The following code waits for an asynchronous signal,
SIGALRM bit 14 in the mask.
For the callable service, see
sigwait (BPX1SWT, BPX4SWT) — Wait for a signal.
For the data structure, see
BPXYSIGH — Signal constants. AMODE 64 callers
use
BPX4SWT (sigwait) example.
MVC WAITMASK(8),=XL8'000400000000000000'
SPACE ,
CALL BPX1SWT, Wait for asynchronous signal +
(WAITMASK, Input: Signal mask SIGALRM +
RETVAL, Return value: 0 or -1 +
RETCODE, Return code +
RSNCODE), Reason code +
VL,MF=(E,PLIST) ----------------------------------