sys/compat/linux/common/linux_futex.h

   1 /*      $NetBSD: linux_futex.h,v 1.2 2005/12/11 12:20:19 christos Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. All advertising materials mentioning features or use of this software
  15  *    must display the following acknowledgement:
  16  *      This product includes software developed by Emmanuel Dreyfus
  17  * 4. The name of the author may not be used to endorse or promote
  18  *    products derived from this software without specific prior written
  19  *    permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
  22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  31  * POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef _LINUX_FUTEX_H
  35 #define _LINUX_FUTEX_H
  36
  37 #define LINUX_FUTEX_WAIT        0
  38 #define LINUX_FUTEX_WAKE        1
  39 #define LINUX_FUTEX_FD          2
  40 #define LINUX_FUTEX_REQUEUE     3
  41 #define LINUX_FUTEX_CMP_REQUEUE 4
  42 #define LINUX_FUTEX_WAKE_OP     5
  43
  44 #define LINUX_FUTEX_PRIVATE_FLAG        128
  45
  46 #define FUTEX_OP_SET            0
  47 #define FUTEX_OP_ADD            1
  48 #define FUTEX_OP_OR             2
  49 #define FUTEX_OP_ANDN           3
  50 #define FUTEX_OP_XOR            4
  51
  52 #define FUTEX_OP_OPARG_SHIFT    8
  53
  54 #define FUTEX_OP_CMP_EQ         0
  55 #define FUTEX_OP_CMP_NE         1
  56 #define FUTEX_OP_CMP_LT         2
  57 #define FUTEX_OP_CMP_LE         3
  58 #define FUTEX_OP_CMP_GT         4
  59 #define FUTEX_OP_CMP_GE         5
  60
  61 struct linux_robust_list {
  62         struct linux_robust_list        *next;
  63 };
  64
  65 struct linux_robust_list_head {
  66         struct linux_robust_list        list;
  67         unsigned long                   futex_offset;
  68         struct linux_robust_list        *pending_list;
  69 };
  70
  71 #define FUTEX_WAITERS           0x80000000
  72 #define FUTEX_OWNER_DIED        0x40000000
  73 #define FUTEX_TID_MASK          0x3fffffff
  74
  75 void    release_futexes(struct proc *);
  76
  77 #endif /* !_LINUX_FUTEX_H */