1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1998 by Sun Microsystems, Inc. 24*0Sstevel@tonic-gate * All rights reserved. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #ifndef _SYS_DEVPOLL_H 28*0Sstevel@tonic-gate #define _SYS_DEVPOLL_H 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate #include <sys/poll_impl.h> 33*0Sstevel@tonic-gate #include <sys/types32.h> 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #ifdef __cplusplus 36*0Sstevel@tonic-gate extern "C" { 37*0Sstevel@tonic-gate #endif 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate /* /dev/poll ioctl */ 41*0Sstevel@tonic-gate #define DPIOC (0xD0 << 8) 42*0Sstevel@tonic-gate #define DP_POLL (DPIOC | 1) /* poll on fds in cached in /dev/poll */ 43*0Sstevel@tonic-gate #define DP_ISPOLLED (DPIOC | 2) /* is this fd cached in /dev/poll */ 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #define DEVPOLLSIZE 1000 /* /dev/poll table size increment */ 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate /* 48*0Sstevel@tonic-gate * /dev/poll DP_POLL ioctl format 49*0Sstevel@tonic-gate */ 50*0Sstevel@tonic-gate typedef struct dvpoll { 51*0Sstevel@tonic-gate pollfd_t *dp_fds; /* pollfd array */ 52*0Sstevel@tonic-gate nfds_t dp_nfds; /* num of pollfd's in dp_fds[] */ 53*0Sstevel@tonic-gate int dp_timeout; /* time out in milisec */ 54*0Sstevel@tonic-gate } dvpoll_t; 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate typedef struct dvpoll32 { 57*0Sstevel@tonic-gate caddr32_t dp_fds; /* pollfd array */ 58*0Sstevel@tonic-gate uint32_t dp_nfds; /* num of pollfd's in dp_fds[] */ 59*0Sstevel@tonic-gate int32_t dp_timeout; /* time out in milisec */ 60*0Sstevel@tonic-gate } dvpoll32_t; 61*0Sstevel@tonic-gate 62*0Sstevel@tonic-gate #ifdef _KERNEL 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate typedef struct dp_entry { 65*0Sstevel@tonic-gate kmutex_t dpe_lock; /* protect a devpoll entry */ 66*0Sstevel@tonic-gate pollcache_t *dpe_pcache; /* a ptr to pollcache */ 67*0Sstevel@tonic-gate int dpe_refcnt; /* no. of ioctl lwp on the dpe */ 68*0Sstevel@tonic-gate int dpe_writerwait; /* no. of waits on write */ 69*0Sstevel@tonic-gate int dpe_flag; /* see below */ 70*0Sstevel@tonic-gate kcondvar_t dpe_cv; 71*0Sstevel@tonic-gate } dp_entry_t; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate #define DP_WRITER_PRESENT 0x1 /* a write is in progress */ 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate #define DP_REFRELE(dpep) { \ 76*0Sstevel@tonic-gate mutex_enter(&(dpep)->dpe_lock); \ 77*0Sstevel@tonic-gate ASSERT((dpep)->dpe_refcnt > 0); \ 78*0Sstevel@tonic-gate (dpep)->dpe_refcnt--; \ 79*0Sstevel@tonic-gate if ((dpep)->dpe_refcnt == 0) { \ 80*0Sstevel@tonic-gate cv_broadcast(&(dpep)->dpe_cv); \ 81*0Sstevel@tonic-gate } \ 82*0Sstevel@tonic-gate mutex_exit(&(dpep)->dpe_lock); \ 83*0Sstevel@tonic-gate } 84*0Sstevel@tonic-gate #endif /* _KERNEL */ 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate #ifdef __cplusplus 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate #endif 89*0Sstevel@tonic-gate 90*0Sstevel@tonic-gate #endif /* _SYS_DEVPOLL_H */ 91