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

   1 /* Copyright (C) 2002,2003,2004,2005,2006,2007 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 #if __WORDSIZE == 64
  61 typedef struct __pthread_internal_list
  62 {
  63   struct __pthread_internal_list *__prev;
  64   struct __pthread_internal_list *__next;
  65 } __pthread_list_t;
  66 #else
  67 typedef struct __pthread_internal_slist
  68 {
  69   struct __pthread_internal_slist *__next;
  70 } __pthread_slist_t;
  71 #endif
  72
  73
  74 /* Data structures for mutex handling.  The structure of the attribute
  75    type is not exposed on purpose.  */
  76 typedef union
  77 {
  78   struct __pthread_mutex_s
  79   {
  80     int __lock;
  81     unsigned int __count;
  82     int __owner;
  83 #if __WORDSIZE == 64
  84     unsigned int __nusers;
  85 #endif
  86     /* KIND must stay at this position in the structure to maintain
  87        binary compatibility.  */
  88     int __kind;
  89 #if __WORDSIZE == 64
  90     int __spins;
  91     __pthread_list_t __list;
  92 # define __PTHREAD_MUTEX_HAVE_PREV      1
  93 #else
  94     unsigned int __nusers;
  95     __extension__ union
  96     {
  97       int __spins;
  98       __pthread_slist_t __list;
  99     };
 100 #endif
 101   } __data;
 102   char __size[__SIZEOF_PTHREAD_MUTEX_T];
 103   long int __align;
 104 } pthread_mutex_t;
 105
 106 typedef union
 107 {
 108   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
 109   int __align;
 110 } pthread_mutexattr_t;
 111
 112
 113 /* Data structure for conditional variable handling.  The structure of
 114    the attribute type is not exposed on purpose.  */
 115 typedef union
 116 {
 117   struct
 118   {
 119     int __lock;
 120     unsigned int __futex;
 121     __extension__ unsigned long long int __total_seq;
 122     __extension__ unsigned long long int __wakeup_seq;
 123     __extension__ unsigned long long int __woken_seq;
 124     void *__mutex;
 125     unsigned int __nwaiters;
 126     unsigned int __broadcast_seq;
 127   } __data;
 128   char __size[__SIZEOF_PTHREAD_COND_T];
 129   __extension__ long long int __align;
 130 } pthread_cond_t;
 131
 132 typedef union
 133 {
 134   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 135   int __align;
 136 } pthread_condattr_t;
 137
 138
 139 /* Keys for thread-specific data */
 140 typedef unsigned int pthread_key_t;
 141
 142
 143 /* Once-only execution */
 144 typedef int pthread_once_t;
 145
 146
 147 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 148 /* Data structure for read-write lock variable handling.  The
 149    structure of the attribute type is not exposed on purpose.  */
 150 typedef union
 151 {
 152 # if __WORDSIZE == 64
 153   struct
 154   {
 155     int __lock;
 156     unsigned int __nr_readers;
 157     unsigned int __readers_wakeup;
 158     unsigned int __writer_wakeup;
 159     unsigned int __nr_readers_queued;
 160     unsigned int __nr_writers_queued;
 161     int __writer;
 162     int __shared;
 163     unsigned long int __pad1;
 164     unsigned long int __pad2;
 165     /* FLAGS must stay at this position in the structure to maintain
 166        binary compatibility.  */
 167     unsigned int __flags;
 168   } __data;
 169 # else
 170   struct
 171   {
 172     int __lock;
 173     unsigned int __nr_readers;
 174     unsigned int __readers_wakeup;
 175     unsigned int __writer_wakeup;
 176     unsigned int __nr_readers_queued;
 177     unsigned int __nr_writers_queued;
 178     /* FLAGS must stay at this position in the structure to maintain
 179        binary compatibility.  */
 180     unsigned char __flags;
 181     unsigned char __shared;
 182     unsigned char __pad1;
 183     unsigned char __pad2;
 184     int __writer;
 185   } __data;
 186 # endif
 187   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 188   long int __align;
 189 } pthread_rwlock_t;
 190
 191 typedef union
 192 {
 193   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 194   long int __align;
 195 } pthread_rwlockattr_t;
 196 #endif
 197
 198
 199 #ifdef __USE_XOPEN2K
 200 /* POSIX spinlock data type.  */
 201 typedef volatile int pthread_spinlock_t;
 202
 203
 204 /* POSIX barriers data type.  The structure of the type is
 205    deliberately not exposed.  */
 206 typedef union
 207 {
 208   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 209   long int __align;
 210 } pthread_barrier_t;
 211
 212 typedef union
 213 {
 214   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 215   int __align;
 216 } pthread_barrierattr_t;
 217 #endif
 218
 219
 220 #if __WORDSIZE == 32
 221 /* Extra attributes for the cleanup functions.  */
 222 # define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
 223 #endif
 224
 225 #endif  /* bits/pthreadtypes.h */