GDB (xrefs)

/tmp/gdb-8.1/gdb/inf-loop.c
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1 /* Handling of inferior events for the event loop for GDB, the GNU debugger.
2 Copyright (C) 1999-2018 Free Software Foundation, Inc.
3 Written by Elena Zannoni <ezannoni@cygnus.com> of Cygnus Solutions.
4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19
20 #include "defs.h"
21 #include "inferior.h"
22 #include "infrun.h"
23 #include "event-loop.h"
24 #include "event-top.h"
25 #include "inf-loop.h"
26 #include "remote.h"
27 #include "language.h"
28 #include "gdbthread.h"
29 #include "continuations.h"
30 #include "interps.h"
31 #include "top.h"
32 #include "observer.h"
33
34 /* General function to handle events in the inferior. */
35
36 void
37 inferior_event_handler (enum inferior_event_type event_type,
38 gdb_client_data client_data)
39 {
40 switch (event_type)
41 {
42 case INF_REG_EVENT:
43 fetch_inferior_event (client_data);
44 break;
45
46 case INF_EXEC_COMPLETE:
47 if (!non_stop)
48 {
49 /* Unregister the inferior from the event loop. This is done
50 so that when the inferior is not running we don't get
51 distracted by spurious inferior output. */
52 if (target_has_execution && target_can_async_p ())
53 target_async (0);
54 }
55
56 /* Do all continuations associated with the whole inferior (not
57 a particular thread). */
58 if (!ptid_equal (inferior_ptid, null_ptid))
59 do_all_inferior_continuations (0);
60
61 /* When running a command list (from a user command, say), these
62 are only run when the command list is all done. */
63 if (current_ui->async)
64 {
65 check_frame_language_change ();
66
67 /* Don't propagate breakpoint commands errors. Either we're
68 stopping or some command resumes the inferior. The user will
69 be informed. */
70 TRY
71 {
72 bpstat_do_actions ();
73 }
74 CATCH (e, RETURN_MASK_ALL)
75 {
76 /* If the user was running a foreground execution
77 command, then propagate the error so that the prompt
78 can be reenabled. Otherwise, the user already has
79 the prompt and is typing some unrelated command, so
80 just inform the user and swallow the exception. */
81 if (current_ui->prompt_state == PROMPT_BLOCKED)
82 throw_exception (e);
83 else
84 exception_print (gdb_stderr, e);
85 }
86 END_CATCH
87 }
88 break;
89
90 default:
91 printf_unfiltered (_("Event type not recognized.\n"));
92 break;
93 }
94 }
top.h
target_can_async_p
#define target_can_async_p()
Definition: target.h:1778
current_ui
struct ui * current_ui
Definition: event-top.c:453
RETURN_MASK_ALL
Definition: common-exceptions.h:44
ui::async
int async
Definition: top.h:102
INF_EXEC_COMPLETE
Definition: target.h:126
target_async
void target_async(int enable)
Definition: target.c:3860
INF_REG_EVENT
Definition: target.h:124
_
#define _(String)
Definition: gdb_locale.h:35
defs.h
END_CATCH
#define END_CATCH
Definition: common-exceptions.h:259
observer.h
event-loop.h
TRY
#define TRY
Definition: common-exceptions.h:246
CATCH
#define CATCH(EXCEPTION, MASK)
Definition: common-exceptions.h:254
inferior_event_handler
void inferior_event_handler(enum inferior_event_type event_type, gdb_client_data client_data)
Definition: inf-loop.c:37
ui::prompt_state
enum prompt_state prompt_state
Definition: top.h:131
exception_print
void exception_print(struct ui_file *file, struct gdb_exception e)
Definition: exceptions.c:109
inf-loop.h
gdbthread.h
inferior.h
infrun.h
language.h
target_has_execution
#define target_has_execution
Definition: target.h:1756
printf_unfiltered
void printf_unfiltered(const char *format,...)
Definition: utils.c:2056
interps.h
gdb_client_data
void * gdb_client_data
Definition: event-loop.h:70
fetch_inferior_event
void fetch_inferior_event(void *client_data)
Definition: infrun.c:3861
event-top.h
inferior_event_type
inferior_event_type
Definition: target.h:120
throw_exception
void throw_exception(struct gdb_exception exception)
Definition: common-exceptions.c:312
non_stop
int non_stop
Definition: infrun.c:204
null_ptid
ptid_t null_ptid
Definition: ptid.c:25
PROMPT_BLOCKED
Definition: top.h:37
check_frame_language_change
void check_frame_language_change(void)
Definition: top.c:456
gdb_stderr
#define gdb_stderr
Definition: utils.h:344
inferior_ptid
ptid_t inferior_ptid
Definition: infcmd.c:94
remote.h
do_all_inferior_continuations
void do_all_inferior_continuations(int err)
Definition: continuations.c:122
ptid_equal
int ptid_equal(const ptid_t &ptid1, const ptid_t &ptid2)
Definition: ptid.c:71
bpstat_do_actions
void bpstat_do_actions(void)
Definition: breakpoint.c:4494
continuations.h