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/impl.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 callback which
       does permit metrics to be altered by pmstore(1) is very application

DIAGNOSTICS         top

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

CAVEAT         top

       The PMDA must be using PMDA_PROTOCOL_2 or later, as specified in the
       call to pmdaDSO(3) or pmdaDaemon(3).

SEE ALSO         top

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

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at ⟨⟩.
       If you have a bug report for this manual page, send it to  This page was obtained from the project's upstream
       Git repository ⟨⟩ on
       2017-09-15.  If you discover any rendering problems in this HTML ver‐
       sion 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 man‐
       ual page), send a mail to

Performance Co-Pilot                 PCP                        PMDASTORE(3)

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