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pmparseinterval(3)

NAME

   pmParseInterval - convert interval string to timeval structure

C SYNOPSIS

   #include <pcp/pmapi.h>

   int pmParseInterval(const char *string, struct timeval *rslt,
           char **errmsg);

   cc ... -lpcp

DESCRIPTION

   pmParseInterval parses the argument string specifying  an  interval  of
   time  and  fills  in  the  tv_sec  and  tv_usec  components of the rslt
   structure to represent that interval.

   The input string is most commonly the argument following a  -t  command
   line  option to a PCP application, and the syntax is fully described in
   PCPIntro(1).

DIAGNOSTICS

   pmParseInterval returns 0 and errmsg is undefined  if  the  parsing  is
   successful.

   If   the   given  string  does  not  conform  to  the  required  syntax
   pmParseInterval returns -1 and a dynamically  allocated  error  message
   string  in  errmsg.  The error message is terminated with a newline and
   includes the text of the input string along with an  indicator  of  the
   position at which the error was detected, e.g.
             4minutes 30mumble
                        ^ -- unexpected value

   In  the case of an error, the caller is responsible for calling free(3)
   to release the space allocated for errmsg.

SEE ALSO

   PCPIntro(1), free(3), PMAPI(3) and pmParseTimeWindow(3).



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