[Lazarus] Multi-threading support in IDE

[Martin]

sorry tested now.
doesn't work, outside windows world...

So even a blocking pipe should have some kind of CanRead that returns 
immediately?

Martin wrote:
> Graeme Geldenhuys wrote:
>> Martin wrote:
>>> make it
>>>       if (Application<>nil) and 
>>> (abs(LastProcessMessages-Now)>((1/86400)/10))
>> This does not make much difference on my system.  :-(
> Hm I tested on windows only. Try adding the 2 lines I inserted with 
> comments (I have not tested this!!)
>
> Just seeing
>      if (TheAsyncProcess=nil) and (fProcess.Output<>nil) then begin
>        // using a blocking TProcess
> //        Count := 0;
> //        if fProcess.Output.NumBytesAvailable > 0 then
>          Count:=fProcess.Output.Read(Buf[1],length(Buf));
>        if Count=0 then begin
>          // no output on blocking means, process has ended
>          break;
>        end;
>      end;
>
>
>
> One more remark, if it works, it will allow normal editing,etc.
>
> But you can not do:
> - search and replace
> - find in files
> ...
>
> Because those themself are long running, and while being inside the 
> compile's processMessages, the compile will not read the output, and 
> that may block compiling.
>
> This is because all this stuff is not event-driven, so it cannnot be 
> mixed.
> It would work in a single thread and all this, but it must be fully 
> event-driven.
>
>
>
> -- 
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