Commit | Line | Data |
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c906108c SS |
1 | /* Variables that describe the inferior process running under GDB: |
2 | Where it is, why it stopped, and how to step it. | |
1bac305b | 3 | |
b811d2c2 | 4 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
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 |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
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. | |
c906108c | 17 | |
c5aa993b | 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/>. */ |
c906108c SS |
20 | |
21 | #if !defined (INFERIOR_H) | |
22 | #define INFERIOR_H 1 | |
23 | ||
1e7c1b22 TV |
24 | #include <exception> |
25 | ||
da3331ec AC |
26 | struct target_waitstatus; |
27 | struct frame_info; | |
28 | struct ui_file; | |
29 | struct type; | |
67a2b77e | 30 | struct gdbarch; |
72cec141 | 31 | struct regcache; |
b77209e0 | 32 | struct ui_out; |
7e1789f5 | 33 | struct terminal_info; |
6ecd4729 | 34 | struct target_desc_info; |
0550c955 | 35 | struct continuation; |
3a3fd0fd | 36 | struct inferior; |
00431a78 | 37 | struct thread_info; |
67a2b77e | 38 | |
c906108c SS |
39 | /* For bpstat. */ |
40 | #include "breakpoint.h" | |
41 | ||
2ea28649 | 42 | /* For enum gdb_signal. */ |
c906108c SS |
43 | #include "target.h" |
44 | ||
aa0cd9c1 AC |
45 | /* For struct frame_id. */ |
46 | #include "frame.h" | |
47 | ||
9a6c7d9c | 48 | /* For gdb_environ. */ |
268a13a5 | 49 | #include "gdbsupport/environ.h" |
9a6c7d9c | 50 | |
6c95b8df | 51 | #include "progspace.h" |
8e260fc0 | 52 | #include "registry.h" |
6c95b8df | 53 | |
b15cc25c | 54 | #include "symfile-add-flags.h" |
268a13a5 TT |
55 | #include "gdbsupport/refcounted-object.h" |
56 | #include "gdbsupport/forward-scope-exit.h" | |
277474ee | 57 | #include "gdbsupport/gdb_unique_ptr.h" |
b15cc25c | 58 | |
268a13a5 | 59 | #include "gdbsupport/common-inferior.h" |
08036331 | 60 | #include "gdbthread.h" |
2090129c | 61 | |
5b6d1e4f PA |
62 | #include "process-stratum-target.h" |
63 | ||
16c381f0 JK |
64 | struct infcall_suspend_state; |
65 | struct infcall_control_state; | |
7a292a7a | 66 | |
16c381f0 JK |
67 | extern void restore_infcall_suspend_state (struct infcall_suspend_state *); |
68 | extern void restore_infcall_control_state (struct infcall_control_state *); | |
b89667eb | 69 | |
c7c4d3fa TT |
70 | /* A deleter for infcall_suspend_state that calls |
71 | restore_infcall_suspend_state. */ | |
72 | struct infcall_suspend_state_deleter | |
73 | { | |
74 | void operator() (struct infcall_suspend_state *state) const | |
75 | { | |
ee3c5f89 PW |
76 | try |
77 | { | |
78 | restore_infcall_suspend_state (state); | |
79 | } | |
80 | catch (const gdb_exception_error &e) | |
81 | { | |
82 | /* If we are restoring the inferior state due to an exception, | |
83 | some error message will be printed. So, only warn the user | |
84 | when we cannot restore during normal execution. */ | |
1e7c1b22 TV |
85 | bool unwinding; |
86 | #if __cpp_lib_uncaught_exceptions | |
87 | unwinding = std::uncaught_exceptions () > 0; | |
88 | #else | |
89 | unwinding = std::uncaught_exception (); | |
90 | #endif | |
91 | if (!unwinding) | |
ee3c5f89 PW |
92 | warning (_("Failed to restore inferior state: %s"), e.what ()); |
93 | } | |
c7c4d3fa TT |
94 | } |
95 | }; | |
96 | ||
97 | /* A unique_ptr specialization for infcall_suspend_state. */ | |
98 | typedef std::unique_ptr<infcall_suspend_state, infcall_suspend_state_deleter> | |
99 | infcall_suspend_state_up; | |
100 | ||
cb524840 TT |
101 | extern infcall_suspend_state_up save_infcall_suspend_state (); |
102 | ||
c7c4d3fa TT |
103 | /* A deleter for infcall_control_state that calls |
104 | restore_infcall_control_state. */ | |
105 | struct infcall_control_state_deleter | |
106 | { | |
107 | void operator() (struct infcall_control_state *state) const | |
108 | { | |
109 | restore_infcall_control_state (state); | |
110 | } | |
111 | }; | |
112 | ||
113 | /* A unique_ptr specialization for infcall_control_state. */ | |
114 | typedef std::unique_ptr<infcall_control_state, infcall_control_state_deleter> | |
115 | infcall_control_state_up; | |
b89667eb | 116 | |
cb524840 TT |
117 | extern infcall_control_state_up save_infcall_control_state (); |
118 | ||
16c381f0 JK |
119 | extern void discard_infcall_suspend_state (struct infcall_suspend_state *); |
120 | extern void discard_infcall_control_state (struct infcall_control_state *); | |
7a292a7a | 121 | |
daf6667d | 122 | extern readonly_detached_regcache * |
16c381f0 | 123 | get_infcall_suspend_state_regcache (struct infcall_suspend_state *); |
b89667eb | 124 | |
a14ed312 | 125 | extern void set_sigint_trap (void); |
c906108c | 126 | |
a14ed312 | 127 | extern void clear_sigint_trap (void); |
c906108c | 128 | |
39f77062 | 129 | /* Collected pid, tid, etc. of the debugged inferior. When there's |
e99b03dc | 130 | no inferior, inferior_ptid.pid () will be 0. */ |
c906108c | 131 | |
39f77062 | 132 | extern ptid_t inferior_ptid; |
c906108c | 133 | |
a14ed312 | 134 | extern void generic_mourn_inferior (void); |
c906108c | 135 | |
9898f801 UW |
136 | extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch, |
137 | struct type *type, | |
b60c417a | 138 | const gdb_byte *buf); |
9898f801 UW |
139 | extern void unsigned_address_to_pointer (struct gdbarch *gdbarch, |
140 | struct type *type, gdb_byte *buf, | |
ac2e2ef7 | 141 | CORE_ADDR addr); |
9898f801 UW |
142 | extern CORE_ADDR signed_pointer_to_address (struct gdbarch *gdbarch, |
143 | struct type *type, | |
b60c417a | 144 | const gdb_byte *buf); |
9898f801 UW |
145 | extern void address_to_signed_pointer (struct gdbarch *gdbarch, |
146 | struct type *type, gdb_byte *buf, | |
ac2e2ef7 | 147 | CORE_ADDR addr); |
4478b372 | 148 | |
a14ed312 | 149 | extern void reopen_exec_file (void); |
c906108c | 150 | |
c906108c SS |
151 | /* From misc files */ |
152 | ||
0ab7a791 AC |
153 | extern void default_print_registers_info (struct gdbarch *gdbarch, |
154 | struct ui_file *file, | |
155 | struct frame_info *frame, | |
156 | int regnum, int all); | |
666e11c5 | 157 | |
cc86d1cb YQ |
158 | /* Default implementation of gdbarch_print_float_info. Print |
159 | the values of all floating point registers. */ | |
160 | ||
161 | extern void default_print_float_info (struct gdbarch *gdbarch, | |
162 | struct ui_file *file, | |
163 | struct frame_info *frame, | |
164 | const char *args); | |
165 | ||
0a4f40a2 | 166 | extern void child_terminal_info (struct target_ops *self, const char *, int); |
c906108c | 167 | |
d6b64346 PA |
168 | extern void child_terminal_ours (struct target_ops *self); |
169 | ||
170 | extern void child_terminal_ours_for_output (struct target_ops *self); | |
c906108c | 171 | |
d6b64346 | 172 | extern void child_terminal_inferior (struct target_ops *self); |
c906108c | 173 | |
e671cd59 PA |
174 | extern void child_terminal_save_inferior (struct target_ops *self); |
175 | ||
d6b64346 | 176 | extern void child_terminal_init (struct target_ops *self); |
c906108c | 177 | |
d6b64346 | 178 | extern void child_terminal_init_with_pgrp (int pgrp); |
c906108c | 179 | |
e671cd59 PA |
180 | extern void child_pass_ctrlc (struct target_ops *self); |
181 | ||
182 | extern void child_interrupt (struct target_ops *self); | |
183 | ||
c906108c SS |
184 | /* From fork-child.c */ |
185 | ||
2090129c SDJ |
186 | /* Helper function to call STARTUP_INFERIOR with PID and NUM_TRAPS. |
187 | This function already calls set_executing. Return the ptid_t from | |
188 | STARTUP_INFERIOR. */ | |
189 | extern ptid_t gdb_startup_inferior (pid_t pid, int num_traps); | |
c906108c | 190 | |
c906108c SS |
191 | /* From infcmd.c */ |
192 | ||
6efcd9a8 PA |
193 | /* Initial inferior setup. Determines the exec file is not yet known, |
194 | takes any necessary post-attaching actions, fetches the target | |
195 | description and syncs the shared library list. */ | |
196 | ||
197 | extern void setup_inferior (int from_tty); | |
198 | ||
a7aba266 | 199 | extern void post_create_inferior (int from_tty); |
281b533b | 200 | |
0b39b52e | 201 | extern void attach_command (const char *, int); |
c906108c | 202 | |
cbaaa0ca | 203 | extern const char *get_inferior_args (void); |
07091751 | 204 | |
0b39b52e | 205 | extern void set_inferior_args (const char *); |
07091751 | 206 | |
552c04a7 TT |
207 | extern void set_inferior_args_vector (int, char **); |
208 | ||
1d12d88f | 209 | extern void registers_info (const char *, int); |
36dc181b | 210 | |
77ebaa5a VP |
211 | extern void continue_1 (int all_threads); |
212 | ||
5b6d1e4f | 213 | extern void interrupt_target_1 (bool all_threads); |
77ebaa5a | 214 | |
5419bdae TT |
215 | using delete_longjmp_breakpoint_cleanup |
216 | = FORWARD_SCOPE_EXIT (delete_longjmp_breakpoint); | |
186c406b | 217 | |
981a3fb3 | 218 | extern void detach_command (const char *, int); |
6418d433 | 219 | |
75cbc781 | 220 | extern void notice_new_inferior (struct thread_info *, int, int); |
1941c569 | 221 | |
0700e23e PA |
222 | extern struct value *get_return_value (struct value *function, |
223 | struct type *value_type); | |
cc72b2a2 | 224 | |
329ea579 PA |
225 | /* Prepare for execution command. TARGET is the target that will run |
226 | the command. BACKGROUND determines whether this is a foreground | |
227 | (synchronous) or background (asynchronous) command. */ | |
228 | ||
229 | extern void prepare_execution_command (struct target_ops *target, | |
230 | int background); | |
231 | ||
c906108c SS |
232 | /* Nonzero if stopped due to completion of a stack dummy routine. */ |
233 | ||
aa7d318d | 234 | extern enum stop_stack_kind stop_stack_dummy; |
c906108c SS |
235 | |
236 | /* Nonzero if program stopped due to a random (unexpected) signal in | |
237 | inferior process. */ | |
238 | ||
239 | extern int stopped_by_random_signal; | |
240 | ||
f67c0c91 SDJ |
241 | /* Print notices on inferior events (attach, detach, etc.), set with |
242 | `set print inferior-events'. */ | |
491144b5 | 243 | extern bool print_inferior_events; |
f67c0c91 | 244 | |
b0f4b84b DJ |
245 | /* Anything but NO_STOP_QUIETLY means we expect a trap and the caller |
246 | will handle it themselves. STOP_QUIETLY is used when running in | |
247 | the shell before the child program has been exec'd and when running | |
248 | through shared library loading. STOP_QUIETLY_REMOTE is used when | |
249 | setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP | |
250 | except that there is no need to hide a signal. */ | |
c54cfec8 | 251 | |
7c0bc051 DE |
252 | /* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach. |
253 | When doing an attach, the kernel stops the debuggee with a SIGSTOP. | |
254 | On newer GNU/Linux kernels (>= 2.5.61) the handling of SIGSTOP for | |
255 | a ptraced process has changed. Earlier versions of the kernel | |
256 | would ignore these SIGSTOPs, while now SIGSTOP is treated like any | |
257 | other signal, i.e. it is not muffled. | |
258 | ||
c54cfec8 EZ |
259 | If the gdb user does a 'continue' after the 'attach', gdb passes |
260 | the global variable stop_signal (which stores the signal from the | |
261 | attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is | |
262 | problematic, because the kernel doesn't ignore such SIGSTOP | |
1777feb0 | 263 | now. I.e. it is reported back to gdb, which in turn presents it |
c54cfec8 | 264 | back to the user. |
7c0bc051 | 265 | |
c54cfec8 EZ |
266 | To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows |
267 | gdb to clear the value of stop_signal after the attach, so that it | |
268 | is not passed back down to the kernel. */ | |
269 | ||
270 | enum stop_kind | |
271 | { | |
272 | NO_STOP_QUIETLY = 0, | |
273 | STOP_QUIETLY, | |
b0f4b84b | 274 | STOP_QUIETLY_REMOTE, |
c54cfec8 EZ |
275 | STOP_QUIETLY_NO_SIGSTOP |
276 | }; | |
c906108c | 277 | |
c906108c | 278 | \f |
faaf634c | 279 | /* Possible values for gdbarch_call_dummy_location. */ |
c906108c | 280 | #define ON_STACK 1 |
c906108c SS |
281 | #define AT_ENTRY_POINT 4 |
282 | ||
089354bb SM |
283 | /* Base class for target-specific inferior data. */ |
284 | ||
285 | struct private_inferior | |
286 | { | |
287 | virtual ~private_inferior () = 0; | |
288 | }; | |
b77209e0 | 289 | |
16c381f0 JK |
290 | /* Inferior process specific part of `struct infcall_control_state'. |
291 | ||
292 | Inferior thread counterpart is `struct thread_control_state'. */ | |
293 | ||
294 | struct inferior_control_state | |
295 | { | |
ee841dd8 TT |
296 | inferior_control_state () |
297 | : stop_soon (NO_STOP_QUIETLY) | |
298 | { | |
299 | } | |
300 | ||
301 | explicit inferior_control_state (enum stop_kind when) | |
302 | : stop_soon (when) | |
303 | { | |
304 | } | |
305 | ||
16c381f0 JK |
306 | /* See the definition of stop_kind above. */ |
307 | enum stop_kind stop_soon; | |
308 | }; | |
309 | ||
3a3fd0fd PA |
310 | /* Return a pointer to the current inferior. */ |
311 | extern inferior *current_inferior (); | |
312 | ||
313 | extern void set_current_inferior (inferior *); | |
314 | ||
db2d40f7 PA |
315 | /* Switch inferior (and program space) to INF, and switch to no thread |
316 | selected. */ | |
317 | extern void switch_to_inferior_no_thread (inferior *inf); | |
318 | ||
b77209e0 PA |
319 | /* GDB represents the state of each program execution with an object |
320 | called an inferior. An inferior typically corresponds to a process | |
321 | but is more general and applies also to targets that do not have a | |
322 | notion of processes. Each run of an executable creates a new | |
323 | inferior, as does each attachment to an existing process. | |
324 | Inferiors have unique internal identifiers that are different from | |
325 | target process ids. Each inferior may in turn have multiple | |
3a3fd0fd PA |
326 | threads running in it. |
327 | ||
328 | Inferiors are intrusively refcounted objects. Unlike thread | |
329 | objects, being the user-selected inferior is considered a strong | |
330 | reference and is thus accounted for in the inferior object's | |
331 | refcount (see set_current_inferior). When GDB needs to remember | |
332 | the selected inferior to later restore it, GDB temporarily bumps | |
333 | the inferior object's refcount, to prevent something deleting the | |
334 | inferior object before reverting back (e.g., due to a | |
335 | "remove-inferiors" command (see | |
09e3c4ca | 336 | scoped_restore_current_inferior). All other inferior |
3a3fd0fd PA |
337 | references are considered weak references. Inferiors are always |
338 | listed exactly once in the inferior list, so placing an inferior in | |
339 | the inferior list is an implicit, not counted strong reference. */ | |
340 | ||
341 | class inferior : public refcounted_object | |
b77209e0 | 342 | { |
0550c955 PA |
343 | public: |
344 | explicit inferior (int pid); | |
345 | ~inferior (); | |
346 | ||
3a3fd0fd PA |
347 | /* Returns true if we can delete this inferior. */ |
348 | bool deletable () const { return refcount () == 0; } | |
349 | ||
5b6d1e4f PA |
350 | /* Push T in this inferior's target stack. */ |
351 | void push_target (struct target_ops *t) | |
352 | { m_target_stack.push (t); } | |
353 | ||
354 | /* Unpush T from this inferior's target stack. */ | |
355 | int unpush_target (struct target_ops *t) | |
356 | { return m_target_stack.unpush (t); } | |
357 | ||
358 | /* Returns true if T is pushed in this inferior's target stack. */ | |
359 | bool target_is_pushed (target_ops *t) | |
360 | { return m_target_stack.is_pushed (t); } | |
361 | ||
362 | /* Find the target beneath T in this inferior's target stack. */ | |
363 | target_ops *find_target_beneath (const target_ops *t) | |
364 | { return m_target_stack.find_beneath (t); } | |
365 | ||
366 | /* Return the target at the top of this inferior's target stack. */ | |
367 | target_ops *top_target () | |
368 | { return m_target_stack.top (); } | |
369 | ||
370 | /* Return the target at process_stratum level in this inferior's | |
371 | target stack. */ | |
372 | struct process_stratum_target *process_target () | |
373 | { return (process_stratum_target *) m_target_stack.at (process_stratum); } | |
374 | ||
375 | /* Return the target at STRATUM in this inferior's target stack. */ | |
376 | target_ops *target_at (enum strata stratum) | |
377 | { return m_target_stack.at (stratum); } | |
378 | ||
5018ce90 | 379 | bool has_execution () |
55f6301a | 380 | { return target_has_execution (this); } |
5018ce90 | 381 | |
b77209e0 | 382 | /* Pointer to next inferior in singly-linked list of inferiors. */ |
0550c955 | 383 | struct inferior *next = NULL; |
b77209e0 | 384 | |
08036331 PA |
385 | /* This inferior's thread list. */ |
386 | thread_info *thread_list = nullptr; | |
387 | ||
388 | /* Returns a range adapter covering the inferior's threads, | |
389 | including exited threads. Used like this: | |
390 | ||
391 | for (thread_info *thr : inf->threads ()) | |
392 | { .... } | |
393 | */ | |
394 | inf_threads_range threads () | |
395 | { return inf_threads_range (this->thread_list); } | |
396 | ||
397 | /* Returns a range adapter covering the inferior's non-exited | |
398 | threads. Used like this: | |
399 | ||
400 | for (thread_info *thr : inf->non_exited_threads ()) | |
401 | { .... } | |
402 | */ | |
403 | inf_non_exited_threads_range non_exited_threads () | |
404 | { return inf_non_exited_threads_range (this->thread_list); } | |
405 | ||
406 | /* Like inferior::threads(), but returns a range adapter that can be | |
407 | used with range-for, safely. I.e., it is safe to delete the | |
408 | currently-iterated thread, like this: | |
409 | ||
410 | for (thread_info *t : inf->threads_safe ()) | |
411 | if (some_condition ()) | |
412 | delete f; | |
413 | */ | |
414 | inline safe_inf_threads_range threads_safe () | |
415 | { return safe_inf_threads_range (this->thread_list); } | |
416 | ||
05779d57 PA |
417 | /* Set/get file name for default use for standard in/out in the |
418 | inferior. On Unix systems, we try to make TERMINAL_NAME the | |
419 | inferior's controlling terminal. If TERMINAL_NAME is nullptr or | |
420 | the empty string, then the inferior inherits GDB's terminal (or | |
421 | GDBserver's if spawning a remote process). */ | |
422 | void set_tty (const char *terminal_name); | |
423 | const char *tty (); | |
424 | ||
b77209e0 PA |
425 | /* Convenient handle (GDB inferior id). Unique across all |
426 | inferiors. */ | |
0550c955 | 427 | int num = 0; |
b77209e0 PA |
428 | |
429 | /* Actual target inferior id, usually, a process id. This matches | |
430 | the ptid_t.pid member of threads of this inferior. */ | |
0550c955 | 431 | int pid = 0; |
e714e1bf | 432 | /* True if the PID was actually faked by GDB. */ |
0550c955 | 433 | bool fake_pid_p = false; |
b77209e0 | 434 | |
5d5658a1 | 435 | /* The highest thread number this inferior ever had. */ |
0550c955 | 436 | int highest_thread_num = 0; |
5d5658a1 | 437 | |
16c381f0 JK |
438 | /* State of GDB control of inferior process execution. |
439 | See `struct inferior_control_state'. */ | |
ee841dd8 | 440 | inferior_control_state control; |
16c381f0 | 441 | |
6c95b8df PA |
442 | /* True if this was an auto-created inferior, e.g. created from |
443 | following a fork; false, if this inferior was manually added by | |
444 | the user, and we should not attempt to prune it | |
445 | automatically. */ | |
0550c955 | 446 | bool removable = false; |
6c95b8df PA |
447 | |
448 | /* The address space bound to this inferior. */ | |
0550c955 | 449 | struct address_space *aspace = NULL; |
6c95b8df PA |
450 | |
451 | /* The program space bound to this inferior. */ | |
0550c955 | 452 | struct program_space *pspace = NULL; |
6c95b8df | 453 | |
3f81c18a | 454 | /* The arguments string to use when running. */ |
0550c955 | 455 | char *args = NULL; |
3f81c18a VP |
456 | |
457 | /* The size of elements in argv. */ | |
0550c955 | 458 | int argc = 0; |
3f81c18a VP |
459 | |
460 | /* The vector version of arguments. If ARGC is nonzero, | |
461 | then we must compute ARGS from this (via the target). | |
462 | This is always coming from main's argv and therefore | |
463 | should never be freed. */ | |
0550c955 | 464 | char **argv = NULL; |
3f81c18a | 465 | |
d092c5a2 SDJ |
466 | /* The current working directory that will be used when starting |
467 | this inferior. */ | |
468 | gdb::unique_xmalloc_ptr<char> cwd; | |
469 | ||
e671cd59 PA |
470 | /* The terminal state as set by the last target_terminal::terminal_* |
471 | call. */ | |
472 | target_terminal_state terminal_state = target_terminal_state::is_ours; | |
473 | ||
3f81c18a VP |
474 | /* Environment to use for running inferior, |
475 | in format described in environ.h. */ | |
9a6c7d9c | 476 | gdb_environ environment; |
3f81c18a | 477 | |
0550c955 PA |
478 | /* True if this child process was attached rather than forked. */ |
479 | bool attach_flag = false; | |
181e7f93 | 480 | |
6c95b8df PA |
481 | /* If this inferior is a vfork child, then this is the pointer to |
482 | its vfork parent, if GDB is still attached to it. */ | |
0550c955 | 483 | inferior *vfork_parent = NULL; |
6c95b8df PA |
484 | |
485 | /* If this process is a vfork parent, this is the pointer to the | |
486 | child. Since a vfork parent is left frozen by the kernel until | |
487 | the child execs or exits, a process can only have one vfork child | |
488 | at a given time. */ | |
0550c955 | 489 | inferior *vfork_child = NULL; |
6c95b8df PA |
490 | |
491 | /* True if this inferior should be detached when it's vfork sibling | |
492 | exits or execs. */ | |
0550c955 | 493 | bool pending_detach = false; |
6c95b8df PA |
494 | |
495 | /* True if this inferior is a vfork parent waiting for a vfork child | |
496 | not under our control to be done with the shared memory region, | |
497 | either by exiting or execing. */ | |
0550c955 | 498 | bool waiting_for_vfork_done = false; |
6c95b8df | 499 | |
24291992 | 500 | /* True if we're in the process of detaching from this inferior. */ |
9bcb1f16 | 501 | bool detaching = false; |
24291992 | 502 | |
e0ba6746 PA |
503 | /* What is left to do for an execution command after any thread of |
504 | this inferior stops. For continuations associated with a | |
505 | specific thread, see `struct thread_info'. */ | |
0550c955 | 506 | continuation *continuations = NULL; |
e0ba6746 | 507 | |
6efcd9a8 PA |
508 | /* True if setup_inferior wasn't called for this inferior yet. |
509 | Until that is done, we must not access inferior memory or | |
510 | registers, as we haven't determined the target | |
511 | architecture/description. */ | |
0550c955 | 512 | bool needs_setup = false; |
6efcd9a8 | 513 | |
b77209e0 | 514 | /* Private data used by the target vector implementation. */ |
089354bb | 515 | std::unique_ptr<private_inferior> priv; |
a96d9b2e | 516 | |
8cf64490 TT |
517 | /* HAS_EXIT_CODE is true if the inferior exited with an exit code. |
518 | In this case, the EXIT_CODE field is also valid. */ | |
0550c955 PA |
519 | bool has_exit_code = false; |
520 | LONGEST exit_code = 0; | |
8cf64490 | 521 | |
7dcd53a0 | 522 | /* Default flags to pass to the symbol reading functions. These are |
b15cc25c | 523 | used whenever a new objfile is created. */ |
0550c955 | 524 | symfile_add_flags symfile_flags = 0; |
7dcd53a0 | 525 | |
6ecd4729 PA |
526 | /* Info about an inferior's target description (if it's fetched; the |
527 | user supplied description's filename, if any; etc.). */ | |
0550c955 | 528 | target_desc_info *tdesc_info = NULL; |
6ecd4729 PA |
529 | |
530 | /* The architecture associated with the inferior through the | |
531 | connection to the target. | |
532 | ||
533 | The architecture vector provides some information that is really | |
534 | a property of the inferior, accessed through a particular target: | |
535 | ptrace operations; the layout of certain RSP packets; the | |
536 | solib_ops vector; etc. To differentiate architecture accesses to | |
537 | per-inferior/target properties from | |
538 | per-thread/per-frame/per-objfile properties, accesses to | |
539 | per-inferior/target properties should be made through | |
540 | this gdbarch. */ | |
0550c955 | 541 | struct gdbarch *gdbarch = NULL; |
6ecd4729 | 542 | |
d20172fc SM |
543 | /* Data related to displaced stepping. */ |
544 | displaced_step_inferior_state displaced_step_state; | |
545 | ||
6c95b8df | 546 | /* Per inferior data-pointers required by other GDB modules. */ |
8e260fc0 | 547 | REGISTRY_FIELDS; |
5b6d1e4f PA |
548 | |
549 | private: | |
550 | /* The inferior's target stack. */ | |
551 | target_stack m_target_stack; | |
05779d57 PA |
552 | |
553 | /* The name of terminal device to use for I/O. */ | |
554 | gdb::unique_xmalloc_ptr<char> m_terminal; | |
b77209e0 PA |
555 | }; |
556 | ||
6c95b8df PA |
557 | /* Keep a registry of per-inferior data-pointers required by other GDB |
558 | modules. */ | |
559 | ||
8e260fc0 | 560 | DECLARE_REGISTRY (inferior); |
6c95b8df | 561 | |
b77209e0 PA |
562 | /* Add an inferior to the inferior list, print a message that a new |
563 | inferior is found, and return the pointer to the new inferior. | |
564 | Caller may use this pointer to initialize the private inferior | |
565 | data. */ | |
566 | extern struct inferior *add_inferior (int pid); | |
567 | ||
568 | /* Same as add_inferior, but don't print new inferior notifications to | |
569 | the CLI. */ | |
570 | extern struct inferior *add_inferior_silent (int pid); | |
571 | ||
7a41607e | 572 | extern void delete_inferior (struct inferior *todel); |
b77209e0 PA |
573 | |
574 | /* Delete an existing inferior list entry, due to inferior detaching. */ | |
bc09b0c1 SM |
575 | extern void detach_inferior (inferior *inf); |
576 | ||
00431a78 | 577 | extern void exit_inferior (inferior *inf); |
b77209e0 | 578 | |
00431a78 | 579 | extern void exit_inferior_silent (inferior *inf); |
6c95b8df PA |
580 | |
581 | extern void exit_inferior_num_silent (int num); | |
582 | ||
583 | extern void inferior_appeared (struct inferior *inf, int pid); | |
584 | ||
5b6d1e4f PA |
585 | /* Search function to lookup an inferior of TARG by target 'pid'. */ |
586 | extern struct inferior *find_inferior_pid (process_stratum_target *targ, | |
587 | int pid); | |
82f73884 | 588 | |
5b6d1e4f PA |
589 | /* Search function to lookup an inferior of TARG whose pid is equal to |
590 | 'ptid.pid'. */ | |
591 | extern struct inferior *find_inferior_ptid (process_stratum_target *targ, | |
592 | ptid_t ptid); | |
c9657e70 | 593 | |
6c95b8df PA |
594 | /* Search function to lookup an inferior by GDB 'num'. */ |
595 | extern struct inferior *find_inferior_id (int num); | |
596 | ||
32990ada PA |
597 | /* Find an inferior bound to PSPACE, giving preference to the current |
598 | inferior. */ | |
6c95b8df PA |
599 | extern struct inferior * |
600 | find_inferior_for_program_space (struct program_space *pspace); | |
601 | ||
b77209e0 PA |
602 | /* Returns true if the inferior list is not empty. */ |
603 | extern int have_inferiors (void); | |
604 | ||
5b6d1e4f PA |
605 | /* Returns the number of live inferiors running on PROC_TARGET (real |
606 | live processes with execution). */ | |
607 | extern int number_of_live_inferiors (process_stratum_target *proc_target); | |
8020350c | 608 | |
c35b1492 PA |
609 | /* Returns true if there are any live inferiors in the inferior list |
610 | (not cores, not executables, real live processes). */ | |
611 | extern int have_live_inferiors (void); | |
612 | ||
5ed8105e PA |
613 | /* Save/restore the current inferior. */ |
614 | ||
615 | class scoped_restore_current_inferior | |
616 | { | |
617 | public: | |
618 | scoped_restore_current_inferior () | |
619 | : m_saved_inf (current_inferior ()) | |
620 | {} | |
621 | ||
622 | ~scoped_restore_current_inferior () | |
623 | { set_current_inferior (m_saved_inf); } | |
624 | ||
d6541620 | 625 | DISABLE_COPY_AND_ASSIGN (scoped_restore_current_inferior); |
5ed8105e PA |
626 | |
627 | private: | |
628 | inferior *m_saved_inf; | |
629 | }; | |
630 | ||
6c95b8df | 631 | |
c65b3e0d PA |
632 | /* Traverse all inferiors. */ |
633 | ||
08036331 | 634 | extern struct inferior *inferior_list; |
c65b3e0d | 635 | |
08036331 PA |
636 | /* Pull in the internals of the inferiors ranges and iterators. Must |
637 | be done after struct inferior is defined. */ | |
638 | #include "inferior-iter.h" | |
85ad3aaf | 639 | |
08036331 PA |
640 | /* Return a range that can be used to walk over all inferiors |
641 | inferiors, with range-for, safely. I.e., it is safe to delete the | |
642 | currently-iterated inferior. When combined with range-for, this | |
643 | allow convenient patterns like this: | |
85ad3aaf | 644 | |
08036331 PA |
645 | for (inferior *inf : all_inferiors_safe ()) |
646 | if (some_condition ()) | |
647 | delete inf; | |
648 | */ | |
649 | ||
650 | inline all_inferiors_safe_range | |
651 | all_inferiors_safe () | |
652 | { | |
653 | return {}; | |
654 | } | |
655 | ||
656 | /* Returns a range representing all inferiors, suitable to use with | |
657 | range-for, like this: | |
658 | ||
659 | for (inferior *inf : all_inferiors ()) | |
660 | [...] | |
661 | */ | |
662 | ||
663 | inline all_inferiors_range | |
5b6d1e4f | 664 | all_inferiors (process_stratum_target *proc_target = nullptr) |
08036331 | 665 | { |
5b6d1e4f | 666 | return all_inferiors_range (proc_target); |
08036331 PA |
667 | } |
668 | ||
669 | /* Return a range that can be used to walk over all inferiors with PID | |
670 | not zero, with range-for. */ | |
671 | ||
672 | inline all_non_exited_inferiors_range | |
5b6d1e4f | 673 | all_non_exited_inferiors (process_stratum_target *proc_target = nullptr) |
08036331 | 674 | { |
5b6d1e4f | 675 | return all_non_exited_inferiors_range (proc_target); |
08036331 | 676 | } |
6c95b8df PA |
677 | |
678 | /* Prune away automatically added inferiors that aren't required | |
679 | anymore. */ | |
680 | extern void prune_inferiors (void); | |
681 | ||
682 | extern int number_of_inferiors (void); | |
683 | ||
a79b8f6e VP |
684 | extern struct inferior *add_inferior_with_spaces (void); |
685 | ||
4034d0ff AT |
686 | /* Print the current selected inferior. */ |
687 | extern void print_selected_inferior (struct ui_out *uiout); | |
688 | ||
c906108c | 689 | #endif /* !defined (INFERIOR_H) */ |