1 /* $NetBSD: linux_futex.h,v 1.7 2013/04/16 23:03:05 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 #define LINUX_FUTEX_LOCK_PI 6 44 #define LINUX_FUTEX_UNLOCK_PI 7 45 #define LINUX_FUTEX_TRYLOCK_PI 8 46 #define LINUX_FUTEX_WAIT_BITSET 9 47 #define LINUX_FUTEX_WAKE_BITSET 10 48 #define LINUX_FUTEX_WAIT_REQUEUE_PI 11 49 #define LINUX_FUTEX_CMP_REQUEUE_PI 12 50 51 #define LINUX_FUTEX_PRIVATE_FLAG 128 52 #define LINUX_FUTEX_CLOCK_REALTIME 256 53 #define LINUX_FUTEX_CMD_MASK \ 54 (~(LINUX_FUTEX_PRIVATE_FLAG|LINUX_FUTEX_CLOCK_REALTIME)) 55 56 #define FUTEX_OP_SET 0 57 #define FUTEX_OP_ADD 1 58 #define FUTEX_OP_OR 2 59 #define FUTEX_OP_ANDN 3 60 #define FUTEX_OP_XOR 4 61 #define FUTEX_OP_OPARG_SHIFT 8 62 63 #define FUTEX_OP_CMP_EQ 0 64 #define FUTEX_OP_CMP_NE 1 65 #define FUTEX_OP_CMP_LT 2 66 #define FUTEX_OP_CMP_LE 3 67 #define FUTEX_OP_CMP_GT 4 68 #define FUTEX_OP_CMP_GE 5 69 70 struct linux_robust_list { 71 struct linux_robust_list *next; 72 }; 73 74 struct linux_robust_list_head { 75 struct linux_robust_list list; 76 unsigned long futex_offset; 77 struct linux_robust_list *pending_list; 78 }; 79 80 #define FUTEX_WAITERS 0x80000000 81 #define FUTEX_OWNER_DIED 0x40000000 82 #define FUTEX_TID_MASK 0x3fffffff 83 84 #define FUTEX_BITSET_MATCH_ANY 0xffffffff 85 86 void release_futexes(struct lwp *); 87 struct linux_sys_futex_args; 88 int linux_do_futex(struct lwp *, const struct linux_sys_futex_args *, 89 register_t *, struct timespec *); 90 void linux_futex_init(void); 91 void linux_futex_fini(void); 92 93 #endif /* !_LINUX_FUTEX_H */ 94