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pmdastore(3) — Linux manual page

PMDASTORE(3) Library Functions Manual PMDASTORE(3)

NAME top

 pmdaStore - store a value into a metric for a PMDA

C SYNOPSIS top

 #include <pcp/pmapi.h>
 #include <pcp/pmda.h>
 int pmdaStore(pmResult *result, pmdaExt *pmda);
 cc ... -lpcp_pmda -lpcp

DESCRIPTION top

 As part of the Performance Metrics Domain Agent (PMDA) API (see
 PMDA(3)), pmdaStore is the generic callback for storing a value
 into a metric. pmdaStore is usually a no-op as, by default, no
 metrics can be altered. Also, the implementation of a store call‐
 back which does permit metrics to be altered by pmstore(1) is very
 application dependent.

CAVEAT top

 The PMDA must be using PMDA_INTERFACE_2 or later, as specified in
 the call to pmdaDSO(3) or pmdaDaemon(3).

DIAGNOSTICS top

 pmdaStore returns PM_ERR_PERMISSION to indicate that no metrics
 may be modified.

SEE ALSO top

 pmstore(1), PMAPI(3), PMDA(3), pmdaDaemon(3), pmdaDSO(3) and
 pmStore(3).

COLOPHON top

 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年08月11日. (At that time, the date of the most recent commit
 that was found in the repository was 2025年08月11日.) 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 PMDASTORE(3)

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Pages that refer to this page: pmda(3), pmdadaemon(3), pmdadso(3), pmdamain(3)

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