2 * Copyright (c) 2010, David Xu <davidxu@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
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.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/_types.h>
34 #include <sys/_timespec.h>
37 volatile unsigned long u_owner; /* Owner of the mutex. */
41 volatile __lwpid_t m_owner; /* Owner of the mutex */
42 __uint32_t m_flags; /* Flags of the mutex */
43 __uint32_t m_ceilings[2]; /* Priority protect ceiling */
44 __uint32_t m_spare[4];
48 volatile __uint32_t c_has_waiters; /* Has waiters in kernel */
49 __uint32_t c_flags; /* Flags of the condition variable */
50 __uint32_t c_clockid; /* Clock id */
51 __uint32_t c_spare[1]; /* Spare space */
55 volatile __int32_t rw_state;
57 __uint32_t rw_blocked_readers;
58 __uint32_t rw_blocked_writers;
59 __uint32_t rw_spare[4];
63 volatile __uint32_t _has_waiters;
64 volatile __uint32_t _count;
69 struct timespec _timeout;
74 #endif /* !_SYS__UMTX_H_ */