usr/src/head/schedctl.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 2014 Garrett D'Amore <garrett@damore.org>
  24  *
  25  * Copyright 1996-2003 Sun Microsystems, Inc.  All rights reserved.
  26  * Use is subject to license terms.
  27  */
  28
  29 #ifndef _SCHEDCTL_H
  30 #define _SCHEDCTL_H
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include <sys/schedctl.h>
  37
  38 typedef sc_public_t schedctl_t;
  39
  40 extern void yield(void);
  41
  42 #define schedctl_start(p)                                       \
  43                 (void) (((p) == NULL)? 0 :                      \
  44                 ((((schedctl_t *)(p))->sc_nopreempt = 1), 0))
  45
  46 #define schedctl_stop(p)                                        \
  47                 (void) (((p) == NULL)? 0 :                      \
  48                 ((((schedctl_t *)(p))->sc_nopreempt = 0),       \
  49                 (((schedctl_t *)(p))->sc_yield? (yield(), 0) : 0)))
  50
  51 /*
  52  * libsched API
  53  */
  54 schedctl_t      *schedctl_init(void);
  55 schedctl_t      *schedctl_lookup(void);
  56 void            schedctl_exit(void);
  57
  58 #ifdef __cplusplus
  59 }
  60 #endif
  61
  62 #endif  /* _SCHEDCTL_H */