1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28 #ifndef _PTHREAD_INTERNAL_H_
29 #define _PTHREAD_INTERNAL_H_
30
31 #include <pthread.h>
32
33 __BEGIN_DECLS
34
35 typedef struct pthread_internal_t
36 {
37 struct pthread_internal_t* next;
38 struct pthread_internal_t** pref;
39 pthread_attr_t attr;
40 pid_t kernel_id;
41 pthread_cond_t join_cond;
42 int join_count;
43 void* return_value;
44 int intern;
45 __pthread_cleanup_t* cleanup_stack;
46 void** tls; /* thread-local storage area */
47 } pthread_internal_t;
48
49 extern void _init_thread(pthread_internal_t * thread, pid_t kernel_id, pthread_attr_t * attr, void * stack_base);
50
51 /* needed by posix-timers.c */
52
timespec_add(struct timespec * a,const struct timespec * b)53 static __inline__ void timespec_add( struct timespec* a, const struct timespec* b )
54 {
55 a->tv_sec += b->tv_sec;
56 a->tv_nsec += b->tv_nsec;
57 if (a->tv_nsec >= 1000000000) {
58 a->tv_nsec -= 1000000000;
59 a->tv_sec += 1;
60 }
61 }
62
timespec_sub(struct timespec * a,const struct timespec * b)63 static __inline__ void timespec_sub( struct timespec* a, const struct timespec* b )
64 {
65 a->tv_sec -= b->tv_sec;
66 a->tv_nsec -= b->tv_nsec;
67 if (a->tv_nsec < 0) {
68 a->tv_nsec += 1000000000;
69 a->tv_sec -= 1;
70 }
71 }
72
timespec_zero(struct timespec * a)73 static __inline__ void timespec_zero( struct timespec* a )
74 {
75 a->tv_sec = a->tv_nsec = 0;
76 }
77
timespec_is_zero(const struct timespec * a)78 static __inline__ int timespec_is_zero( const struct timespec* a )
79 {
80 return (a->tv_sec == 0 && a->tv_nsec == 0);
81 }
82
timespec_cmp(const struct timespec * a,const struct timespec * b)83 static __inline__ int timespec_cmp( const struct timespec* a, const struct timespec* b )
84 {
85 if (a->tv_sec < b->tv_sec) return -1;
86 if (a->tv_sec > b->tv_sec) return +1;
87 if (a->tv_nsec < b->tv_nsec) return -1;
88 if (a->tv_nsec > b->tv_nsec) return +1;
89 return 0;
90 }
91
timespec_cmp0(const struct timespec * a)92 static __inline__ int timespec_cmp0( const struct timespec* a )
93 {
94 if (a->tv_sec < 0) return -1;
95 if (a->tv_sec > 0) return +1;
96 if (a->tv_nsec < 0) return -1;
97 if (a->tv_nsec > 0) return +1;
98 return 0;
99 }
100
101 extern int __pthread_cond_timedwait(pthread_cond_t*,
102 pthread_mutex_t*,
103 const struct timespec*,
104 clockid_t);
105
106 extern int __pthread_cond_timedwait_relative(pthread_cond_t*,
107 pthread_mutex_t*,
108 const struct timespec*);
109
110 /* needed by fork.c */
111 extern void __timer_table_start_stop(int stop);
112
113 __END_DECLS
114
115 #endif /* _PTHREAD_INTERNAL_H_ */
116