pmdaname(3) — Linux manual page


PMDANAME(3)             Library Functions Manual             PMDANAME(3)

NAME         top

       pmdaName - translate a PMID to a set of dynamic performance
       metric names

C SYNOPSIS         top

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

       int pmdaName(pmID pmid, char ***nameset, pmdaExt *pmda);

       cc ... -lpcp_pmda -lpcp

DESCRIPTION         top

       As part of the Performance Metrics Domain Agent (PMDA) API (see
       PMDA(3)), pmdaName is the generic callback for translating a pmid
       into one or more dynamic metric names (nameset).

       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), pmdaName is a skeleton implementation that returns

       A PMDA that supports dynamic performance metrics will provide a
       private callback that replaces pmdaName (by assignment to of the pmdaInterface structure) and implements
       the translation from a pmid to a set of dynamic performance
       metric names returned via nameset.  The behaviour, return values
       and memory allocation rules for nameset are the same as for

CAVEAT         top

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

DIAGNOSTICS         top

       pmdaName returns PM_ERR_PMID if the name is not recognized or
       cannot be translated, otherwise the number of metric names found
       (most commonly 1).

SEE ALSO         top

       PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3),
       pmNameAll(3) and pmNameID(3).

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
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       (At that time, the date of the most recent commit that was found
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Performance Co-Pilot               PCP                       PMDANAME(3)

Pages that refer to this page: pmdamain(3)