1 /* $NetBSD: heim_threads.h,v 1.1.1.3 2014/04/24 12:45:27 pettai Exp $ */ 2 3 /* 4 * Copyright (c) 2003 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 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 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* Id */ 37 38 /* 39 * Provide wrapper macros for thread synchronization primitives so we 40 * can use native thread functions for those operating system that 41 * supports it. 42 * 43 * This is so libkrb5.so (or more importantly, libgssapi.so) can have 44 * thread support while the program that that dlopen(3)s the library 45 * don't need to be linked to libpthread. 46 */ 47 48 #ifndef HEIM_THREADS_H 49 #define HEIM_THREADS_H 1 50 51 /* assume headers already included */ 52 53 #if defined(__NetBSD__) && __NetBSD_Version__ >= 106120000 && __NetBSD_Version__< 299001200 && defined(ENABLE_PTHREAD_SUPPORT) 54 55 /* 56 * NetBSD have a thread lib that we can use that part of libc that 57 * works regardless if application are linked to pthreads or not. 58 * NetBSD newer then 2.99.11 just use pthread.h, and the same thing 59 * will happen. 60 */ 61 #include <threadlib.h> 62 63 #define HEIMDAL_MUTEX mutex_t 64 #define HEIMDAL_MUTEX_INITIALIZER MUTEX_INITIALIZER 65 #define HEIMDAL_MUTEX_init(m) mutex_init(m, NULL) 66 #define HEIMDAL_MUTEX_lock(m) mutex_lock(m) 67 #define HEIMDAL_MUTEX_unlock(m) mutex_unlock(m) 68 #define HEIMDAL_MUTEX_destroy(m) mutex_destroy(m) 69 70 #define HEIMDAL_RWLOCK rwlock_t 71 #define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER 72 #define HEIMDAL_RWLOCK_init(l) rwlock_init(l, NULL) 73 #define HEIMDAL_RWLOCK_rdlock(l) rwlock_rdlock(l) 74 #define HEIMDAL_RWLOCK_wrlock(l) rwlock_wrlock(l) 75 #define HEIMDAL_RWLOCK_tryrdlock(l) rwlock_tryrdlock(l) 76 #define HEIMDAL_RWLOCK_trywrlock(l) rwlock_trywrlock(l) 77 #define HEIMDAL_RWLOCK_unlock(l) rwlock_unlock(l) 78 #define HEIMDAL_RWLOCK_destroy(l) rwlock_destroy(l) 79 80 #define HEIMDAL_thread_key thread_key_t 81 #define HEIMDAL_key_create(k,d,r) do { r = thr_keycreate(k,d); } while(0) 82 #define HEIMDAL_setspecific(k,s,r) do { r = thr_setspecific(k,s); } while(0) 83 #define HEIMDAL_getspecific(k) thr_getspecific(k) 84 #define HEIMDAL_key_delete(k) thr_keydelete(k) 85 86 #elif defined(ENABLE_PTHREAD_SUPPORT) && (!defined(__NetBSD__) || __NetBSD_Version__ >= 299001200) 87 88 #include <pthread.h> 89 90 #define HEIMDAL_MUTEX pthread_mutex_t 91 #define HEIMDAL_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER 92 #define HEIMDAL_MUTEX_init(m) pthread_mutex_init(m, NULL) 93 #define HEIMDAL_MUTEX_lock(m) pthread_mutex_lock(m) 94 #define HEIMDAL_MUTEX_unlock(m) pthread_mutex_unlock(m) 95 #define HEIMDAL_MUTEX_destroy(m) pthread_mutex_destroy(m) 96 97 #define HEIMDAL_RWLOCK rwlock_t 98 #define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER 99 #define HEIMDAL_RWLOCK_init(l) pthread_rwlock_init(l, NULL) 100 #define HEIMDAL_RWLOCK_rdlock(l) pthread_rwlock_rdlock(l) 101 #define HEIMDAL_RWLOCK_wrlock(l) pthread_rwlock_wrlock(l) 102 #define HEIMDAL_RWLOCK_tryrdlock(l) pthread_rwlock_tryrdlock(l) 103 #define HEIMDAL_RWLOCK_trywrlock(l) pthread_rwlock_trywrlock(l) 104 #define HEIMDAL_RWLOCK_unlock(l) pthread_rwlock_unlock(l) 105 #define HEIMDAL_RWLOCK_destroy(l) pthread_rwlock_destroy(l) 106 107 #define HEIMDAL_thread_key pthread_key_t 108 #define HEIMDAL_key_create(k,d,r) do { r = pthread_key_create(k,d); } while(0) 109 #define HEIMDAL_setspecific(k,s,r) do { r = pthread_setspecific(k,s); } while(0) 110 #define HEIMDAL_getspecific(k) pthread_getspecific(k) 111 #define HEIMDAL_key_delete(k) pthread_key_delete(k) 112 113 #elif defined(HEIMDAL_DEBUG_THREADS) 114 115 /* no threads support, just do consistency checks */ 116 #include <stdlib.h> 117 118 #define HEIMDAL_MUTEX int 119 #define HEIMDAL_MUTEX_INITIALIZER 0 120 #define HEIMDAL_MUTEX_init(m) do { (*(m)) = 0; } while(0) 121 #define HEIMDAL_MUTEX_lock(m) do { if ((*(m))++ != 0) abort(); } while(0) 122 #define HEIMDAL_MUTEX_unlock(m) do { if ((*(m))-- != 1) abort(); } while(0) 123 #define HEIMDAL_MUTEX_destroy(m) do {if ((*(m)) != 0) abort(); } while(0) 124 125 #define HEIMDAL_RWLOCK rwlock_t int 126 #define HEIMDAL_RWLOCK_INITIALIZER 0 127 #define HEIMDAL_RWLOCK_init(l) do { } while(0) 128 #define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) 129 #define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) 130 #define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) 131 #define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) 132 #define HEIMDAL_RWLOCK_unlock(l) do { } while(0) 133 #define HEIMDAL_RWLOCK_destroy(l) do { } while(0) 134 135 #define HEIMDAL_internal_thread_key 1 136 137 #else /* no thread support, no debug case */ 138 139 #define HEIMDAL_MUTEX int 140 #define HEIMDAL_MUTEX_INITIALIZER 0 141 #define HEIMDAL_MUTEX_init(m) do { (void)(m); } while(0) 142 #define HEIMDAL_MUTEX_lock(m) do { (void)(m); } while(0) 143 #define HEIMDAL_MUTEX_unlock(m) do { (void)(m); } while(0) 144 #define HEIMDAL_MUTEX_destroy(m) do { (void)(m); } while(0) 145 146 #define HEIMDAL_RWLOCK rwlock_t int 147 #define HEIMDAL_RWLOCK_INITIALIZER 0 148 #define HEIMDAL_RWLOCK_init(l) do { } while(0) 149 #define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) 150 #define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) 151 #define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) 152 #define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) 153 #define HEIMDAL_RWLOCK_unlock(l) do { } while(0) 154 #define HEIMDAL_RWLOCK_destroy(l) do { } while(0) 155 156 #define HEIMDAL_internal_thread_key 1 157 158 #endif /* no thread support */ 159 160 #ifdef HEIMDAL_internal_thread_key 161 162 typedef struct heim_thread_key { 163 void *value; 164 void (*destructor)(void *); 165 } heim_thread_key; 166 167 #define HEIMDAL_thread_key heim_thread_key 168 #define HEIMDAL_key_create(k,d,r) \ 169 do { (k)->value = NULL; (k)->destructor = (d); r = 0; } while(0) 170 #define HEIMDAL_setspecific(k,s,r) do { (k).value = s ; r = 0; } while(0) 171 #define HEIMDAL_getspecific(k) ((k).value) 172 #define HEIMDAL_key_delete(k) do { (*(k).destructor)((k).value); } while(0) 173 174 #undef HEIMDAL_internal_thread_key 175 #endif /* HEIMDAL_internal_thread_key */ 176 177 #endif /* HEIM_THREADS_H */ 178