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
|
/*
* Error reporting
*
* Copyright (C) 2010 Red Hat Inc.
*
* Authors:
* Markus Armbruster <armbru@redhat.com>,
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include <stdio.h>
#include "monitor.h"
#include "sysemu.h"
/*
* Print to current monitor if we have one, else to stderr.
* TODO should return int, so callers can calculate width, but that
* requires surgery to monitor_vprintf(). Left for another day.
*/
void error_vprintf(const char *fmt, va_list ap)
{
if (cur_mon) {
monitor_vprintf(cur_mon, fmt, ap);
} else {
vfprintf(stderr, fmt, ap);
}
}
/*
* Print to current monitor if we have one, else to stderr.
* TODO just like error_vprintf()
*/
void error_printf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error_vprintf(fmt, ap);
va_end(ap);
}
static Location std_loc = {
.kind = LOC_NONE
};
static Location *cur_loc = &std_loc;
/*
* Push location saved in LOC onto the location stack, return it.
* The top of that stack is the current location.
* Needs a matching loc_pop().
*/
Location *loc_push_restore(Location *loc)
{
assert(!loc->prev);
loc->prev = cur_loc;
cur_loc = loc;
return loc;
}
/*
* Initialize *LOC to "nowhere", push it onto the location stack.
* The top of that stack is the current location.
* Needs a matching loc_pop().
* Return LOC.
*/
Location *loc_push_none(Location *loc)
{
loc->kind = LOC_NONE;
loc->prev = NULL;
return loc_push_restore(loc);
}
/*
* Pop the location stack.
* LOC must be the current location, i.e. the top of the stack.
*/
Location *loc_pop(Location *loc)
{
assert(cur_loc == loc && loc->prev);
cur_loc = loc->prev;
loc->prev = NULL;
return loc;
}
/*
* Save the current location in LOC, return LOC.
*/
Location *loc_save(Location *loc)
{
*loc = *cur_loc;
loc->prev = NULL;
return loc;
}
/*
* Change the current location to the one saved in LOC.
*/
void loc_restore(Location *loc)
{
Location *prev = cur_loc->prev;
assert(!loc->prev);
*cur_loc = *loc;
cur_loc->prev = prev;
}
/*
* Change the current location to "nowhere in particular".
*/
void loc_set_none(void)
{
cur_loc->kind = LOC_NONE;
}
/*
* Change the current location to argument ARGV[IDX..IDX+CNT-1].
*/
void loc_set_cmdline(char **argv, int idx, int cnt)
{
cur_loc->kind = LOC_CMDLINE;
cur_loc->num = cnt;
cur_loc->ptr = argv + idx;
}
/*
* Change the current location to file FNAME, line LNO.
*/
void loc_set_file(const char *fname, int lno)
{
assert (fname || cur_loc->kind == LOC_FILE);
cur_loc->kind = LOC_FILE;
cur_loc->num = lno;
if (fname) {
cur_loc->ptr = fname;
}
}
static const char *progname;
/*
* Set the program name for error_print_loc().
*/
void error_set_progname(const char *argv0)
{
const char *p = strrchr(argv0, '/');
progname = p ? p + 1 : argv0;
}
/*
* Print current location to current monitor if we have one, else to stderr.
*/
void error_print_loc(void)
{
const char *sep = "";
int i;
const char *const *argp;
if (!cur_mon) {
fprintf(stderr, "%s:", progname);
sep = " ";
}
switch (cur_loc->kind) {
case LOC_CMDLINE:
argp = cur_loc->ptr;
for (i = 0; i < cur_loc->num; i++) {
error_printf("%s%s", sep, argp[i]);
sep = " ";
}
error_printf(": ");
break;
case LOC_FILE:
error_printf("%s:", (const char *)cur_loc->ptr);
if (cur_loc->num) {
error_printf("%d:", cur_loc->num);
}
error_printf(" ");
break;
default:
error_printf(sep);
}
}
/*
* Print an error message to current monitor if we have one, else to stderr.
* Prepend the current location and append a newline.
* It's wrong to call this in a QMP monitor. Use qerror_report() there.
*/
void error_report(const char *fmt, ...)
{
va_list ap;
error_print_loc();
va_start(ap, fmt);
error_vprintf(fmt, ap);
va_end(ap);
error_printf("\n");
}
void qerror_report_internal(const char *file, int linenr, const char *func,
const char *fmt, ...)
{
va_list va;
QError *qerror;
va_start(va, fmt);
qerror = qerror_from_info(file, linenr, func, fmt, &va);
va_end(va);
if (monitor_cur_is_qmp()) {
monitor_set_error(cur_mon, qerror);
} else {
qerror_print(qerror);
QDECREF(qerror);
}
}
|
