thread-m.h revision 302408 
1145522Sdarrenr/*
2145522SdarrenrCopyright (c) 2001 Wolfram Gloger
353642SguidoCopyright (c) 2006 Cavium networks
4255332Scy
553642SguidoPermission to use, copy, modify, distribute, and sell this software
680482Sdarrenrand its documentation for any purpose is hereby granted without fee,
753642Sguidoprovided that (i) the above copyright notices and this permission
853642Sguidonotice appear in all copies of the software and related documentation,
957126Sguidoand (ii) the name of Wolfram Gloger may not be used in any advertising
10172776Sdarrenror publicity relating to the software.
1153642Sguido
1253642SguidoTHE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
1353642SguidoEXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
1453642SguidoWARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
1553642Sguido
16255332ScyIN NO EVENT SHALL WOLFRAM GLOGER BE LIABLE FOR ANY SPECIAL,
1753642SguidoINCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY
18255332ScyDAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
19145522SdarrenrWHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY
20255332ScyOF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21PERFORMANCE OF THIS SOFTWARE.
22*/
23
24/* $Id: thread-m.h 30481 2007-12-05 21:46:59Z rfranz $
25   One out of _LIBC, USE_PTHREADS, USE_THR or USE_SPROC should be
26   defined, otherwise the token NO_THREADS and dummy implementations
27   of the macros will be defined.  */
28
29#ifndef _THREAD_M_H
30#define _THREAD_M_H
31
32#undef thread_atfork_static
33
34
35#undef NO_THREADS /* No threads, provide dummy macros */
36
37typedef int thread_id;
38
39/* The mutex functions used to do absolutely nothing, i.e. lock,
40   trylock and unlock would always just return 0.  However, even
41   without any concurrently active threads, a mutex can be used
42   legitimately as an `in use' flag.  To make the code that is
43   protected by a mutex async-signal safe, these macros would have to
44   be based on atomic test-and-set operations, for example. */
45#ifdef __OCTEON__
46typedef cvmx_spinlock_t mutex_t;
47#define MUTEX_INITIALIZER          CMVX_SPINLOCK_UNLOCKED_VAL
48#define mutex_init(m)              cvmx_spinlock_init(m)
49#define mutex_lock(m)              cvmx_spinlock_lock(m)
50#define mutex_trylock(m)           (cvmx_spinlock_trylock(m))
51#define mutex_unlock(m)            cvmx_spinlock_unlock(m)
52#else
53
54typedef int mutex_t;
55
56#define MUTEX_INITIALIZER          0
57#define mutex_init(m)              (*(m) = 0)
58#define mutex_lock(m)              ((*(m) = 1), 0)
59#define mutex_trylock(m)           (*(m) ? 1 : ((*(m) = 1), 0))
60#define mutex_unlock(m)            (*(m) = 0)
61#endif
62
63
64
65typedef void *tsd_key_t;
66#define tsd_key_create(key, destr) do {} while(0)
67#define tsd_setspecific(key, data) ((key) = (data))
68#define tsd_getspecific(key, vptr) (vptr = (key))
69
70#define thread_atfork(prepare, parent, child) do {} while(0)
71
72
73#endif /* !defined(_THREAD_M_H) */
74