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

   1 /* Copyright (C) 2002, 2003, 2004 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 /* Data structures for mutex handling.  The structure of the attribute
  47    type is not exposed on purpose.  */
  48 typedef union
  49 {
  50   struct
  51   {
  52     int __lock;
  53     unsigned int __count;
  54     int __owner;
  55     /* KIND must stay at this position in the structure to maintain
  56        binary compatibility.  */
  57     int __kind;
  58     unsigned int __nusers;
  59     int __spins;
  60   } __data;
  61   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  62   long int __align;
  63 } pthread_mutex_t;
  64
  65 typedef union
  66 {
  67   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  68   long int __align;
  69 } pthread_mutexattr_t;
  70
  71
  72 /* Data structure for conditional variable handling.  The structure of
  73    the attribute type is not exposed on purpose.  */
  74 typedef union
  75 {
  76   struct
  77   {
  78     int __lock;
  79     unsigned int __futex;
  80     __extension__ unsigned long long int __total_seq;
  81     __extension__ unsigned long long int __wakeup_seq;
  82     __extension__ unsigned long long int __woken_seq;
  83     void *__mutex;
  84     unsigned int __nwaiters;
  85     unsigned int __broadcast_seq;
  86   } __data;
  87   char __size[__SIZEOF_PTHREAD_COND_T];
  88   __extension__ long long int __align;
  89 } pthread_cond_t;
  90
  91 typedef union
  92 {
  93   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
  94   long int __align;
  95 } pthread_condattr_t;
  96
  97
  98 /* Keys for thread-specific data */
  99 typedef unsigned int pthread_key_t;
 100
 101
 102 /* Once-only execution */
 103 typedef int pthread_once_t;
 104
 105
 106 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 107 /* Data structure for read-write lock variable handling.  The
 108    structure of the attribute type is not exposed on purpose.  */
 109 typedef union
 110 {
 111   struct
 112   {
 113     int __lock;
 114     unsigned int __nr_readers;
 115     unsigned int __readers_wakeup;
 116     unsigned int __writer_wakeup;
 117     unsigned int __nr_readers_queued;
 118     unsigned int __nr_writers_queued;
 119     /* FLAGS must stay at this position in the structure to maintain
 120        binary compatibility.  */
 121     unsigned int __flags;
 122     int __writer;
 123   } __data;
 124   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 125   long int __align;
 126 } pthread_rwlock_t;
 127
 128 typedef union
 129 {
 130   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 131   long int __align;
 132 } pthread_rwlockattr_t;
 133 #endif
 134
 135
 136 #ifdef __USE_XOPEN2K
 137 /* POSIX spinlock data type.  */
 138 typedef volatile int pthread_spinlock_t;
 139
 140
 141 /* POSIX barriers data type.  The structure of the type is
 142    deliberately not exposed.  */
 143 typedef union
 144 {
 145   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 146   long int __align;
 147 } pthread_barrier_t;
 148
 149 typedef union
 150 {
 151   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 152   int __align;
 153 } pthread_barrierattr_t;
 154 #endif
 155
 156
 157 /* Extra attributes for the cleanup functions.  */
 158 #define __cleanup_fct_attribute __attribute ((regparm (1)))
 159
 160 #endif  /* bits/pthreadtypes.h */