nptl/sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h

   1 /* Copyright (C) 2002,2003,2004,2005,2006,2007 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #ifndef _BITS_PTHREADTYPES_H
  20 #define _BITS_PTHREADTYPES_H    1
  21
  22 #define __SIZEOF_PTHREAD_ATTR_T 36
  23 #define __SIZEOF_PTHREAD_MUTEX_T 24
  24 #define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  25 #define __SIZEOF_PTHREAD_COND_T 48
  26 #define __SIZEOF_PTHREAD_COND_COMPAT_T 12
  27 #define __SIZEOF_PTHREAD_CONDATTR_T 4
  28 #define __SIZEOF_PTHREAD_RWLOCK_T 32
  29 #define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  30 #define __SIZEOF_PTHREAD_BARRIER_T 20
  31 #define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  32
  33
  34 /* Thread identifiers.  The structure of the attribute type is not
  35    exposed on purpose.  */
  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_slist
  47 {
  48   struct __pthread_internal_slist *__next;
  49 } __pthread_slist_t;
  50
  51
  52 /* Data structures for mutex handling.  The structure of the attribute
  53    type is not exposed on purpose.  */
  54 typedef union
  55 {
  56   struct __pthread_mutex_s
  57   {
  58     int __lock;
  59     unsigned int __count;
  60     int __owner;
  61     /* KIND must stay at this position in the structure to maintain
  62        binary compatibility.  */
  63     int __kind;
  64     unsigned int __nusers;
  65     __extension__ union
  66     {
  67       int __spins;
  68       __pthread_slist_t __list;
  69     };
  70   } __data;
  71   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  72   long int __align;
  73 } pthread_mutex_t;
  74
  75 typedef union
  76 {
  77   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  78   long int __align;
  79 } pthread_mutexattr_t;
  80
  81
  82 /* Data structure for conditional variable handling.  The structure of
  83    the attribute type is not exposed on purpose.  */
  84 typedef union
  85 {
  86   struct
  87   {
  88     int __lock;
  89     unsigned int __futex;
  90     __extension__ unsigned long long int __total_seq;
  91     __extension__ unsigned long long int __wakeup_seq;
  92     __extension__ unsigned long long int __woken_seq;
  93     void *__mutex;
  94     unsigned int __nwaiters;
  95     unsigned int __broadcast_seq;
  96   } __data;
  97   char __size[__SIZEOF_PTHREAD_COND_T];
  98   __extension__ long long int __align;
  99 } pthread_cond_t;
 100
 101 typedef union
 102 {
 103   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 104   long int __align;
 105 } pthread_condattr_t;
 106
 107
 108 /* Keys for thread-specific data */
 109 typedef unsigned int pthread_key_t;
 110
 111
 112 /* Once-only execution */
 113 typedef int pthread_once_t;
 114
 115
 116 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 117 /* Data structure for read-write lock variable handling.  The
 118    structure of the attribute type is not exposed on purpose.  */
 119 typedef union
 120 {
 121   struct
 122   {
 123     int __lock;
 124     unsigned int __nr_readers;
 125     unsigned int __readers_wakeup;
 126     unsigned int __writer_wakeup;
 127     unsigned int __nr_readers_queued;
 128     unsigned int __nr_writers_queued;
 129     /* FLAGS must stay at this position in the structure to maintain
 130        binary compatibility.  */
 131     unsigned char __flags;
 132     unsigned char __shared;
 133     unsigned char __pad1;
 134     unsigned char __pad2;
 135     int __writer;
 136   } __data;
 137   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 138   long int __align;
 139 } pthread_rwlock_t;
 140
 141 typedef union
 142 {
 143   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 144   long int __align;
 145 } pthread_rwlockattr_t;
 146 #endif
 147
 148
 149 #ifdef __USE_XOPEN2K
 150 /* POSIX spinlock data type.  */
 151 typedef volatile int pthread_spinlock_t;
 152
 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 /* Extra attributes for the cleanup functions.  */
 171 #define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
 172
 173 #endif  /* bits/pthreadtypes.h */