[fpc-devel] StdOut capture for FPC RTL

[Anton Kavalenka]

?? 25.11.2010 12:01, Jonas Maebe ???????(??):
>
> On 25 Nov 2010, at 10:52, Anton Kavalenka wrote:
>
>> Due to incompatibility of RTL between FPC and Delphi my capturing 
>> tricks not work.
>> BTW what the real reason to make these files as threadvar?
>
> To prevent multiple threads writing to stdin/stdout/sterr at the same 
> time from corrupting each other's data (all of these text files use an 
> internal buffer, even when the output is immediately flushed afterwards).
>
>
> Jonas
>
>
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Is not the better way to use something like this:

lock_output();
try
   // do something nasty with the buffer
finally
    flush(output);
   unlock_output();
end;

There is NO other runtimes on this planet instead FPC RTL which take 
care of per-thread buffer of output.
It is programmers duty to lock/flush buffer in multithreaded environments.

If FPC wants to be so nice - let's introduce critical section in output 
structure.
Any outputs would be suspended until a thread acquires it by write 
operation.

regards,
Anton
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