On 6/8/06, Vincenzo Mallozzi <vinjunior@xxxxxxxx> wrote:
Is there a deterministic way to know if a process is in deadlock have state TASK_INTERRUPTIBLE or TASK_UNINTERRUPTIBLE? I really need this information to know if some threads are in such a situation. How can I resolve this problem? Is there another solution?
It's a little weird question. can you please elaborate more on the problem ? what's going on ? why do you need this ? if you think you have deadlocks, why not just try to solve them ? anyway, you might be interested to examine a recent kernel patch posted by Ingo Molnar, which is called "the kernel lock validator". it essentially hunts down possible deadlocks in the kernel. read on in http://lwn.net/Articles/185666/ Ohad.
Thanks. Vincenzo On Wednesday 07 June 2006 15:16, William J Beksi wrote: > Vincenzo Mallozzi wrote: > > >Hi, > >what is the task state of some processes/threads that are in a deadlock > >situation? I've heard about TASK_UNINTERRUPTIBLE. Is not it? > > > > > In a deadlock situation both tasks are waiting for a resource that is > held by another task, therefore none of the other tasks waiting for that > resource can proceed. In TASK_INTERRUPTIBLE/TASK_UNINTERRUPTIBLE the > task is in a sleeping state with the exception that TASK_UNINTERRUPTIBLE > cannot be woken up by a signal. So it seems a deadlock can occur with a > task in an interruptible or uniterruptible state. > > William > ___________________________________ Yahoo! Messenger with Voice: chiama da PC a telefono a tariffe esclusive http://it.messenger.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
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