__pmConvertTime man page

__pmConvertTime — convert tm structure to timeval structure

C Synopsis

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

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

cc ... -lpcp


__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

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

Referenced By

__pmParseCtime(3), __pmParseTime(3).

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