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 */ 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 umtx { 37 volatile unsigned long u_owner; /* Owner of the mutex. */ 38 }; 39 40 struct umutex { 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 __uintptr_t m_rb_lnk; /* Robust linkage */ 45 #ifndef __LP64__ 46 __uint32_t m_pad; 47 #endif 48 __uint32_t m_spare[2]; 49 }; 50 51 struct ucond { 52 volatile __uint32_t c_has_waiters; /* Has waiters in kernel */ 53 __uint32_t c_flags; /* Flags of the condition variable */ 54 __uint32_t c_clockid; /* Clock id */ 55 __uint32_t c_spare[1]; /* Spare space */ 56 }; 57 58 struct urwlock { 59 volatile __int32_t rw_state; 60 __uint32_t rw_flags; 61 __uint32_t rw_blocked_readers; 62 __uint32_t rw_blocked_writers; 63 __uint32_t rw_spare[4]; 64 }; 65 66 struct _usem { 67 volatile __uint32_t _has_waiters; 68 volatile __uint32_t _count; 69 __uint32_t _flags; 70 }; 71 72 struct _usem2 { 73 volatile __uint32_t _count; /* Waiters flag in high bit. */ 74 __uint32_t _flags; 75 }; 76 77 struct _umtx_time { 78 struct timespec _timeout; 79 __uint32_t _flags; 80 __uint32_t _clockid; 81 }; 82 83 #endif /* !_SYS__UMTX_H_ */ 84