sysdeps/arm/nptl/bits/pthreadtypes.h

   1 /* Copyright (C) 2002-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _BITS_PTHREADTYPES_H
  19 #define _BITS_PTHREADTYPES_H    1
  20
  21 #include <endian.h>
  22
  23 #define __SIZEOF_PTHREAD_ATTR_T 36
  24 #define __SIZEOF_PTHREAD_MUTEX_T 24
  25 #define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  26 #define __SIZEOF_PTHREAD_COND_T 48
  27 #define __SIZEOF_PTHREAD_COND_COMPAT_T 12
  28 #define __SIZEOF_PTHREAD_CONDATTR_T 4
  29 #define __SIZEOF_PTHREAD_RWLOCK_T 32
  30 #define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  31 #define __SIZEOF_PTHREAD_BARRIER_T 20
  32 #define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  33
  34
  35 /* Thread identifiers.  The structure of the attribute type is not
  36    exposed on purpose.  */
  37 typedef unsigned long int pthread_t;
  38
  39
  40 union pthread_attr_t
  41 {
  42   char __size[__SIZEOF_PTHREAD_ATTR_T];
  43   long int __align;
  44 };
  45 #ifndef __have_pthread_attr_t
  46 typedef union pthread_attr_t pthread_attr_t;
  47 # define __have_pthread_attr_t  1
  48 #endif
  49
  50
  51 typedef struct __pthread_internal_slist
  52 {
  53   struct __pthread_internal_slist *__next;
  54 } __pthread_slist_t;
  55
  56
  57 /* Data structures for mutex handling.  The structure of the attribute
  58    type is not exposed on purpose.  */
  59 typedef union
  60 {
  61   struct __pthread_mutex_s
  62   {
  63     int __lock;
  64     unsigned int __count;
  65     int __owner;
  66     /* KIND must stay at this position in the structure to maintain
  67        binary compatibility with static initializers.  */
  68     int __kind;
  69     unsigned int __nusers;
  70     __extension__ union
  71     {
  72       int __spins;
  73       __pthread_slist_t __list;
  74     };
  75   } __data;
  76   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  77   long int __align;
  78 } pthread_mutex_t;
  79
  80 /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
  81 #define __PTHREAD_SPINS 0
  82
  83 typedef union
  84 {
  85   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  86   long int __align;
  87 } pthread_mutexattr_t;
  88
  89
  90 /* Data structure for conditional variable handling.  The structure of
  91    the attribute type is not exposed on purpose.  */
  92 typedef union
  93 {
  94   struct
  95   {
  96     __extension__ union
  97     {
  98       __extension__ unsigned long long int __wseq;
  99       struct {
 100         unsigned int __low;
 101         unsigned int __high;
 102       } __wseq32;
 103     };
 104     __extension__ union
 105     {
 106       __extension__ unsigned long long int __g1_start;
 107       struct {
 108         unsigned int __low;
 109         unsigned int __high;
 110       } __g1_start32;
 111     };
 112     unsigned int __g_refs[2];
 113     unsigned int __g_size[2];
 114     unsigned int __g1_orig_size;
 115     unsigned int __wrefs;
 116     unsigned int __g_signals[2];
 117   } __data;
 118   char __size[__SIZEOF_PTHREAD_COND_T];
 119   __extension__ long long int __align;
 120 } pthread_cond_t;
 121
 122 typedef union
 123 {
 124   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 125   long int __align;
 126 } pthread_condattr_t;
 127
 128
 129 /* Keys for thread-specific data */
 130 typedef unsigned int pthread_key_t;
 131
 132
 133 /* Once-only execution */
 134 typedef int pthread_once_t;
 135
 136
 137 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 138 /* Data structure for read-write lock variable handling.  The
 139    structure of the attribute type is not exposed on purpose.  */
 140 typedef union
 141 {
 142   struct
 143   {
 144     unsigned int __readers;
 145     unsigned int __writers;
 146     unsigned int __wrphase_futex;
 147     unsigned int __writers_futex;
 148     unsigned int __pad3;
 149     unsigned int __pad4;
 150 #if __BYTE_ORDER == __BIG_ENDIAN
 151     unsigned char __pad1;
 152     unsigned char __pad2;
 153     unsigned char __shared;
 154     /* FLAGS must stay at this position in the structure to maintain
 155        binary compatibility.  */
 156     unsigned char __flags;
 157 #else
 158     /* FLAGS must stay at this position in the structure to maintain
 159        binary compatibility.  */
 160     unsigned char __flags;
 161     unsigned char __shared;
 162     unsigned char __pad1;
 163     unsigned char __pad2;
 164 #endif
 165     int __cur_writer;
 166   } __data;
 167   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 168   long int __align;
 169 } pthread_rwlock_t;
 170
 171 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 172
 173 typedef union
 174 {
 175   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 176   long int __align;
 177 } pthread_rwlockattr_t;
 178 #endif
 179
 180
 181 #ifdef __USE_XOPEN2K
 182 /* POSIX spinlock data type.  */
 183 typedef volatile int pthread_spinlock_t;
 184
 185
 186 /* POSIX barriers data type.  The structure of the type is
 187    deliberately not exposed.  */
 188 typedef union
 189 {
 190   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 191   long int __align;
 192 } pthread_barrier_t;
 193
 194 typedef union
 195 {
 196   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 197   int __align;
 198 } pthread_barrierattr_t;
 199 #endif
 200
 201
 202 #endif  /* bits/pthreadtypes.h */