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monitor: New argument type 'b'

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This is a double value with optional suffixes G, g, M, m, K, k.  We'll
need this to get migrate_set_speed() QMP-ready.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2010-01-25 14:23:03 +01:00 committed by Anthony Liguori
parent acc3b0336c
commit 3350a4dd07
1 changed files with 64 additions and 0 deletions
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64
monitor.c
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@ -47,6 +47,7 @@
#include "kvm.h"
#include "acl.h"
#include "qint.h"
#include "qfloat.h"
#include "qlist.h"
#include "qdict.h"
#include "qbool.h"
@ -70,6 +71,10 @@
* 'l' target long (32 or 64 bit)
* 'M' just like 'l', except in user mode the value is
* multiplied by 2^20 (think Mebibyte)
* 'b' double
* user mode accepts an optional G, g, M, m, K, k suffix,
* which multiplies the value by 2^30 for suffixes G and
* g, 2^20 for M and m, 2^10 for K and k
* '/' optional gdb-like print format (like "/10x")
*
* '?' optional type (for all types, except '/')
@ -3299,6 +3304,27 @@ static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
return 0;
}
static int get_double(Monitor *mon, double *pval, const char **pp)
{
const char *p = *pp;
char *tailp;
double d;
d = strtod(p, &tailp);
if (tailp == p) {
monitor_printf(mon, "Number expected\n");
return -1;
}
if (d != d || d - d != 0) {
/* NaN or infinity */
monitor_printf(mon, "Bad number\n");
return -1;
}
*pval = d;
*pp = tailp;
return 0;
}
static int get_str(char *buf, int buf_size, const char **pp)
{
const char *p;
@ -3635,6 +3661,38 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon,
qdict_put(qdict, key, qint_from_int(val));
}
break;
case 'b':
{
double val;
while (qemu_isspace(*p))
p++;
if (*typestr == '?') {
typestr++;
if (*p == '\0') {
break;
}
}
if (get_double(mon, &val, &p) < 0) {
goto fail;
}
if (*p) {
switch (*p) {
case 'K': case 'k':
val *= 1 << 10; p++; break;
case 'M': case 'm':
val *= 1 << 20; p++; break;
case 'G': case 'g':
val *= 1 << 30; p++; break;
}
}
if (*p && !qemu_isspace(*p)) {
monitor_printf(mon, "Unknown unit suffix\n");
goto fail;
}
qdict_put(qdict, key, qfloat_from_double(val));
}
break;
case '-':
{
const char *tmp = p;
@ -4060,6 +4118,12 @@ static int check_arg(const CmdArgs *cmd_args, QDict *args)
return -1;
}
break;
case 'b':
if (qobject_type(value) != QTYPE_QINT && qobject_type(value) != QTYPE_QFLOAT) {
qemu_error_new(QERR_INVALID_PARAMETER_TYPE, name, "number");
return -1;
}
break;
case '-':
if (qobject_type(value) != QTYPE_QINT &&
qobject_type(value) != QTYPE_QBOOL) {