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

   1 /* Machine-specific pthread type layouts.  Alpha version.
   2    Copyright (C) 2003, 2004, 2005, 2006, 2007 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifndef _BITS_PTHREADTYPES_H
  21 #define _BITS_PTHREADTYPES_H    1
  22
  23 #define __SIZEOF_PTHREAD_ATTR_T         56
  24 #define __SIZEOF_PTHREAD_MUTEX_T        40
  25 #define __SIZEOF_PTHREAD_MUTEXATTR_T    4
  26 #define __SIZEOF_PTHREAD_COND_T         48
  27 #define __SIZEOF_PTHREAD_CONDATTR_T     4
  28 #define __SIZEOF_PTHREAD_RWLOCK_T       56
  29 #define __SIZEOF_PTHREAD_RWLOCKATTR_T   8
  30 #define __SIZEOF_PTHREAD_BARRIER_T      32
  31 #define __SIZEOF_PTHREAD_BARRIERATTR_T  4
  32
  33
  34 /* Thread identifiers.  The structure of the attribute type is
  35    deliberately not exposed.  */
  36 typedef unsigned long int pthread_t;
  37
  38
  39 typedef union
  40 {
  41   char __size[__SIZEOF_PTHREAD_ATTR_T];
  42   long int __align;
  43 } pthread_attr_t;
  44
  45
  46 typedef struct __pthread_internal_list
  47 {
  48   struct __pthread_internal_list *__prev;
  49   struct __pthread_internal_list *__next;
  50 } __pthread_list_t;
  51
  52
  53 /* Data structures for mutex handling.  The structure of the attribute
  54    type is deliberately not exposed.  */
  55 typedef union
  56 {
  57   struct __pthread_mutex_s
  58   {
  59     int __lock;
  60     unsigned int __count;
  61     int __owner;
  62     unsigned int __nusers;
  63     /* KIND must stay at this position in the structure to maintain
  64        binary compatibility.  */
  65     int __kind;
  66     int __spins;
  67     __pthread_list_t __list;
  68 #define __PTHREAD_MUTEX_HAVE_PREV       1
  69   } __data;
  70   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  71   long int __align;
  72 } pthread_mutex_t;
  73
  74 typedef union
  75 {
  76   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  77   int __align;
  78 } pthread_mutexattr_t;
  79
  80
  81 /* Data structure for conditional variable handling.  The structure of
  82    the attribute type is deliberately not exposed.  */
  83 typedef union
  84 {
  85   struct
  86   {
  87     int __lock;
  88     unsigned int __futex;
  89     __extension__ unsigned long long int __total_seq;
  90     __extension__ unsigned long long int __wakeup_seq;
  91     __extension__ unsigned long long int __woken_seq;
  92     void *__mutex;
  93     unsigned int __nwaiters;
  94     unsigned int __broadcast_seq;
  95   } __data;
  96   char __size[__SIZEOF_PTHREAD_COND_T];
  97   __extension__ long long int __align;
  98 } pthread_cond_t;
  99
 100 typedef union
 101 {
 102   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 103   int __align;
 104 } pthread_condattr_t;
 105
 106
 107 /* Keys for thread-specific data */
 108 typedef unsigned int pthread_key_t;
 109
 110
 111 /* Once-only execution */
 112 typedef int pthread_once_t;
 113
 114
 115 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 116 /* Data structure for read-write lock variable handling.  The
 117    structure of the attribute type is deliberately not exposed.  */
 118 typedef union
 119 {
 120   struct
 121   {
 122     int __lock;
 123     unsigned int __nr_readers;
 124     unsigned int __readers_wakeup;
 125     unsigned int __writer_wakeup;
 126     unsigned int __nr_readers_queued;
 127     unsigned int __nr_writers_queued;
 128     int __writer;
 129     int __shared;
 130     unsigned long int __pad1;
 131     unsigned long int __pad2;
 132     /* FLAGS must stay at this position in the structure to maintain
 133        binary compatibility.  */
 134     unsigned int __flags;
 135   } __data;
 136   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 137   long int __align;
 138 } pthread_rwlock_t;
 139
 140 typedef union
 141 {
 142   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 143   long int __align;
 144 } pthread_rwlockattr_t;
 145 #endif
 146
 147
 148 #ifdef __USE_XOPEN2K
 149 /* POSIX spinlock data type.  */
 150 typedef volatile int pthread_spinlock_t;
 151
 152 /* POSIX barriers data type.  The structure of the type is
 153    deliberately not exposed.  */
 154 typedef union
 155 {
 156   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 157   long int __align;
 158 } pthread_barrier_t;
 159
 160 typedef union
 161 {
 162   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 163   int __align;
 164 } pthread_barrierattr_t;
 165 #endif
 166
 167
 168 #endif  /* bits/pthreadtypes.h */