Gustav Schaffter wrote:
> I think the best live example would build on the event driven
> application mentioned by Dave here.
Yes, that works. And I do want to point out that such applications
can be written _without_ threads--and in fact have been for decades.
Instead, you use signals; something like software interrupt vector
routines.
Same problems, different decade, different solution...
> And as Dave also touched, to communicate between threads in the same
> application, the programmer is *strongly* encouraged to use IPC
> mechanisms, such as pipes, queues, etc.
Of course, one of the "strengths" of threads is that it all happens
within the same system process space--no context switches. Using
IPC mechanisms trigger context switches, so there have been efforts
to do test-and-set mechanisms that are only valid within the context of
the current process (and its set of threads.) Just an observation.
Cheers,
--
Dave Ihnat
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