NAME

       __pmLogWriteMark - append a <mark> record to a PCP archive

C SYNOPSIS

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

       int __pmLogWriteMark(__pmArchCtl *acp, const __pmTimestamp *last_stamp, const __pmTimestamp *inc)

       cc ... -lpcp

CAVEAT

       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 at
       some point in the future they may not work or may provide different semantics.

DESCRIPTION

       __pmLogWriteMark appends a <mark> record to the current data file of a  PCP  archive.   A  <mark>  record
       indicates  a  dicontinuity  in  the  time  series of logged data in the archive, see PCPIntro(1) for more
       information.

       The timestamp of the <mark> record is given by last_stamp optionally incremented by  inc  unless  inc  is
       NULL (in which case no increment is done).

       The current data volume's I/O stream and the archive version (determines the format of the <mark> record)
       are determined from acp.

DIAGNOSTICS AND RETURN VALUES

       The return value is 0 if all is well, else some error code less than zero that  can  be  turned  into  an
       error message by calling pmErrStr(3).

SEE ALSO

       PCPIntro(1), PMAPI(3) and __pmLogWrite(3).