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 #include <stdbool.h>
33
34 __BEGIN_DECLS
35
36 typedef struct pthread_internal_t
37 {
38 struct pthread_internal_t* next;
39 struct pthread_internal_t** prev;
40 pthread_attr_t attr;
41 pid_t kernel_id;
42 pthread_cond_t join_cond;
43 int join_count;
44 void* return_value;
45 int internal_flags;
46 __pthread_cleanup_t* cleanup_stack;
47 void** tls; /* thread-local storage area */
48 } pthread_internal_t;
49
50 int _init_thread(pthread_internal_t* thread, pid_t kernel_id, pthread_attr_t* attr,
51 void* stack_base, bool add_to_thread_list);
52 void _pthread_internal_add( pthread_internal_t* thread );
53 pthread_internal_t* __get_thread(void);
54
55 /* needed by posix-timers.c */
56
timespec_add(struct timespec * a,const struct timespec * b)57 static __inline__ void timespec_add( struct timespec* a, const struct timespec* b )
58 {
59 a->tv_sec += b->tv_sec;
60 a->tv_nsec += b->tv_nsec;
61 if (a->tv_nsec >= 1000000000) {
62 a->tv_nsec -= 1000000000;
63 a->tv_sec += 1;
64 }
65 }
66
timespec_sub(struct timespec * a,const struct timespec * b)67 static __inline__ void timespec_sub( struct timespec* a, const struct timespec* b )
68 {
69 a->tv_sec -= b->tv_sec;
70 a->tv_nsec -= b->tv_nsec;
71 if (a->tv_nsec < 0) {
72 a->tv_nsec += 1000000000;
73 a->tv_sec -= 1;
74 }
75 }
76
timespec_zero(struct timespec * a)77 static __inline__ void timespec_zero( struct timespec* a )
78 {
79 a->tv_sec = a->tv_nsec = 0;
80 }
81
timespec_is_zero(const struct timespec * a)82 static __inline__ int timespec_is_zero( const struct timespec* a )
83 {
84 return (a->tv_sec == 0 && a->tv_nsec == 0);
85 }
86
timespec_cmp(const struct timespec * a,const struct timespec * b)87 static __inline__ int timespec_cmp( const struct timespec* a, const struct timespec* b )
88 {
89 if (a->tv_sec < b->tv_sec) return -1;
90 if (a->tv_sec > b->tv_sec) return +1;
91 if (a->tv_nsec < b->tv_nsec) return -1;
92 if (a->tv_nsec > b->tv_nsec) return +1;
93 return 0;
94 }
95
timespec_cmp0(const struct timespec * a)96 static __inline__ int timespec_cmp0( const struct timespec* a )
97 {
98 if (a->tv_sec < 0) return -1;
99 if (a->tv_sec > 0) return +1;
100 if (a->tv_nsec < 0) return -1;
101 if (a->tv_nsec > 0) return +1;
102 return 0;
103 }
104
105 extern int __pthread_cond_timedwait(pthread_cond_t*,
106 pthread_mutex_t*,
107 const struct timespec*,
108 clockid_t);
109
110 extern int __pthread_cond_timedwait_relative(pthread_cond_t*,
111 pthread_mutex_t*,
112 const struct timespec*);
113
114 /* needed by fork.c */
115 extern void __timer_table_start_stop(int stop);
116 extern void __bionic_atfork_run_prepare();
117 extern void __bionic_atfork_run_child();
118 extern void __bionic_atfork_run_parent();
119
120 __END_DECLS
121
122 #endif /* _PTHREAD_INTERNAL_H_ */
123