src/lwp/preempt.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 *                                                                   *
  12 *       Information Technology Center                               *
  13 *       Carnegie-Mellon University                                  *
  14 *                                                                   *
  15 \*******************************************************************/
  16
  17 #if defined( _WIN32)
  18 #define PRE_InitPreempt(A)
  19 #endif
  20
  21 #if defined( _WIN32) || defined(AFS_LINUX20_ENV)
  22 /* preemption not implemented for win32. Use threads instead. */
  23 #define PRE_PreemptMe()
  24 #define PRE_BeginCritical()
  25 #define PRE_EndCritical()
  26 #else
  27 #define PRE_PreemptMe()         lwp_cpptr->level = 0
  28 #define PRE_BeginCritical()     lwp_cpptr->level++
  29 #define PRE_EndCritical()       lwp_cpptr->level--
  30 #endif
  31
  32 #define DEFAULTSLICE    10