Commit | Line | Data |
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ce3a066d | 1 | /* Inferior process information for the remote server for GDB. |
e2882c85 | 2 | Copyright (C) 2002-2018 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 | ||
f7667f0d | 33 | struct thread_info * |
95954743 | 34 | add_thread (ptid_t thread_id, void *target_data) |
0d62e5e8 | 35 | { |
8d749320 | 36 | struct thread_info *new_thread = XCNEW (struct thread_info); |
0d62e5e8 | 37 | |
9c80ecd6 | 38 | new_thread->id = thread_id; |
8336d594 | 39 | new_thread->last_resume_kind = resume_continue; |
fc7238bb | 40 | new_thread->last_status.kind = TARGET_WAITKIND_IGNORE; |
0d62e5e8 | 41 | |
9c80ecd6 | 42 | all_threads.push_back (new_thread); |
255e7678 | 43 | |
0bfdf32f GB |
44 | if (current_thread == NULL) |
45 | current_thread = new_thread; | |
ce3a066d | 46 | |
0d62e5e8 | 47 | new_thread->target_data = target_data; |
f7667f0d DE |
48 | |
49 | return new_thread; | |
a06660f7 DJ |
50 | } |
51 | ||
9c80ecd6 | 52 | /* See gdbthread.h. */ |
649ebbca | 53 | |
dae5f5cf | 54 | struct thread_info * |
649ebbca | 55 | get_first_thread (void) |
a06660f7 | 56 | { |
9c80ecd6 SM |
57 | if (!all_threads.empty ()) |
58 | return all_threads.front (); | |
59 | else | |
60 | return NULL; | |
649ebbca | 61 | } |
a06660f7 | 62 | |
649ebbca DE |
63 | struct thread_info * |
64 | find_thread_ptid (ptid_t ptid) | |
65 | { | |
8dc7b443 SM |
66 | return find_thread ([&] (thread_info *thread) { |
67 | return thread->id == ptid; | |
68 | }); | |
dae5f5cf DJ |
69 | } |
70 | ||
96e7a1eb AR |
71 | /* Find a thread associated with the given PROCESS, or NULL if no |
72 | such thread exists. */ | |
73 | ||
74 | static struct thread_info * | |
75 | find_thread_process (const struct process_info *const process) | |
76 | { | |
9179355e | 77 | return find_any_thread_of_pid (process->pid); |
96e7a1eb AR |
78 | } |
79 | ||
34c65914 PA |
80 | /* See gdbthread.h. */ |
81 | ||
82 | struct thread_info * | |
83 | find_any_thread_of_pid (int pid) | |
84 | { | |
4d3bb80e SM |
85 | return find_thread (pid, [] (thread_info *thread) { |
86 | return true; | |
87 | }); | |
34c65914 PA |
88 | } |
89 | ||
0d62e5e8 | 90 | static void |
9c80ecd6 | 91 | free_one_thread (thread_info *thread) |
0d62e5e8 | 92 | { |
6afd337d | 93 | free_register_cache (thread_regcache_data (thread)); |
0d62e5e8 DJ |
94 | free (thread); |
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 SM |
104 | all_threads.remove (thread); |
105 | free_one_thread (thread); | |
96e7a1eb AR |
106 | if (current_thread == thread) |
107 | current_thread = NULL; | |
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 | |
0bfdf32f | 136 | current_thread = NULL; |
255e7678 | 137 | } |
24a09b5f | 138 | |
95954743 PA |
139 | struct process_info * |
140 | add_process (int pid, int attached) | |
141 | { | |
f27866ba | 142 | process_info *process = new process_info (pid, attached); |
95954743 | 143 | |
9179355e | 144 | all_processes.push_back (process); |
95954743 PA |
145 | |
146 | return process; | |
147 | } | |
148 | ||
5091eb23 DE |
149 | /* Remove a process from the common process list and free the memory |
150 | allocated for it. | |
151 | The caller is responsible for freeing private data first. */ | |
152 | ||
95954743 PA |
153 | void |
154 | remove_process (struct process_info *process) | |
155 | { | |
156 | clear_symbol_cache (&process->symbol_cache); | |
157 | free_all_breakpoints (process); | |
96e7a1eb | 158 | gdb_assert (find_thread_process (process) == NULL); |
9179355e | 159 | all_processes.remove (process); |
f27866ba | 160 | delete process; |
95954743 PA |
161 | } |
162 | ||
9179355e | 163 | process_info * |
95954743 PA |
164 | find_process_pid (int pid) |
165 | { | |
9179355e SM |
166 | return find_process ([&] (process_info *process) { |
167 | return process->pid == pid; | |
168 | }); | |
95954743 PA |
169 | } |
170 | ||
9179355e | 171 | /* Get the first process in the process list, or NULL if the list is empty. */ |
3d40fbb5 | 172 | |
9179355e | 173 | process_info * |
3d40fbb5 PA |
174 | get_first_process (void) |
175 | { | |
9179355e SM |
176 | if (!all_processes.empty ()) |
177 | return all_processes.front (); | |
178 | else | |
179 | return NULL; | |
9f767825 DE |
180 | } |
181 | ||
182 | /* Return non-zero if there are any inferiors that we have created | |
183 | (as opposed to attached-to). */ | |
184 | ||
185 | int | |
186 | have_started_inferiors_p (void) | |
187 | { | |
9179355e SM |
188 | return find_process ([] (process_info *process) { |
189 | return !process->attached; | |
190 | }) != NULL; | |
9f767825 DE |
191 | } |
192 | ||
193 | /* Return non-zero if there are any inferiors that we have attached to. */ | |
194 | ||
195 | int | |
196 | have_attached_inferiors_p (void) | |
197 | { | |
9179355e SM |
198 | return find_process ([] (process_info *process) { |
199 | return process->attached; | |
200 | }) != NULL; | |
9f767825 DE |
201 | } |
202 | ||
7fe519cb | 203 | struct process_info * |
63c40ec7 | 204 | get_thread_process (const struct thread_info *thread) |
95954743 | 205 | { |
9c80ecd6 | 206 | return find_process_pid (thread->id.pid ()); |
95954743 PA |
207 | } |
208 | ||
209 | struct process_info * | |
210 | current_process (void) | |
211 | { | |
0bfdf32f GB |
212 | gdb_assert (current_thread != NULL); |
213 | return get_thread_process (current_thread); | |
95954743 | 214 | } |
984a2c04 | 215 | |
043a4934 SDJ |
216 | /* See common/common-gdbthread.h. */ |
217 | ||
218 | void | |
219 | switch_to_thread (ptid_t ptid) | |
220 | { | |
75352e28 SDJ |
221 | gdb_assert (ptid != minus_one_ptid); |
222 | current_thread = find_thread_ptid (ptid); | |
043a4934 | 223 | } |
d092c5a2 SDJ |
224 | |
225 | /* See common/common-inferior.h. */ | |
226 | ||
227 | const char * | |
228 | get_inferior_cwd () | |
229 | { | |
230 | return current_inferior_cwd; | |
231 | } | |
bc3b087d SDJ |
232 | |
233 | /* See common/common-inferior.h. */ | |
234 | ||
235 | void | |
236 | set_inferior_cwd (const char *cwd) | |
237 | { | |
238 | xfree ((void *) current_inferior_cwd); | |
239 | if (cwd != NULL) | |
240 | current_inferior_cwd = xstrdup (cwd); | |
241 | else | |
242 | current_inferior_cwd = NULL; | |
243 | } |