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ce3a066d | 1 | /* Inferior process information for the remote server for GDB. |
1d506c26 | 2 | Copyright (C) 2002-2024 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 | |
89e94ec9 | 21 | #include "gdbsupport/common-inferior.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 | |
7f8acede PA |
28 | /* The current process. */ |
29 | static process_info *current_process_; | |
30 | ||
31 | /* The current thread. This is either a thread of CURRENT_PROCESS, or | |
32 | NULL. */ | |
0bfdf32f | 33 | struct thread_info *current_thread; |
0d62e5e8 | 34 | |
11bd012e SM |
35 | /* The current working directory used to start the inferior. |
36 | ||
37 | Empty if not specified. */ | |
38 | static std::string current_inferior_cwd; | |
d092c5a2 | 39 | |
f7667f0d | 40 | struct thread_info * |
95954743 | 41 | add_thread (ptid_t thread_id, void *target_data) |
0d62e5e8 | 42 | { |
d2f325df | 43 | thread_info *new_thread = new thread_info (thread_id, target_data); |
0d62e5e8 | 44 | |
9c80ecd6 | 45 | all_threads.push_back (new_thread); |
255e7678 | 46 | |
0bfdf32f | 47 | if (current_thread == NULL) |
24583e45 | 48 | switch_to_thread (new_thread); |
ce3a066d | 49 | |
f7667f0d | 50 | return new_thread; |
a06660f7 DJ |
51 | } |
52 | ||
9c80ecd6 | 53 | /* See gdbthread.h. */ |
649ebbca | 54 | |
dae5f5cf | 55 | struct thread_info * |
649ebbca | 56 | get_first_thread (void) |
a06660f7 | 57 | { |
9c80ecd6 SM |
58 | if (!all_threads.empty ()) |
59 | return all_threads.front (); | |
60 | else | |
61 | return NULL; | |
649ebbca | 62 | } |
a06660f7 | 63 | |
649ebbca DE |
64 | struct thread_info * |
65 | find_thread_ptid (ptid_t ptid) | |
66 | { | |
8dc7b443 SM |
67 | return find_thread ([&] (thread_info *thread) { |
68 | return thread->id == ptid; | |
69 | }); | |
dae5f5cf DJ |
70 | } |
71 | ||
96e7a1eb AR |
72 | /* Find a thread associated with the given PROCESS, or NULL if no |
73 | such thread exists. */ | |
74 | ||
75 | static struct thread_info * | |
76 | find_thread_process (const struct process_info *const process) | |
77 | { | |
9179355e | 78 | return find_any_thread_of_pid (process->pid); |
96e7a1eb AR |
79 | } |
80 | ||
34c65914 PA |
81 | /* See gdbthread.h. */ |
82 | ||
83 | struct thread_info * | |
84 | find_any_thread_of_pid (int pid) | |
85 | { | |
4d3bb80e SM |
86 | return find_thread (pid, [] (thread_info *thread) { |
87 | return true; | |
88 | }); | |
34c65914 PA |
89 | } |
90 | ||
0d62e5e8 | 91 | static void |
9c80ecd6 | 92 | free_one_thread (thread_info *thread) |
0d62e5e8 | 93 | { |
d2f325df | 94 | delete thread; |
0d62e5e8 DJ |
95 | } |
96 | ||
97 | void | |
98 | remove_thread (struct thread_info *thread) | |
99 | { | |
9accd112 MM |
100 | if (thread->btrace != NULL) |
101 | target_disable_btrace (thread->btrace); | |
102 | ||
465a859e | 103 | discard_queued_stop_replies (ptid_of (thread)); |
9c80ecd6 | 104 | all_threads.remove (thread); |
96e7a1eb | 105 | if (current_thread == thread) |
24583e45 | 106 | switch_to_thread (nullptr); |
a9b45cb7 | 107 | free_one_thread (thread); |
ce3a066d DJ |
108 | } |
109 | ||
611cb4a5 | 110 | void * |
6afd337d | 111 | thread_target_data (struct thread_info *thread) |
611cb4a5 | 112 | { |
6afd337d | 113 | return thread->target_data; |
611cb4a5 DJ |
114 | } |
115 | ||
a44892be | 116 | struct regcache * |
6afd337d | 117 | thread_regcache_data (struct thread_info *thread) |
c04a1aa8 | 118 | { |
6afd337d | 119 | return thread->regcache_data; |
c04a1aa8 DJ |
120 | } |
121 | ||
122 | void | |
6afd337d | 123 | set_thread_regcache_data (struct thread_info *thread, struct regcache *data) |
c04a1aa8 | 124 | { |
6afd337d | 125 | thread->regcache_data = data; |
c04a1aa8 | 126 | } |
255e7678 | 127 | |
255e7678 DJ |
128 | void |
129 | clear_inferiors (void) | |
130 | { | |
f0045347 | 131 | for_each_thread (free_one_thread); |
9c80ecd6 | 132 | all_threads.clear (); |
bf4c19f7 YQ |
133 | |
134 | clear_dlls (); | |
7284e1be | 135 | |
24583e45 | 136 | switch_to_thread (nullptr); |
7f8acede | 137 | current_process_ = nullptr; |
255e7678 | 138 | } |
24a09b5f | 139 | |
95954743 PA |
140 | struct process_info * |
141 | add_process (int pid, int attached) | |
142 | { | |
f27866ba | 143 | process_info *process = new process_info (pid, attached); |
95954743 | 144 | |
9179355e | 145 | all_processes.push_back (process); |
95954743 PA |
146 | |
147 | return process; | |
148 | } | |
149 | ||
5091eb23 DE |
150 | /* Remove a process from the common process list and free the memory |
151 | allocated for it. | |
152 | The caller is responsible for freeing private data first. */ | |
153 | ||
95954743 PA |
154 | void |
155 | remove_process (struct process_info *process) | |
156 | { | |
157 | clear_symbol_cache (&process->symbol_cache); | |
158 | free_all_breakpoints (process); | |
96e7a1eb | 159 | gdb_assert (find_thread_process (process) == NULL); |
9179355e | 160 | all_processes.remove (process); |
7f8acede PA |
161 | if (current_process () == process) |
162 | switch_to_process (nullptr); | |
f27866ba | 163 | delete process; |
95954743 PA |
164 | } |
165 | ||
9179355e | 166 | process_info * |
95954743 PA |
167 | find_process_pid (int pid) |
168 | { | |
9179355e SM |
169 | return find_process ([&] (process_info *process) { |
170 | return process->pid == pid; | |
171 | }); | |
95954743 PA |
172 | } |
173 | ||
9179355e | 174 | /* Get the first process in the process list, or NULL if the list is empty. */ |
3d40fbb5 | 175 | |
9179355e | 176 | process_info * |
3d40fbb5 PA |
177 | get_first_process (void) |
178 | { | |
9179355e SM |
179 | if (!all_processes.empty ()) |
180 | return all_processes.front (); | |
181 | else | |
182 | return NULL; | |
9f767825 DE |
183 | } |
184 | ||
185 | /* Return non-zero if there are any inferiors that we have created | |
186 | (as opposed to attached-to). */ | |
187 | ||
188 | int | |
189 | have_started_inferiors_p (void) | |
190 | { | |
9179355e SM |
191 | return find_process ([] (process_info *process) { |
192 | return !process->attached; | |
193 | }) != NULL; | |
9f767825 DE |
194 | } |
195 | ||
196 | /* Return non-zero if there are any inferiors that we have attached to. */ | |
197 | ||
198 | int | |
199 | have_attached_inferiors_p (void) | |
200 | { | |
9179355e SM |
201 | return find_process ([] (process_info *process) { |
202 | return process->attached; | |
203 | }) != NULL; | |
9f767825 DE |
204 | } |
205 | ||
7fe519cb | 206 | struct process_info * |
63c40ec7 | 207 | get_thread_process (const struct thread_info *thread) |
95954743 | 208 | { |
9c80ecd6 | 209 | return find_process_pid (thread->id.pid ()); |
95954743 PA |
210 | } |
211 | ||
212 | struct process_info * | |
213 | current_process (void) | |
214 | { | |
7f8acede | 215 | return current_process_; |
95954743 | 216 | } |
984a2c04 | 217 | |
268a13a5 | 218 | /* See gdbsupport/common-gdbthread.h. */ |
043a4934 SDJ |
219 | |
220 | void | |
5b6d1e4f | 221 | switch_to_thread (process_stratum_target *ops, ptid_t ptid) |
043a4934 | 222 | { |
75352e28 | 223 | gdb_assert (ptid != minus_one_ptid); |
24583e45 | 224 | switch_to_thread (find_thread_ptid (ptid)); |
043a4934 | 225 | } |
d092c5a2 | 226 | |
f24791b7 TBA |
227 | /* See gdbthread.h. */ |
228 | ||
229 | void | |
230 | switch_to_thread (thread_info *thread) | |
231 | { | |
7f8acede PA |
232 | if (thread != nullptr) |
233 | current_process_ = get_thread_process (thread); | |
234 | else | |
235 | current_process_ = nullptr; | |
f24791b7 TBA |
236 | current_thread = thread; |
237 | } | |
238 | ||
028a4603 PA |
239 | /* See inferiors.h. */ |
240 | ||
241 | void | |
242 | switch_to_process (process_info *proc) | |
243 | { | |
7f8acede PA |
244 | current_process_ = proc; |
245 | current_thread = nullptr; | |
028a4603 PA |
246 | } |
247 | ||
268a13a5 | 248 | /* See gdbsupport/common-inferior.h. */ |
d092c5a2 | 249 | |
11bd012e | 250 | const std::string & |
d092c5a2 SDJ |
251 | get_inferior_cwd () |
252 | { | |
253 | return current_inferior_cwd; | |
254 | } | |
bc3b087d | 255 | |
5b8bf2e7 | 256 | /* See inferiors.h. */ |
bc3b087d SDJ |
257 | |
258 | void | |
11bd012e | 259 | set_inferior_cwd (std::string cwd) |
bc3b087d | 260 | { |
11bd012e | 261 | current_inferior_cwd = std::move (cwd); |
bc3b087d | 262 | } |
f24791b7 TBA |
263 | |
264 | scoped_restore_current_thread::scoped_restore_current_thread () | |
265 | { | |
7f8acede | 266 | m_process = current_process_; |
f24791b7 TBA |
267 | m_thread = current_thread; |
268 | } | |
269 | ||
270 | scoped_restore_current_thread::~scoped_restore_current_thread () | |
271 | { | |
272 | if (m_dont_restore) | |
273 | return; | |
274 | ||
7f8acede PA |
275 | if (m_thread != nullptr) |
276 | switch_to_thread (m_thread); | |
277 | else | |
278 | switch_to_process (m_process); | |
f24791b7 | 279 | } |