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On Fri, Aug 16, 2019 at 8:23 AM Jim Oberholtzer
<midrangel@xxxxxxxxxxxxxxxxx> wrote:
Agreed. Data Queues would work too. I just think user spaces are a bit
faster, albeit maybe not enough to care.
The reason I like data queue's is that I can send structured data
records back and forth easily.
Generate a unique key, put data into the queue using that key, call a
program and pass the name of the queue and the key (or just the key,
if the queue name is constant), and the called program retrieves the
data using the key.
If the called program needs to generate a response, it puts the data
back on the same queue using the same key, and the caller processes
the data.
The other nice thing about data queues is that you can also have a
program simply watch a queue for data to arrive.
I do that with some java code ... I create a thread that watches a
data queue and waits for data to arrive (timing out periodically to
check if it needs to shut down). The RPG code sends the queue entry
and the java process handles it.
david
midrange.com
