00001 /* 00002 * Copyright (C) 2001-2004 Jakub Jermar 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * - Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * - The name of the author may not be used to endorse or promote products 00015 * derived from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 00018 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00019 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 00020 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 00021 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00022 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00023 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00024 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00025 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 00026 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00027 */ 00028 00035 #ifndef __TIMEOUT_H__ 00036 #define __TIMEOUT_H__ 00037 00038 #include <arch/types.h> 00039 #include <typedefs.h> 00040 #include <synch/spinlock.h> 00041 #include <adt/list.h> 00042 00043 #define us2ticks(us) ((__u64)(((__u32) (us)/(1000000/HZ)))) 00044 00045 typedef void (* timeout_handler_t)(void *arg); 00046 00047 struct timeout { 00048 SPINLOCK_DECLARE(lock); 00049 00050 link_t link; 00052 __u64 ticks; 00054 timeout_handler_t handler; 00055 void *arg; 00057 cpu_t *cpu; 00058 }; 00059 00060 extern void timeout_init(void); 00061 extern void timeout_initialize(timeout_t *t); 00062 extern void timeout_reinitialize(timeout_t *t); 00063 extern void timeout_register(timeout_t *t, __u64 usec, timeout_handler_t f, void *arg); 00064 extern bool timeout_unregister(timeout_t *t); 00065 00066 #endif 00067