qemu/util/qemu-error.c
Paolo Bonzini 397d30e940 qemu-error: remove dependency of stubs on monitor
Leave the implementation of error_vprintf and error_vprintf_unless_qmp
(the latter now trivially wrapped by error_printf_unless_qmp) to
libqemustub.a and monitor.c.  This has two advantages: it lets us
remove the monitor_printf and monitor_vprintf stubs, and it lets
tests provide a different implementation of the functions that uses
g_test_message.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1477326663-67817-2-git-send-email-pbonzini@redhat.com>
2016-11-01 16:06:57 +01:00

220 lines
4.6 KiB
C

/*
* 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 "qemu/osdep.h"
#include "monitor/monitor.h"
#include "qemu/error-report.h"
void error_printf(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error_vprintf(fmt, ap);
va_end(ap);
}
void error_printf_unless_qmp(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error_vprintf_unless_qmp(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;
}
const char *error_get_progname(void)
{
return progname;
}
/*
* Print current location to current monitor if we have one, else to stderr.
*/
static void error_print_loc(void)
{
const char *sep = "";
int i;
const char *const *argp;
if (!cur_mon && progname) {
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("%s", sep);
}
}
bool enable_timestamp_msg;
/*
* Print an error message to current monitor if we have one, else to stderr.
* Format arguments like vsprintf(). The resulting message should be
* a single phrase, with no newline or trailing punctuation.
* Prepend the current location and append a newline.
* It's wrong to call this in a QMP monitor. Use error_setg() there.
*/
void error_vreport(const char *fmt, va_list ap)
{
GTimeVal tv;
gchar *timestr;
if (enable_timestamp_msg && !cur_mon) {
g_get_current_time(&tv);
timestr = g_time_val_to_iso8601(&tv);
error_printf("%s ", timestr);
g_free(timestr);
}
error_print_loc();
error_vprintf(fmt, ap);
error_printf("\n");
}
/*
* Print an error message to current monitor if we have one, else to stderr.
* Format arguments like sprintf(). The resulting message should be a
* single phrase, with no newline or trailing punctuation.
* Prepend the current location and append a newline.
* It's wrong to call this in a QMP monitor. Use error_setg() there.
*/
void error_report(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error_vreport(fmt, ap);
va_end(ap);
}