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NAME | C SYNOPSIS | DESCRIPTION | DIAGNOSTICS | CAVEAT | SEE ALSO | COLOPHON |
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PMDANAME(3) Library Functions Manual PMDANAME(3)
pmdaName - translate a PMID to a set of dynamic performance metric
names
#include <pcp/pmapi.h>
#include <pcp/pmda.h>
int pmdaName(pmID pmid, char ***nameset, pmdaExt *pmda);
cc ... -lpcp_pmda -lpcp
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 PM_ERR_NAME.
A PMDA that supports dynamic performance metrics will provide a
private callback that replaces pmdaName (by assignment to
version.four.name 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 pmNameAll(3).
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).
The PMDA must be using PMDA_PROTOCOL_4 or later, as specified in the
call to pmdaDSO(3) or pmdaDaemon(3).
PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3),
pmNameAll(3) and pmNameID(3).
This page is part of the PCP (Performance Co-Pilot) project.
Information about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
pcp@groups.io. This page was obtained from the project's upstream
Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
2018-02-02. (At that time, the date of the most recent commit that
was found in the repository was 2018-02-02.) If you discover any
rendering problems in this HTML version of the page, or you believe
there is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
Performance Co-Pilot PCP PMDANAME(3)
Pages that refer to this page: pmdamain(3)
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