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@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