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pmdastore(3) — Linux manual page

PMDASTORE(3)             Library Functions ManualPMDASTORE(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 (seePMDA(3)),pmdaStoreis the generic callback for  storing  a  value       into  a  metric.pmdaStoreis 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 bypmstore(1) is very       application dependent.

CAVEAT        top

       The PMDA must be usingPMDA_INTERFACE_2or later, as specified  in       the call topmdaDSO(3) orpmdaDaemon(3).

DIAGNOSTICS        top

pmdaStorereturnsPM_ERR_PERMISSIONto indicate that no metrics       may be modified.

SEE ALSO        top

pmstore(1),PMAPI(3),PMDA(3),pmdaDaemon(3),pmdaDSO(3)   andpmStore(3).

COLOPHON        top

       This  page is part of thePCP (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 isnot part of the original manual page),  send  a       mail to man-pages@man7.orgPerformance Co-Pilot               PCPPMDASTORE(3)

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

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