sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h

   1 /* Machine-specific pthread type layouts.  Alpha version.
   2    Copyright (C) 2003-2016 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   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 #define __SIZEOF_PTHREAD_ATTR_T         56
  23 #define __SIZEOF_PTHREAD_MUTEX_T        40
  24 #define __SIZEOF_PTHREAD_MUTEXATTR_T    4
  25 #define __SIZEOF_PTHREAD_COND_T         48
  26 #define __SIZEOF_PTHREAD_CONDATTR_T     4
  27 #define __SIZEOF_PTHREAD_RWLOCK_T       56
  28 #define __SIZEOF_PTHREAD_RWLOCKATTR_T   8
  29 #define __SIZEOF_PTHREAD_BARRIER_T      32
  30 #define __SIZEOF_PTHREAD_BARRIERATTR_T  4
  31
  32
  33 /* Thread identifiers.  The structure of the attribute type is
  34    deliberately not exposed.  */
  35 typedef unsigned long int pthread_t;
  36
  37
  38 union pthread_attr_t
  39 {
  40   char __size[__SIZEOF_PTHREAD_ATTR_T];
  41   long int __align;
  42 };
  43 #ifndef __have_pthread_attr_t
  44 typedef union pthread_attr_t pthread_attr_t;
  45 # define __have_pthread_attr_t  1
  46 #endif
  47
  48 typedef struct __pthread_internal_list
  49 {
  50   struct __pthread_internal_list *__prev;
  51   struct __pthread_internal_list *__next;
  52 } __pthread_list_t;
  53
  54
  55 /* Data structures for mutex handling.  The structure of the attribute
  56    type is deliberately not exposed.  */
  57 typedef union
  58 {
  59   struct __pthread_mutex_s
  60   {
  61     int __lock;
  62     unsigned int __count;
  63     int __owner;
  64     unsigned int __nusers;
  65     /* KIND must stay at this position in the structure to maintain
  66        binary compatibility.  */
  67     int __kind;
  68     int __spins;
  69     __pthread_list_t __list;
  70 #define __PTHREAD_MUTEX_HAVE_PREV       1
  71   } __data;
  72   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  73   long int __align;
  74 } pthread_mutex_t;
  75
  76 /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
  77 #define __PTHREAD_SPINS 0
  78
  79 typedef union
  80 {
  81   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  82   int __align;
  83 } pthread_mutexattr_t;
  84
  85
  86 /* Data structure for conditional variable handling.  The structure of
  87    the attribute type is deliberately not exposed.  */
  88 typedef union
  89 {
  90   struct
  91   {
  92     int __lock;
  93     unsigned int __futex;
  94     __extension__ unsigned long long int __total_seq;
  95     __extension__ unsigned long long int __wakeup_seq;
  96     __extension__ unsigned long long int __woken_seq;
  97     void *__mutex;
  98     unsigned int __nwaiters;
  99     unsigned int __broadcast_seq;
 100   } __data;
 101   char __size[__SIZEOF_PTHREAD_COND_T];
 102   __extension__ long long int __align;
 103 } pthread_cond_t;
 104
 105 typedef union
 106 {
 107   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 108   int __align;
 109 } pthread_condattr_t;
 110
 111
 112 /* Keys for thread-specific data */
 113 typedef unsigned int pthread_key_t;
 114
 115
 116 /* Once-only execution */
 117 typedef int pthread_once_t;
 118
 119
 120 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 121 /* Data structure for read-write lock variable handling.  The
 122    structure of the attribute type is deliberately not exposed.  */
 123 typedef union
 124 {
 125   struct
 126   {
 127     int __lock;
 128     unsigned int __nr_readers;
 129     unsigned int __readers_wakeup;
 130     unsigned int __writer_wakeup;
 131     unsigned int __nr_readers_queued;
 132     unsigned int __nr_writers_queued;
 133     int __writer;
 134     int __shared;
 135     unsigned long int __pad1;
 136     unsigned long int __pad2;
 137     /* FLAGS must stay at this position in the structure to maintain
 138        binary compatibility.  */
 139     unsigned int __flags;
 140   } __data;
 141   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 142   long int __align;
 143 } pthread_rwlock_t;
 144
 145 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 146
 147 typedef union
 148 {
 149   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 150   long int __align;
 151 } pthread_rwlockattr_t;
 152 #endif
 153
 154
 155 #ifdef __USE_XOPEN2K
 156 /* POSIX spinlock data type.  */
 157 typedef volatile int pthread_spinlock_t;
 158
 159 /* POSIX barriers data type.  The structure of the type is
 160    deliberately not exposed.  */
 161 typedef union
 162 {
 163   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 164   long int __align;
 165 } pthread_barrier_t;
 166
 167 typedef union
 168 {
 169   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 170   int __align;
 171 } pthread_barrierattr_t;
 172 #endif
 173
 174
 175 #endif  /* bits/pthreadtypes.h */