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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * xsem.h: to provide a semaphore system (used by the smq routines) 38 * 39 * these routines come from the libxposix library. 40 */ 41 42 #include <pthread.h> 43 #include <time.h> 44 45 46 /* DEFINES */ 47 #define XSEM_ERROR -1 48 #define XSEM_EBUSY 1 49 #define XSEM_ETIME 2 50 51 52 /* STRUCTURES */ 53 typedef struct 54 { 55 pthread_mutex_t semMutex; 56 pthread_cond_t semCV; 57 int semaphore; 58 } xsem_t; 59 60 61 /* PROTOTYPES */ 62 int xsem_init(xsem_t *sem, int pshared, unsigned int value); 63 void xsem_destroy(xsem_t *sem); 64 int xsem_wait(xsem_t *sem); 65 int xsem_trywait(xsem_t *sem); 66 int xsem_post(xsem_t *sem); 67 void xsem_getvalue(xsem_t *sem, int *sval); 68 69 int xsem_xwait(xsem_t *sem, int timeout, timestruc_t *time); 70 71 #ifdef __cplusplus 72 } 73 #endif 74 75 #endif /* __XSEM_H__ */ 76