Use WAIT and POST to control the parallel execution of tasks as
a means of serialization. The basic WAIT/POST services that are available
to both authorized and unauthorized programs are explained in the
z/OS MVS Programming: Assembler Services Guide.
The additional
forms of WAIT and POST that are available only to authorized programs
are explained in this topic. The additional forms are:
- Cross memory post (ASCB parameter specified).
- Directly posting an ECB without invoking POST.
- A branch entry for the EVENTS service.
- POST exit routine defined by extended ECBs.
- A branch entry for the POST service.
- A branch entry for the WAIT service.