nptl/sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h

   1 /* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _BITS_PTHREADTYPES_H
  21 #define _BITS_PTHREADTYPES_H    1
  22
  23 #include <bits/wordsize.h>
  24
  25 #if __WORDSIZE == 64
  26 # define __SIZEOF_PTHREAD_ATTR_T 56
  27 # define __SIZEOF_PTHREAD_MUTEX_T 40
  28 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  29 # define __SIZEOF_PTHREAD_COND_T 48
  30 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  31 # define __SIZEOF_PTHREAD_RWLOCK_T 56
  32 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  33 # define __SIZEOF_PTHREAD_BARRIER_T 32
  34 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  35 #else
  36 # define __SIZEOF_PTHREAD_ATTR_T 36
  37 # define __SIZEOF_PTHREAD_MUTEX_T 24
  38 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  39 # define __SIZEOF_PTHREAD_COND_T 48
  40 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  41 # define __SIZEOF_PTHREAD_RWLOCK_T 32
  42 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  43 # define __SIZEOF_PTHREAD_BARRIER_T 20
  44 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  45 #endif
  46
  47
  48 /* Thread identifiers.  The structure of the attribute type is not
  49    exposed on purpose.  */
  50 typedef unsigned long int pthread_t;
  51
  52
  53 typedef union
  54 {
  55   char __size[__SIZEOF_PTHREAD_ATTR_T];
  56   long int __align;
  57 } pthread_attr_t;
  58
  59
  60 /* Data structures for mutex handling.  The structure of the attribute
  61    type is not exposed on purpose.  */
  62 typedef union
  63 {
  64   struct
  65   {
  66     int __lock;
  67     unsigned int __count;
  68     int __owner;
  69 #if __WORDSIZE == 64
  70     unsigned int __nusers;
  71 #endif
  72     /* KIND must stay at this position in the structure to maintain
  73        binary compatibility.  */
  74     int __kind;
  75 #if __WORDSIZE != 64
  76     unsigned int __nusers;
  77 #endif
  78     int __spins;
  79   } __data;
  80   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  81   long int __align;
  82 } pthread_mutex_t;
  83
  84 typedef union
  85 {
  86   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  87   int __align;
  88 } pthread_mutexattr_t;
  89
  90
  91 /* Data structure for conditional variable handling.  The structure of
  92    the attribute type is not exposed on purpose.  */
  93 typedef union
  94 {
  95   struct
  96   {
  97     int __lock;
  98     unsigned int __futex;
  99     __extension__ unsigned long long int __total_seq;
 100     __extension__ unsigned long long int __wakeup_seq;
 101     __extension__ unsigned long long int __woken_seq;
 102     void *__mutex;
 103     unsigned int __nwaiters;
 104     unsigned int __broadcast_seq;
 105   } __data;
 106   char __size[__SIZEOF_PTHREAD_COND_T];
 107   __extension__ long long int __align;
 108 } pthread_cond_t;
 109
 110 typedef union
 111 {
 112   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 113   int __align;
 114 } pthread_condattr_t;
 115
 116
 117 /* Keys for thread-specific data */
 118 typedef unsigned int pthread_key_t;
 119
 120
 121 /* Once-only execution */
 122 typedef int pthread_once_t;
 123
 124
 125 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 126 /* Data structure for read-write lock variable handling.  The
 127    structure of the attribute type is not exposed on purpose.  */
 128 typedef union
 129 {
 130 # if __WORDSIZE == 64
 131   struct
 132   {
 133     int __lock;
 134     unsigned int __nr_readers;
 135     unsigned int __readers_wakeup;
 136     unsigned int __writer_wakeup;
 137     unsigned int __nr_readers_queued;
 138     unsigned int __nr_writers_queued;
 139     int __writer;
 140     int __pad1;
 141     unsigned long int __pad2;
 142     unsigned long int __pad3;
 143     /* FLAGS must stay at this position in the structure to maintain
 144        binary compatibility.  */
 145     unsigned int __flags;
 146   } __data;
 147 # else
 148   struct
 149   {
 150     int __lock;
 151     unsigned int __nr_readers;
 152     unsigned int __readers_wakeup;
 153     unsigned int __writer_wakeup;
 154     unsigned int __nr_readers_queued;
 155     unsigned int __nr_writers_queued;
 156     /* FLAGS must stay at this position in the structure to maintain
 157        binary compatibility.  */
 158     unsigned int __flags;
 159     int __writer;
 160   } __data;
 161 # endif
 162   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 163   long int __align;
 164 } pthread_rwlock_t;
 165
 166 typedef union
 167 {
 168   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 169   long int __align;
 170 } pthread_rwlockattr_t;
 171 #endif
 172
 173
 174 #ifdef __USE_XOPEN2K
 175 /* POSIX spinlock data type.  */
 176 typedef volatile int pthread_spinlock_t;
 177
 178
 179 /* POSIX barriers data type.  The structure of the type is
 180    deliberately not exposed.  */
 181 typedef union
 182 {
 183   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 184   long int __align;
 185 } pthread_barrier_t;
 186
 187 typedef union
 188 {
 189   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 190   int __align;
 191 } pthread_barrierattr_t;
 192 #endif
 193
 194
 195 #endif  /* bits/pthreadtypes.h */