Description

   For both process and children times, the structure breaks down
   the time by user and system time. Since the OpenVMS system does
   not differentiate between system and user time, all system times
   are returned as 0. Accumulated CPU times are returned in 10-
   millisecond units.

   Only the accumulated times for child processes running a C main
   program or a program that calls VAXC$CRTL_INIT or DECC$CRTL_INIT
   are included.

   On OpenVMS Version 7.0 and higher systems, the times function
   returns the elapsed real time in clock ticks since an arbitrary
   reference time in the past (for example, system startup time).
   This reference time does not change from one times function call
   to another. The return value can overflow the possible range of
   type clock_t values. When times fails, it returns a value of -1.
   The C RTL uses system-boot time as its reference time.