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

   1 /* Machine-specific pthread type layouts.  Alpha version.
   2    Copyright (C) 2003-2014 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 typedef union
  77 {
  78   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  79   int __align;
  80 } pthread_mutexattr_t;
  81
  82
  83 /* Data structure for conditional variable handling.  The structure of
  84    the attribute type is deliberately not exposed.  */
  85 typedef union
  86 {
  87   struct
  88   {
  89     int __lock;
  90     unsigned int __futex;
  91     __extension__ unsigned long long int __total_seq;
  92     __extension__ unsigned long long int __wakeup_seq;
  93     __extension__ unsigned long long int __woken_seq;
  94     void *__mutex;
  95     unsigned int __nwaiters;
  96     unsigned int __broadcast_seq;
  97   } __data;
  98   char __size[__SIZEOF_PTHREAD_COND_T];
  99   __extension__ long long int __align;
 100 } pthread_cond_t;
 101
 102 typedef union
 103 {
 104   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 105   int __align;
 106 } pthread_condattr_t;
 107
 108
 109 /* Keys for thread-specific data */
 110 typedef unsigned int pthread_key_t;
 111
 112
 113 /* Once-only execution */
 114 typedef int pthread_once_t;
 115
 116
 117 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 118 /* Data structure for read-write lock variable handling.  The
 119    structure of the attribute type is deliberately not exposed.  */
 120 typedef union
 121 {
 122   struct
 123   {
 124     int __lock;
 125     unsigned int __nr_readers;
 126     unsigned int __readers_wakeup;
 127     unsigned int __writer_wakeup;
 128     unsigned int __nr_readers_queued;
 129     unsigned int __nr_writers_queued;
 130     int __writer;
 131     int __shared;
 132     unsigned long int __pad1;
 133     unsigned long int __pad2;
 134     /* FLAGS must stay at this position in the structure to maintain
 135        binary compatibility.  */
 136     unsigned int __flags;
 137   } __data;
 138   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 139   long int __align;
 140 } pthread_rwlock_t;
 141
 142 typedef union
 143 {
 144   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 145   long int __align;
 146 } pthread_rwlockattr_t;
 147 #endif
 148
 149
 150 #ifdef __USE_XOPEN2K
 151 /* POSIX spinlock data type.  */
 152 typedef volatile int pthread_spinlock_t;
 153
 154 /* POSIX barriers data type.  The structure of the type is
 155    deliberately not exposed.  */
 156 typedef union
 157 {
 158   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 159   long int __align;
 160 } pthread_barrier_t;
 161
 162 typedef union
 163 {
 164   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 165   int __align;
 166 } pthread_barrierattr_t;
 167 #endif
 168
 169
 170 #endif  /* bits/pthreadtypes.h */