arch/x86/include/sys/synch32.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #ifndef _SYS_SYNCH32_H
  28 #define _SYS_SYNCH32_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 /* special defines for LWP mutexes */
  35 #define mutex_flag              flags.flag1
  36 #define mutex_ceiling           flags.ceiling
  37 #define mutex_type              flags.mbcp_type_un.mtype_rcount.count_type1
  38 #define mutex_rcount            flags.mbcp_type_un.mtype_rcount.count_type2
  39 #define mutex_magic             flags.magic
  40 #define mutex_owner             data
  41 /* used to atomically operate on whole word via cas or swap instruction */
  42 #define mutex_lockword          lock.lock32.lockword
  43 /* this requires atomic_cas_64 */
  44 #define mutex_lockword64        lock.owner64
  45 /* these are bytes */
  46 #define mutex_lockw             lock.lock64.pad[7]
  47 #define mutex_waiters           lock.lock64.pad[6]
  48 #define mutex_spinners          lock.lock64.pad[5]
  49
  50 /* process-shared lock owner pid */
  51 #define mutex_ownerpid          lock.lock32.ownerpid
  52
  53 /* Max. recusrion count for recursive mutexes */
  54 #define RECURSION_MAX           255
  55
  56 /* special defines for LWP condition variables */
  57 #define cond_type               flags.type
  58 #define cond_magic              flags.magic
  59 #define cond_clockid            flags.flag[1]
  60 #define cond_waiters_user       flags.flag[2]
  61 #define cond_waiters_kernel     flags.flag[3]
  62
  63 /* special defines for LWP semaphores */
  64 #define sema_count              count
  65 #define sema_type               type
  66 #define sema_waiters            flags[7]
  67
  68 /* special defines for LWP rwlocks */
  69 #define rwlock_readers          readers
  70 #define rwlock_type             type
  71 #define rwlock_magic            magic
  72 #define rwlock_owner            readercv.data
  73 #define rwlock_ownerpid         writercv.data
  74
  75 #define URW_HAS_WAITERS         0x80000000
  76 #define URW_WRITE_LOCKED        0x40000000
  77 #define URW_READERS_MASK        0x3fffffff
  78
  79 #ifdef  __cplusplus
  80 }
  81 #endif
  82
  83 #endif /* _SYS_SYNCH32_H */