#include <nng/nng.h>
typedef struct nng_stat nng_stat;
enum {
NNG_UNIT_NONE,
NNG_UNIT_BYTES,
NNG_UNIT_MESSAGES,
NNG_UNIT_MILLIS,
NNG_UNIT_EVENTS
};
int nng_stat_unit(nng_stat *stat);
This documentation is for version v1.6.0 of NNG, but the latest released version is v1.8.0. see the documentation for v1.8.0 for the most up-to-date information. |
nng_stat_unit(3)
NAME
nng_stat_unit - get statistic unit
SYNOPSIS
DESCRIPTION
The nng_stat_unit()
function returns the unit of quantity measured
by the statistic stat.
The returned value will be one of the following values:
NNG_UNIT_NONE
-
There are no particular units measured. In some cases there may be units, but the type of the unit will be obvious from the name (see
nng_stat_name()
) of the statistic. NNG_UNIT_BYTES
-
The statistic is a count of bytes.
NNG_UNIT_MESSAGES
-
The statistic is a count of messages. Typically, one message corresponds to a single
nng_msg
structure. NNG_UNIT_MILLIS
-
The statistic is a count of milliseconds.
NNG_STAT_EVENTS
-
The statistic is a count of some other type of event.
For statistics that are neither NNG_STAT_COUNTER
nor NNG_STAT_LEVEL
type (see nng_stat_type()
), the unit will
generally be NNG_UNIT_NONE
.
Normally rates can be calculated for NNG_STAT_COUNTER values for
any of these units, but for NNG_UNIT_MILLIS rate calculations are generally
meaningless.
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RETURN VALUES
The units measured by stat.
ERRORS
None.