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Current File : //usr/include/heim_threads.h |
/* * Copyright (c) 2003 Kungliga Tekniska Högskolan * (Royal Institute of Technology, Stockholm, Sweden). * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * 3. Neither the name of the Institute nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* $Id: heim_threads.h 14409 2004-12-18 16:03:38Z lha $ */ /* * Provide wrapper macros for thread synchronization primitives so we * can use native thread functions for those operating system that * supports it. * * This is so libkrb5.so (or more importantly, libgssapi.so) can have * thread support while the program that that dlopen(3)s the library * don't need to be linked to libpthread. */ #ifndef HEIM_THREADS_H #define HEIM_THREADS_H 1 /* assume headers already included */ #if defined(__NetBSD__) && __NetBSD_Version__ >= 106120000 && __NetBSD_Version__< 299001200 && defined(ENABLE_PTHREAD_SUPPORT) /* * NetBSD have a thread lib that we can use that part of libc that * works regardless if application are linked to pthreads or not. * NetBSD newer then 2.99.11 just use pthread.h, and the same thing * will happen. */ #include <threadlib.h> #define HEIMDAL_MUTEX mutex_t #define HEIMDAL_MUTEX_INITIALIZER MUTEX_INITIALIZER #define HEIMDAL_MUTEX_init(m) mutex_init(m, NULL) #define HEIMDAL_MUTEX_lock(m) mutex_lock(m) #define HEIMDAL_MUTEX_unlock(m) mutex_unlock(m) #define HEIMDAL_MUTEX_destroy(m) mutex_destroy(m) #define HEIMDAL_RWLOCK rwlock_t #define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER #define HEIMDAL_RWLOCK_init(l) rwlock_init(l, NULL) #define HEIMDAL_RWLOCK_rdlock(l) rwlock_rdlock(l) #define HEIMDAL_RWLOCK_wrlock(l) rwlock_wrlock(l) #define HEIMDAL_RWLOCK_tryrdlock(l) rwlock_tryrdlock(l) #define HEIMDAL_RWLOCK_trywrlock(l) rwlock_trywrlock(l) #define HEIMDAL_RWLOCK_unlock(l) rwlock_unlock(l) #define HEIMDAL_RWLOCK_destroy(l) rwlock_destroy(l) #define HEIMDAL_thread_key thread_key_t #define HEIMDAL_key_create(k,d,r) do { r = thr_keycreate(k,d); } while(0) #define HEIMDAL_setspecific(k,s,r) do { r = thr_setspecific(k,s); } while(0) #define HEIMDAL_getspecific(k) thr_getspecific(k) #define HEIMDAL_key_delete(k) thr_keydelete(k) #elif defined(ENABLE_PTHREAD_SUPPORT) && (!defined(__NetBSD__) || __NetBSD_Version__ >= 299001200) #include <pthread.h> #define HEIMDAL_MUTEX pthread_mutex_t #define HEIMDAL_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER #define HEIMDAL_MUTEX_init(m) pthread_mutex_init(m, NULL) #define HEIMDAL_MUTEX_lock(m) pthread_mutex_lock(m) #define HEIMDAL_MUTEX_unlock(m) pthread_mutex_unlock(m) #define HEIMDAL_MUTEX_destroy(m) pthread_mutex_destroy(m) #define HEIMDAL_RWLOCK rwlock_t #define HEIMDAL_RWLOCK_INITIALIZER RWLOCK_INITIALIZER #define HEIMDAL_RWLOCK_init(l) pthread_rwlock_init(l, NULL) #define HEIMDAL_RWLOCK_rdlock(l) pthread_rwlock_rdlock(l) #define HEIMDAL_RWLOCK_wrlock(l) pthread_rwlock_wrlock(l) #define HEIMDAL_RWLOCK_tryrdlock(l) pthread_rwlock_tryrdlock(l) #define HEIMDAL_RWLOCK_trywrlock(l) pthread_rwlock_trywrlock(l) #define HEIMDAL_RWLOCK_unlock(l) pthread_rwlock_unlock(l) #define HEIMDAL_RWLOCK_destroy(l) pthread_rwlock_destroy(l) #define HEIMDAL_thread_key pthread_key_t #define HEIMDAL_key_create(k,d,r) do { r = pthread_key_create(k,d); } while(0) #define HEIMDAL_setspecific(k,s,r) do { r = pthread_setspecific(k,s); } while(0) #define HEIMDAL_getspecific(k) pthread_getspecific(k) #define HEIMDAL_key_delete(k) pthread_key_delete(k) #elif defined(HEIMDAL_DEBUG_THREADS) /* no threads support, just do consistency checks */ #include <stdlib.h> #define HEIMDAL_MUTEX int #define HEIMDAL_MUTEX_INITIALIZER 0 #define HEIMDAL_MUTEX_init(m) do { (*(m)) = 0; } while(0) #define HEIMDAL_MUTEX_lock(m) do { if ((*(m))++ != 0) abort(); } while(0) #define HEIMDAL_MUTEX_unlock(m) do { if ((*(m))-- != 1) abort(); } while(0) #define HEIMDAL_MUTEX_destroy(m) do {if ((*(m)) != 0) abort(); } while(0) #define HEIMDAL_RWLOCK rwlock_t int #define HEIMDAL_RWLOCK_INITIALIZER 0 #define HEIMDAL_RWLOCK_init(l) do { } while(0) #define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) #define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) #define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) #define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) #define HEIMDAL_RWLOCK_unlock(l) do { } while(0) #define HEIMDAL_RWLOCK_destroy(l) do { } while(0) #define HEIMDAL_internal_thread_key 1 #else /* no thread support, no debug case */ #define HEIMDAL_MUTEX int #define HEIMDAL_MUTEX_INITIALIZER 0 #define HEIMDAL_MUTEX_init(m) do { (void)(m); } while(0) #define HEIMDAL_MUTEX_lock(m) do { (void)(m); } while(0) #define HEIMDAL_MUTEX_unlock(m) do { (void)(m); } while(0) #define HEIMDAL_MUTEX_destroy(m) do { (void)(m); } while(0) #define HEIMDAL_RWLOCK rwlock_t int #define HEIMDAL_RWLOCK_INITIALIZER 0 #define HEIMDAL_RWLOCK_init(l) do { } while(0) #define HEIMDAL_RWLOCK_rdlock(l) do { } while(0) #define HEIMDAL_RWLOCK_wrlock(l) do { } while(0) #define HEIMDAL_RWLOCK_tryrdlock(l) do { } while(0) #define HEIMDAL_RWLOCK_trywrlock(l) do { } while(0) #define HEIMDAL_RWLOCK_unlock(l) do { } while(0) #define HEIMDAL_RWLOCK_destroy(l) do { } while(0) #define HEIMDAL_internal_thread_key 1 #endif /* no thread support */ #ifdef HEIMDAL_internal_thread_key typedef struct heim_thread_key { void *value; void (*destructor)(void *); } heim_thread_key; #define HEIMDAL_thread_key heim_thread_key #define HEIMDAL_key_create(k,d,r) \ do { (k)->value = NULL; (k)->destructor = (d); r = 0; } while(0) #define HEIMDAL_setspecific(k,s,r) do { (k).value = s ; r = 0; } while(0) #define HEIMDAL_getspecific(k) ((k).value) #define HEIMDAL_key_delete(k) do { (*(k).destructor)((k).value); } while(0) #undef HEIMDAL_internal_thread_key #endif /* HEIMDAL_internal_thread_key */ #endif /* HEIM_THREADS_H */