On Mon, 11 Oct 2010, Michael Schnell wrote:
On 10/08/2010 05:44 PM, Reimar Grabowski wrote:
As I said, threading is an "advanced" feature, and clearly here are
many developers that are afraid of something they don't understand, so
simply think banning the feature is the solution.
In fact IMHO "Object Oriented" "Event Driven" programming such as provided by
Delphi/FPC is all about avoiding the complexity of threads and still being
able to handle asynchronous events (such as GUI events) by having the RTL
transform ()and the OS them into "run-to-completion" Language-Events by
means of queuing them in an event queue.
Of course the leads to restriction with latency and (when running on a
multi-Core system) performance.
Simply learn
multi-threading, get some experience with it, then using threads are
not a problem. It's the same deal as using Pointers. IF YOU DON'T KNOW
WHAT YOU ARE DOING, YOU ARE F**KED.
Yep ! The language and RTL should decently support threading for those that
need it and are willing to deal with the implications and complexity. This
includes providing means to notify the main thread from worker threads as
well in a synchronous way (such a s TThread.Synchronize) as in an
asynchronous way (such as TThread.Queue or (better) "procedure...message" ore
(even better) a decent event queue such as provided by MSE. This of course
automatically includes TThread.Waitfor.
Of course in this event queue GUI events need to be automatically merged in
case a GUI Widget-Type is used.
It would be good if you could provide a patch, instead of continuously
restating your desire of this feature. You manage to bring it up quite
often. That means you think about it often, so why not try an implementation
while you're at it ?
If it wasn't implemented till now, it's because none of the core developers
sees the need for it, and by the looks of it, this will not change in the
near future. You can change this by providing a patch. It does not need to
be perfect, but it should provide a working - cross-platform - start of an
implementation. Then we can see where we can fit it in. You can start by
creating an descendent of TCustomApplication or so: TCustomEventApplication.
Michael.
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