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.


       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


COLOPHON         top

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Performance Co-Pilot               PCP                PMAUNDELTAINDOM(3)

Pages that refer to this page: pmatrydeltaindom(3)