IDCMP Bug
Sometimes the amigaOS side simply died and was frozen. I was hunting this bug for quite some time now. But with clipboard support, it happened way too often. But I was not able to find any problems in my code. All function returned, but sometimes, amigaOS display was simply locked.
So finally I managed to reproduce the problem, surprisingly without even any clipboard interaction.
The problem seems to be, that AROS sends IDCMP_MENUVERIFY messages not only to the active window, but to *all* windows. I switch off the amigaOS-display-to-aros-display copy, as soon as a MENUVERIFY is received and switch it on, as soon as a MENUPICK is received, I got a locked display, as MENUPICKs are *not* sent to all windows.
I did not discover this problem earlier, because I never tried to select any menu in AROS, when I tested j-uae. For clipboard testing, I did a lot of copy/paste with the help of menus.
As MENUVERIFY messages normally cause no harm and are invisible to the users, this bug is likely to cause no bigger problems. But for j-uae it is very harmful.
Nevertheless, found it. Wrote a quick work-around in j-uae and the problem is gone.
Let's see, if I try to fix it in AROS (or just use the Bugtracker ;)).
Sometimes the amigaOS side simply died and was frozen. I was hunting this bug for quite some time now. But with clipboard support, it happened way too often. But I was not able to find any problems in my code. All function returned, but sometimes, amigaOS display was simply locked.
So finally I managed to reproduce the problem, surprisingly without even any clipboard interaction.
The problem seems to be, that AROS sends IDCMP_MENUVERIFY messages not only to the active window, but to *all* windows. I switch off the amigaOS-display-to-aros-display copy, as soon as a MENUVERIFY is received and switch it on, as soon as a MENUPICK is received, I got a locked display, as MENUPICKs are *not* sent to all windows.
I did not discover this problem earlier, because I never tried to select any menu in AROS, when I tested j-uae. For clipboard testing, I did a lot of copy/paste with the help of menus.
As MENUVERIFY messages normally cause no harm and are invisible to the users, this bug is likely to cause no bigger problems. But for j-uae it is very harmful.
Nevertheless, found it. Wrote a quick work-around in j-uae and the problem is gone.
Let's see, if I try to fix it in AROS (or just use the Bugtracker ;)).
posted by o1i at 2.7.09
3 Comments:
Another important step is nearly done. Great work, o1i! It is always interesting to read the (good) news about janus on your blog. Keep up the great work,
Andreas
I can only agree with Andi, O1i is a genius. Now show me a screenshot of cut and paste in action with e.g. Wordworth.:-) :Drooling:
@Manu:
Cut'n'paste is hard to show on a screenshot and I don't want to take any videos. You can test it yourself at the next release.
Post a Comment
<< Home