1 #ifndef _PTHREAD_IMPL_H
2 #define _PTHREAD_IMPL_H
3
4 #include <pthread.h>
5 #include <signal.h>
6 #include <errno.h>
7 #include <limits.h>
8 #include <sys/mman.h>
9 #include "libc.h"
10 #include "atomic.h"
11 #include "futex.h"
12
13 #define pthread __pthread
14
15 struct pthread {
16 /* Part 1 -- these fields may be external or
17 * internal (accessed via asm) ABI. Do not change. */
18 struct pthread *self;
19 uintptr_t *dtv;
20 struct pthread *prev, *next; /* non-ABI */
21 uintptr_t sysinfo;
22 uintptr_t canary, canary2;
23
24 /* Part 2 -- implementation details, non-ABI. */
25 int tid;
26 int errno_val;
27 volatile int detach_state;
28 volatile int cancel;
29 volatile unsigned char canceldisable, cancelasync;
30 unsigned char tsd_used:1;
31 unsigned char dlerror_flag:1;
32 unsigned char *map_base;
33 size_t map_size;
34 void *stack;
35 size_t stack_size;
36 size_t guard_size;
37 void *result;
38 struct __ptcb *cancelbuf;
39 void **tsd;
40 struct {
41 volatile void *volatile head;
42 long off;
43 volatile void *volatile pending;
44 } robust_list;
45 volatile int timer_id;
46 locale_t locale;
47 volatile int killlock[1];
48 char *dlerror_buf;
49 void *stdio_locks;
50
51 /* Part 3 -- the positions of these fields relative to
52 * the end of the structure is external and internal ABI. */
53 uintptr_t canary_at_end;
54 uintptr_t *dtv_copy;
55 };
56
57 enum {
58 DT_EXITING = 0,
59 DT_JOINABLE,
60 DT_DETACHED,
61 };
62
63 struct __timer {
64 int timerid;
65 pthread_t thread;
66 };
67
68 #define __SU (sizeof(size_t)/sizeof(int))
69
70 #define _a_stacksize __u.__s[0]
71 #define _a_guardsize __u.__s[1]
72 #define _a_stackaddr __u.__s[2]
73 #define _a_detach __u.__i[3*__SU+0]
74 #define _a_sched __u.__i[3*__SU+1]
75 #define _a_policy __u.__i[3*__SU+2]
76 #define _a_prio __u.__i[3*__SU+3]
77 #define _m_type __u.__i[0]
78 #define _m_lock __u.__vi[1]
79 #define _m_waiters __u.__vi[2]
80 #define _m_prev __u.__p[3]
81 #define _m_next __u.__p[4]
82 #define _m_count __u.__i[5]
83 #define _c_shared __u.__p[0]
84 #define _c_seq __u.__vi[2]
85 #define _c_waiters __u.__vi[3]
86 #define _c_clock __u.__i[4]
87 #define _c_lock __u.__vi[8]
88 #define _c_head __u.__p[1]
89 #define _c_tail __u.__p[5]
90 #define _rw_lock __u.__vi[0]
91 #define _rw_waiters __u.__vi[1]
92 #define _rw_shared __u.__i[2]
93 #define _b_lock __u.__vi[0]
94 #define _b_waiters __u.__vi[1]
95 #define _b_limit __u.__i[2]
96 #define _b_count __u.__vi[3]
97 #define _b_waiters2 __u.__vi[4]
98 #define _b_inst __u.__p[3]
99
100 #include "pthread_arch.h"
101
102 #ifndef CANARY
103 #define CANARY canary
104 #endif
105
106 #ifndef DTP_OFFSET
107 #define DTP_OFFSET 0
108 #endif
109
110 #ifndef tls_mod_off_t
111 #define tls_mod_off_t size_t
112 #endif
113
114 #define SIGTIMER 32
115 #define SIGCANCEL 33
116 #define SIGSYNCCALL 34
117
118 #define SIGALL_SET ((sigset_t *)(const unsigned long long [2]){ -1,-1 })
119 #define SIGPT_SET \
120 ((sigset_t *)(const unsigned long [_NSIG/8/sizeof(long)]){ \
121 [sizeof(long)==4] = 3UL<<(32*(sizeof(long)>4)) })
122 #define SIGTIMER_SET \
123 ((sigset_t *)(const unsigned long [_NSIG/8/sizeof(long)]){ \
124 0x80000000 })
125
126 void *__tls_get_addr(tls_mod_off_t *);
127 hidden void *__tls_get_new(tls_mod_off_t *);
128 hidden int __init_tp(void *);
129 hidden void *__copy_tls(unsigned char *);
130 hidden void __reset_tls();
131
132 hidden void __membarrier_init(void);
133 hidden void __dl_thread_cleanup(void);
134 hidden void __testcancel();
135 hidden void __do_cleanup_push(struct __ptcb *);
136 hidden void __do_cleanup_pop(struct __ptcb *);
137 hidden void __pthread_tsd_run_dtors();
138
139 hidden void __pthread_key_delete_synccall(void (*)(void *), void *);
140 hidden int __pthread_key_delete_impl(pthread_key_t);
141
142 extern hidden volatile size_t __pthread_tsd_size;
143 extern hidden void *__pthread_tsd_main[];
144 extern hidden volatile int __aio_fut;
145 extern hidden volatile int __eintr_valid_flag;
146
147 hidden int __clone(int (*)(void *), void *, int, void *, ...);
148 hidden int __set_thread_area(void *);
149 hidden int __libc_sigaction(int, const struct sigaction *, struct sigaction *);
150 hidden void __unmapself(void *, size_t);
151
152 hidden int __timedwait(volatile int *, int, clockid_t, const struct timespec *, int);
153 hidden int __timedwait_cp(volatile int *, int, clockid_t, const struct timespec *, int);
154 hidden void __wait(volatile int *, volatile int *, int, int);
__wake(volatile void * addr,int cnt,int priv)155 static inline void __wake(volatile void *addr, int cnt, int priv)
156 {
157 /* TRUSTY - no threads yet. */
158 a_crash();
159 }
__futexwait(volatile void * addr,int val,int priv)160 static inline void __futexwait(volatile void *addr, int val, int priv)
161 {
162 /* TRUSTY - no threads yet. */
163 a_crash();
164 }
165
166 hidden void __acquire_ptc(void);
167 hidden void __release_ptc(void);
168 hidden void __inhibit_ptc(void);
169
170 hidden void __tl_lock(void);
171 hidden void __tl_unlock(void);
172 hidden void __tl_sync(pthread_t);
173
174 extern hidden volatile int __thread_list_lock;
175
176 extern hidden unsigned __default_stacksize;
177 extern hidden unsigned __default_guardsize;
178
179 #define DEFAULT_STACK_SIZE 131072
180 #define DEFAULT_GUARD_SIZE 8192
181
182 #define DEFAULT_STACK_MAX (8<<20)
183 #define DEFAULT_GUARD_MAX (1<<20)
184
185 #define __ATTRP_C11_THREAD ((void*)(uintptr_t)-1)
186
187 #endif
188