This thread has been as interesting for what it omitted to say as for what it
did say.
I can think of no reason for using an STCK in new code.
At 23:58:43 on 2042 September 17 the "old" IBM mainframe TOD clock, i.e., the
64-bit STCK value, overflows.
The new STCKE instruction does not have this defect. Its clock values are
13-bytes, i.e., 13 x 8 = 104 bits, in length.
We have, I believe, an obligation to mention the defects of approaches
canvassed here; and we are not very good at doing it.
John Gilmore Ashland, MA 01721-1817 USA
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