1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
|
/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
Copyright (C) 1986-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (INFERIOR_H)
#define INFERIOR_H 1
#include <exception>
#include <list>
struct target_waitstatus;
class frame_info_ptr;
struct ui_file;
struct type;
struct gdbarch;
struct regcache;
struct ui_out;
struct terminal_info;
struct target_desc_info;
struct inferior;
struct thread_info;
/* For bpstat. */
#include "breakpoint.h"
/* For enum gdb_signal. */
#include "target.h"
/* For struct frame_id. */
#include "frame.h"
/* For gdb_environ. */
#include "gdbsupport/environ.h"
#include "progspace.h"
#include "registry.h"
#include "symfile-add-flags.h"
#include "gdbsupport/refcounted-object.h"
#include "gdbsupport/forward-scope-exit.h"
#include "gdbsupport/gdb_unique_ptr.h"
#include "gdbsupport/intrusive_list.h"
#include "gdbsupport/common-inferior.h"
#include "gdbthread.h"
#include "process-stratum-target.h"
#include "displaced-stepping.h"
#include <unordered_map>
struct infcall_suspend_state;
struct infcall_control_state;
extern void restore_infcall_suspend_state (struct infcall_suspend_state *);
extern void restore_infcall_control_state (struct infcall_control_state *);
/* A deleter for infcall_suspend_state that calls
restore_infcall_suspend_state. */
struct infcall_suspend_state_deleter
{
void operator() (struct infcall_suspend_state *state) const
{
try
{
restore_infcall_suspend_state (state);
}
catch (const gdb_exception_error &e)
{
/* If we are restoring the inferior state due to an exception,
some error message will be printed. So, only warn the user
when we cannot restore during normal execution. */
bool unwinding;
#if __cpp_lib_uncaught_exceptions
unwinding = std::uncaught_exceptions () > 0;
#else
unwinding = std::uncaught_exception ();
#endif
if (!unwinding)
warning (_("Failed to restore inferior state: %s"), e.what ());
}
}
};
/* A unique_ptr specialization for infcall_suspend_state. */
typedef std::unique_ptr<infcall_suspend_state, infcall_suspend_state_deleter>
infcall_suspend_state_up;
extern infcall_suspend_state_up save_infcall_suspend_state ();
/* A deleter for infcall_control_state that calls
restore_infcall_control_state. */
struct infcall_control_state_deleter
{
void operator() (struct infcall_control_state *state) const
{
restore_infcall_control_state (state);
}
};
/* A unique_ptr specialization for infcall_control_state. */
typedef std::unique_ptr<infcall_control_state, infcall_control_state_deleter>
infcall_control_state_up;
extern infcall_control_state_up save_infcall_control_state ();
extern void discard_infcall_suspend_state (struct infcall_suspend_state *);
extern void discard_infcall_control_state (struct infcall_control_state *);
extern readonly_detached_regcache *
get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
extern void set_sigint_trap (void);
extern void clear_sigint_trap (void);
/* Collected pid, tid, etc. of the debugged inferior. When there's
no inferior, inferior_ptid.pid () will be 0. */
extern ptid_t inferior_ptid;
extern void generic_mourn_inferior (void);
extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
struct type *type,
const gdb_byte *buf);
extern void unsigned_address_to_pointer (struct gdbarch *gdbarch,
struct type *type, gdb_byte *buf,
CORE_ADDR addr);
extern CORE_ADDR signed_pointer_to_address (struct gdbarch *gdbarch,
struct type *type,
const gdb_byte *buf);
extern void address_to_signed_pointer (struct gdbarch *gdbarch,
struct type *type, gdb_byte *buf,
CORE_ADDR addr);
extern void reopen_exec_file (void);
/* From misc files */
extern void default_print_registers_info (struct gdbarch *gdbarch,
struct ui_file *file,
frame_info_ptr frame,
int regnum, int all);
/* Default implementation of gdbarch_print_float_info. Print
the values of all floating point registers. */
extern void default_print_float_info (struct gdbarch *gdbarch,
struct ui_file *file,
frame_info_ptr frame,
const char *args);
/* Try to determine whether TTY is GDB's input terminal. Returns
TRIBOOL_UNKNOWN if we can't tell. */
extern tribool is_gdb_terminal (const char *tty);
/* Helper for sharing_input_terminal. Try to determine whether pid
PID is using the same TTY for input as GDB is. Returns
TRIBOOL_UNKNOWN if we can't tell. */
extern tribool sharing_input_terminal (int pid);
/* The type of the function that is called when SIGINT is handled. */
typedef void c_c_handler_ftype (int);
/* Install a new SIGINT handler in a host-dependent way. The previous
handler is returned. It is fine to pass SIG_IGN for FN, but not
SIG_DFL. */
extern c_c_handler_ftype *install_sigint_handler (c_c_handler_ftype *fn);
extern void child_terminal_info (struct target_ops *self, const char *, int);
extern void child_terminal_ours (struct target_ops *self);
extern void child_terminal_ours_for_output (struct target_ops *self);
extern void child_terminal_inferior (struct target_ops *self);
extern void child_terminal_save_inferior (struct target_ops *self);
extern void child_terminal_init (struct target_ops *self);
extern void child_pass_ctrlc (struct target_ops *self);
extern void child_interrupt (struct target_ops *self);
/* From fork-child.c */
/* Helper function to call STARTUP_INFERIOR with PID and NUM_TRAPS.
This function already calls set_executing. Return the ptid_t from
STARTUP_INFERIOR. */
extern ptid_t gdb_startup_inferior (pid_t pid, int num_traps);
/* From infcmd.c */
/* Initial inferior setup. Determines the exec file is not yet known,
takes any necessary post-attaching actions, fetches the target
description and syncs the shared library list. */
extern void setup_inferior (int from_tty);
extern void post_create_inferior (int from_tty);
extern void attach_command (const char *, int);
extern void registers_info (const char *, int);
extern void continue_1 (int all_threads);
extern void interrupt_target_1 (bool all_threads);
using delete_longjmp_breakpoint_cleanup
= FORWARD_SCOPE_EXIT (delete_longjmp_breakpoint);
extern void detach_command (const char *, int);
extern void notice_new_inferior (struct thread_info *, bool, int);
/* Return the value of the result of a function at the end of a 'finish'
command/BP. If the result's value cannot be retrieved, return NULL.
FUNC_SYMBOL is the symbol of the function being returned from. FUNCTION is
a value containing the address of the function. */
extern struct value *get_return_value (struct symbol *func_symbol,
struct value *function);
/* Prepare for execution command. TARGET is the target that will run
the command. BACKGROUND determines whether this is a foreground
(synchronous) or background (asynchronous) command. */
extern void prepare_execution_command (struct target_ops *target,
int background);
/* Nonzero if stopped due to completion of a stack dummy routine. */
extern enum stop_stack_kind stop_stack_dummy;
/* Nonzero if program stopped due to a random (unexpected) signal in
inferior process. */
extern int stopped_by_random_signal;
/* Print notices on inferior events (attach, detach, etc.), set with
`set print inferior-events'. */
extern bool print_inferior_events;
/* Anything but NO_STOP_QUIETLY means we expect a trap and the caller
will handle it themselves. STOP_QUIETLY is used when running in
the shell before the child program has been exec'd and when running
through shared library loading. STOP_QUIETLY_REMOTE is used when
setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
except that there is no need to hide a signal. */
/* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach.
When doing an attach, the kernel stops the debuggee with a SIGSTOP.
On newer GNU/Linux kernels (>= 2.5.61) the handling of SIGSTOP for
a ptraced process has changed. Earlier versions of the kernel
would ignore these SIGSTOPs, while now SIGSTOP is treated like any
other signal, i.e. it is not muffled.
If the gdb user does a 'continue' after the 'attach', gdb passes
the global variable stop_signal (which stores the signal from the
attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is
problematic, because the kernel doesn't ignore such SIGSTOP
now. I.e. it is reported back to gdb, which in turn presents it
back to the user.
To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
gdb to clear the value of stop_signal after the attach, so that it
is not passed back down to the kernel. */
enum stop_kind
{
NO_STOP_QUIETLY = 0,
STOP_QUIETLY,
STOP_QUIETLY_REMOTE,
STOP_QUIETLY_NO_SIGSTOP
};
/* Base class for target-specific inferior data. */
struct private_inferior
{
virtual ~private_inferior () = 0;
};
/* Inferior process specific part of `struct infcall_control_state'.
Inferior thread counterpart is `struct thread_control_state'. */
struct inferior_control_state
{
inferior_control_state ()
: stop_soon (NO_STOP_QUIETLY)
{
}
explicit inferior_control_state (enum stop_kind when)
: stop_soon (when)
{
}
/* See the definition of stop_kind above. */
enum stop_kind stop_soon;
};
/* Return a pointer to the current inferior. */
extern inferior *current_inferior ();
extern void set_current_inferior (inferior *);
/* Switch inferior (and program space) to INF, and switch to no thread
selected. */
extern void switch_to_inferior_no_thread (inferior *inf);
/* Ensure INF is the current inferior.
If the current inferior was changed, return an RAII object that will
restore the original current context. */
extern gdb::optional<scoped_restore_current_thread> maybe_switch_inferior
(inferior *inf);
/* Info about an inferior's target description. There's one of these
for each inferior. */
struct target_desc_info
{
/* Returns true if this target description information has been supplied by
the user. */
bool from_user_p ()
{ return !this->filename.empty (); }
/* A flag indicating that a description has already been fetched
from the target, so it should not be queried again. */
bool fetched = false;
/* The description fetched from the target, or NULL if the target
did not supply any description. Only valid when
FETCHED is set. Only the description initialization
code should access this; normally, the description should be
accessed through the gdbarch object. */
const struct target_desc *tdesc = nullptr;
/* If not empty, the filename to read a target description from, as set by
"set tdesc filename ...".
If empty, there is not filename specified by the user. */
std::string filename;
};
/* GDB represents the state of each program execution with an object
called an inferior. An inferior typically corresponds to a process
but is more general and applies also to targets that do not have a
notion of processes. Each run of an executable creates a new
inferior, as does each attachment to an existing process.
Inferiors have unique internal identifiers that are different from
target process ids. Each inferior may in turn have multiple
threads running in it.
Inferiors are intrusively refcounted objects. Unlike thread
objects, being the user-selected inferior is considered a strong
reference and is thus accounted for in the inferior object's
refcount (see set_current_inferior). When GDB needs to remember
the selected inferior to later restore it, GDB temporarily bumps
the inferior object's refcount, to prevent something deleting the
inferior object before reverting back (e.g., due to a
"remove-inferiors" command (see
scoped_restore_current_inferior). All other inferior
references are considered weak references. Inferiors are always
listed exactly once in the inferior list, so placing an inferior in
the inferior list is an implicit, not counted strong reference. */
class inferior : public refcounted_object,
public intrusive_list_node<inferior>
{
public:
explicit inferior (int pid);
~inferior ();
/* Returns true if we can delete this inferior. */
bool deletable () const { return refcount () == 0; }
/* Push T in this inferior's target stack. */
void push_target (struct target_ops *t)
{ m_target_stack.push (t); }
/* An overload that deletes the target on failure. */
void push_target (target_ops_up &&t)
{
m_target_stack.push (t.get ());
t.release ();
}
/* Unpush T from this inferior's target stack. */
int unpush_target (struct target_ops *t);
/* Returns true if T is pushed in this inferior's target stack. */
bool target_is_pushed (const target_ops *t) const
{ return m_target_stack.is_pushed (t); }
/* Find the target beneath T in this inferior's target stack. */
target_ops *find_target_beneath (const target_ops *t)
{ return m_target_stack.find_beneath (t); }
/* Return the target at the top of this inferior's target stack. */
target_ops *top_target ()
{ return m_target_stack.top (); }
/* Unpush all targets except the dummy target from m_target_stack. As
targets are removed from m_target_stack their reference count is
decremented, which may cause a target to close. */
void pop_all_targets ()
{ pop_all_targets_above (dummy_stratum); }
/* Unpush all targets above STRATUM from m_target_stack. As targets are
removed from m_target_stack their reference count is decremented,
which may cause a target to close. */
void pop_all_targets_above (enum strata stratum);
/* Unpush all targets at and above STRATUM from m_target_stack. As
targets are removed from m_target_stack their reference count is
decremented, which may cause a target to close. */
void pop_all_targets_at_and_above (enum strata stratum);
/* Return the target at process_stratum level in this inferior's
target stack. */
struct process_stratum_target *process_target ()
{ return (process_stratum_target *) m_target_stack.at (process_stratum); }
/* Return the target at STRATUM in this inferior's target stack. */
target_ops *target_at (enum strata stratum)
{ return m_target_stack.at (stratum); }
bool has_execution ()
{ return target_has_execution (this); }
/* This inferior's thread list, sorted by creation order. */
intrusive_list<thread_info> thread_list;
/* A map of ptid_t to thread_info*, for average O(1) ptid_t lookup.
Exited threads do not appear in the map. */
std::unordered_map<ptid_t, thread_info *, hash_ptid> ptid_thread_map;
/* Returns a range adapter covering the inferior's threads,
including exited threads. Used like this:
for (thread_info *thr : inf->threads ())
{ .... }
*/
inf_threads_range threads ()
{ return inf_threads_range (this->thread_list.begin ()); }
/* Returns a range adapter covering the inferior's non-exited
threads. Used like this:
for (thread_info *thr : inf->non_exited_threads ())
{ .... }
*/
inf_non_exited_threads_range non_exited_threads ()
{ return inf_non_exited_threads_range (this->thread_list.begin ()); }
/* Like inferior::threads(), but returns a range adapter that can be
used with range-for, safely. I.e., it is safe to delete the
currently-iterated thread, like this:
for (thread_info *t : inf->threads_safe ())
if (some_condition ())
delete f;
*/
inline safe_inf_threads_range threads_safe ()
{ return safe_inf_threads_range (this->thread_list.begin ()); }
/* Find (non-exited) thread PTID of this inferior. */
thread_info *find_thread (ptid_t ptid);
/* Delete all threads in the thread list. If SILENT, exit threads
silently. */
void clear_thread_list (bool silent);
/* Continuations-related methods. A continuation is an std::function
to be called to finish the execution of a command when running
GDB asynchronously. A continuation is executed after any thread
of this inferior stops. Continuations are used by the attach
command and the remote target when a new inferior is detected. */
void add_continuation (std::function<void ()> &&cont);
void do_all_continuations ();
/* Set/get file name for default use for standard in/out in the inferior.
On Unix systems, we try to make TERMINAL_NAME the inferior's controlling
terminal.
If TERMINAL_NAME is the empty string, then the inferior inherits GDB's
terminal (or GDBserver's if spawning a remote process). */
void set_tty (std::string terminal_name);
const std::string &tty ();
/* Set the argument string to use when running this inferior.
An empty string can be used to represent "no arguments". */
void set_args (std::string args)
{
m_args = std::move (args);
};
/* Set the argument string from some strings. */
void set_args (gdb::array_view<char * const> args);
/* Get the argument string to use when running this inferior.
No arguments is represented by an empty string. */
const std::string &args () const
{
return m_args;
}
/* Set the inferior current working directory.
If CWD is empty, unset the directory. */
void set_cwd (std::string cwd)
{
m_cwd = std::move (cwd);
}
/* Get the inferior current working directory.
Return an empty string if the current working directory is not
specified. */
const std::string &cwd () const
{
return m_cwd;
}
/* Convenient handle (GDB inferior id). Unique across all
inferiors. */
int num = 0;
/* Actual target inferior id, usually, a process id. This matches
the ptid_t.pid member of threads of this inferior. */
int pid = 0;
/* True if the PID was actually faked by GDB. */
bool fake_pid_p = false;
/* The highest thread number this inferior ever had. */
int highest_thread_num = 0;
/* State of GDB control of inferior process execution.
See `struct inferior_control_state'. */
inferior_control_state control;
/* True if this was an auto-created inferior, e.g. created from
following a fork; false, if this inferior was manually added by
the user, and we should not attempt to prune it
automatically. */
bool removable = false;
/* The address space bound to this inferior. */
struct address_space *aspace = NULL;
/* The program space bound to this inferior. */
struct program_space *pspace = NULL;
/* The terminal state as set by the last target_terminal::terminal_*
call. */
target_terminal_state terminal_state = target_terminal_state::is_ours;
/* Environment to use for running inferior,
in format described in environ.h. */
gdb_environ environment;
/* True if this child process was attached rather than forked. */
bool attach_flag = false;
/* If this inferior is a vfork child, then this is the pointer to
its vfork parent, if GDB is still attached to it. */
inferior *vfork_parent = NULL;
/* If this process is a vfork parent, this is the pointer to the
child. Since a vfork parent is left frozen by the kernel until
the child execs or exits, a process can only have one vfork child
at a given time. */
inferior *vfork_child = NULL;
/* True if this inferior should be detached when it's vfork sibling
exits or execs. */
bool pending_detach = false;
/* If non-nullptr, points to a thread that called vfork and is now waiting
for a vfork child not under our control to be done with the shared memory
region, either by exiting or execing. */
thread_info *thread_waiting_for_vfork_done = nullptr;
/* True if we're in the process of detaching from this inferior. */
bool detaching = false;
/* True if setup_inferior wasn't called for this inferior yet.
Until that is done, we must not access inferior memory or
registers, as we haven't determined the target
architecture/description. */
bool needs_setup = false;
/* True if the inferior is starting up (inside startup_inferior),
and we're nursing it along (through the shell) until it is ready
to execute its first instruction. Until that is done, we must
not access inferior memory or registers, as we haven't determined
the target architecture/description. */
bool starting_up = false;
/* True when we are reading the library list of the inferior during an
attach or handling a fork child. */
bool in_initial_library_scan = false;
/* Private data used by the target vector implementation. */
std::unique_ptr<private_inferior> priv;
/* HAS_EXIT_CODE is true if the inferior exited with an exit code.
In this case, the EXIT_CODE field is also valid. */
bool has_exit_code = false;
LONGEST exit_code = 0;
/* Default flags to pass to the symbol reading functions. These are
used whenever a new objfile is created. */
symfile_add_flags symfile_flags = 0;
/* Info about an inferior's target description (if it's fetched; the
user supplied description's filename, if any; etc.). */
target_desc_info tdesc_info;
/* The architecture associated with the inferior through the
connection to the target.
The architecture vector provides some information that is really
a property of the inferior, accessed through a particular target:
ptrace operations; the layout of certain RSP packets; the
solib_ops vector; etc. To differentiate architecture accesses to
per-inferior/target properties from
per-thread/per-frame/per-objfile properties, accesses to
per-inferior/target properties should be made through
this gdbarch. */
struct gdbarch *gdbarch = NULL;
/* Data related to displaced stepping. */
displaced_step_inferior_state displaced_step_state;
/* Per inferior data-pointers required by other GDB modules. */
registry<inferior> registry_fields;
private:
/* Unpush TARGET and assert that it worked. */
void unpush_target_and_assert (struct target_ops *target);
/* The inferior's target stack. */
target_stack m_target_stack;
/* The name of terminal device to use for I/O. */
std::string m_terminal;
/* The list of continuations. */
std::list<std::function<void ()>> m_continuations;
/* The arguments string to use when running. */
std::string m_args;
/* The current working directory that will be used when starting
this inferior. */
std::string m_cwd;
};
/* Add an inferior to the inferior list, print a message that a new
inferior is found, and return the pointer to the new inferior.
Caller may use this pointer to initialize the private inferior
data. */
extern struct inferior *add_inferior (int pid);
/* Same as add_inferior, but don't print new inferior notifications to
the CLI. */
extern struct inferior *add_inferior_silent (int pid);
extern void delete_inferior (struct inferior *todel);
/* Delete an existing inferior list entry, due to inferior detaching. */
extern void detach_inferior (inferior *inf);
extern void exit_inferior (inferior *inf);
extern void exit_inferior_silent (inferior *inf);
extern void exit_inferior_num_silent (int num);
extern void inferior_appeared (struct inferior *inf, int pid);
/* Search function to lookup an inferior of TARG by target 'pid'. */
extern struct inferior *find_inferior_pid (process_stratum_target *targ,
int pid);
/* Search function to lookup an inferior of TARG whose pid is equal to
'ptid.pid'. */
extern struct inferior *find_inferior_ptid (process_stratum_target *targ,
ptid_t ptid);
/* Search function to lookup an inferior by GDB 'num'. */
extern struct inferior *find_inferior_id (int num);
/* Find an inferior bound to PSPACE, giving preference to the current
inferior. */
extern struct inferior *
find_inferior_for_program_space (struct program_space *pspace);
/* Returns true if the inferior list is not empty. */
extern int have_inferiors (void);
/* Returns the number of live inferiors running on PROC_TARGET (real
live processes with execution). */
extern int number_of_live_inferiors (process_stratum_target *proc_target);
/* Returns true if there are any live inferiors in the inferior list
(not cores, not executables, real live processes). */
extern int have_live_inferiors (void);
/* Save/restore the current inferior. */
class scoped_restore_current_inferior
{
public:
scoped_restore_current_inferior ()
: m_saved_inf (current_inferior ())
{}
~scoped_restore_current_inferior ()
{ set_current_inferior (m_saved_inf); }
DISABLE_COPY_AND_ASSIGN (scoped_restore_current_inferior);
private:
inferior *m_saved_inf;
};
/* When reading memory from an inferior, the global inferior_ptid must
also be set. This class arranges to save and restore the necessary
state for reading or writing memory, but without invalidating the
frame cache. */
class scoped_restore_current_inferior_for_memory
{
public:
/* Save the current globals and switch to the given inferior and the
inferior's program space. inferior_ptid is set to point to the
inferior's process id (and not to any particular thread). */
explicit scoped_restore_current_inferior_for_memory (inferior *inf)
: m_save_ptid (&inferior_ptid)
{
set_current_inferior (inf);
set_current_program_space (inf->pspace);
inferior_ptid = ptid_t (inf->pid);
}
DISABLE_COPY_AND_ASSIGN (scoped_restore_current_inferior_for_memory);
private:
scoped_restore_current_inferior m_save_inferior;
scoped_restore_current_program_space m_save_progspace;
scoped_restore_tmpl<ptid_t> m_save_ptid;
};
/* Traverse all inferiors. */
extern intrusive_list<inferior> inferior_list;
/* Pull in the internals of the inferiors ranges and iterators. Must
be done after struct inferior is defined. */
#include "inferior-iter.h"
/* Return a range that can be used to walk over all inferiors
inferiors, with range-for, safely. I.e., it is safe to delete the
currently-iterated inferior. When combined with range-for, this
allow convenient patterns like this:
for (inferior *inf : all_inferiors_safe ())
if (some_condition ())
delete inf;
*/
inline all_inferiors_safe_range
all_inferiors_safe ()
{
return all_inferiors_safe_range (nullptr, inferior_list);
}
/* Returns a range representing all inferiors, suitable to use with
range-for, like this:
for (inferior *inf : all_inferiors ())
[...]
*/
inline all_inferiors_range
all_inferiors (process_stratum_target *proc_target = nullptr)
{
return all_inferiors_range (proc_target, inferior_list);
}
/* Return a range that can be used to walk over all inferiors with PID
not zero, with range-for. */
inline all_non_exited_inferiors_range
all_non_exited_inferiors (process_stratum_target *proc_target = nullptr)
{
return all_non_exited_inferiors_range (proc_target, inferior_list);
}
/* Prune away automatically added inferiors that aren't required
anymore. */
extern void prune_inferiors (void);
extern int number_of_inferiors (void);
extern struct inferior *add_inferior_with_spaces (void);
/* Print the current selected inferior. */
extern void print_selected_inferior (struct ui_out *uiout);
/* Switch to inferior NEW_INF, a new inferior, and unless
NO_CONNECTION is true, push the process_stratum_target of ORG_INF
to NEW_INF. */
extern void switch_to_inferior_and_push_target
(inferior *new_inf, bool no_connection, inferior *org_inf);
#endif /* !defined (INFERIOR_H) */
|