threading on win32
lazarus / 8-Other

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Zorba · 2006-09-20 05:56

The synchronize function seems to cause an exception. This after the
thread has been created and running. This happens on win32 but not on
Linux. Program compiles cleanly for both systems, but just freezes on
windows and runs fine on Linux.

Any known problems?

Lazarus 0.9.16 and FPC 2.0.2
Program compiled for win32 from Linux(cross-copile) and Windows yield
same result.

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beli0135 · 2006-09-20 11:37

Yes, threads are not working properly. Locks linux most of the time,
but works better on Win.
Unstable - the least that can be said

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Zorba · 2006-09-20 13:44

Quote from: "beli0135"Yes, threads are not working properly. Locks
linux most of the time, but works better on Win.
Unstable - the least that can be said

Well this program runs fine on Linux.

It doesn't run on windows (Actually it just freezes) right on
synchronize(@ShowStatus).

Now with very little modification to the program like:
Synchronize(ShowStatus);
Delphi compiles it, and it runs fine, without problem.

Perhaps the new FPC might solve it.

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Vincent Snijders · 2006-09-22 10:54

I can only say, that threading should work and AFAIK it does on
windows (no open bug reports).

If you have a compilable example in which it doesn't work, then you
can submit a bug report.

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Zorba · 2006-09-23 21:30

I do have an app that compiles fine, but to file a bug, I'm not sure
about that untill I get a confirmation, preferably from someone who
knows what they're doing so as not to make a mistake and see if there
is really such a bug.

I just started coding somewhat recently, so you can understand my
hesitation.

Any volenteers?

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Zorba · 2006-09-24 03:17

OK I just rechecked the code and compiled it again cleanly but it
freezes on win32. How do I go about filing a bug?

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Vincent Snijders · 2006-09-24 09:04

There is a link to the bug tracker in the left menu.

For instructions see How do I create a bug report in the wiki.

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Zorba · 2006-09-24 16:24

Filed Thank you.


While on the subject, Memo1 (a TMemo) component on win32 doesn't
Clear.
For example:
Code: [Select]procedure TForm1.FormCreate(Sender: TObject);
begin
Memo1.Clear;
end;

doesn't work.


It works manually to clear it from Object Inspector. Not a big deal
unless it doesn't work later on in program, but couldn't get there
because program freezes before I find out........

This works fine on Linux.

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Onjahyr-BR · 2006-09-24 17:36

Code: [Select]
procedure TForm1.FormCreate(Sender: TObject);
begin
   Memo1.Lines.Clear;
end;

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Zorba · 2006-09-25 00:53

QuoteCode: [Select]procedure TForm1.FormCreate(Sender: TObject);
begin
   Memo1.Lines.Clear;
end;

Will try this but on Linux this works:
Code: [Select]
procedure TForm1.FormCreate(Sender: TObject);
begin
   Memo1.Clear;
end;


But thanks for the tip.

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Vincent Snijders · 2006-09-25 06:16

Please, submit a bug report for the memo clear issue.