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Diffstat (limited to 'sys/compat/linux/linux_futex.h')
| -rw-r--r-- | sys/compat/linux/linux_futex.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sys/compat/linux/linux_futex.h b/sys/compat/linux/linux_futex.h new file mode 100644 index 000000000000..1d462a74816c --- /dev/null +++ b/sys/compat/linux/linux_futex.h @@ -0,0 +1,75 @@ +/* $NetBSD: linux_futex.h,v 1.2 2005/12/11 12:20:19 christos Exp $ */ + +/*- + * Copyright (c) 2005 Emmanuel Dreyfus, all rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Emmanuel Dreyfus + * 4. The name of the author may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#ifndef _LINUX_FUTEX_H +#define _LINUX_FUTEX_H + +extern LIST_HEAD(futex_list, futex) futex_list; +extern struct mtx futex_mtx; + +#define LINUX_FUTEX_WAIT 0 +#define LINUX_FUTEX_WAKE 1 +#define LINUX_FUTEX_FD 2 /* unused */ +#define LINUX_FUTEX_REQUEUE 3 +#define LINUX_FUTEX_CMP_REQUEUE 4 +#define LINUX_FUTEX_WAKE_OP 5 +#define LINUX_FUTEX_LOCK_PI 6 +#define LINUX_FUTEX_UNLOCK_PI 7 +#define LINUX_FUTEX_TRYLOCK_PI 8 + +#define LINUX_FUTEX_PRIVATE_FLAG 128 + +#define FUTEX_OP_SET 0 /* *(int *)UADDR2 = OPARG; */ +#define FUTEX_OP_ADD 1 /* *(int *)UADDR2 += OPARG; */ +#define FUTEX_OP_OR 2 /* *(int *)UADDR2 |= OPARG; */ +#define FUTEX_OP_ANDN 3 /* *(int *)UADDR2 &= ~OPARG; */ +#define FUTEX_OP_XOR 4 /* *(int *)UADDR2 ^= OPARG; */ + +#define FUTEX_OP_OPARG_SHIFT 8 /* Use (1 << OPARG) instead of OPARG. */ + +#define FUTEX_OP_CMP_EQ 0 /* if (oldval == CMPARG) wake */ +#define FUTEX_OP_CMP_NE 1 /* if (oldval != CMPARG) wake */ +#define FUTEX_OP_CMP_LT 2 /* if (oldval < CMPARG) wake */ +#define FUTEX_OP_CMP_LE 3 /* if (oldval <= CMPARG) wake */ +#define FUTEX_OP_CMP_GT 4 /* if (oldval > CMPARG) wake */ +#define FUTEX_OP_CMP_GE 5 /* if (oldval >= CMPARG) wake */ + +#define FUTEX_WAITERS 0x80000000 +#define FUTEX_OWNER_DIED 0x40000000 +#define FUTEX_TID_MASK 0x3fffffff + +void release_futexes(struct proc *); + +#endif /* !_LINUX_FUTEX_H */ |