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001: /* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
002:    This file is part of the GNU C Library.
003:    Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
004: 
005:    The GNU C Library is free software; you can redistribute it and/or
006:    modify it under the terms of the GNU Lesser General Public
007:    License as published by the Free Software Foundation; either
008:    version 2.1 of the License, or (at your option) any later version.
009: 
010:    The GNU C Library is distributed in the hope that it will be useful,
011:    but WITHOUT ANY WARRANTY; without even the implied warranty of
012:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013:    Lesser General Public License for more details.
014: 
015:    You should have received a copy of the GNU Lesser General Public
016:    License along with the GNU C Library; if not, write to the Free
017:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
018:    02111-1307 USA.  */
019: 
020: #ifndef _BITS_PTHREADTYPES_H
021: #define _BITS_PTHREADTYPES_H    1
022: 
023: #include <bits/wordsize.h>
024: 
025: #if __WORDSIZE == 64
026: # define __SIZEOF_PTHREAD_ATTR_T 56
027: # define __SIZEOF_PTHREAD_MUTEX_T 40
028: # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
029: # define __SIZEOF_PTHREAD_COND_T 48
030: # define __SIZEOF_PTHREAD_CONDATTR_T 4
031: # define __SIZEOF_PTHREAD_RWLOCK_T 56
032: # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
033: # define __SIZEOF_PTHREAD_BARRIER_T 32
034: # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
035: #else
036: # define __SIZEOF_PTHREAD_ATTR_T 36
037: # define __SIZEOF_PTHREAD_MUTEX_T 24
038: # define __SIZEOF_PTHREAD_MUTEXATTR_T 4
039: # define __SIZEOF_PTHREAD_COND_T 48
040: # define __SIZEOF_PTHREAD_CONDATTR_T 4
041: # define __SIZEOF_PTHREAD_RWLOCK_T 32
042: # define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
043: # define __SIZEOF_PTHREAD_BARRIER_T 20
044: # define __SIZEOF_PTHREAD_BARRIERATTR_T 4
045: #endif
046: 
047: 
048: /* Thread identifiers.  The structure of the attribute type is not
049:    exposed on purpose.  */
050: typedef unsigned long int pthread_t;
051: 
052: 
053: typedef union
054: {
055:   char __size[__SIZEOF_PTHREAD_ATTR_T];
056:   long int __align;
057: } pthread_attr_t;
058: 
059: 
060: #if __WORDSIZE == 64
061: typedef struct __pthread_internal_list
062: {
063:   struct __pthread_internal_list *__prev;
064:   struct __pthread_internal_list *__next;
065: } __pthread_list_t;
066: #else
067: typedef struct __pthread_internal_slist
068: {
069:   struct __pthread_internal_slist *__next;
070: } __pthread_slist_t;
071: #endif
072: 
073: 
074: /* Data structures for mutex handling.  The structure of the attribute
075:    type is not exposed on purpose.  */
076: typedef union
077: {
078:   struct __pthread_mutex_s
079:   {
080:     int __lock;
081:     unsigned int __count;
082:     int __owner;
083: #if __WORDSIZE == 64
084:     unsigned int __nusers;
085: #endif
086:     /* KIND must stay at this position in the structure to maintain
087:        binary compatibility.  */
088:     int __kind;
089: #if __WORDSIZE == 64
090:     int __spins;
091:     __pthread_list_t __list;
092: # define __PTHREAD_MUTEX_HAVE_PREV      1
093: #else
094:     unsigned int __nusers;
095:     __extension__ union
096:     {
097:       int __spins;
098:       __pthread_slist_t __list;
099:     };
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: 

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