pmaundeltaindom(3) — Linux manual page

PMAUNDELTAINDOM(3)       Library Functions Manual      PMAUNDELTAINDOM(3)

NAME         top

       pmaUndeltaInDom - find ``full'' instance ___domain matching a
       ``delta'' instance ___domain

C SYNOPSIS         top

       #include <pcp/pmapi.h>
       #include <pcp/libpcp.h>
       #include <pcp/archive.h>

       __pmLogInDom *pmaUndeltaInDom(__pmLogCtl *lcp, __int32_t *buf);

       cc ... -lpcp_archive -lpcp

CAVEAT         top

       This documentation is intended for internal Performance Co-Pilot
       (PCP) developer use.

       These interfaces are not part of the PCP APIs that are guaranteed
       to remain fixed across releases, and they may not work, or may
       provide different semantics at some point in the future.

DESCRIPTION         top

       Find the loaded ``full'' instance ___domain that matches a ``delta''
       instance ___domain.

       The caller ensures the physical metadata record for the ``delta''
       instance ___domain has been read into buf.  The associated archive
       control structure is identified by lcp, which implies the input
       archive has also been opened with pmNewContext(3).

       pmaUndeltaInDom starts by extracting the timestamp and the
       instance ___domain number for the ``delta'' instance ___domain from buf.
       With this information, __pmLogSearchInDom(3) is called to find the
       matching loaded instance ___domain, which will have been converted
       from a ``delta'' instance ___domain to a ``full'' instance ___domain in
       the process.

       pmaUndeltaInDom is most useful for applications that read physical
       metadata records and need to operate on ``full'' instance domains,
       rather than the ``delta'' instance domains that occur in Version 3
       archives.

DIAGNOSTICS AND RETURN VALUES         top

       Lots of warning babble if the matching loaded instance ___domain
       cannot be found, and the return value is NULL in this case.

SEE ALSO         top

       PMAPI(3),

COLOPHON         top

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨http://www.pcp.io/⟩.  If you have a bug report for this manual
       page, send it to [email protected].  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/performancecopilot/pcp.git⟩ on 2025-02-02.
       (At that time, the date of the most recent commit that was found
       in the repository was 2025-01-30.)  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
       [email protected]

Performance Co-Pilot               PCP                 PMAUNDELTAINDOM(3)

Pages that refer to this page: pmatrydeltaindom(3)

HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.