NAME

       pmdaPMID - translate a dynamic performance metric name into a PMID

C SYNOPSIS

       #include <pcp/pmapi.h>
       #include <pcp/pmda.h>

       int pmdaPMID(char *name, pmID *pmid, pmdaExt *pmda);

       cc ... -lpcp_pmda -lpcp

DESCRIPTION

       As  part  of  the  Performance  Metrics  Domain  Agent  (PMDA) API (see PMDA(3)), pmdaPMID is the generic
       callback for translating a dynamic metric name into a PMID (pmid).

       Because implementing dynamic performance metrics requires specific PMDA support, and the facility  is  an
       optional  component  of  a  PMDA  (most  PMDAs do not support dynamic performance metrics), pmdaPMID is a
       skeleton implementation that returns PM_ERR_NAME.

       A PMDA that supports dynamic performance metrics will provide a private callback that  replaces  pmdaPMID
       (by assignment to version.four.pmid of the pmdaInterface structure) and implements the translation from a
       dynamic performance metric name into the associated pmid.

DIAGNOSTICS

       pmdaPMID returns PM_ERR_NAME if the name is not recognized or cannot be translated, else returns 0.

CAVEAT

       The PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the call to pmdaDSO(3) or pmdaDaemon(3).

SEE ALSO

       PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3) and pmLookupName(3).