1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * (c) UNIX System Laboratories, Inc. 7 * All or some portions of this file are derived from material licensed 8 * to the University of California by American Telephone and Telegraph 9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 10 * the permission of UNIX System Laboratories, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * @(#)callout.h 8.2 (Berkeley) 1/21/94 37 * $FreeBSD$ 38 */ 39 40 #ifndef _SYS__CALLOUT_H 41 #define _SYS__CALLOUT_H 42 43 #include <sys/queue.h> 44 45 struct lock_object; 46 47 LIST_HEAD(callout_list, callout); 48 SLIST_HEAD(callout_slist, callout); 49 TAILQ_HEAD(callout_tailq, callout); 50 51 typedef void callout_func_t(void *); 52 53 struct callout { 54 union { 55 LIST_ENTRY(callout) le; 56 SLIST_ENTRY(callout) sle; 57 TAILQ_ENTRY(callout) tqe; 58 } c_links; 59 sbintime_t c_time; /* ticks to the event */ 60 sbintime_t c_precision; /* delta allowed wrt opt */ 61 void *c_arg; /* function argument */ 62 callout_func_t *c_func; /* function to call */ 63 struct lock_object *c_lock; /* lock to handle */ 64 short c_flags; /* User State */ 65 short c_iflags; /* Internal State */ 66 volatile int c_cpu; /* CPU we're scheduled on */ 67 }; 68 69 #endif 70