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 * $FreeBSD$ 34 */ 35 36 #ifndef _LINUX_FUTEX_H 37 #define _LINUX_FUTEX_H 38 39 extern LIST_HEAD(futex_list, futex) futex_list; 40 extern struct mtx futex_mtx; 41 42 #define LINUX_FUTEX_WAIT 0 43 #define LINUX_FUTEX_WAKE 1 44 #define LINUX_FUTEX_FD 2 /* unused */ 45 #define LINUX_FUTEX_REQUEUE 3 46 #define LINUX_FUTEX_CMP_REQUEUE 4 47 #define LINUX_FUTEX_WAKE_OP 5 48 #define LINUX_FUTEX_LOCK_PI 6 49 #define LINUX_FUTEX_UNLOCK_PI 7 50 #define LINUX_FUTEX_TRYLOCK_PI 8 51 52 #define LINUX_FUTEX_PRIVATE_FLAG 128 53 54 #define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */ 55 #define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */ 56 #define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */ 57 #define FUTEX_OP_ANDN 3 /* *(int *)UADDR2 &= ~OPARG; */ 58 #define FUTEX_OP_XOR 4 /* *(int *)UADDR2 ^= OPARG; */ 59 60 #define FUTEX_OP_OPARG_SHIFT 8 /* Use (1 << OPARG) instead of OPARG. */ 61 62 #define FUTEX_OP_CMP_EQ 0 /* if (oldval == CMPARG) wake */ 63 #define FUTEX_OP_CMP_NE 1 /* if (oldval != CMPARG) wake */ 64 #define FUTEX_OP_CMP_LT 2 /* if (oldval < CMPARG) wake */ 65 #define FUTEX_OP_CMP_LE 3 /* if (oldval <= CMPARG) wake */ 66 #define FUTEX_OP_CMP_GT 4 /* if (oldval > CMPARG) wake */ 67 #define FUTEX_OP_CMP_GE 5 /* if (oldval >= CMPARG) wake */ 68 69 #define FUTEX_WAITERS 0x80000000 70 #define FUTEX_OWNER_DIED 0x40000000 71 #define FUTEX_TID_MASK 0x3fffffff 72 73 void release_futexes(struct proc *); 74 75 #endif /* !_LINUX_FUTEX_H */ 76