transmission/libtransmission/publish.c

70 lines
1.6 KiB
C

/*
* This file Copyright (C) 2007-2010 Mnemosyne LLC
*
* 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.
*
* $Id$
*/
#include <assert.h>
#include "list.h"
#include "publish.h"
#include "utils.h"
struct tr_publisher_node
{
tr_delivery_func * func;
void * user_data;
};
const tr_publisher TR_PUBLISHER_INIT = { NULL };
void
tr_publisherDestruct( tr_publisher * p )
{
tr_list_free( &p->list, NULL );
}
tr_publisher_tag
tr_publisherSubscribe( tr_publisher * 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 * p,
tr_publisher_tag tag )
{
tr_list_remove_data( &p->list, tag );
tr_free( tag );
}
void
tr_publisherPublish( tr_publisher * 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;
}
}