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

   1 /* Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
   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 not
  48    exposed on purpose.  */
  49 typedef unsigned long int pthread_t;
  50
  51
  52 typedef union
  53 {
  54   char __size[__SIZEOF_PTHREAD_ATTR_T];
  55   long int __align;
  56 } pthread_attr_t;
  57
  58
  59 #if __WORDSIZE == 64
  60 typedef struct __pthread_internal_list
  61 {
  62   struct __pthread_internal_list *__prev;
  63   struct __pthread_internal_list *__next;
  64 } __pthread_list_t;
  65 #else
  66 typedef struct __pthread_internal_slist
  67 {
  68   struct __pthread_internal_slist *__next;
  69 } __pthread_slist_t;
  70 #endif
  71
  72
  73 /* Data structures for mutex handling.  The structure of the attribute
  74    type is not exposed on purpose.  */
  75 typedef union
  76 {
  77   struct __pthread_mutex_s
  78   {
  79     int __lock;
  80     unsigned int __count;
  81     int __owner;
  82 #if __WORDSIZE == 64
  83     unsigned int __nusers;
  84 #endif
  85     /* KIND must stay at this position in the structure to maintain
  86        binary compatibility.  */
  87     int __kind;
  88 #if __WORDSIZE == 64
  89     int __spins;
  90     __pthread_list_t __list;
  91 # define __PTHREAD_MUTEX_HAVE_PREV      1
  92 #else
  93     unsigned int __nusers;
  94     __extension__ union
  95     {
  96       int __spins;
  97       __pthread_slist_t __list;
  98     };
  99 #endif
 100   } __data;
 101   char __size[__SIZEOF_PTHREAD_MUTEX_T];
 102   long int __align;
 103 } pthread_mutex_t;
 104
 105 typedef union
 106 {
 107   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
 108   int __align;
 109 } pthread_mutexattr_t;
 110
 111
 112 /* Data structure for conditional variable handling.  The structure of
 113    the attribute type is not exposed on purpose.  */
 114 typedef union
 115 {
 116   struct
 117   {
 118     int __lock;
 119     unsigned int __futex;
 120     __extension__ unsigned long long int __total_seq;
 121     __extension__ unsigned long long int __wakeup_seq;
 122     __extension__ unsigned long long int __woken_seq;
 123     void *__mutex;
 124     unsigned int __nwaiters;
 125     unsigned int __broadcast_seq;
 126   } __data;
 127   char __size[__SIZEOF_PTHREAD_COND_T];
 128   __extension__ long long int __align;
 129 } pthread_cond_t;
 130
 131 typedef union
 132 {
 133   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 134   int __align;
 135 } pthread_condattr_t;
 136
 137
 138 /* Keys for thread-specific data */
 139 typedef unsigned int pthread_key_t;
 140
 141
 142 /* Once-only execution */
 143 typedef int pthread_once_t;
 144
 145
 146 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 147 /* Data structure for read-write lock variable handling.  The
 148    structure of the attribute type is not exposed on purpose.  */
 149 typedef union
 150 {
 151 # if __WORDSIZE == 64
 152   struct
 153   {
 154     int __lock;
 155     unsigned int __nr_readers;
 156     unsigned int __readers_wakeup;
 157     unsigned int __writer_wakeup;
 158     unsigned int __nr_readers_queued;
 159     unsigned int __nr_writers_queued;
 160     int __writer;
 161     int __shared;
 162     unsigned long int __pad1;
 163     unsigned long int __pad2;
 164     /* FLAGS must stay at this position in the structure to maintain
 165        binary compatibility.  */
 166     unsigned int __flags;
 167   } __data;
 168 # else
 169   struct
 170   {
 171     int __lock;
 172     unsigned int __nr_readers;
 173     unsigned int __readers_wakeup;
 174     unsigned int __writer_wakeup;
 175     unsigned int __nr_readers_queued;
 176     unsigned int __nr_writers_queued;
 177     unsigned char __pad1;
 178     unsigned char __pad2;
 179     unsigned char __shared;
 180     /* FLAGS must stay at this position in the structure to maintain
 181        binary compatibility.  */
 182     unsigned char __flags;
 183     int __writer;
 184   } __data;
 185 # endif
 186   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 187   long int __align;
 188 } pthread_rwlock_t;
 189
 190 typedef union
 191 {
 192   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 193   long int __align;
 194 } pthread_rwlockattr_t;
 195 #endif
 196
 197
 198 #ifdef __USE_XOPEN2K
 199 /* POSIX spinlock data type.  */
 200 typedef volatile int pthread_spinlock_t;
 201
 202
 203 /* POSIX barriers data type.  The structure of the type is
 204    deliberately not exposed.  */
 205 typedef union
 206 {
 207   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 208   long int __align;
 209 } pthread_barrier_t;
 210
 211 typedef union
 212 {
 213   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 214   int __align;
 215 } pthread_barrierattr_t;
 216 #endif
 217
 218
 219 #endif  /* bits/pthreadtypes.h */