1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2010, David Xu <davidxu@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 * 30 */ 31 32 #ifndef _SYS__UMTX_H_ 33 #define _SYS__UMTX_H_ 34 35 #include <sys/_types.h> 36 #include <sys/_timespec.h> 37 38 struct umtx { 39 volatile unsigned long u_owner; /* Owner of the mutex. */ 40 }; 41 42 struct umutex { 43 volatile __lwpid_t m_owner; /* Owner of the mutex */ 44 __uint32_t m_flags; /* Flags of the mutex */ 45 __uint32_t m_ceilings[2]; /* Priority protect ceiling */ 46 __uintptr_t m_rb_lnk; /* Robust linkage */ 47 #ifndef __LP64__ 48 __uint32_t m_pad; 49 #endif 50 __uint32_t m_spare[2]; 51 }; 52 53 struct ucond { 54 volatile __uint32_t c_has_waiters; /* Has waiters in kernel */ 55 __uint32_t c_flags; /* Flags of the condition variable */ 56 __uint32_t c_clockid; /* Clock id */ 57 __uint32_t c_spare[1]; /* Spare space */ 58 }; 59 60 struct urwlock { 61 volatile __int32_t rw_state; 62 __uint32_t rw_flags; 63 __uint32_t rw_blocked_readers; 64 __uint32_t rw_blocked_writers; 65 __uint32_t rw_spare[4]; 66 }; 67 68 struct _usem { 69 volatile __uint32_t _has_waiters; 70 volatile __uint32_t _count; 71 __uint32_t _flags; 72 }; 73 74 struct _usem2 { 75 volatile __uint32_t _count; /* Waiters flag in high bit. */ 76 __uint32_t _flags; 77 }; 78 79 struct _umtx_time { 80 struct timespec _timeout; 81 __uint32_t _flags; 82 __uint32_t _clockid; 83 }; 84 85 #endif /* !_SYS__UMTX_H_ */ 86