pmaddprofile(3) — Linux manual page


PMADDPROFILE(3)           Library Functions Manual           PMADDPROFILE(3)

NAME         top

       pmAddProfile - add instance(s) to the current PMAPI instance profile

C SYNOPSIS         top

       #include <pcp/pmapi.h>

       int pmAddProfile(pmInDom indom, int numinst, int *instlist);

       cc ... -lpcp

DESCRIPTION         top

       The set of instances for performance metrics returned from a
       pmFetch(3) call may be filtered or restricted using an instance
       profile.  There is one instance profile for each context the
       application creates at the Performance Metrics Application
       Programming Interface (PMAPI(3)), and each instance profile may
       include instances from one or more instance domains (see

       pmAddProfile may be used to add new instance specifications to the
       instance profile of the current PMAPI context.

       In the simplest variant, the list of instances identified by the
       instlist argument for the indom instance domain are added to the
       instance profile.  The list of instance identifiers contains numinst

       The indom value would normally be extracted from a call to
       pmLookupDesc(3) for a particular performance metric, and the
       instances in instlist would typically be determined by calls to
       pmGetInDom(3) or pmLookupInDom(3).

       To select all instances in all instance domains, use

          pmAddProfile(PM_INDOM_NULL, 0, (int *)0)

       This is the only case where indom may be equal to PM_INDOM_NULL.  If
       numinst is zero, or instlist is NULL, then all instances in indom are

SEE ALSO         top

       PMAPI(3), pmDelProfile(3), pmFetch(3), pmGetInDom(3),
       pmLookupDesc(3), pmLookupInDom(3), pmNewContext(3), pmUseContext(3)
       and pmWhichContext(3).

DIAGNOSTICS         top

              indom was PM_INDOM_NULL and instlist was not empty

CAVEAT         top

       It is possible to add non-existent instance domains and non-existent
       instances to an instance profile.  None of the routines that use the
       instance profile will ever issue an error if you do this.  The cost
       of checking, when checking is possible, outweighs any benefits.

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
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       2020-08-13.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-08-11.)  If you discover any
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       (which is not part of the original manual page), send a mail to

Performance Co-Pilot                 PCP                     PMADDPROFILE(3)