1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef __XSEM_H__ 28 #define __XSEM_H__ 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 /* 35 * xsem.h: to provide a semaphore system (used by the smq routines) 36 * 37 * these routines come from the libxposix library. 38 */ 39 40 #include <pthread.h> 41 #include <time.h> 42 43 44 /* DEFINES */ 45 #define XSEM_ERROR -1 46 #define XSEM_EBUSY 1 47 #define XSEM_ETIME 2 48 49 50 /* STRUCTURES */ 51 typedef struct 52 { 53 pthread_mutex_t semMutex; 54 pthread_cond_t semCV; 55 int semaphore; 56 } xsem_t; 57 58 59 /* PROTOTYPES */ 60 int xsem_init(xsem_t *sem, int pshared, unsigned int value); 61 void xsem_destroy(xsem_t *sem); 62 int xsem_wait(xsem_t *sem); 63 int xsem_trywait(xsem_t *sem); 64 int xsem_post(xsem_t *sem); 65 void xsem_getvalue(xsem_t *sem, int *sval); 66 67 int xsem_xwait(xsem_t *sem, int timeout, timestruc_t *time); 68 69 #ifdef __cplusplus 70 } 71 #endif 72 73 #endif /* __XSEM_H__ */ 74