74 lines
2.6 KiB
C
74 lines
2.6 KiB
C
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/*
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Copyright (c) 2001 Wolfram Gloger
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Copyright (c) 2006 Cavium networks
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Permission to use, copy, modify, distribute, and sell this software
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and its documentation for any purpose is hereby granted without fee,
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provided that (i) the above copyright notices and this permission
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notice appear in all copies of the software and related documentation,
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and (ii) the name of Wolfram Gloger may not be used in any advertising
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or publicity relating to the software.
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THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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IN NO EVENT SHALL WOLFRAM GLOGER BE LIABLE FOR ANY SPECIAL,
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INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY
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DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY
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OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $Id: thread-m.h 30481 2007-12-05 21:46:59Z rfranz $
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One out of _LIBC, USE_PTHREADS, USE_THR or USE_SPROC should be
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defined, otherwise the token NO_THREADS and dummy implementations
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of the macros will be defined. */
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#ifndef _THREAD_M_H
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#define _THREAD_M_H
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#undef thread_atfork_static
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#undef NO_THREADS /* No threads, provide dummy macros */
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typedef int thread_id;
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/* The mutex functions used to do absolutely nothing, i.e. lock,
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trylock and unlock would always just return 0. However, even
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without any concurrently active threads, a mutex can be used
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legitimately as an `in use' flag. To make the code that is
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protected by a mutex async-signal safe, these macros would have to
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be based on atomic test-and-set operations, for example. */
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#ifdef __OCTEON__
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typedef cvmx_spinlock_t mutex_t;
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#define MUTEX_INITIALIZER CMVX_SPINLOCK_UNLOCKED_VAL
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#define mutex_init(m) cvmx_spinlock_init(m)
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#define mutex_lock(m) cvmx_spinlock_lock(m)
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#define mutex_trylock(m) (cvmx_spinlock_trylock(m))
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#define mutex_unlock(m) cvmx_spinlock_unlock(m)
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#else
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typedef int mutex_t;
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#define MUTEX_INITIALIZER 0
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#define mutex_init(m) (*(m) = 0)
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#define mutex_lock(m) ((*(m) = 1), 0)
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#define mutex_trylock(m) (*(m) ? 1 : ((*(m) = 1), 0))
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#define mutex_unlock(m) (*(m) = 0)
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#endif
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typedef void *tsd_key_t;
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#define tsd_key_create(key, destr) do {} while(0)
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#define tsd_setspecific(key, data) ((key) = (data))
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#define tsd_getspecific(key, vptr) (vptr = (key))
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#define thread_atfork(prepare, parent, child) do {} while(0)
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#endif /* !defined(_THREAD_M_H) */
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