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1 /* Copyright (C) 2002-2014 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, see
16 <http://www.gnu.org/licenses/>. */
17
18 #ifndef _BITS_PTHREADTYPES_H
19 #define _BITS_PTHREADTYPES_H 1
20
21 #include <endian.h>
22
23 #define __SIZEOF_PTHREAD_ATTR_T 36
24 #define __SIZEOF_PTHREAD_MUTEX_T 24
25 #define __SIZEOF_PTHREAD_MUTEXATTR_T 4
26 #define __SIZEOF_PTHREAD_COND_T 48
27 #define __SIZEOF_PTHREAD_COND_COMPAT_T 12
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 not
36 exposed on purpose. */
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 not exposed on purpose. */
59 typedef union
60 {
61 struct __pthread_mutex_s
62 {
63 int __lock;
64 unsigned int __count;
65 int __owner;
66 /* KIND must stay at this position in the structure to maintain
67 binary compatibility. */
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 typedef union
81 {
82 char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
83 long int __align;
84 } pthread_mutexattr_t;
85
86
87 /* Data structure for conditional variable handling. The structure of
88 the attribute type is not exposed on purpose. */
89 typedef union
90 {
91 struct
92 {
93 int __lock;
94 unsigned int __futex;
95 __extension__ unsigned long long int __total_seq;
96 __extension__ unsigned long long int __wakeup_seq;
97 __extension__ unsigned long long int __woken_seq;
98 void *__mutex;
99 unsigned int __nwaiters;
100 unsigned int __broadcast_seq;
101 } __data;
102 char __size[__SIZEOF_PTHREAD_COND_T];
103 __extension__ long long int __align;
104 } pthread_cond_t;
105
106 typedef union
107 {
108 char __size[__SIZEOF_PTHREAD_CONDATTR_T];
109 long int __align;
110 } pthread_condattr_t;
111
112
113 /* Keys for thread-specific data */
114 typedef unsigned int pthread_key_t;
115
116
117 /* Once-only execution */
118 typedef int pthread_once_t;
119
120
121 #if defined __USE_UNIX98 || defined __USE_XOPEN2K
122 /* Data structure for read-write lock variable handling. The
123 structure of the attribute type is not exposed on purpose. */
124 typedef union
125 {
126 struct
127 {
128 int __lock;
129 unsigned int __nr_readers;
130 unsigned int __readers_wakeup;
131 unsigned int __writer_wakeup;
132 unsigned int __nr_readers_queued;
133 unsigned int __nr_writers_queued;
134 #if __BYTE_ORDER == __BIG_ENDIAN
135 unsigned char __pad1;
136 unsigned char __pad2;
137 unsigned char __shared;
138 /* FLAGS must stay at this position in the structure to maintain
139 binary compatibility. */
140 unsigned char __flags;
141 #else
142 /* FLAGS must stay at this position in the structure to maintain
143 binary compatibility. */
144 unsigned char __flags;
145 unsigned char __shared;
146 unsigned char __pad1;
147 unsigned char __pad2;
148 #endif
149 int __writer;
150 } __data;
151 char __size[__SIZEOF_PTHREAD_RWLOCK_T];
152 long int __align;
153 } pthread_rwlock_t;
154
155 typedef union
156 {
157 char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
158 long int __align;
159 } pthread_rwlockattr_t;
160 #endif
161
162
163 #ifdef __USE_XOPEN2K
164 /* POSIX spinlock data type. */
165 typedef volatile int pthread_spinlock_t;
166
167
168 /* POSIX barriers data type. The structure of the type is
169 deliberately not exposed. */
170 typedef union
171 {
172 char __size[__SIZEOF_PTHREAD_BARRIER_T];
173 long int __align;
174 } pthread_barrier_t;
175
176 typedef union
177 {
178 char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
179 int __align;
180 } pthread_barrierattr_t;
181 #endif
182
183
184 #endif /* bits/pthreadtypes.h */