1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef _LIBTHREAD_DB__THREAD_DB_H
18#define _LIBTHREAD_DB__THREAD_DB_H
19
20#include <pthread.h>
21#include <signal.h>
22#include <stdint.h>
23#include <sys/types.h>
24
25typedef void *psaddr_t;
26#define HAVE_PSADDR_T 1
27
28typedef pid_t lwpid_t;
29#define HAVE_LWPID_T 1
30
31#define TD_THR_ANY_USER_FLAGS       0xffffffff
32#define TD_THR_LOWEST_PRIORITY      -20
33#define TD_SIGNO_MASK               NULL
34
35/* td_err_e values */
36enum {
37    TD_OK,
38    TD_ERR,
39    TD_NOTHR,
40    TD_NOSV,
41    TD_NOLWP,
42    TD_BADPH,
43    TD_BADTH,
44    TD_BADSH,
45    TD_BADTA,
46    TD_BADKEY,
47    TD_NOMSG,
48    TD_NOFPREGS,
49    TD_NOLIBTHREAD,
50    TD_NOEVENT,
51    TD_NOCAPAB,
52    TD_DBERR,
53    TD_NOAPLIC,
54    TD_NOTSD,
55    TD_MALLOC,
56    TD_PARTIALREG,
57    TD_NOXREGS,
58    TD_VERSION
59};
60
61/*
62 * td_event_e values
63 * NOTE: There is a max of 32 events
64 */
65enum {
66    TD_CREATE,
67    TD_DEATH
68};
69
70/* td_thr_state_e values */
71enum {
72    TD_THR_ANY_STATE,
73    TD_THR_UNKNOWN,
74    TD_THR_SLEEP,
75    TD_THR_ZOMBIE
76};
77
78typedef int32_t td_err_e;
79typedef uint32_t td_event_e;
80typedef uint32_t td_notify_e;
81typedef uint32_t td_thr_state_e;
82typedef pthread_t thread_t;
83
84typedef struct
85{
86    pid_t pid;
87    struct ps_prochandle *ph;
88} td_thragent_t;
89
90typedef struct
91{
92    pid_t pid;
93    pid_t tid;
94} td_thrhandle_t;
95
96typedef struct
97{
98    td_event_e event;
99    td_thrhandle_t const * th_p;
100    union {
101        void * data;
102    } msg;
103} td_event_msg_t;
104
105typedef struct
106{
107    uint32_t events;
108} td_thr_events_t;
109
110typedef struct
111{
112    union {
113        void * bptaddr;
114    } u;
115} td_notify_t;
116
117typedef struct
118{
119    td_thr_state_e ti_state;
120    thread_t ti_tid; // pthread's id for the thread
121    int32_t ti_lid; // the kernel's id for the thread
122} td_thrinfo_t;
123
124
125#define td_event_emptyset(set) \
126    (set)->events = 0
127
128#define td_event_fillset(set) \
129    (set)->events = 0xffffffff
130
131#define td_event_addset(set, n) \
132    (set)->events |= (1 << n)
133
134
135typedef int td_thr_iter_f(td_thrhandle_t const *, void *);
136
137
138struct ps_prochandle;
139
140#ifdef __cplusplus
141extern "C"{
142#endif
143
144extern td_err_e td_ta_new(struct ps_prochandle * proc_handle, td_thragent_t ** thread_agent);
145
146extern td_err_e td_ta_delete(td_thragent_t * ta);
147
148extern td_err_e td_ta_set_event(td_thragent_t const * agent, td_thr_events_t * event);
149
150extern td_err_e td_ta_event_addr(td_thragent_t const * agent, td_event_e event, td_notify_t * notify);
151
152extern td_err_e td_ta_clear_event(const td_thragent_t * ta_arg,
153				  td_thr_events_t * event);
154
155extern td_err_e td_ta_event_getmsg(td_thragent_t const * agent, td_event_msg_t * event);
156
157extern td_err_e td_ta_map_lwp2thr(td_thragent_t const * agent, lwpid_t lwpid,
158				  td_thrhandle_t *th);
159
160extern td_err_e td_thr_get_info(td_thrhandle_t const * handle,
161				td_thrinfo_t * info);
162
163extern td_err_e td_thr_event_enable(td_thrhandle_t const * handle,
164				    td_event_e event);
165
166extern td_err_e td_ta_thr_iter(td_thragent_t const * agent, td_thr_iter_f * func, void * cookie,
167                               td_thr_state_e state, int32_t prio, sigset_t * sigmask, uint32_t user_flags);
168
169extern char const ** td_symbol_list(void);
170
171extern td_err_e td_thr_event_enable(td_thrhandle_t const * handle, td_event_e event);
172
173extern td_err_e td_thr_get_info(td_thrhandle_t const * handle, td_thrinfo_t * info);
174
175extern td_err_e td_thr_tls_get_addr(const td_thrhandle_t * th,
176				    psaddr_t map_address, size_t offset,
177				    psaddr_t * address);
178
179#ifdef __cplusplus
180}
181#endif
182
183#endif
184