The following code returns the time remaining an alarm,
or ITIMER_REAL as set by setitimer.
For the callable service, see
setitimer (BPX1STR, BPX4STR) — Set the value of the iterval timer.
For the data structure, see
BPXYITIM — Map getitimer, setitimer structure. AMODE 64 callers
use
BPX4STR (setitimer) example.
LA R15,2 Initial value 2.5 seconds
ST R15,ITIMISECONDS
L R15,=A(500000)
ST R15,ITIMIMICROSEC
L R15,0 No reload value
ST R15,ITIMRSECONDS
ST R15,ITIMRMICROSEC
LA R15,ITIM Output mapping structure
ST R15,ITIMA ->structure
CALL BPX1STR, Get process data +
(=A(ITIMER_REAL), Input: Relative process token +
ITIMA, In : ->Buffer, mapped by BPXYITIM +
ITIMA, Out: ->Buffer, mapped by BPXYITIM +
RETVAL, Return value: -1, 0 +
RETCODE, Return code +
RSNCODE), Reason code +
VL,MF=(E,PLIST) ----------------------------------