NAME

       __pmConvertTime, __pmConvertHighResTime - convert tm structure into seconds

C SYNOPSIS

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

       int __pmConvertTime(struct tm *tmin, struct timeval *origin, struct timeval *rslt);
       int __pmConvertHighResTime(struct tm *tmin, struct timespec *origin,
               struct timespec *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 and __pmConvertHighResTime accept 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 specifying 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  and  __pmConvertHighResTime  return  0 if successful.  They return -1 and
       write 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

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