NAME

       __pmConvertTime - convert tm structure to timeval structure

C SYNOPSIS

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

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

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

DESCRIPTION

       __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 par‐
       tial 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 speci‐
       fied 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  er‐
       ror is detected.

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

SEE ALSO

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

Performance Co-Pilot                                   PCP                                      PMCONVERTTIME(3)