18 17:19:49 +00:00
* $Id$
*/
#include <assert.h>
#include "list.h"
#include "publish.h"
#include "utils.h"
struct tr_publisher_node
{
tr_delivery_func * func;
void * user_data;
};
struct tr_publisher_s
{
tr_list * list;
};
tr_publisher_t*
tr_publisherNew( void )
{
return tr_new0( tr_publisher_t, 1 );
}
void
tr_publisherFree( tr_publisher_t ** p )
{
assert( p != NULL );
assert( *p != NULL );
tr_list_free( &(*p)->list, NULL );
tr_free( *p );
*p = NULL;
}
tr_publisher_tag
tr_publisherSubscribe ( tr_publisher_t * p,
tr_delivery_func func,
void * user_data )
{
struct tr_publisher_node * node = tr_new( struct tr_publisher_node, 1 );
node->func = func;
node->user_data = user_data;
tr_list_append( &p->list, node );
return node;
}
void
tr_publisherUnsubscribe( tr_publisher_t * p,
tr_publisher_tag tag )
{
tr_list_remove_data( &p->list, tag );
tr_free( tag );
}
void
tr_publisherPublish( tr_publisher_t * p,
void * source,
void * event )
{
tr_list * walk;
for( walk=p->list; walk!=NULL; )
{
tr_list * next = walk->next;
struct tr_publisher_node * node = (struct tr_publisher_node*)walk->data;
(node->func)(source, event, node->user_data);
walk = next;
}
}