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      1 /* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
      2    This file is part of the GNU C Library.
      3    Contributed by Ulrich Drepper <drepper (at) redhat.com>, 2002.
      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 #include <bits/wordsize.h>
     24 
     25 #if __WORDSIZE == 64
     26 # define __SIZEOF_PTHREAD_ATTR_T 56
     27 # define __SIZEOF_PTHREAD_MUTEX_T 40
     28 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
     29 # define __SIZEOF_PTHREAD_COND_T 48
     30 # define __SIZEOF_PTHREAD_CONDATTR_T 4
     31 # define __SIZEOF_PTHREAD_RWLOCK_T 56
     32 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
     33 # define __SIZEOF_PTHREAD_BARRIER_T 32
     34 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
     35 #else
     36 # define __SIZEOF_PTHREAD_ATTR_T 36
     37 # define __SIZEOF_PTHREAD_MUTEX_T 24
     38 # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
     39 # define __SIZEOF_PTHREAD_COND_T 48
     40 # define __SIZEOF_PTHREAD_CONDATTR_T 4
     41 # define __SIZEOF_PTHREAD_RWLOCK_T 32
     42 # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
     43 # define __SIZEOF_PTHREAD_BARRIER_T 20
     44 # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
     45 #endif
     46 
     47 
     48 /* Thread identifiers.  The structure of the attribute type is not
     49    exposed on purpose.  */
     50 typedef unsigned long int pthread_t;
     51 
     52 
     53 typedef union
     54 {
     55   char __size[__SIZEOF_PTHREAD_ATTR_T];
     56   long int __align;
     57 } pthread_attr_t;
     58 
     59 
     60 #if __WORDSIZE == 64
     61 typedef struct __pthread_internal_list
     62 {
     63   struct __pthread_internal_list *__prev;
     64   struct __pthread_internal_list *__next;
     65 } __pthread_list_t;
     66 #else
     67 typedef struct __pthread_internal_slist
     68 {
     69   struct __pthread_internal_slist *__next;
     70 } __pthread_slist_t;
     71 #endif
     72 
     73 
     74 /* Data structures for mutex handling.  The structure of the attribute
     75    type is not exposed on purpose.  */
     76 typedef union
     77 {
     78   struct __pthread_mutex_s
     79   {
     80     int __lock;
     81     unsigned int __count;
     82     int __owner;
     83 #if __WORDSIZE == 64
     84     unsigned int __nusers;
     85 #endif
     86     /* KIND must stay at this position in the structure to maintain
     87        binary compatibility.  */
     88     int __kind;
     89 #if __WORDSIZE == 64
     90     int __spins;
     91     __pthread_list_t __list;
     92 # define __PTHREAD_MUTEX_HAVE_PREV	1
     93 #else
     94     unsigned int __nusers;
     95     __extension__ union
     96     {
     97       int __spins;
     98       __pthread_slist_t __list;
     99     };
    100 #endif
    101   } __data;
    102   char __size[__SIZEOF_PTHREAD_MUTEX_T];
    103   long int __align;
    104 } pthread_mutex_t;
    105 
    106 typedef union
    107 {
    108   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
    109   int __align;
    110 } pthread_mutexattr_t;
    111 
    112 
    113 /* Data structure for conditional variable handling.  The structure of
    114    the attribute type is not exposed on purpose.  */
    115 typedef union
    116 {
    117   struct
    118   {
    119     int __lock;
    120     unsigned int __futex;
    121     __extension__ unsigned long long int __total_seq;
    122     __extension__ unsigned long long int __wakeup_seq;
    123     __extension__ unsigned long long int __woken_seq;
    124     void *__mutex;
    125     unsigned int __nwaiters;
    126     unsigned int __broadcast_seq;
    127   } __data;
    128   char __size[__SIZEOF_PTHREAD_COND_T];
    129   __extension__ long long int __align;
    130 } pthread_cond_t;
    131 
    132 typedef union
    133 {
    134   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
    135   int __align;
    136 } pthread_condattr_t;
    137 
    138 
    139 /* Keys for thread-specific data */
    140 typedef unsigned int pthread_key_t;
    141 
    142 
    143 /* Once-only execution */
    144 typedef int pthread_once_t;
    145 
    146 
    147 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
    148 /* Data structure for read-write lock variable handling.  The
    149    structure of the attribute type is not exposed on purpose.  */
    150 typedef union
    151 {
    152 # if __WORDSIZE == 64
    153   struct
    154   {
    155     int __lock;
    156     unsigned int __nr_readers;
    157     unsigned int __readers_wakeup;
    158     unsigned int __writer_wakeup;
    159     unsigned int __nr_readers_queued;
    160     unsigned int __nr_writers_queued;
    161     int __writer;
    162     int __shared;
    163     unsigned long int __pad1;
    164     unsigned long int __pad2;
    165     /* FLAGS must stay at this position in the structure to maintain
    166        binary compatibility.  */
    167     unsigned int __flags;
    168   } __data;
    169 # else
    170   struct
    171   {
    172     int __lock;
    173     unsigned int __nr_readers;
    174     unsigned int __readers_wakeup;
    175     unsigned int __writer_wakeup;
    176     unsigned int __nr_readers_queued;
    177     unsigned int __nr_writers_queued;
    178     /* FLAGS must stay at this position in the structure to maintain
    179        binary compatibility.  */
    180     unsigned char __flags;
    181     unsigned char __shared;
    182     unsigned char __pad1;
    183     unsigned char __pad2;
    184     int __writer;
    185   } __data;
    186 # endif
    187   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
    188   long int __align;
    189 } pthread_rwlock_t;
    190 
    191 typedef union
    192 {
    193   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
    194   long int __align;
    195 } pthread_rwlockattr_t;
    196 #endif
    197 
    198 
    199 #ifdef __USE_XOPEN2K
    200 /* POSIX spinlock data type.  */
    201 typedef volatile int pthread_spinlock_t;
    202 
    203 
    204 /* POSIX barriers data type.  The structure of the type is
    205    deliberately not exposed.  */
    206 typedef union
    207 {
    208   char __size[__SIZEOF_PTHREAD_BARRIER_T];
    209   long int __align;
    210 } pthread_barrier_t;
    211 
    212 typedef union
    213 {
    214   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
    215   int __align;
    216 } pthread_barrierattr_t;
    217 #endif
    218 
    219 
    220 #if __WORDSIZE == 32
    221 /* Extra attributes for the cleanup functions.  */
    222 # define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
    223 #endif
    224 
    225 #endif	/* bits/pthreadtypes.h */
    226