sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h

   1 /* Machine-specific pthread type layouts.  PowerPC version.
   2    Copyright (C) 2003-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _BITS_PTHREADTYPES_H
  20 #define _BITS_PTHREADTYPES_H    1
  21
  22 #include <bits/wordsize.h>
  23
  24 #if __WORDSIZE == 64
  25 # define __SIZEOF_PTHREAD_ATTR_T 56
  26 # define __SIZEOF_PTHREAD_MUTEX_T 40
  27 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  28 # define __SIZEOF_PTHREAD_COND_T 48
  29 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  30 # define __SIZEOF_PTHREAD_RWLOCK_T 56
  31 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  32 # define __SIZEOF_PTHREAD_BARRIER_T 32
  33 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  34 #else
  35 # define __SIZEOF_PTHREAD_ATTR_T 36
  36 # define __SIZEOF_PTHREAD_MUTEX_T 24
  37 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  38 # define __SIZEOF_PTHREAD_COND_T 48
  39 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  40 # define __SIZEOF_PTHREAD_RWLOCK_T 32
  41 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  42 # define __SIZEOF_PTHREAD_BARRIER_T 20
  43 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  44 #endif
  45
  46
  47 /* Thread identifiers.  The structure of the attribute type is
  48    deliberately not exposed.  */
  49 typedef unsigned long int pthread_t;
  50
  51
  52 union pthread_attr_t
  53 {
  54   char __size[__SIZEOF_PTHREAD_ATTR_T];
  55   long int __align;
  56 };
  57 #ifndef __have_pthread_attr_t
  58 typedef union pthread_attr_t pthread_attr_t;
  59 # define __have_pthread_attr_t  1
  60 #endif
  61
  62
  63 #if __WORDSIZE == 64
  64 typedef struct __pthread_internal_list
  65 {
  66   struct __pthread_internal_list *__prev;
  67   struct __pthread_internal_list *__next;
  68 } __pthread_list_t;
  69 #else
  70 typedef struct __pthread_internal_slist
  71 {
  72   struct __pthread_internal_slist *__next;
  73 } __pthread_slist_t;
  74 #endif
  75
  76
  77 /* Data structures for mutex handling.  The structure of the attribute
  78    type is deliberately not exposed.  */
  79 typedef union
  80 {
  81   struct __pthread_mutex_s
  82   {
  83     int __lock;
  84     unsigned int __count;
  85     int __owner;
  86 #if __WORDSIZE == 64
  87     unsigned int __nusers;
  88 #endif
  89     /* KIND must stay at this position in the structure to maintain
  90        binary compatibility.  */
  91     int __kind;
  92 #if __WORDSIZE == 64
  93     short __spins;
  94     short __elision;
  95     __pthread_list_t __list;
  96 # define __PTHREAD_MUTEX_HAVE_PREV      1
  97 # define __PTHREAD_SPINS             0, 0
  98 #else
  99     unsigned int __nusers;
 100     __extension__ union
 101     {
 102       struct
 103       {
 104         short __espins;
 105         short __elision;
 106 # define __spins __elision_data.__espins
 107 # define __elision __elision_data.__elision
 108 # define __PTHREAD_SPINS         { 0, 0 }
 109       } __elision_data;
 110       __pthread_slist_t __list;
 111     };
 112 #endif
 113   } __data;
 114   char __size[__SIZEOF_PTHREAD_MUTEX_T];
 115   long int __align;
 116 } pthread_mutex_t;
 117
 118 typedef union
 119 {
 120   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
 121   int __align;
 122 } pthread_mutexattr_t;
 123
 124
 125 /* Data structure for conditional variable handling.  The structure of
 126    the attribute type is deliberately not exposed.  */
 127 typedef union
 128 {
 129   struct
 130   {
 131     int __lock;
 132     unsigned int __futex;
 133     __extension__ unsigned long long int __total_seq;
 134     __extension__ unsigned long long int __wakeup_seq;
 135     __extension__ unsigned long long int __woken_seq;
 136     void *__mutex;
 137     unsigned int __nwaiters;
 138     unsigned int __broadcast_seq;
 139   } __data;
 140   char __size[__SIZEOF_PTHREAD_COND_T];
 141   __extension__ long long int __align;
 142 } pthread_cond_t;
 143
 144 typedef union
 145 {
 146   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 147   int __align;
 148 } pthread_condattr_t;
 149
 150
 151 /* Keys for thread-specific data */
 152 typedef unsigned int pthread_key_t;
 153
 154
 155 /* Once-only execution */
 156 typedef int pthread_once_t;
 157
 158
 159 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 160 /* Data structure for read-write lock variable handling.  The
 161    structure of the attribute type is deliberately not exposed.  */
 162 typedef union
 163 {
 164 # if __WORDSIZE == 64
 165   struct
 166   {
 167     int __lock;
 168     unsigned int __nr_readers;
 169     unsigned int __readers_wakeup;
 170     unsigned int __writer_wakeup;
 171     unsigned int __nr_readers_queued;
 172     unsigned int __nr_writers_queued;
 173     int __writer;
 174     int __shared;
 175     unsigned char __rwelision;
 176     unsigned char __pad1[7];
 177     unsigned long int __pad2;
 178     /* FLAGS must stay at this position in the structure to maintain
 179        binary compatibility.  */
 180     unsigned int __flags;
 181 # define __PTHREAD_RWLOCK_ELISION_EXTRA 0, {0, 0, 0, 0, 0, 0, 0 }
 182   } __data;
 183 # else
 184   struct
 185   {
 186     int __lock;
 187     unsigned int __nr_readers;
 188     unsigned int __readers_wakeup;
 189     unsigned int __writer_wakeup;
 190     unsigned int __nr_readers_queued;
 191     unsigned int __nr_writers_queued;
 192     unsigned char __rwelision;
 193     unsigned char __pad2;
 194     unsigned char __shared;
 195     /* FLAGS must stay at this position in the structure to maintain
 196        binary compatibility.  */
 197     unsigned char __flags;
 198     int __writer;
 199 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 200   } __data;
 201 # endif
 202   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 203   long int __align;
 204 } pthread_rwlock_t;
 205
 206
 207 typedef union
 208 {
 209   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 210   long int __align;
 211 } pthread_rwlockattr_t;
 212 #endif
 213
 214
 215 #ifdef __USE_XOPEN2K
 216 /* POSIX spinlock data type.  */
 217 typedef volatile int pthread_spinlock_t;
 218
 219
 220 /* POSIX barriers data type.  The structure of the type is
 221    deliberately not exposed.  */
 222 typedef union
 223 {
 224   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 225   long int __align;
 226 } pthread_barrier_t;
 227
 228 typedef union
 229 {
 230   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 231   int __align;
 232 } pthread_barrierattr_t;
 233 #endif
 234
 235
 236 #endif  /* bits/pthreadtypes.h */