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 (c) 1993-1998 by Sun Microsystems, Inc. 24 * All rights reserved. 25 */ 26 27 #ifndef _SYS_SEMAPHORE_H 28 #define _SYS_SEMAPHORE_H 29 30 /* 31 * Public interface to semaphores. See semaphore(9F) for details. 32 */ 33 34 #ifndef _ASM 35 36 #ifdef _KERNEL 37 #include <sys/thread.h> 38 #endif 39 40 #ifdef __cplusplus 41 extern "C" { 42 #endif 43 44 typedef enum { 45 SEMA_DEFAULT, 46 SEMA_DRIVER 47 } ksema_type_t; 48 49 typedef struct _ksema { 50 void * _opaque[2]; /* 2 words on 4 byte alignment */ 51 } ksema_t; 52 53 #if defined(_KERNEL) 54 55 #define SEMA_HELD(x) (sema_held((x))) 56 57 extern void sema_init(ksema_t *, uint32_t, char *, ksema_type_t, void *); 58 extern void sema_destroy(ksema_t *); 59 extern void sema_p(ksema_t *); 60 extern int sema_p_sig(ksema_t *); 61 extern void sema_v(ksema_t *); 62 extern int sema_tryp(ksema_t *); 63 extern int sema_held(ksema_t *); 64 65 #endif /* defined(_KERNEL) */ 66 67 #ifdef __cplusplus 68 } 69 #endif 70 71 #endif /* _ASM */ 72 73 #endif /* _SYS_SEMAPHORE_H */ 74