/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights * Reserved. This file contains Original Code and/or Modifications of * Original Code as defined in and that are subject to the Apple Public * Source License Version 1.0 (the 'License'). You may not use this file * except in compliance with the License. Please obtain a copy of the * License at http://www.apple.com/publicsource and read it before using * this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License." * * @APPLE_LICENSE_HEADER_END@ */ /* * Event handling * Copyright (C) 1989 by NeXT, Inc. * * Simple-minded event handling. Just writes things to a pipe and expects * to be called back by the main loop when it detects data ready on the * pipe (select() is king). */ #include <NetInfo/config.h> #include <netinfo/ni.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "event.h" #include <NetInfo/socket_lock.h> int event_pipe[2] = { -1, -1 }; static void (*event_callback)(void); /* * Handle an event */ void event_handle( void ) { char c; /* * Clear event */ read(event_pipe[0], &c, sizeof(c)); /* * And callback */ (*event_callback)(); } /* * Post an event */ void event_post( void ) { char c; c = 'x'; /* not really necessary */ write(event_pipe[1], &c, sizeof(c)); fsync(event_pipe[1]); } /* * Initialize things */ void event_init( void (*callback)(void) ) { if (event_pipe[0] < 0) { socket_lock(); pipe(event_pipe); socket_unlock(); } event_callback = callback; }