__pmconverttime(3) — Linux manual page


PMCONVERTTIME(3)          Library Functions Manual          PMCONVERTTIME(3)

NAME         top

       __pmConvertTime - convert tm structure to timeval structure

C SYNOPSIS         top

       #include "pmapi.h"
       #include "libpcp.h"

       int __pmConvertTime(struct tm *tmin, struct timeval *origin,
               struct timeval *rslt);

       cc ... -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

       __pmConvertTime accepts a tm structure that has been filled in by
       __pmParseCtime(3) and a reference time point origin, and fills in the
       given rslt structure with the time the user meant when he specified a
       partial ctime or positive or negative time interval.

       Typically, the argument origin is the start time for a set of  PCP
       archive logs, unless the user specified a negative interval offset,
       in which case it is the end time of the log.

       __pmConvertTime returns 0 if successful.  It returns -1 and writes an
       error message to stderr, if an error is detected.

       Use pmNewZone(3), pmNewContextZone(3) or pmUseZone(3) to establish a
       new current timezone that will effect __pmConvertTime.

SEE ALSO         top

       PMAPI(3), pmNewContextZone(3), pmNewZone(3), pmParseInterval(3),
       pmParseTimeWindow(3), pmUseZone(3), __pmParseCtime(3) and

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
       pcp@groups.io.  This page was obtained from the project's upstream
       Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
       2020-09-18.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-09-18.)  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

Performance Co-Pilot                 PCP                    PMCONVERTTIME(3)