pmGetInDom(3) — Linux manual page


PMGETINDOM(3)             Library Functions Manual             PMGETINDOM(3)

NAME         top

       pmGetInDom  -  get instance identifiers for a performance metrics in‐
       stance domain

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       int pmGetInDom(pmInDom indom, int **instlist, char ***namelist);

       cc ... -lpcp

DESCRIPTION         top

       In the current Performance Metrics Application Programming Interface
       (PMAPI) context, locate the description of the instance domain indom,
       and return via instlist the internal instance identifiers for all
       instances, and via namelist the full external identifiers for all
       instances.  The number of instances found is returned as the function
       value (else less than zero to indicate an error).

       The value for the instance domain indom is typically extracted from a
       pmDesc structure, following a call to pmLookupDesc(3) for a
       particular performance metric.

       The resulting lists of instance identifiers (instlist and namelist),
       and the names that the elements of namelist point to, will have been
       allocated by pmGetInDom with two calls to malloc(3), and it is the
       responsibility of the caller to free(instlist) and free(namelist) to
       release the space when it is no longer required.

       When the result of pmGetInDom is less than one, both instlist and
       namelist are undefined (no space will have been allocated, and so
       calling free(3) is a singularly bad idea).


       Environment variables with the prefix PCP_ are used to parameterize
       the file and directory names used by PCP.  On each installation, the
       file /etc/pcp.conf contains the local values for these variables.
       The $PCP_CONF variable may be used to specify an alternative
       configuration file, as described in pcp.conf(5).  Values for these
       variables may be obtained programmatically using the pmGetConfig(3)

SEE ALSO         top

       PMAPI(3), pmGetConfig(3), pmGetInDomArchive(3), pmLookupDesc(3),
       pmLookupInDom(3), pmNameInDom(3), pcp.conf(5) and pcp.env(5).

DIAGNOSTICS         top

              indom is not a valid instance domain identifier

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
       2020-11-01.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-10-30.)  If you discover any
       rendering problems in this HTML version of the page, or you believe
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       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                       PMGETINDOM(3)

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