sysdeps/m68k/nptl/bits/pthreadtypes.h

   1 /* Copyright (C) 2010-2016 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
   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 #include <endian.h>
  23
  24 #define __SIZEOF_PTHREAD_ATTR_T 36
  25 #define __SIZEOF_PTHREAD_MUTEX_T 24
  26 #define __SIZEOF_PTHREAD_MUTEXATTR_T 4
  27 #define __SIZEOF_PTHREAD_COND_T 48
  28 #define __SIZEOF_PTHREAD_CONDATTR_T 4
  29 #define __SIZEOF_PTHREAD_RWLOCK_T 32
  30 #define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
  31 #define __SIZEOF_PTHREAD_BARRIER_T 20
  32 #define __SIZEOF_PTHREAD_BARRIERATTR_T 4
  33
  34
  35 /* Thread identifiers.  The structure of the attribute type is
  36    deliberately not exposed.  */
  37 typedef unsigned long int pthread_t;
  38
  39
  40 union pthread_attr_t
  41 {
  42   char __size[__SIZEOF_PTHREAD_ATTR_T];
  43   long int __align;
  44 };
  45 #ifndef __have_pthread_attr_t
  46 typedef union pthread_attr_t pthread_attr_t;
  47 # define __have_pthread_attr_t  1
  48 #endif
  49
  50
  51 typedef struct __pthread_internal_slist
  52 {
  53   struct __pthread_internal_slist *__next;
  54 } __pthread_slist_t;
  55
  56
  57 /* Data structures for mutex handling.  The structure of the attribute
  58    type is deliberately not exposed.  */
  59 typedef union
  60 {
  61   struct __pthread_mutex_s
  62   {
  63     int __lock __attribute__ ((__aligned__ (4)));
  64     unsigned int __count;
  65     int __owner;
  66     /* KIND must stay at this position in the structure to maintain
  67        binary compatibility with static initializers.  */
  68     int __kind;
  69     unsigned int __nusers;
  70     __extension__ union
  71     {
  72       int __spins;
  73       __pthread_slist_t __list;
  74     };
  75   } __data;
  76   char __size[__SIZEOF_PTHREAD_MUTEX_T];
  77   long int __align;
  78 } pthread_mutex_t;
  79
  80 /* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER.  */
  81 #define __PTHREAD_SPINS 0
  82
  83 typedef union
  84 {
  85   char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
  86   int __align;
  87 } pthread_mutexattr_t;
  88
  89
  90 /* Data structure for conditional variable handling.  The structure of
  91    the attribute type is not exposed on purpose.  */
  92 typedef union
  93 {
  94   struct
  95   {
  96     __extension__ union
  97     {
  98       __extension__ unsigned long long int __wseq;
  99       struct {
 100         unsigned int __low;
 101         unsigned int __high;
 102       } __wseq32;
 103     };
 104     __extension__ union
 105     {
 106       __extension__ unsigned long long int __g1_start;
 107       struct {
 108         unsigned int __low;
 109         unsigned int __high;
 110       } __g1_start32;
 111     };
 112     /* Enforce proper alignment of fields used as futex words.  */
 113     unsigned int __g_refs[2] __attribute__ ((__aligned__ (4)));
 114     unsigned int __g_size[2];
 115     unsigned int __g1_orig_size;
 116     unsigned int __wrefs;
 117     unsigned int __g_signals[2];
 118   } __data;
 119   char __size[__SIZEOF_PTHREAD_COND_T];
 120   __extension__ long long int __align;
 121 } pthread_cond_t;
 122
 123 typedef union
 124 {
 125   char __size[__SIZEOF_PTHREAD_CONDATTR_T];
 126   int __align;
 127 } pthread_condattr_t;
 128
 129
 130 /* Keys for thread-specific data */
 131 typedef unsigned int pthread_key_t;
 132
 133
 134 /* Once-only execution */
 135 typedef int __attribute__ ((__aligned__ (4))) pthread_once_t;
 136
 137
 138 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
 139 /* Data structure for read-write lock variable handling.  The
 140    structure of the attribute type is deliberately not exposed.  */
 141 typedef union
 142 {
 143   struct
 144   {
 145     int __lock __attribute__ ((__aligned__ (4)));
 146     unsigned int __nr_readers;
 147     unsigned int __readers_wakeup;
 148     unsigned int __writer_wakeup;
 149     unsigned int __nr_readers_queued;
 150     unsigned int __nr_writers_queued;
 151     unsigned char __pad1;
 152     unsigned char __pad2;
 153     unsigned char __shared;
 154     /* FLAGS must stay at this position in the structure to maintain
 155        binary compatibility.  */
 156     unsigned char __flags;
 157     int __writer;
 158   } __data;
 159   char __size[__SIZEOF_PTHREAD_RWLOCK_T];
 160   long int __align;
 161 } pthread_rwlock_t;
 162
 163 #define __PTHREAD_RWLOCK_ELISION_EXTRA 0
 164
 165 typedef union
 166 {
 167   char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
 168   long int __align;
 169 } pthread_rwlockattr_t;
 170 #endif
 171
 172
 173 #ifdef __USE_XOPEN2K
 174 /* POSIX spinlock data type.  */
 175 typedef volatile int pthread_spinlock_t;
 176
 177
 178 /* POSIX barriers data type.  The structure of the type is
 179    deliberately not exposed.  */
 180 typedef union
 181 {
 182   char __size[__SIZEOF_PTHREAD_BARRIER_T];
 183   long int __align __attribute__ ((__aligned__ (4)));
 184 } pthread_barrier_t;
 185
 186 typedef union
 187 {
 188   char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
 189   int __align;
 190 } pthread_barrierattr_t;
 191 #endif
 192
 193
 194 #endif  /* bits/pthreadtypes.h */