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).