| /* |
| * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 _OPENSOLARIS_SYS_MUTEX_H_ |
| #define _OPENSOLARIS_SYS_MUTEX_H_ |
| |
| typedef struct sx kmutex_t; |
| |
| #include <sys/param.h> |
| #include <sys/lock.h> |
| #include_next <sys/sdt.h> |
| #include_next <sys/mutex.h> |
| #include <sys/proc.h> |
| #include <sys/sx.h> |
| |
| typedef enum { |
| MUTEX_DEFAULT = 0 /* kernel default mutex */ |
| } kmutex_type_t; |
| |
| #define MUTEX_HELD(x) (mutex_owned(x)) |
| #define MUTEX_NOT_HELD(x) (!mutex_owned(x) || panicstr) |
| |
| #ifndef OPENSOLARIS_WITNESS |
| #define MUTEX_FLAGS (SX_DUPOK | SX_NEW | SX_NOWITNESS) |
| #else |
| #define MUTEX_FLAGS (SX_DUPOK | SX_NEW) |
| #endif |
| |
| #define mutex_init(lock, desc, type, arg) do { \ |
| const char *_name; \ |
| ASSERT((type) == MUTEX_DEFAULT); \ |
| for (_name = #lock; *_name != '\0'; _name++) { \ |
| if (*_name >= 'a' && *_name <= 'z') \ |
| break; \ |
| } \ |
| if (*_name == '\0') \ |
| _name = #lock; \ |
| sx_init_flags((lock), _name, MUTEX_FLAGS); \ |
| } while (0) |
| #define mutex_destroy(lock) sx_destroy(lock) |
| #define mutex_enter(lock) sx_xlock(lock) |
| #define mutex_enter_nested(lock, type) sx_xlock(lock) |
| #define mutex_tryenter(lock) sx_try_xlock(lock) |
| #define mutex_exit(lock) sx_xunlock(lock) |
| #define mutex_owned(lock) sx_xlocked(lock) |
| #define mutex_owner(lock) sx_xholder(lock) |
| #endif /* _OPENSOLARIS_SYS_MUTEX_H_ */ |