vhost-net: compile it on all targets that have virtio-net.
[qemu/ar7.git] / util / qemu-error.c
blobfcbe8a1f745fcb713e110fa552b2ee9fd42f838c
1 /*
2 * Error reporting
4 * Copyright (C) 2010 Red Hat Inc.
6 * Authors:
7 * Markus Armbruster <armbru@redhat.com>,
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
13 #include "qemu/osdep.h"
14 #include "monitor/monitor.h"
15 #include "qemu/error-report.h"
18 * @report_type is the type of message: error, warning or
19 * informational.
21 typedef enum {
22 REPORT_TYPE_ERROR,
23 REPORT_TYPE_WARNING,
24 REPORT_TYPE_INFO,
25 } report_type;
27 void error_printf(const char *fmt, ...)
29 va_list ap;
31 va_start(ap, fmt);
32 error_vprintf(fmt, ap);
33 va_end(ap);
36 void error_printf_unless_qmp(const char *fmt, ...)
38 va_list ap;
40 va_start(ap, fmt);
41 error_vprintf_unless_qmp(fmt, ap);
42 va_end(ap);
45 static Location std_loc = {
46 .kind = LOC_NONE
48 static Location *cur_loc = &std_loc;
51 * Push location saved in LOC onto the location stack, return it.
52 * The top of that stack is the current location.
53 * Needs a matching loc_pop().
55 Location *loc_push_restore(Location *loc)
57 assert(!loc->prev);
58 loc->prev = cur_loc;
59 cur_loc = loc;
60 return loc;
64 * Initialize *LOC to "nowhere", push it onto the location stack.
65 * The top of that stack is the current location.
66 * Needs a matching loc_pop().
67 * Return LOC.
69 Location *loc_push_none(Location *loc)
71 loc->kind = LOC_NONE;
72 loc->prev = NULL;
73 return loc_push_restore(loc);
77 * Pop the location stack.
78 * LOC must be the current location, i.e. the top of the stack.
80 Location *loc_pop(Location *loc)
82 assert(cur_loc == loc && loc->prev);
83 cur_loc = loc->prev;
84 loc->prev = NULL;
85 return loc;
89 * Save the current location in LOC, return LOC.
91 Location *loc_save(Location *loc)
93 *loc = *cur_loc;
94 loc->prev = NULL;
95 return loc;
99 * Change the current location to the one saved in LOC.
101 void loc_restore(Location *loc)
103 Location *prev = cur_loc->prev;
104 assert(!loc->prev);
105 *cur_loc = *loc;
106 cur_loc->prev = prev;
110 * Change the current location to "nowhere in particular".
112 void loc_set_none(void)
114 cur_loc->kind = LOC_NONE;
118 * Change the current location to argument ARGV[IDX..IDX+CNT-1].
120 void loc_set_cmdline(char **argv, int idx, int cnt)
122 cur_loc->kind = LOC_CMDLINE;
123 cur_loc->num = cnt;
124 cur_loc->ptr = argv + idx;
128 * Change the current location to file FNAME, line LNO.
130 void loc_set_file(const char *fname, int lno)
132 assert (fname || cur_loc->kind == LOC_FILE);
133 cur_loc->kind = LOC_FILE;
134 cur_loc->num = lno;
135 if (fname) {
136 cur_loc->ptr = fname;
140 static const char *progname;
143 * Set the program name for error_print_loc().
145 void error_set_progname(const char *argv0)
147 const char *p = strrchr(argv0, '/');
148 progname = p ? p + 1 : argv0;
151 const char *error_get_progname(void)
153 return progname;
157 * Print current location to current monitor if we have one, else to stderr.
159 static void print_loc(void)
161 const char *sep = "";
162 int i;
163 const char *const *argp;
165 if (!cur_mon && progname) {
166 fprintf(stderr, "%s:", progname);
167 sep = " ";
169 switch (cur_loc->kind) {
170 case LOC_CMDLINE:
171 argp = cur_loc->ptr;
172 for (i = 0; i < cur_loc->num; i++) {
173 error_printf("%s%s", sep, argp[i]);
174 sep = " ";
176 error_printf(": ");
177 break;
178 case LOC_FILE:
179 error_printf("%s:", (const char *)cur_loc->ptr);
180 if (cur_loc->num) {
181 error_printf("%d:", cur_loc->num);
183 error_printf(" ");
184 break;
185 default:
186 error_printf("%s", sep);
190 bool enable_timestamp_msg;
192 * Print a message to current monitor if we have one, else to stderr.
193 * @report_type is the type of message: error, warning or informational.
194 * Format arguments like vsprintf(). The resulting message should be
195 * a single phrase, with no newline or trailing punctuation.
196 * Prepend the current location and append a newline.
198 static void vreport(report_type type, const char *fmt, va_list ap)
200 GTimeVal tv;
201 gchar *timestr;
203 if (enable_timestamp_msg && !cur_mon) {
204 g_get_current_time(&tv);
205 timestr = g_time_val_to_iso8601(&tv);
206 error_printf("%s ", timestr);
207 g_free(timestr);
210 print_loc();
212 switch (type) {
213 case REPORT_TYPE_ERROR:
214 break;
215 case REPORT_TYPE_WARNING:
216 error_printf("warning: ");
217 break;
218 case REPORT_TYPE_INFO:
219 error_printf("info: ");
220 break;
223 error_vprintf(fmt, ap);
224 error_printf("\n");
228 * Print an error message to current monitor if we have one, else to stderr.
229 * Format arguments like vsprintf(). The resulting message should be
230 * a single phrase, with no newline or trailing punctuation.
231 * Prepend the current location and append a newline.
232 * It's wrong to call this in a QMP monitor. Use error_setg() there.
234 void error_vreport(const char *fmt, va_list ap)
236 vreport(REPORT_TYPE_ERROR, fmt, ap);
240 * Print a warning message to current monitor if we have one, else to stderr.
241 * Format arguments like vsprintf(). The resulting message should be
242 * a single phrase, with no newline or trailing punctuation.
243 * Prepend the current location and append a newline.
245 void warn_vreport(const char *fmt, va_list ap)
247 vreport(REPORT_TYPE_WARNING, fmt, ap);
251 * Print an information message to current monitor if we have one, else to
252 * stderr.
253 * Format arguments like vsprintf(). The resulting message should be
254 * a single phrase, with no newline or trailing punctuation.
255 * Prepend the current location and append a newline.
257 void info_vreport(const char *fmt, va_list ap)
259 vreport(REPORT_TYPE_INFO, fmt, ap);
263 * Print an error message to current monitor if we have one, else to stderr.
264 * Format arguments like sprintf(). The resulting message should be
265 * a single phrase, with no newline or trailing punctuation.
266 * Prepend the current location and append a newline.
267 * It's wrong to call this in a QMP monitor. Use error_setg() there.
269 void error_report(const char *fmt, ...)
271 va_list ap;
273 va_start(ap, fmt);
274 vreport(REPORT_TYPE_ERROR, fmt, ap);
275 va_end(ap);
279 * Print a warning message to current monitor if we have one, else to stderr.
280 * Format arguments like sprintf(). The resulting message should be a
281 * single phrase, with no newline or trailing punctuation.
282 * Prepend the current location and append a newline.
284 void warn_report(const char *fmt, ...)
286 va_list ap;
288 va_start(ap, fmt);
289 vreport(REPORT_TYPE_WARNING, fmt, ap);
290 va_end(ap);
294 * Print an information message to current monitor if we have one, else to
295 * stderr.
296 * Format arguments like sprintf(). The resulting message should be a
297 * single phrase, with no newline or trailing punctuation.
298 * Prepend the current location and append a newline.
300 void info_report(const char *fmt, ...)
302 va_list ap;
304 va_start(ap, fmt);
305 vreport(REPORT_TYPE_INFO, fmt, ap);
306 va_end(ap);
310 * Like error_report(), except print just once.
311 * If *printed is false, print the message, and flip *printed to true.
312 * Return whether the message was printed.
314 bool error_report_once_cond(bool *printed, const char *fmt, ...)
316 va_list ap;
318 assert(printed);
319 if (*printed) {
320 return false;
322 *printed = true;
323 va_start(ap, fmt);
324 vreport(REPORT_TYPE_ERROR, fmt, ap);
325 va_end(ap);
326 return true;
330 * Like warn_report(), except print just once.
331 * If *printed is false, print the message, and flip *printed to true.
332 * Return whether the message was printed.
334 bool warn_report_once_cond(bool *printed, const char *fmt, ...)
336 va_list ap;
338 assert(printed);
339 if (*printed) {
340 return false;
342 *printed = true;
343 va_start(ap, fmt);
344 vreport(REPORT_TYPE_WARNING, fmt, ap);
345 va_end(ap);
346 return true;