As part of the Performance Metrics Domain Agent (PMDA) API (see
PMDA(3)),
pmdaStore
is the generic callback for storing a value into a metric.
pmdaStore
is usually a no-op as, by default, no metrics can be altered.
Also, the implementation of a store callback which does permit
metrics to be altered by
pmstore(1)
is very application dependent.
DIAGNOSTICS
pmdaStore
returns
EACCESS
to indicate that no metrics may be modified.
CAVEAT
The PMDA must be using
PMDA_PROTOCOL_2
or later, as specified in the call to
pmdaDSO(3)
or
pmdaDaemon(3).