Commit | Line | Data |
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ce3a066d | 1 | /* Inferior process information for the remote server for GDB. |
61baf725 | 2 | Copyright (C) 2002-2017 Free Software Foundation, Inc. |
ce3a066d DJ |
3 | |
4 | Contributed by MontaVista Software. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
ce3a066d DJ |
11 | (at your option) any later version. |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
ce3a066d | 20 | |
ce3a066d | 21 | #include "server.h" |
623b6bdf | 22 | #include "gdbthread.h" |
799cdc37 | 23 | #include "dll.h" |
ce3a066d | 24 | |
9179355e | 25 | std::list<process_info *> all_processes; |
9c80ecd6 | 26 | std::list<thread_info *> all_threads; |
0d62e5e8 | 27 | |
0bfdf32f | 28 | struct thread_info *current_thread; |
0d62e5e8 | 29 | |
d092c5a2 SDJ |
30 | /* The current working directory used to start the inferior. */ |
31 | static const char *current_inferior_cwd = NULL; | |
32 | ||
9c80ecd6 SM |
33 | thread_info * |
34 | find_inferior (std::list<thread_info *> *thread_list, | |
35 | int (*func) (thread_info *, void *), | |
36 | void *arg) | |
0d62e5e8 | 37 | { |
9c80ecd6 | 38 | gdb_assert (thread_list == &all_threads); |
0d62e5e8 | 39 | |
9c80ecd6 SM |
40 | return find_thread ([&] (thread_info *thread) { |
41 | return func (thread, arg); | |
42 | }); | |
43 | } | |
9f767825 | 44 | |
9c80ecd6 SM |
45 | thread_info * |
46 | find_inferior_id (std::list<thread_info *> *thread_list, ptid_t id) | |
0d62e5e8 | 47 | { |
9c80ecd6 | 48 | gdb_assert (thread_list == &all_threads); |
ce3a066d | 49 | |
9c80ecd6 SM |
50 | return find_thread ([&] (thread_info *thread) { |
51 | return thread->id == id; | |
52 | }); | |
53 | } | |
649ebbca | 54 | |
9c80ecd6 SM |
55 | thread_info * |
56 | find_inferior_in_random (std::list<thread_info *> *thread_list, | |
57 | int (*func) (thread_info *, void *), | |
58 | void *arg) | |
649ebbca | 59 | { |
9c80ecd6 SM |
60 | gdb_assert (thread_list == &all_threads); |
61 | ||
62 | return find_thread_in_random ([&] (thread_info *thread) { | |
63 | return func (thread, arg); | |
64 | }); | |
649ebbca DE |
65 | } |
66 | ||
0d62e5e8 | 67 | void |
9c80ecd6 SM |
68 | for_each_inferior (std::list<thread_info *> *thread_list, |
69 | void (*action) (thread_info *)) | |
0d62e5e8 | 70 | { |
9c80ecd6 | 71 | gdb_assert (thread_list == &all_threads); |
0d62e5e8 | 72 | |
9c80ecd6 SM |
73 | for_each_thread ([&] (thread_info *thread) { |
74 | action (thread); | |
75 | }); | |
76 | } | |
ce3a066d | 77 | |
9c80ecd6 SM |
78 | void |
79 | for_each_inferior_with_data (std::list<thread_info *> *thread_list, | |
80 | void (*action) (thread_info *, void *), | |
81 | void *data) | |
82 | { | |
83 | gdb_assert (thread_list == &all_threads); | |
0d62e5e8 | 84 | |
9c80ecd6 SM |
85 | for_each_thread ([&] (thread_info *thread) { |
86 | action (thread, data); | |
87 | }); | |
0d62e5e8 DJ |
88 | } |
89 | ||
f7667f0d | 90 | struct thread_info * |
95954743 | 91 | add_thread (ptid_t thread_id, void *target_data) |
0d62e5e8 | 92 | { |
8d749320 | 93 | struct thread_info *new_thread = XCNEW (struct thread_info); |
0d62e5e8 | 94 | |
9c80ecd6 | 95 | new_thread->id = thread_id; |
8336d594 | 96 | new_thread->last_resume_kind = resume_continue; |
fc7238bb | 97 | new_thread->last_status.kind = TARGET_WAITKIND_IGNORE; |
0d62e5e8 | 98 | |
9c80ecd6 | 99 | all_threads.push_back (new_thread); |
255e7678 | 100 | |
0bfdf32f GB |
101 | if (current_thread == NULL) |
102 | current_thread = new_thread; | |
ce3a066d | 103 | |
0d62e5e8 | 104 | new_thread->target_data = target_data; |
f7667f0d DE |
105 | |
106 | return new_thread; | |
a06660f7 DJ |
107 | } |
108 | ||
9c80ecd6 | 109 | /* See gdbthread.h. */ |
649ebbca | 110 | |
dae5f5cf | 111 | struct thread_info * |
649ebbca | 112 | get_first_thread (void) |
a06660f7 | 113 | { |
9c80ecd6 SM |
114 | if (!all_threads.empty ()) |
115 | return all_threads.front (); | |
116 | else | |
117 | return NULL; | |
649ebbca | 118 | } |
a06660f7 | 119 | |
649ebbca DE |
120 | struct thread_info * |
121 | find_thread_ptid (ptid_t ptid) | |
122 | { | |
123 | return (struct thread_info *) find_inferior_id (&all_threads, ptid); | |
dae5f5cf DJ |
124 | } |
125 | ||
96e7a1eb AR |
126 | /* Find a thread associated with the given PROCESS, or NULL if no |
127 | such thread exists. */ | |
128 | ||
129 | static struct thread_info * | |
130 | find_thread_process (const struct process_info *const process) | |
131 | { | |
9179355e | 132 | return find_any_thread_of_pid (process->pid); |
96e7a1eb AR |
133 | } |
134 | ||
34c65914 PA |
135 | /* See gdbthread.h. */ |
136 | ||
137 | struct thread_info * | |
138 | find_any_thread_of_pid (int pid) | |
139 | { | |
4d3bb80e SM |
140 | return find_thread (pid, [] (thread_info *thread) { |
141 | return true; | |
142 | }); | |
34c65914 PA |
143 | } |
144 | ||
0d62e5e8 | 145 | static void |
9c80ecd6 | 146 | free_one_thread (thread_info *thread) |
0d62e5e8 | 147 | { |
6afd337d | 148 | free_register_cache (thread_regcache_data (thread)); |
0d62e5e8 DJ |
149 | free (thread); |
150 | } | |
151 | ||
152 | void | |
153 | remove_thread (struct thread_info *thread) | |
154 | { | |
9accd112 MM |
155 | if (thread->btrace != NULL) |
156 | target_disable_btrace (thread->btrace); | |
157 | ||
465a859e | 158 | discard_queued_stop_replies (ptid_of (thread)); |
9c80ecd6 SM |
159 | all_threads.remove (thread); |
160 | free_one_thread (thread); | |
96e7a1eb AR |
161 | if (current_thread == thread) |
162 | current_thread = NULL; | |
ce3a066d DJ |
163 | } |
164 | ||
611cb4a5 | 165 | void * |
6afd337d | 166 | thread_target_data (struct thread_info *thread) |
611cb4a5 | 167 | { |
6afd337d | 168 | return thread->target_data; |
611cb4a5 DJ |
169 | } |
170 | ||
a44892be | 171 | struct regcache * |
6afd337d | 172 | thread_regcache_data (struct thread_info *thread) |
c04a1aa8 | 173 | { |
6afd337d | 174 | return thread->regcache_data; |
c04a1aa8 DJ |
175 | } |
176 | ||
177 | void | |
6afd337d | 178 | set_thread_regcache_data (struct thread_info *thread, struct regcache *data) |
c04a1aa8 | 179 | { |
6afd337d | 180 | thread->regcache_data = data; |
c04a1aa8 | 181 | } |
255e7678 | 182 | |
255e7678 DJ |
183 | void |
184 | clear_inferiors (void) | |
185 | { | |
186 | for_each_inferior (&all_threads, free_one_thread); | |
9c80ecd6 | 187 | all_threads.clear (); |
bf4c19f7 YQ |
188 | |
189 | clear_dlls (); | |
7284e1be | 190 | |
0bfdf32f | 191 | current_thread = NULL; |
255e7678 | 192 | } |
24a09b5f | 193 | |
95954743 PA |
194 | struct process_info * |
195 | add_process (int pid, int attached) | |
196 | { | |
8d749320 | 197 | struct process_info *process = XCNEW (struct process_info); |
95954743 | 198 | |
9179355e | 199 | process->pid = pid; |
95954743 PA |
200 | process->attached = attached; |
201 | ||
9179355e | 202 | all_processes.push_back (process); |
95954743 PA |
203 | |
204 | return process; | |
205 | } | |
206 | ||
5091eb23 DE |
207 | /* Remove a process from the common process list and free the memory |
208 | allocated for it. | |
209 | The caller is responsible for freeing private data first. */ | |
210 | ||
95954743 PA |
211 | void |
212 | remove_process (struct process_info *process) | |
213 | { | |
214 | clear_symbol_cache (&process->symbol_cache); | |
215 | free_all_breakpoints (process); | |
96e7a1eb | 216 | gdb_assert (find_thread_process (process) == NULL); |
9179355e | 217 | all_processes.remove (process); |
82075af2 | 218 | VEC_free (int, process->syscalls_to_catch); |
5091eb23 | 219 | free (process); |
95954743 PA |
220 | } |
221 | ||
9179355e | 222 | process_info * |
95954743 PA |
223 | find_process_pid (int pid) |
224 | { | |
9179355e SM |
225 | return find_process ([&] (process_info *process) { |
226 | return process->pid == pid; | |
227 | }); | |
95954743 PA |
228 | } |
229 | ||
9179355e | 230 | /* Get the first process in the process list, or NULL if the list is empty. */ |
3d40fbb5 | 231 | |
9179355e | 232 | process_info * |
3d40fbb5 PA |
233 | get_first_process (void) |
234 | { | |
9179355e SM |
235 | if (!all_processes.empty ()) |
236 | return all_processes.front (); | |
237 | else | |
238 | return NULL; | |
9f767825 DE |
239 | } |
240 | ||
241 | /* Return non-zero if there are any inferiors that we have created | |
242 | (as opposed to attached-to). */ | |
243 | ||
244 | int | |
245 | have_started_inferiors_p (void) | |
246 | { | |
9179355e SM |
247 | return find_process ([] (process_info *process) { |
248 | return !process->attached; | |
249 | }) != NULL; | |
9f767825 DE |
250 | } |
251 | ||
252 | /* Return non-zero if there are any inferiors that we have attached to. */ | |
253 | ||
254 | int | |
255 | have_attached_inferiors_p (void) | |
256 | { | |
9179355e SM |
257 | return find_process ([] (process_info *process) { |
258 | return process->attached; | |
259 | }) != NULL; | |
9f767825 DE |
260 | } |
261 | ||
7fe519cb | 262 | struct process_info * |
63c40ec7 | 263 | get_thread_process (const struct thread_info *thread) |
95954743 | 264 | { |
9c80ecd6 | 265 | return find_process_pid (thread->id.pid ()); |
95954743 PA |
266 | } |
267 | ||
268 | struct process_info * | |
269 | current_process (void) | |
270 | { | |
0bfdf32f GB |
271 | gdb_assert (current_thread != NULL); |
272 | return get_thread_process (current_thread); | |
95954743 | 273 | } |
984a2c04 YQ |
274 | |
275 | static void | |
276 | do_restore_current_thread_cleanup (void *arg) | |
277 | { | |
278 | current_thread = (struct thread_info *) arg; | |
279 | } | |
280 | ||
281 | struct cleanup * | |
282 | make_cleanup_restore_current_thread (void) | |
283 | { | |
284 | return make_cleanup (do_restore_current_thread_cleanup, current_thread); | |
285 | } | |
043a4934 SDJ |
286 | |
287 | /* See common/common-gdbthread.h. */ | |
288 | ||
289 | void | |
290 | switch_to_thread (ptid_t ptid) | |
291 | { | |
75352e28 SDJ |
292 | gdb_assert (ptid != minus_one_ptid); |
293 | current_thread = find_thread_ptid (ptid); | |
043a4934 | 294 | } |
d092c5a2 SDJ |
295 | |
296 | /* See common/common-inferior.h. */ | |
297 | ||
298 | const char * | |
299 | get_inferior_cwd () | |
300 | { | |
301 | return current_inferior_cwd; | |
302 | } | |
bc3b087d SDJ |
303 | |
304 | /* See common/common-inferior.h. */ | |
305 | ||
306 | void | |
307 | set_inferior_cwd (const char *cwd) | |
308 | { | |
309 | xfree ((void *) current_inferior_cwd); | |
310 | if (cwd != NULL) | |
311 | current_inferior_cwd = xstrdup (cwd); | |
312 | else | |
313 | current_inferior_cwd = NULL; | |
314 | } |