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NAME | C SYNOPSIS | DESCRIPTION | CAVEAT | DIAGNOSTICS | 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).
The PMDA must be using PMDA_INTERFACE_4 or later, as specified in
the call to pmdaDSO(3) or pmdaDaemon(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).
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 2025-02-02.
(At that time, the date of the most recent commit that was found
in the repository was 2025-01-30.) 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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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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