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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 /* 33 * Public interface to semaphores. See semaphore(9F) for details. 34 */ 35 36 #ifndef _ASM 37 38 #ifdef _KERNEL 39 #include <sys/thread.h> 40 #endif 41 42 #ifdef __cplusplus 43 extern "C" { 44 #endif 45 46 typedef enum { 47 SEMA_DEFAULT, 48 SEMA_DRIVER 49 } ksema_type_t; 50 51 typedef struct _ksema { 52 void * _opaque[2]; /* 2 words on 4 byte alignment */ 53 } ksema_t; 54 55 #if defined(_KERNEL) 56 57 #define SEMA_HELD(x) (sema_held((x))) 58 59 extern void sema_init(ksema_t *, uint32_t, char *, ksema_type_t, void *); 60 extern void sema_destroy(ksema_t *); 61 extern void sema_p(ksema_t *); 62 extern int sema_p_sig(ksema_t *); 63 extern void sema_v(ksema_t *); 64 extern int sema_tryp(ksema_t *); 65 extern int sema_held(ksema_t *); 66 67 #endif /* defined(_KERNEL) */ 68 69 #ifdef __cplusplus 70 } 71 #endif 72 73 #endif /* _ASM */ 74 75 #endif /* _SYS_SEMAPHORE_H */ 76