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/tmp/gdb-13.1/gdb/exceptions.c
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1/* Exception (throw catch) mechanism, for GDB, the GNU debugger.
2
3 Copyright (C) 1986-2023 Free Software Foundation, Inc.
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 "exceptions.h"
22#include "breakpoint.h"
23#include "target.h"
24#include "inferior.h"
25#include "annotate.h"
26#include "ui-out.h"
27#include "serial.h"
28#include "gdbthread.h"
29#include "top.h"
30#include "gdbsupport/gdb_optional.h"
31
32static void
34{
35 struct ui *ui = current_ui;
36 struct serial *gdb_stdout_serial;
37
40
41 gdb::optional<target_terminal::scoped_restore_terminal_state> term_state;
43 {
44 term_state.emplace ();
46 }
47
48 /* We want all output to appear now, before we print the error. We
49 have 2 levels of buffering we have to flush (it's possible that
50 some of these should be changed to flush the lower-level ones
51 too): */
52
53 /* 1. The stdio buffer. */
56
57 /* 2. The system-level buffer. */
58 gdb_stdout_serial = serial_fdopen (fileno (ui->outstream));
59 if (gdb_stdout_serial)
60 {
61 serial_drain_output (gdb_stdout_serial);
62 serial_un_fdopen (gdb_stdout_serial);
63 }
64
66}
67
68static void
69print_exception (struct ui_file *file, const struct gdb_exception &e)
70{
71 /* KLUDGE: cagney/2005-01-13: Write the string out one line at a time
72 as that way the MI's behavior is preserved. */
73 const char *start;
74 const char *end;
75
76 for (start = e.what (); start != NULL; start = end)
77 {
78 end = strchr (start, '\n');
79 if (end == NULL)
80 gdb_puts (start, file);
81 else
82 {
83 end++;
84 file->write (start, end - start);
85 }
86 }
87 gdb_printf (file, "\n");
88
89 /* Now append the annotation. */
90 switch (e.reason)
91 {
92 case RETURN_QUIT:
94 break;
95 case RETURN_ERROR:
96 /* Assume that these are all errors. */
98 break;
99 default:
100 internal_error (_("Bad switch."));
101 }
102}
103
104void
105exception_print (struct ui_file *file, const struct gdb_exception &e)
106{
107 if (e.reason < 0 && e.message != NULL)
108 {
109 print_flush ();
110 print_exception (file, e);
111 }
112}
113
114void
115exception_fprintf (struct ui_file *file, const struct gdb_exception &e,
116 const char *prefix, ...)
117{
118 if (e.reason < 0 && e.message != NULL)
119 {
120 va_list args;
121
122 print_flush ();
123
124 /* Print the prefix. */
125 va_start (args, prefix);
126 gdb_vprintf (file, prefix, args);
127 va_end (args);
128
129 print_exception (file, e);
130 }
131}
void annotate_error_begin(void)
Definition: annotate.c:293
void annotate_quit(void)
Definition: annotate.c:279
void annotate_error(void)
Definition: annotate.c:286
static void ours_for_output()
Definition: target.c:1083
struct ui * current_ui
Definition: event-top.c:483
void exception_fprintf(struct ui_file *file, const struct gdb_exception &e, const char *prefix,...)
Definition: exceptions.c:115
void exception_print(struct ui_file *file, const struct gdb_exception &e)
Definition: exceptions.c:105
static void print_flush(void)
Definition: exceptions.c:33
static void print_exception(struct ui_file *file, const struct gdb_exception &e)
Definition: exceptions.c:69
#define prefix(a, b, R, do)
Definition: ppc64-tdep.c:52
void serial_un_fdopen(struct serial *scb)
Definition: serial.c:357
int serial_drain_output(struct serial *scb)
Definition: serial.c:457
struct serial * serial_fdopen(const int fd)
Definition: serial.c:303
Definition: serial.h:233
Definition: top.h:56
FILE * outstream
Definition: top.h:116
bool target_supports_terminal_ours(void)
Definition: target.c:1109
void gdb_vprintf(struct ui_file *stream, const char *format, va_list args)
Definition: utils.c:1853
void gdb_printf(struct ui_file *stream, const char *format,...)
Definition: utils.c:1865
void(* deprecated_error_begin_hook)(void)
Definition: utils.c:83
void gdb_flush(struct ui_file *stream)
Definition: utils.c:1477
void gdb_puts(const char *linebuffer, struct ui_file *stream)
Definition: utils.c:1788
#define gdb_stderr
Definition: utils.h:193
#define gdb_stdout
Definition: utils.h:188