b981c8861d
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@12377 ec53bebd-3082-4978-b11e-865c3cabbd6b
99 lines
3.7 KiB
C
99 lines
3.7 KiB
C
/*
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* Copyright (c) 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* $Id$ */
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/*
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* Provide wrapper macros for thread synchronization primitives so we
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* can use native thread functions for those operating system that
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* supports it.
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*
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* This is so libkrb5.so (or more importantly, libgssapi.so) can have
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* thread support while the program that that dlopen(3)s the library
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* don't need to be linked to libpthread.
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*/
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#ifndef HEIM_THREADS_H
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#define HEIM_THREADS_H 1
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/* assume headers already included */
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#if defined(__NetBSD__) && __NetBSD_Version__ >= 106120000
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/*
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* NetBSD have a thread lib that we can use that part of libc that
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* works regardless if application are linked to pthreads or not.
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*/
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#include <threadlib.h>
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#define HEIMDAL_MUTEX mutex_t
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#define HEIMDAL_MUTEX_INITIALIZER MUTEX_INITIALIZER
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#define HEIMDAL_MUTEX_init(m) mutex_init(m, NULL)
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#define HEIMDAL_MUTEX_lock(m) mutex_lock(m)
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#define HEIMDAL_MUTEX_unlock(m) mutex_unlock(m)
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#define HEIMDAL_MUTEX_destroy(m) mutex_destroy(m)
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#elif defined(ENABLE_PTHREAD_SUPPORT)
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#define HEIMDAL_MUTEX pthread_mutex_t
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#define HEIMDAL_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
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#define HEIMDAL_MUTEX_init(m) pthread_mutex_init(m, NULL)
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#define HEIMDAL_MUTEX_lock(m) pthread_mutex_lock(m)
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#define HEIMDAL_MUTEX_unlock(m) pthread_mutex_unlock(m)
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#define HEIMDAL_MUTEX_destroy(m) pthread_mutex_destroy(m)
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#elif defined(HEIMDAL_DEBUG_THREADS)
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/* no threads support, just do consistency checks */
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#include <stdlib.h>
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#define HEIMDAL_MUTEX int
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#define HEIMDAL_MUTEX_INITIALIZER 0
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#define HEIMDAL_MUTEX_init(m) do { (*(m)) = 0; } while(0)
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#define HEIMDAL_MUTEX_lock(m) do { if ((*(m))++ != 0) abort(); } while(0)
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#define HEIMDAL_MUTEX_unlock(m) do { if ((*(m))-- != 1) abort(); } while(0)
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#define HEIMDAL_MUTEX_destroy(m) do {if ((*(m)) != 0) abort(); } while(0)
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#else /* no thread support, no debug case */
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#define HEIMDAL_MUTEX int
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#define HEIMDAL_MUTEX_INITIALIZER 0
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#define HEIMDAL_MUTEX_init(m) do { } while(0)
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#define HEIMDAL_MUTEX_lock(m) do { } while(0)
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#define HEIMDAL_MUTEX_unlock(m) do { } while(0)
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#define HEIMDAL_MUTEX_destroy(m) do { } while(0)
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#endif /* no thread support */
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#endif /* HEIM_THREADS_H */
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