1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/* $OpenBSD: rthread.h,v 1.64 2019/02/13 13:22:14 mpi Exp $ */
/*
* Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Private data structures that back up the typedefs in pthread.h.
* Since only the thread library cares about their size or arrangement,
* it should be possible to switch libraries without relinking.
*
* Do not reorder _atomic_lock_t and sem_t variables in the structs.
* This is due to alignment requirements of certain arches like hppa.
* The current requirement is 16 bytes.
*
* THE MACHINE DEPENDENT CERROR CODE HAS HARD CODED OFFSETS INTO PTHREAD_T!
*/
#ifndef _RTHREAD_H_
#define _RTHREAD_H_
#include <semaphore.h>
#include "thread_private.h"
#ifdef __LP64__
#define RTHREAD_STACK_SIZE_DEF (512 * 1024)
#else
#define RTHREAD_STACK_SIZE_DEF (256 * 1024)
#endif
struct stack {
SLIST_ENTRY(stack) link; /* link for free default stacks */
void *sp; /* machine stack pointer */
void *base; /* bottom of allocated area */
size_t guardsize; /* size of PROT_NONE zone or */
/* ==1 if application alloced */
size_t len; /* total size of allocated stack */
};
#define PTHREAD_MIN_PRIORITY 0
#define PTHREAD_MAX_PRIORITY 31
struct pthread_rwlockattr {
int pshared;
};
struct pthread_barrier {
pthread_mutex_t mutex;
pthread_cond_t cond;
int threshold;
int in;
int out;
int generation;
};
struct pthread_barrierattr {
int pshared;
};
struct pthread_spinlock {
_atomic_lock_t lock;
pthread_t owner;
};
#define ROUND_TO_PAGE(size) \
(((size) + (_thread_pagesize - 1)) & ~(_thread_pagesize - 1))
__BEGIN_HIDDEN_DECLS
int _sem_wait(sem_t, int, const struct timespec *, int *);
int _sem_post(sem_t);
void _rthread_init(void);
struct stack *_rthread_alloc_stack(pthread_t);
void _rthread_free_stack(struct stack *);
#ifndef NO_PIC
void _rthread_dl_lock(int what);
#endif
extern int _threads_ready;
extern size_t _thread_pagesize;
extern LIST_HEAD(listhead, pthread) _thread_list;
extern _atomic_lock_t _thread_lock;
extern struct pthread_attr _rthread_attr_default;
__END_HIDDEN_DECLS
void _thread_dump_info(void);
#define REDIRECT_SYSCALL(x) typeof(x) x asm("_thread_sys_"#x)
#endif /* _RTHREAD_H_ */
|
