11541Srgrimes/*- 21541Srgrimes * Copyright (c) 1992, 1993 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 4. Neither the name of the University nor the names of its contributors 141541Srgrimes * may be used to endorse or promote products derived from this software 151541Srgrimes * without specific prior written permission. 161541Srgrimes * 171541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271541Srgrimes * SUCH DAMAGE. 281541Srgrimes * 291541Srgrimes * @(#)select.h 8.2 (Berkeley) 1/4/94 3050477Speter * $FreeBSD$ 311541Srgrimes */ 321541Srgrimes 3370650Swollman#ifndef _SYS_SELINFO_H_ 3470650Swollman#define _SYS_SELINFO_H_ 351541Srgrimes 3692407Sbde#include <sys/event.h> /* for struct klist */ 3759288Sjlemon 38174647Sjeffstruct selfd; 39174647SjeffTAILQ_HEAD(selfdlist, selfd); 40174647Sjeff 411541Srgrimes/* 421541Srgrimes * Used to maintain information about processes that wish to be 431541Srgrimes * notified when I/O becomes possible. 441541Srgrimes */ 451541Srgrimesstruct selinfo { 46174647Sjeff struct selfdlist si_tdlist; /* List of sleeping threads. */ 47174647Sjeff struct knlist si_note; /* kernel note list */ 48174647Sjeff struct mtx *si_mtx; /* Lock for tdlist. */ 491541Srgrimes}; 501541Srgrimes 51174647Sjeff#define SEL_WAITING(si) (!TAILQ_EMPTY(&(si)->si_tdlist)) 5292252Salfred 5364326Sgreen#ifdef _KERNEL 54225177Sattiliovoid seldrain(struct selinfo *sip); 5592719Salfredvoid selrecord(struct thread *selector, struct selinfo *sip); 5692719Salfredvoid selwakeup(struct selinfo *sip); 57122352Stanimuravoid selwakeuppri(struct selinfo *sip, int pri); 58174647Sjeffvoid seltdfini(struct thread *td); 591541Srgrimes#endif 601541Srgrimes 6170650Swollman#endif /* !_SYS_SELINFO_H_ */ 62