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qerror: don't delay error message construction 

Today, the error message is only constructed when it's used. This commit
changes qerror to construct the error message when the error object is
built (ie. when the error is reported).

This eliminates the need of storing a pointer to qerror_table[], which
will be dropped soon, and also simplifies the code.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
master
Luiz Capitulino 2012-07-20 12:02:58 -03:00
parent 2b38cf2e03
commit 18da7c0f1f
2 changed files with 5 additions and 26 deletions
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29
qerror.c
View File

@ -385,22 +385,6 @@ static QDict *error_obj_from_fmt_no_fail(const char *fmt, va_list *va)
return ret;
}
static const QErrorStringTable *get_desc_no_fail(const char *fmt)
{
int i;
// FIXME: inefficient loop
for (i = 0; qerror_table[i].error_fmt; i++) {
if (strcmp(qerror_table[i].error_fmt, fmt) == 0) {
return &qerror_table[i];
}
}
fprintf(stderr, "error format '%s' not found\n", fmt);
abort();
}
/**
* qerror_from_info(): Create a new QError from error information
*
@ -414,7 +398,7 @@ static QError *qerror_from_info(const char *fmt, va_list *va)
loc_save(&qerr->loc);
qerr->error = error_obj_from_fmt_no_fail(fmt, va);
qerr->entry = get_desc_no_fail(fmt);
qerr->err_msg = qerror_format(fmt, qerr->error);
return qerr;
}
@ -519,7 +503,7 @@ char *qerror_format(const char *fmt, QDict *error)
*/
QString *qerror_human(const QError *qerror)
{
return qerror_format_desc(qerror->error, qerror->entry);
return qstring_from_str(qerror->err_msg);
}
/**
@ -566,19 +550,13 @@ struct Error
void qerror_report_err(Error *err)
{
QError *qerr;
int i;
qerr = qerror_new();
loc_save(&qerr->loc);
QINCREF(err->obj);
qerr->error = err->obj;
for (i = 0; qerror_table[i].error_fmt; i++) {
if (strcmp(qerror_table[i].error_fmt, err->fmt) == 0) {
qerr->entry = &qerror_table[i];
break;
}
}
qerr->err_msg = qerror_format(err->fmt, qerr->error);
if (monitor_cur_is_qmp()) {
monitor_set_error(cur_mon, qerr);
@ -619,5 +597,6 @@ static void qerror_destroy_obj(QObject *obj)
qerr = qobject_to_qerror(obj);
QDECREF(qerr->error);
g_free(qerr->err_msg);
g_free(qerr);
}

2
qerror.h
View File

@ -27,7 +27,7 @@ typedef struct QError {
QObject_HEAD;
QDict *error;
Location loc;
const QErrorStringTable *entry;
char *err_msg;
} QError;
QString *qerror_human(const QError *qerror);