The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/ksem.h

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    1 /*      $NetBSD: ksem.h,v 1.11 2008/11/14 15:49:21 ad Exp $     */
    2 
    3 /*
    4  * Copyright (c) 2002 Alfred Perlstein <alfred@FreeBSD.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #ifndef _SYS_KSEM_H_
   30 #define _SYS_KSEM_H_
   31 
   32 #include <sys/cdefs.h>
   33 
   34 #ifdef _KERNEL
   35 #define KSEM_MAX        128
   36 
   37 int do_ksem_init(struct lwp *, unsigned int, intptr_t *, copyout_t);
   38 int do_ksem_open(struct lwp *, const char *, int, mode_t, unsigned int,
   39     intptr_t *, copyout_t);
   40 
   41 extern int      posix_semaphores;
   42 extern int      ksem_max;
   43 #endif
   44 
   45 #ifdef _LIBC
   46 __BEGIN_DECLS
   47 int _ksem_close(intptr_t);
   48 int _ksem_destroy(intptr_t);
   49 int _ksem_getvalue(intptr_t, int *);
   50 int _ksem_init(unsigned int, intptr_t *);
   51 int _ksem_open(const char *, int, mode_t, unsigned int, intptr_t *);
   52 int _ksem_post(intptr_t);
   53 int _ksem_trywait(intptr_t);
   54 int _ksem_unlink(const char *);
   55 int _ksem_wait(intptr_t);
   56 __END_DECLS
   57 #endif /* _LIBC */
   58 
   59 #endif /* _SYS_KSEM_H_ */

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