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NAME | C SYNOPSIS | DESCRIPTION | CAVEAT | DIAGNOSTICS | SEE ALSO | COLOPHON |
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PMDAPMID(3) Library Functions Manual PMDAPMID(3)
pmdaPMID - translate a dynamic performance metric name into a PMID
#include <pcp/pmapi.h>
#include <pcp/pmda.h>
int pmdaPMID(char *name, pmID *pmid, pmdaExt *pmda);
cc ... -lpcp_pmda -lpcp
As part of the Performance Metrics Domain Agent (PMDA) API (see
PMDA(3)), pmdaPMID is the generic callback for translating a dy‐
namic 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 ver‐
sion.four.pmid of the pmdaInterface structure) and implements the
translation from a dynamic performance metric name into the asso‐
ciated pmid.
The PMDA must be using PMDA_INTERFACE_4 or later, as specified in
the call to pmdaDSO(3) or pmdaDaemon(3).
pmdaPMID returns PM_ERR_NAME if the name is not recognized or can‐
not be translated, else returns 0.
PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3), pmdaMain(3) and
pmLookupName(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation 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
2025-08-11. (At that time, the date of the most recent commit
that was found in the repository was 2025-08-11.) 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 PMDAPMID(3)
Pages that refer to this page: pmdamain(3)
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HTML rendering created 2025-09-06 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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