lib/events_libevent.c


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generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 01:35:01 +0000
 

 class="w"> 1 );
		b_ev->id = id_next++;
		b_ev->function = function;
		b_ev->data = data;
		
		out_cond = EV_PERSIST;
		if( condition & B_EV_IO_READ )
			out_cond |= EV_READ;
		if( condition & B_EV_IO_WRITE )
			out_cond |= EV_WRITE;
		
		event_set( &b_ev->evinfo, fd, out_cond, b_event_passthrough, b_ev );
		event_add( &b_ev->evinfo, NULL );
		
		if( out_cond & EV_READ )
			g_hash_table_insert( read_hash, &b_ev->evinfo.ev_fd, b_ev );
		if( out_cond & EV_WRITE )
			g_hash_table_insert( write_hash, &b_ev->evinfo.ev_fd, b_ev );
	}
	
	b_ev->flags = condition;
	g_hash_table_insert( id_hash, &b_ev->id, b_ev );
	return b_ev->id;
}

/* TODO: Persistence for timers! */
gint b_timeout_add( gint timeout, b_event_handler function, gpointer data )
{
	struct b_event_data *b_ev = g_new0( struct b_event_data, 1 );
	struct timeval tv;
	
	b_ev->id = id_next++;
	b_ev->timeout = timeout;
	b_ev->function = function;
	b_ev->data = data;
	
	tv.tv_sec = timeout / 1000;
	tv.tv_usec = ( timeout % 1000 ) * 1000;
	
	evtimer_set( &b_ev->evinfo, b_event_passthrough, b_ev );
	evtimer_add( &b_ev->evinfo, &tv );
	
	event_debug( "b_timeout_add( %d, 0x%x, 0x%x ) = %d\n", timeout, function, data, b_ev->id );
	
	g_hash_table_insert( id_hash, &b_ev->id, b_ev );
	
	return b_ev->id;
}

void b_event_remove( gint id )
{
	struct b_event_data *b_ev = g_hash_table_lookup( id_hash, &id );
	
	event_debug( "b_event_remove( %d )\n", id );
	if( b_ev )
	{
		if( id == id_cur )
			id_dead = TRUE;
		
		g_hash_table_remove( id_hash, &b_ev->id );
		if( b_ev->evinfo.ev_fd >= 0 )
		{
			if( b_ev->evinfo.ev_events & EV_READ )
				g_hash_table_remove( read_hash, &b_ev->evinfo.ev_fd );
			if( b_ev->evinfo.ev_events & EV_WRITE )
				g_hash_table_remove( write_hash, &b_ev->evinfo.ev_fd );
		}
		
		event_del( &b_ev->evinfo );
		g_free( b_ev );
	}
	else
	{
		event_debug( "Already removed?\n" );
	}
}

void closesocket( int fd )
{
	struct b_event_data *b_ev;
	
	/* Since epoll() (the main reason we use libevent) automatically removes sockets from
	   the epoll() list when a socket gets closed and some modules have a habit of
	   closing sockets before removing event handlers, our and libevent's administration
	   get a little bit messed up. So this little function will remove the handlers
	   properly before closing a socket. */
	
	if( ( b_ev = g_hash_table_lookup( read_hash, &fd ) ) )
	{
		event_debug( "Warning: fd %d still had a read event handler when shutting down.\n", fd );
		b_event_remove( b_ev->id );
	}
	if( ( b_ev = g_hash_table_lookup( write_hash, &fd ) ) )
	{
		event_debug( "Warning: fd %d still had a write event handler when shutting down.\n", fd );
		b_event_remove( b_ev->id );
	}
	
	close( fd );
}