src/rx/UKERNEL/rx_kmutex.h

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 /*
  11  * rx_kmutex.h - mutex and condition variable macros for kernel environment.
  12  *
  13  * User-space implementation.
  14  */
  15
  16 #ifndef _RX_KMUTEX_H_
  17 #define _RX_KMUTEX_H_
  18
  19 #define RX_ENABLE_LOCKS         1
  20
  21 #define afs_kmutex_t            usr_mutex_t
  22 #define afs_kcondvar_t          usr_cond_t
  23 #define MUTEX_INIT(A,B,C,D)     usr_mutex_init(A)
  24 #define MUTEX_ENTER(A)          usr_mutex_lock(A)
  25 #define MUTEX_TRYENTER(A)       usr_mutex_trylock(A)
  26 #define MUTEX_EXIT(A)           usr_mutex_unlock(A)
  27 #define MUTEX_DESTROY(A)        usr_mutex_destroy(A)
  28 #define MUTEX_ASSERT(A)
  29 #define CV_INIT(A,B,C,D)        usr_cond_init(A)
  30 #define CV_TIMEDWAIT(A,B,C)     usr_cond_timedwait(A,B,C)
  31 #define CV_SIGNAL(A)            usr_cond_signal(A)
  32 #define CV_BROADCAST(A)         usr_cond_broadcast(A)
  33 #define CV_DESTROY(A)           usr_cond_destroy(A)
  34 #define CV_WAIT(_cv, _lck)      { \
  35                                     int isGlockOwner = ISAFS_GLOCK(); \
  36                                     if (isGlockOwner) { \
  37                                         AFS_GUNLOCK(); \
  38                                     } \
  39                                     usr_cond_wait(_cv, _lck); \
  40                                     if (isGlockOwner) { \
  41                                         MUTEX_EXIT(_lck); \
  42                                         AFS_GLOCK(); \
  43                                         MUTEX_ENTER(_lck); \
  44                                     } \
  45                                 }
  46
  47 #define SPLVAR
  48 #define NETPRI
  49 #define USERPRI
  50
  51 #endif /* _RX_KMUTEX_H_ */