1/* 2 * Copyright (c) 2003 Kungliga Tekniska Högskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 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 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34/* $Id$ */ 35 36/* 37 * Provide wrapper macros for thread synchronization primitives so we 38 * can use native thread functions for those operating system that 39 * supports it. 40 * 41 * This is so libkrb5.so (or more importantly, libgssapi.so) can have 42 * thread support while the program that that dlopen(3)s the library 43 * don't need to be linked to libpthread. 44 */ 45 46#ifndef HEIM_THREADS_H 47#define HEIM_THREADS_H 1 48 49/* assume headers already included */ 50 51#if defined(__NetBSD__) && __NetBSD_Version__ >= 106120000 && __NetBSD_Version__< 299001200 && defined(ENABLE_PTHREAD_SUPPORT) 52 53/* 54 * NetBSD have a thread lib that we can use that part of libc that 55 * works regardless if application are linked to pthreads or not. 56 * NetBSD newer then 2.99.11 just use pthread.h, and the same thing 57 * will happen. 58 */ 59#include <threadlib.h> 60 61#define HEIMDAL_MUTEX mutex_t 62#define HEIMDAL_MUTEX_INITIALIZER MUTEX_INITIALIZER 63#define HEIMDAL_MUTEX_init(m) mutex_init(m, NULL) 64#define HEIMDAL_MUTEX_lock(m) mutex_lock(m) 65#define HEIMDAL_MUTEX_unlock(m) mutex_unlock(m) 66#define HEIMDAL_MUTEX_destroy(m) mutex_destroy(m) 67 68#define HEIMDAL_RWLOCK rwlock_t 69#define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER 70#define HEIMDAL_RWLOCK_init(l) rwlock_init(l, NULL) 71#define HEIMDAL_RWLOCK_rdlock(l) rwlock_rdlock(l) 72#define HEIMDAL_RWLOCK_wrlock(l) rwlock_wrlock(l) 73#define HEIMDAL_RWLOCK_tryrdlock(l) rwlock_tryrdlock(l) 74#define HEIMDAL_RWLOCK_trywrlock(l) rwlock_trywrlock(l) 75#define HEIMDAL_RWLOCK_unlock(l) rwlock_unlock(l) 76#define HEIMDAL_RWLOCK_destroy(l) rwlock_destroy(l) 77 78#define HEIMDAL_thread_key thread_key_t 79#define HEIMDAL_key_create(k,d,r) do { r = thr_keycreate(k,d); } while(0) 80#define HEIMDAL_setspecific(k,s,r) do { r = thr_setspecific(k,s); } while(0) 81#define HEIMDAL_getspecific(k) thr_getspecific(k) 82#define HEIMDAL_key_delete(k) thr_keydelete(k) 83 84#elif defined(ENABLE_PTHREAD_SUPPORT) && (!defined(__NetBSD__) || __NetBSD_Version__ >= 299001200) 85 86#include <pthread.h> 87 88#define HEIMDAL_MUTEX pthread_mutex_t 89#define HEIMDAL_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER 90#define HEIMDAL_MUTEX_init(m) pthread_mutex_init(m, NULL) 91#define HEIMDAL_MUTEX_lock(m) pthread_mutex_lock(m) 92#define HEIMDAL_MUTEX_unlock(m) pthread_mutex_unlock(m) 93#define HEIMDAL_MUTEX_destroy(m) pthread_mutex_destroy(m) 94 95#define HEIMDAL_RWLOCK rwlock_t 96#define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER 97#define HEIMDAL_RWLOCK_init(l) pthread_rwlock_init(l, NULL) 98#define HEIMDAL_RWLOCK_rdlock(l) pthread_rwlock_rdlock(l) 99#define HEIMDAL_RWLOCK_wrlock(l) pthread_rwlock_wrlock(l) 100#define HEIMDAL_RWLOCK_tryrdlock(l) pthread_rwlock_tryrdlock(l) 101#define HEIMDAL_RWLOCK_trywrlock(l) pthread_rwlock_trywrlock(l) 102#define HEIMDAL_RWLOCK_unlock(l) pthread_rwlock_unlock(l) 103#define HEIMDAL_RWLOCK_destroy(l) pthread_rwlock_destroy(l) 104 105#define HEIMDAL_thread_key pthread_key_t 106#define HEIMDAL_key_create(k,d,r) do { r = pthread_key_create(k,d); } while(0) 107#define HEIMDAL_setspecific(k,s,r) do { r = pthread_setspecific(k,s); } while(0) 108#define HEIMDAL_getspecific(k) pthread_getspecific(k) 109#define HEIMDAL_key_delete(k) pthread_key_delete(k) 110 111#elif defined(HEIMDAL_DEBUG_THREADS) 112 113/* no threads support, just do consistency checks */ 114#include <stdlib.h> 115 116#define HEIMDAL_MUTEX int 117#define HEIMDAL_MUTEX_INITIALIZER 0 118#define HEIMDAL_MUTEX_init(m) do { (*(m)) = 0; } while(0) 119#define HEIMDAL_MUTEX_lock(m) do { if ((*(m))++ != 0) abort(); } while(0) 120#define HEIMDAL_MUTEX_unlock(m) do { if ((*(m))-- != 1) abort(); } while(0) 121#define HEIMDAL_MUTEX_destroy(m) do {if ((*(m)) != 0) abort(); } while(0) 122 123#define HEIMDAL_RWLOCK rwlock_t int 124#define HEIMDAL_RWLOCK_INITIALIZER 0 125#define HEIMDAL_RWLOCK_init(l) do { } while(0) 126#define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) 127#define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) 128#define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) 129#define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) 130#define HEIMDAL_RWLOCK_unlock(l) do { } while(0) 131#define HEIMDAL_RWLOCK_destroy(l) do { } while(0) 132 133#define HEIMDAL_internal_thread_key 1 134 135#else /* no thread support, no debug case */ 136 137#define HEIMDAL_MUTEX int 138#define HEIMDAL_MUTEX_INITIALIZER 0 139#define HEIMDAL_MUTEX_init(m) do { (void)(m); } while(0) 140#define HEIMDAL_MUTEX_lock(m) do { (void)(m); } while(0) 141#define HEIMDAL_MUTEX_unlock(m) do { (void)(m); } while(0) 142#define HEIMDAL_MUTEX_destroy(m) do { (void)(m); } while(0) 143 144#define HEIMDAL_RWLOCK rwlock_t int 145#define HEIMDAL_RWLOCK_INITIALIZER 0 146#define HEIMDAL_RWLOCK_init(l) do { } while(0) 147#define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) 148#define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) 149#define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) 150#define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) 151#define HEIMDAL_RWLOCK_unlock(l) do { } while(0) 152#define HEIMDAL_RWLOCK_destroy(l) do { } while(0) 153 154#define HEIMDAL_internal_thread_key 1 155 156#endif /* no thread support */ 157 158#ifdef HEIMDAL_internal_thread_key 159 160typedef struct heim_thread_key { 161 void *value; 162 void (*destructor)(void *); 163} heim_thread_key; 164 165#define HEIMDAL_thread_key heim_thread_key 166#define HEIMDAL_key_create(k,d,r) \ 167 do { (k)->value = NULL; (k)->destructor = (d); r = 0; } while(0) 168#define HEIMDAL_setspecific(k,s,r) do { (k).value = s ; r = 0; } while(0) 169#define HEIMDAL_getspecific(k) ((k).value) 170#define HEIMDAL_key_delete(k) do { (*(k).destructor)((k).value); } while(0) 171 172#undef HEIMDAL_internal_thread_key 173#endif /* HEIMDAL_internal_thread_key */ 174 175#endif /* HEIM_THREADS_H */ 176