sysdeps/s390/nptl/bits/pthreadtypes.h

   1 /* Copyright (C) 2003-2015 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 <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 # ifdef ENABLE_LOCK_ELISION
  93     short __spins;
  94     short __elision;
  95     /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
  96 #  define __PTHREAD_SPINS               0, 0
  97 # else
  98     int __spins;
  99     /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
 100 #  define __PTHREAD_SPINS               0
 101 # endif
 102     __pthread_list_t __list;
 103 # define __PTHREAD_MUTEX_HAVE_PREV      1
 104 #else
 105     unsigned int __nusers;
 106     __extension__ union
 107     {
 108 # ifdef ENABLE_LOCK_ELISION
 109       struct
 110       {
 111         short __espins;
 112         short __elision;
 113       } _d;
 114 #  define __spins _d.__espins
 115 #  define __elision _d.__elision
 116     /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
 117 #  define __PTHREAD_SPINS               { 0, 0 }
 118 # else
 119       int __spins;
 120     /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
 121 #  define __PTHREAD_SPINS               0
 122 # endif
 123       __pthread_slist_t __list;
 124     };
 125 #endif
 126   } __data;
 127   char __size[__SIZEOF_PTHREAD_MUTEX_T];
 128   long int __align;
 129 } pthread_mutex_t;
 130
 131
 132 typedef union
 133 {
 134   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
 135   int __align;
 136 } pthread_mutexattr_t;
 137
 138
 139 /* Data structure for conditional variable handling.  The structure of
 140    the attribute type is not exposed on purpose.  */
 141 typedef union
 142 {
 143   struct
 144   {
 145     int __lock;
 146     unsigned int __futex;
 147     __extension__ unsigned long long int __total_seq;
 148     __extension__ unsigned long long int __wakeup_seq;
 149     __extension__ unsigned long long int __woken_seq;
 150     void *__mutex;
 151     unsigned int __nwaiters;
 152     unsigned int __broadcast_seq;
 153   } __data;
 154   char __size[__SIZEOF_PTHREAD_COND_T];
 155   __extension__ long long int __align;
 156 } pthread_cond_t;
 157
 158 typedef union
 159 {
 160   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 161   int __align;
 162 } pthread_condattr_t;
 163
 164
 165 /* Keys for thread-specific data */
 166 typedef unsigned int pthread_key_t;
 167
 168
 169 /* Once-only execution */
 170 typedef int pthread_once_t;
 171
 172
 173 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 174 /* Data structure for read-write lock variable handling.  The
 175    structure of the attribute type is not exposed on purpose.  */
 176 typedef union
 177 {
 178 # if __WORDSIZE == 64
 179   struct
 180   {
 181     int __lock;
 182     unsigned int __nr_readers;
 183     unsigned int __readers_wakeup;
 184     unsigned int __writer_wakeup;
 185     unsigned int __nr_readers_queued;
 186     unsigned int __nr_writers_queued;
 187     int __writer;
 188     int __shared;
 189     unsigned long int __pad1;
 190     unsigned long int __pad2;
 191     /* FLAGS must stay at this position in the structure to maintain
 192        binary compatibility.  */
 193     unsigned int __flags;
 194   } __data;
 195 # else
 196   struct
 197   {
 198     int __lock;
 199     unsigned int __nr_readers;
 200     unsigned int __readers_wakeup;
 201     unsigned int __writer_wakeup;
 202     unsigned int __nr_readers_queued;
 203     unsigned int __nr_writers_queued;
 204     unsigned char __pad1;
 205     unsigned char __pad2;
 206     unsigned char __shared;
 207     /* FLAGS must stay at this position in the structure to maintain
 208        binary compatibility.  */
 209     unsigned char __flags;
 210     int __writer;
 211   } __data;
 212 # endif
 213   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 214   long int __align;
 215 } pthread_rwlock_t;
 216
 217 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 218
 219 typedef union
 220 {
 221   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 222   long int __align;
 223 } pthread_rwlockattr_t;
 224 #endif
 225
 226
 227 #ifdef __USE_XOPEN2K
 228 /* POSIX spinlock data type.  */
 229 typedef volatile int pthread_spinlock_t;
 230
 231
 232 /* POSIX barriers data type.  The structure of the type is
 233    deliberately not exposed.  */
 234 typedef union
 235 {
 236   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 237   long int __align;
 238 } pthread_barrier_t;
 239
 240 typedef union
 241 {
 242   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 243   int __align;
 244 } pthread_barrierattr_t;
 245 #endif
 246
 247
 248 #endif  /* bits/pthreadtypes.h */