1 /*- 2 * Copyright (c) 2010, David Xu <davidxu@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * 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 * 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. 25 * 26 * $FreeBSD$ 27 * 28 */ 29 30 #ifndef _SYS__UMTX_H_ 31 #define _SYS__UMTX_H_ 32 33 #include <sys/_types.h> 34 #include <sys/_timespec.h> 35 36 struct umutex { 37 volatile __lwpid_t m_owner; /* Owner of the mutex */ 38 __uint32_t m_flags; /* Flags of the mutex */ 39 __uint32_t m_ceilings[2]; /* Priority protect ceiling */ 40 __uintptr_t m_rb_lnk; /* Robust linkage */ 41 #ifndef __LP64__ 42 __uint32_t m_pad; 43 #endif 44 __uint32_t m_spare[2]; 45 }; 46 47 struct ucond { 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 */ 52 }; 53 54 struct urwlock { 55 volatile __int32_t rw_state; 56 __uint32_t rw_flags; 57 __uint32_t rw_blocked_readers; 58 __uint32_t rw_blocked_writers; 59 __uint32_t rw_spare[4]; 60 }; 61 62 struct _usem { 63 volatile __uint32_t _has_waiters; 64 volatile __uint32_t _count; 65 __uint32_t _flags; 66 }; 67 68 struct _usem2 { 69 volatile __uint32_t _count; /* Waiters flag in high bit. */ 70 __uint32_t _flags; 71 }; 72 73 struct _umtx_time { 74 struct timespec _timeout; 75 __uint32_t _flags; 76 __uint32_t _clockid; 77 }; 78 79 #endif /* !_SYS__UMTX_H_ */ 80