1 /* $NetBSD: pthread_types.h,v 1.5 2003/09/26 22:48:23 nathanw Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Nathan J. Williams. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #ifndef _LIB_PTHREAD_TYPES_H 40 #define _LIB_PTHREAD_TYPES_H 41 42 /* 43 * We use the "pthread_spin_t" name internally; "pthread_spinlock_t" is the 44 * POSIX spinlock object. 45 */ 46 typedef __cpu_simple_lock_t pthread_spin_t; 47 48 /* 49 * Copied from PTQ_HEAD in pthread_queue.h 50 */ 51 #define _PTQ_HEAD(name, type) \ 52 struct name { \ 53 struct type *ptqh_first;/* first element */ \ 54 struct type **ptqh_last;/* addr of last next element */ \ 55 } 56 57 _PTQ_HEAD(pthread_queue_t, __pthread_st); 58 59 struct __pthread_st; 60 struct __pthread_attr_st; 61 struct __pthread_mutex_st; 62 struct __pthread_mutexattr_st; 63 struct __pthread_cond_st; 64 struct __pthread_condattr_st; 65 struct __pthread_spin_st; 66 struct __pthread_rwlock_st; 67 struct __pthread_rwlockattr_st; 68 struct __pthread_barrier_st; 69 struct __pthread_barrierattr_st; 70 71 typedef struct __pthread_st *pthread_t; 72 typedef struct __pthread_attr_st pthread_attr_t; 73 typedef struct __pthread_mutex_st pthread_mutex_t; 74 typedef struct __pthread_mutexattr_st pthread_mutexattr_t; 75 typedef struct __pthread_cond_st pthread_cond_t; 76 typedef struct __pthread_condattr_st pthread_condattr_t; 77 typedef struct __pthread_once_st pthread_once_t; 78 typedef struct __pthread_spinlock_st pthread_spinlock_t; 79 typedef struct __pthread_rwlock_st pthread_rwlock_t; 80 typedef struct __pthread_rwlockattr_st pthread_rwlockattr_t; 81 typedef struct __pthread_barrier_st pthread_barrier_t; 82 typedef struct __pthread_barrierattr_st pthread_barrierattr_t; 83 typedef int pthread_key_t; 84 85 struct __pthread_attr_st { 86 unsigned int pta_magic; 87 88 int pta_flags; 89 void *pta_private; 90 }; 91 92 struct __pthread_mutex_st { 93 unsigned int ptm_magic; 94 95 /* Not a real spinlock; will never be spun on. Locked with 96 * pthread__simple_lock_try() or not at all. Therefore, not 97 * subject to preempted-spinlock-continuation. 98 * 99 * Open research question: Would it help threaded applications if 100 * preempted-lock-continuation were applied to mutexes? 101 */ 102 pthread_spin_t ptm_lock; 103 104 /* Protects the owner and blocked queue */ 105 pthread_spin_t ptm_interlock; 106 pthread_t ptm_owner; 107 struct pthread_queue_t ptm_blocked; 108 void *ptm_private; 109 }; 110 111 #define _PT_MUTEX_MAGIC 0x33330003 112 #define _PT_MUTEX_DEAD 0xDEAD0003 113 114 #define _PTHREAD_MUTEX_INITIALIZER { _PT_MUTEX_MAGIC, \ 115 __SIMPLELOCK_UNLOCKED, \ 116 __SIMPLELOCK_UNLOCKED, \ 117 NULL, \ 118 {NULL, NULL}, \ 119 NULL \ 120 } 121 122 123 struct __pthread_mutexattr_st { 124 unsigned int ptma_magic; 125 void *ptma_private; 126 }; 127 128 #define _PT_MUTEXATTR_MAGIC 0x44440004 129 #define _PT_MUTEXATTR_DEAD 0xDEAD0004 130 131 132 struct __pthread_cond_st { 133 unsigned int ptc_magic; 134 135 /* Protects the queue of waiters */ 136 pthread_spin_t ptc_lock; 137 struct pthread_queue_t ptc_waiters; 138 139 pthread_mutex_t *ptc_mutex; /* Current mutex */ 140 void *ptc_private; 141 }; 142 143 #define _PT_COND_MAGIC 0x55550005 144 #define _PT_COND_DEAD 0xDEAD0005 145 146 #define _PTHREAD_COND_INITIALIZER { _PT_COND_MAGIC, \ 147 __SIMPLELOCK_UNLOCKED, \ 148 {NULL, NULL}, \ 149 NULL, \ 150 NULL \ 151 } 152 153 struct __pthread_condattr_st { 154 unsigned int ptca_magic; 155 void *ptca_private; 156 }; 157 158 #define _PT_CONDATTR_MAGIC 0x66660006 159 #define _PT_CONDATTR_DEAD 0xDEAD0006 160 161 struct __pthread_once_st { 162 pthread_mutex_t pto_mutex; 163 int pto_done; 164 }; 165 166 #define _PTHREAD_ONCE_INIT { PTHREAD_MUTEX_INITIALIZER, 0 } 167 168 struct __pthread_spinlock_st { 169 unsigned int pts_magic; 170 pthread_spin_t pts_spin; 171 int pts_flags; 172 }; 173 174 #define _PT_SPINLOCK_MAGIC 0x77770007 175 #define _PT_SPINLOCK_DEAD 0xDEAD0007 176 #define _PT_SPINLOCK_PSHARED 0x00000001 177 178 /* PTHREAD_SPINLOCK_INITIALIZER is an extension not specified by POSIX. */ 179 #define _PTHREAD_SPINLOCK_INITIALIZER { _PT_SPINLOCK_MAGIC, \ 180 __SIMPLELOCK_UNLOCKED, \ 181 0 \ 182 } 183 184 struct __pthread_rwlock_st { 185 unsigned int ptr_magic; 186 187 /* Protects data below */ 188 pthread_spin_t ptr_interlock; 189 190 struct pthread_queue_t ptr_rblocked; 191 struct pthread_queue_t ptr_wblocked; 192 unsigned int ptr_nreaders; 193 pthread_t ptr_writer; 194 void *ptr_private; 195 }; 196 197 #define _PT_RWLOCK_MAGIC 0x99990009 198 #define _PT_RWLOCK_DEAD 0xDEAD0009 199 200 #define _PTHREAD_RWLOCK_INITIALIZER { _PT_RWLOCK_MAGIC, \ 201 __SIMPLELOCK_UNLOCKED, \ 202 {NULL, NULL}, \ 203 {NULL, NULL}, \ 204 0, \ 205 NULL, \ 206 NULL, \ 207 } 208 209 struct __pthread_rwlockattr_st { 210 unsigned int ptra_magic; 211 void *ptra_private; 212 }; 213 214 #define _PT_RWLOCKATTR_MAGIC 0x99990909 215 #define _PT_RWLOCKATTR_DEAD 0xDEAD0909 216 217 struct __pthread_barrier_st { 218 unsigned int ptb_magic; 219 220 /* Protects data below */ 221 pthread_spin_t ptb_lock; 222 223 struct pthread_queue_t ptb_waiters; 224 unsigned int ptb_initcount; 225 unsigned int ptb_curcount; 226 unsigned int ptb_generation; 227 228 void *ptb_private; 229 }; 230 231 #define _PT_BARRIER_MAGIC 0x88880008 232 #define _PT_BARRIER_DEAD 0xDEAD0008 233 234 struct __pthread_barrierattr_st { 235 unsigned int ptba_magic; 236 void *ptba_private; 237 }; 238 239 #define _PT_BARRIERATTR_MAGIC 0x88880808 240 #define _PT_BARRIERATTR_DEAD 0xDEAD0808 241 242 #endif /* _LIB_PTHREAD_TYPES_H */ 243