sysdeps/arm/nptl/bits/pthreadtypes.h

   1 /* Copyright (C) 2002-2015 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.  */
  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     int __lock;
  97     unsigned int __futex;
  98     __extension__ unsigned long long int __total_seq;
  99     __extension__ unsigned long long int __wakeup_seq;
 100     __extension__ unsigned long long int __woken_seq;
 101     void *__mutex;
 102     unsigned int __nwaiters;
 103     unsigned int __broadcast_seq;
 104   } __data;
 105   char __size[__SIZEOF_PTHREAD_COND_T];
 106   __extension__ long long int __align;
 107 } pthread_cond_t;
 108
 109 typedef union
 110 {
 111   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 112   long int __align;
 113 } pthread_condattr_t;
 114
 115
 116 /* Keys for thread-specific data */
 117 typedef unsigned int pthread_key_t;
 118
 119
 120 /* Once-only execution */
 121 typedef int pthread_once_t;
 122
 123
 124 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 125 /* Data structure for read-write lock variable handling.  The
 126    structure of the attribute type is not exposed on purpose.  */
 127 typedef union
 128 {
 129   struct
 130   {
 131     int __lock;
 132     unsigned int __nr_readers;
 133     unsigned int __readers_wakeup;
 134     unsigned int __writer_wakeup;
 135     unsigned int __nr_readers_queued;
 136     unsigned int __nr_writers_queued;
 137 #if __BYTE_ORDER == __BIG_ENDIAN
 138     unsigned char __pad1;
 139     unsigned char __pad2;
 140     unsigned char __shared;
 141     /* FLAGS must stay at this position in the structure to maintain
 142        binary compatibility.  */
 143     unsigned char __flags;
 144 #else
 145     /* FLAGS must stay at this position in the structure to maintain
 146        binary compatibility.  */
 147     unsigned char __flags;
 148     unsigned char __shared;
 149     unsigned char __pad1;
 150     unsigned char __pad2;
 151 #endif
 152     int __writer;
 153   } __data;
 154   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 155   long int __align;
 156 } pthread_rwlock_t;
 157
 158 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 159
 160 typedef union
 161 {
 162   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 163   long int __align;
 164 } pthread_rwlockattr_t;
 165 #endif
 166
 167
 168 #ifdef __USE_XOPEN2K
 169 /* POSIX spinlock data type.  */
 170 typedef volatile int pthread_spinlock_t;
 171
 172
 173 /* POSIX barriers data type.  The structure of the type is
 174    deliberately not exposed.  */
 175 typedef union
 176 {
 177   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 178   long int __align;
 179 } pthread_barrier_t;
 180
 181 typedef union
 182 {
 183   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 184   int __align;
 185 } pthread_barrierattr_t;
 186 #endif
 187
 188
 189 #endif  /* bits/pthreadtypes.h */