nptl/sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h

   1 /* Copyright (C) 2003-2014 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 <bits/wordsize.h>
  22
  23 #if __WORDSIZE == 64
  24 # define __SIZEOF_PTHREAD_ATTR_T 56
  25 # define __SIZEOF_PTHREAD_MUTEX_T 40
  26 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  27 # define __SIZEOF_PTHREAD_COND_T 48
  28 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  29 # define __SIZEOF_PTHREAD_RWLOCK_T 56
  30 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  31 # define __SIZEOF_PTHREAD_BARRIER_T 32
  32 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  33 #else
  34 # define __SIZEOF_PTHREAD_ATTR_T 36
  35 # define __SIZEOF_PTHREAD_MUTEX_T 24
  36 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  37 # define __SIZEOF_PTHREAD_COND_T 48
  38 # define __SIZEOF_PTHREAD_CONDATTR_T 4
  39 # define __SIZEOF_PTHREAD_RWLOCK_T 32
  40 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  41 # define __SIZEOF_PTHREAD_BARRIER_T 20
  42 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  43 #endif
  44
  45
  46 /* Thread identifiers.  The structure of the attribute type is not
  47    exposed on purpose.  */
  48 typedef unsigned long int pthread_t;
  49
  50
  51 union pthread_attr_t
  52 {
  53   char __size[__SIZEOF_PTHREAD_ATTR_T];
  54   long int __align;
  55 };
  56 #ifndef __have_pthread_attr_t
  57 typedef union pthread_attr_t pthread_attr_t;
  58 # define __have_pthread_attr_t  1
  59 #endif
  60
  61
  62 #if __WORDSIZE == 64
  63 typedef struct __pthread_internal_list
  64 {
  65   struct __pthread_internal_list *__prev;
  66   struct __pthread_internal_list *__next;
  67 } __pthread_list_t;
  68 #else
  69 typedef struct __pthread_internal_slist
  70 {
  71   struct __pthread_internal_slist *__next;
  72 } __pthread_slist_t;
  73 #endif
  74
  75
  76 /* Data structures for mutex handling.  The structure of the attribute
  77    type is not exposed on purpose.  */
  78 typedef union
  79 {
  80   struct __pthread_mutex_s
  81   {
  82     int __lock;
  83     unsigned int __count;
  84     int __owner;
  85 #if __WORDSIZE == 64
  86     unsigned int __nusers;
  87 #endif
  88     /* KIND must stay at this position in the structure to maintain
  89        binary compatibility.  */
  90     int __kind;
  91 #if __WORDSIZE == 64
  92     int __spins;
  93     __pthread_list_t __list;
  94 # define __PTHREAD_MUTEX_HAVE_PREV      1
  95 #else
  96     unsigned int __nusers;
  97     __extension__ union
  98     {
  99       int __spins;
 100       __pthread_slist_t __list;
 101     };
 102 #endif
 103   } __data;
 104   char __size[__SIZEOF_PTHREAD_MUTEX_T];
 105   long int __align;
 106 } pthread_mutex_t;
 107
 108 typedef union
 109 {
 110   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
 111   int __align;
 112 } pthread_mutexattr_t;
 113
 114
 115 /* Data structure for conditional variable handling.  The structure of
 116    the attribute type is not exposed on purpose.  */
 117 typedef union
 118 {
 119   struct
 120   {
 121     int __lock;
 122     unsigned int __futex;
 123     __extension__ unsigned long long int __total_seq;
 124     __extension__ unsigned long long int __wakeup_seq;
 125     __extension__ unsigned long long int __woken_seq;
 126     void *__mutex;
 127     unsigned int __nwaiters;
 128     unsigned int __broadcast_seq;
 129   } __data;
 130   char __size[__SIZEOF_PTHREAD_COND_T];
 131   __extension__ long long int __align;
 132 } pthread_cond_t;
 133
 134 typedef union
 135 {
 136   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 137   int __align;
 138 } pthread_condattr_t;
 139
 140
 141 /* Keys for thread-specific data */
 142 typedef unsigned int pthread_key_t;
 143
 144
 145 /* Once-only execution */
 146 typedef int pthread_once_t;
 147
 148
 149 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 150 /* Data structure for read-write lock variable handling.  The
 151    structure of the attribute type is not exposed on purpose.  */
 152 typedef union
 153 {
 154 # if __WORDSIZE == 64
 155   struct
 156   {
 157     int __lock;
 158     unsigned int __nr_readers;
 159     unsigned int __readers_wakeup;
 160     unsigned int __writer_wakeup;
 161     unsigned int __nr_readers_queued;
 162     unsigned int __nr_writers_queued;
 163     int __writer;
 164     int __shared;
 165     unsigned long int __pad1;
 166     unsigned long int __pad2;
 167     /* FLAGS must stay at this position in the structure to maintain
 168        binary compatibility.  */
 169     unsigned int __flags;
 170   } __data;
 171 # else
 172   struct
 173   {
 174     int __lock;
 175     unsigned int __nr_readers;
 176     unsigned int __readers_wakeup;
 177     unsigned int __writer_wakeup;
 178     unsigned int __nr_readers_queued;
 179     unsigned int __nr_writers_queued;
 180     unsigned char __pad1;
 181     unsigned char __pad2;
 182     unsigned char __shared;
 183     /* FLAGS must stay at this position in the structure to maintain
 184        binary compatibility.  */
 185     unsigned char __flags;
 186     int __writer;
 187   } __data;
 188 # endif
 189   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 190   long int __align;
 191 } pthread_rwlock_t;
 192
 193 typedef union
 194 {
 195   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 196   long int __align;
 197 } pthread_rwlockattr_t;
 198 #endif
 199
 200
 201 #ifdef __USE_XOPEN2K
 202 /* POSIX spinlock data type.  */
 203 typedef volatile int pthread_spinlock_t;
 204
 205
 206 /* POSIX barriers data type.  The structure of the type is
 207    deliberately not exposed.  */
 208 typedef union
 209 {
 210   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 211   long int __align;
 212 } pthread_barrier_t;
 213
 214 typedef union
 215 {
 216   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 217   int __align;
 218 } pthread_barrierattr_t;
 219 #endif
 220
 221
 222 #endif  /* bits/pthreadtypes.h */