1 /*
2 * Copyright (c) 2004 David Xu <davidxu@freebsd.org>
3 * Copyright (c) 2004 Marcel Moolenaar
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * $DragonFly: src/lib/libthread_db/thread_db.h,v 1.1 2005/05/07 09:25:44 davidxu Exp $
28 */
29
30 #ifndef _THREAD_DB_H_
31 #define _THREAD_DB_H_
32
33 #include <sys/procfs.h>
34 #include <pthread.h>
35
36 typedef enum {
37 TD_ERR = -1, /* Unspecified error. */
38 TD_OK = 0, /* No error. */
39 TD_BADKEY,
40 TD_BADPH,
41 TD_BADSH,
42 TD_BADTA,
43 TD_BADTH,
44 TD_DBERR,
45 TD_MALLOC,
46 TD_NOAPLIC,
47 TD_NOCAPAB,
48 TD_NOEVENT,
49 TD_NOFPREGS,
50 TD_NOLIBTHREAD,
51 TD_NOLWP,
52 TD_NOMSG,
53 TD_NOSV,
54 TD_NOTHR,
55 TD_NOTSD,
56 TD_NOXREGS,
57 TD_PARTIALREG
58 } td_err_e;
59
60 struct ps_prochandle;
61 typedef struct td_thragent td_thragent_t;
62 typedef long thread_t; /* Must be an integral type. */
63
64 typedef struct {
65 const td_thragent_t *th_ta;
66 psaddr_t th_thread;
67 thread_t th_tid;
68 } td_thrhandle_t; /* Used non-opaguely. */
69
70 /*
71 * Events.
72 */
73
74 typedef enum {
75 TD_EVENT_NONE = 0,
76 TD_CATCHSIG = 0x0001,
77 TD_CONCURRENCY= 0x0002,
78 TD_CREATE = 0x0004,
79 TD_DEATH = 0x0008,
80 TD_IDLE = 0x0010,
81 TD_LOCK_TRY = 0x0020,
82 TD_PREEMPT = 0x0040,
83 TD_PRI_INHERIT= 0x0080,
84 TD_READY = 0x0100,
85 TD_REAP = 0x0200,
86 TD_SLEEP = 0x0400,
87 TD_SWITCHFROM = 0x0800,
88 TD_SWITCHTO = 0x1000,
89 TD_TIMEOUT = 0x2000,
90 TD_ALL_EVENTS = ~0
91 } td_thr_events_e;
92
93 /* Compatibility with Linux. */
94 #define td_event_e td_thr_events_e
95
96 typedef struct {
97 td_thr_events_e event;
98 const td_thrhandle_t *th_p;
99 uintptr_t data;
100 } td_event_msg_t;
101
102 typedef unsigned int td_thr_events_t;
103
104 typedef enum {
105 NOTIFY_BPT, /* User inserted breakpoint. */
106 NOTIFY_AUTOBPT, /* Automatic breakpoint. */
107 NOTIFY_SYSCALL /* Invocation of system call. */
108 } td_notify_e;
109
110 typedef struct {
111 td_notify_e type;
112 union {
113 psaddr_t bptaddr;
114 int syscallno;
115 } u;
116 } td_notify_t;
117
118 static __inline void
td_event_addset(td_thr_events_t * es,td_thr_events_e e)119 td_event_addset(td_thr_events_t *es, td_thr_events_e e)
120 {
121 *es |= e;
122 }
123
124 static __inline void
td_event_delset(td_thr_events_t * es,td_thr_events_e e)125 td_event_delset(td_thr_events_t *es, td_thr_events_e e)
126 {
127 *es &= ~e;
128 }
129
130 static __inline void
td_event_emptyset(td_thr_events_t * es)131 td_event_emptyset(td_thr_events_t *es)
132 {
133 *es = TD_EVENT_NONE;
134 }
135
136 static __inline void
td_event_fillset(td_thr_events_t * es)137 td_event_fillset(td_thr_events_t *es)
138 {
139 *es = TD_ALL_EVENTS;
140 }
141
142 static __inline int
td_eventisempty(td_thr_events_t * es)143 td_eventisempty(td_thr_events_t *es)
144 {
145 return ((*es == TD_EVENT_NONE) ? 1 : 0);
146 }
147
148 static __inline int
td_eventismember(td_thr_events_t * es,td_thr_events_e e)149 td_eventismember(td_thr_events_t *es, td_thr_events_e e)
150 {
151 return ((*es & e) ? 1 : 0);
152 }
153
154 /*
155 * Thread info.
156 */
157
158 typedef enum {
159 TD_THR_UNKNOWN = -1,
160 TD_THR_ANY_STATE = 0,
161 TD_THR_ACTIVE,
162 TD_THR_RUN,
163 TD_THR_SLEEP,
164 TD_THR_STOPPED,
165 TD_THR_STOPPED_ASLEEP,
166 TD_THR_ZOMBIE
167 } td_thr_state_e;
168
169 typedef enum
170 {
171 TD_THR_SYSTEM = 1,
172 TD_THR_USER
173 } td_thr_type_e;
174
175 typedef pthread_key_t thread_key_t;
176
177 typedef struct {
178 const td_thragent_t *ti_ta_p;
179 thread_t ti_tid;
180 psaddr_t ti_thread;
181 td_thr_state_e ti_state;
182 td_thr_type_e ti_type;
183 td_thr_events_t ti_events;
184 int ti_pri;
185 lwpid_t ti_lid;
186 char ti_db_suspended;
187 char ti_traceme;
188 sigset_t ti_sigmask;
189 sigset_t ti_pending;
190 psaddr_t ti_tls;
191 psaddr_t ti_startfunc;
192 psaddr_t ti_stkbase;
193 size_t ti_stksize;
194 } td_thrinfo_t;
195
196 /*
197 * Prototypes.
198 */
199
200 typedef int td_key_iter_f(thread_key_t, void (*)(void *), void *);
201 typedef int td_thr_iter_f(const td_thrhandle_t *, void *);
202
203 /* Flags for `td_ta_thr_iter'. */
204 #define TD_THR_ANY_USER_FLAGS 0xffffffff
205 #define TD_THR_LOWEST_PRIORITY -20
206 #define TD_SIGNO_MASK NULL
207
208 __BEGIN_DECLS
209 td_err_e td_init(void);
210 td_err_e td_ta_clear_event(const td_thragent_t *, td_thr_events_t *);
211 td_err_e td_ta_delete(td_thragent_t *);
212 td_err_e td_ta_event_addr(const td_thragent_t *, td_thr_events_e,
213 td_notify_t *);
214 td_err_e td_ta_event_getmsg(const td_thragent_t *, td_event_msg_t *);
215 td_err_e td_ta_map_id2thr(const td_thragent_t *, thread_t, td_thrhandle_t *);
216 td_err_e td_ta_map_lwp2thr(const td_thragent_t *, lwpid_t, td_thrhandle_t *);
217 td_err_e td_ta_new(struct ps_prochandle *, td_thragent_t **);
218 td_err_e td_ta_set_event(const td_thragent_t *, td_thr_events_t *);
219 td_err_e td_ta_thr_iter(const td_thragent_t *, td_thr_iter_f *, void *,
220 td_thr_state_e, int, sigset_t *, unsigned int);
221 td_err_e td_ta_tsd_iter(const td_thragent_t *, td_key_iter_f *, void *);
222 td_err_e td_thr_clear_event(const td_thrhandle_t *, td_thr_events_t *);
223 td_err_e td_thr_dbresume(const td_thrhandle_t *);
224 td_err_e td_thr_dbsuspend(const td_thrhandle_t *);
225 td_err_e td_thr_event_enable(const td_thrhandle_t *, int);
226 td_err_e td_thr_event_getmsg(const td_thrhandle_t *, td_event_msg_t *);
227 td_err_e td_thr_get_info(const td_thrhandle_t *, td_thrinfo_t *);
228 td_err_e td_thr_getfpregs(const td_thrhandle_t *, prfpregset_t *);
229 td_err_e td_thr_getgregs(const td_thrhandle_t *, prgregset_t);
230 td_err_e td_thr_set_event(const td_thrhandle_t *, td_thr_events_t *);
231 td_err_e td_thr_setfpregs(const td_thrhandle_t *, const prfpregset_t *);
232 td_err_e td_thr_setgregs(const td_thrhandle_t *, const prgregset_t);
233 td_err_e td_thr_validate(const td_thrhandle_t *);
234 td_err_e td_thr_tls_get_addr(const td_thrhandle_t *, void *, size_t, void **);
235
236 __END_DECLS
237
238 #endif /* _THREAD_DB_H_ */
239