[Gambas-user] Problems with the IDE and Stream buffering

[Benoît Minisini]

Le 29/08/2013 21:34, Tobias Boege a écrit :
> On Thu, 29 Aug 2013, Beno?t Minisini wrote:
>> Le 26/08/2013 15:30, Tobias Boege a ?crit :
>>> On Wed, 21 Aug 2013, Tobias Boege wrote:
>>>> Hi folks,
>>>>
>>>> is anyone else having trouble with the latest revision(s)? I observed two
>>>> things:
>>>>
>>>> 1) Stream buffering broken. If I have a Process (it may equivalently well
>>>>      be only a Process problem (not a general Stream one) as it is the Process
>>>>      code which was touched recently), I get one line from it and nothing more
>>>>      until the program terminates (or the Process object is released).
>>>>
>>>>      The IDE has the same problem with my programs: If I use Print/Debug/Error
>>>>      in the code, the IDE doesn't see them until the program is closed.
>>>>
>>>> 2) IDE property panel unusable. I can't set values anymore. The errors say
>>>>      "Incorrect property value." for everything. I can't set a Boolean to True
>>>>      anymore, to give an example.
>>>>
>>>> I did a complete
>>>>
>>>> $ make clean && ./reconf-all && ./configure && make -j5 && sudo make install
>>>>
>>>> and the problems remain!
>>>>
>>>> I'd like to know if anyone can reproduce these problems or if something over
>>>> here is _seriously_ broken.
>>>>
>>>> Oh, and I should note that I have also installed an alternate version of
>>>> Gambas in my local $HOME/bin which I can run and it doesn't show the above
>>>> both symptoms. My broken version in use is #5812 and the working alternate
>>>> version is #5801.
>>>>
>>>
>>> FYI, I downgraded to #5802 and the problems are gone. So I guess I'll have
>>> to wait for Benoit as it's likely not my system which gets things wrong but
>>> Gambas.
>>>
>>> Regards,
>>> Tobi
>>>
>>
>> Is it better with revision #5816?
>>
>
> It's not. I spent the afternoon searching for a solution myself. I should
> note that I use Line Input in a Read event of a file or a process (in my
> test project). The symptom is that the Read event does not raise anymore.
>
> Before #5816, both didn't work. With #5816, the process is OK, but not the
> file.
>
> If I am correct, with the recent changes, a stream's read function can (if
> it returns non-zero in case of EOF) disable generation of Read events. This
> happens e.g. when the file is completely read into the buffer. Even if the
> buffer has data left inside, the fd is completely read and the read
> callbacks are disabled.
>
> I have a patch attached which fixes Process and File on my system when used
> with Line Input in a Read event but I don't know if the changes are placed
> properly. It should apply to #5816.
>
> Regards,
> Tobi
>
> PS: I have also to report that my program slows down insanely when they read
>      many data from a process (like when I watch a Gambas compilation). But
>      feel free to return to this issue after your holidays.
>
>

And now, with revision #5817? Do you have a little test project so that 
I can check your problems?

-- 
Benoît Minisini