performance

PMDAPMID(3)						     Library Functions Manual						       PMDAPMID(3)

NAME

       pmdaPMID - translate a dynamic performance metric name into a PMID

C SYNOPSIS

       #include <pcp/pmapi.h>
       #include <pcp/impl.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).

Performance Co-Pilot							PCP							       PMDAPMID(3)