[haiku-bugs] Re: [Haiku] #5987: menu thread lockup when using cursor key on empty folder
- From: "stippi" <trac@xxxxxxxxxxxx>
- Date: Fri, 14 May 2010 16:23:58 -0000
#5987: menu thread lockup when using cursor key on empty folder
--------------------------------+-------------------------------------------
Reporter: Ziusudra | Owner: stippi
Type: bug | Status: in-progress
Priority: normal | Milestone: R1
Component: Kits/Interface Kit | Version: R1/alpha2
Keywords: | Blockedby:
Platform: All | Blocking:
--------------------------------+-------------------------------------------
Changes (by stippi):
* owner: axeld => stippi
* status: new => in-progress
Comment:
It just so happens that I came across a method in the Menu tracking code
that I thought was curious and should deadlock in certain situations. And
indeed there is a ticket within the next day... :-)
{{{
(gdb) bt
#0 0x002fc0c7 in BMenu::_NextItem () from /boot/system/lib/libbe.so
#1 0x002fd4d7 in BMenu::_SelectNextItem () from /boot/system/lib/libbe.so
#2 0x002feb8c in BMenu::KeyDown () from /boot/system/lib/libbe.so
#3 0x00365984 in BWindow::DispatchMessage () from
/boot/system/lib/libbe.so
#4 0x00309343 in BPrivate::BMenuWindow::DispatchMessage () from
/boot/system/lib/libbe.so
#5 0x00361de9 in BWindow::task_looper () from /boot/system/lib/libbe.so
#6 0x002ade0e in BLooper::_task0_ () from /boot/system/lib/libbe.so
#7 0x005eee6c in thread_entry () from /boot/system/lib/libroot.so
#8 0x78594fec in ?? ()
}}}
When the method has no other item to go to, it will loop forever.
--
Ticket URL: <http://dev.haiku-os.org/ticket/5987#comment:1>
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