usr/src/cmd/scadm/sparc/mpxu/common/xsem.h

   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__ */