[haiku-bugs] Re: [Haiku] #9854: Debug button doesn't always work
- From: "anevilyak" <trac@xxxxxxxxxxxx>
- Date: Thu, 04 Jul 2013 00:04:07 -0000
#9854: Debug button doesn't always work
-----------------------------+----------------------------
Reporter: anevilyak | Owner: bonefish
Type: bug | Status: assigned
Priority: high | Milestone: R1
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Changes (by anevilyak):
* status: new => assigned
* owner: anevilyak => bonefish
* component: Applications/Debugger => System/Kernel
Comment:
Confirmed that it's the presence of the B_TEAM_DEBUG_POST_SYSCALL flag
that causes the problem, but I'm currently at a loss as to why. Adding
tracing to _user_debug_thread() confirms that it indeeds decides all is
well and calls thread_interrupt() on the thread as it should, but the
expected B_DEBUGGER_MESSAGE_THREAD_DEBUGGED never seems to arrive, and the
thread happily keeps executing as best I can tell. Interrupting a thread
via a breakpoint, however, consistently still behaves as expected.
An example of such an undebuggable thread is one belonging to a BLooper,
which was simply sitting in the kernel waiting for a port read when
attempting to debug it. Any ideas?
--
Ticket URL: <http://dev.haiku-os.org/ticket/9854#comment:1>
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