I think that this would be a question better asked on
http://answers.ros.orgper the ROS Support Guidelines (
http://ros.org/wiki/Support).

Thanks,

~mc

On Tue, Jul 10, 2012 at 6:19 PM, Liangjun Zhang <liangjun.zhang@gmail.com>wrote:

> I am using ROS::HokuyoNode. When I run the node, it stops at the
> function: NodeHandle::construct() and the program can not continue. I
> trace down and get the following stack for the main thread. The thread
> 1 is stalled at __lll_lock_wait(). Is this a dead lock problem?
>
> I am using ubuntu, fuerte, boost 1.48. Thanks for any hints.
>
>
> Thread [1] 24527 (Suspended : Signal : SIGINT:Interrupt)
>         __lll_lock_wait() at 0x7ffff600e464
>         pthread_cond_signal@@GLIBC_2.3.2() at 0x7ffff600c0b1
>         boost::recursive_mutex::unlock() at recursive_mutex.hpp:147
> 0x4324d5
>         ~unique_lock() at locks.hpp:403 0x4324d5
>         ros::TopicManager::advertise() at 0x7ffff7b167f0
>         ros::ROSOutAppender::ROSOutAppender() at 0x7ffff7b6a471
>         ros::start() at 0x7ffff7b6ea45
>         ros::NodeHandle::construct() at 0x7ffff7b3ca30
>         ros::NodeHandle::NodeHandle() at 0x7ffff7b3f3a5
>         driver_base::main<HokuyoNode>() at driver_node.h:76 0x459453
>         <...more frames...>
>
>
>
> The stacks for all threads are as following:
>
> Thread [4] 24533 (Suspended : Container)
>         pthread_cond_wait@@GLIBC_2.3.2() at 0x7ffff600b85c
>         ros::ROSOutAppender::logThread() at 0x7ffff7b68881
>         thread_proxy() at 0x7ffff6de6b70
>         start_thread() at 0x7ffff60069ca
>         clone() at 0x7ffff5d6370d
>         0x0
> Thread [3] 24532 (Suspended : Container)
>         select() at 0x7ffff5d5bff3
>         XmlRpc::XmlRpcDispatch::work() at 0x7ffff7219b04
>         ros::XMLRPCManager::serverThreadFunc() at 0x7ffff7b06b8d
>         thread_proxy() at 0x7ffff6de6b70
>         start_thread() at 0x7ffff60069ca
>         clone() at 0x7ffff5d6370d
>         0x0
> Thread [2] 24531 (Suspended : Container)
>         __lll_lock_wait() at 0x7ffff600e464
>         _L_lock_1024() at 0x7ffff60095f4
>         pthread_mutex_lock() at 0x7ffff6009457
>         ros::TopicManager::processPublishQueues() at 0x7ffff7b15ddb
>         void boost::last_value<void>::operator() at 0x7ffff7b22229
>         boost::signal0<void, boost::last_value<void>, int, std::less<int>,
> boost::function<void () at 0x7ffff7b22cec
>         ros::PollManager::threadFunc() at 0x7ffff7b20dc6
>         thread_proxy() at 0x7ffff6de6b70
>         start_thread() at 0x7ffff60069ca
>         clone() at 0x7ffff5d6370d
>         <...more frames...>
> Thread [1] 24527 (Suspended : Signal : SIGINT:Interrupt)
>         __lll_lock_wait() at 0x7ffff600e464
>         pthread_cond_signal@@GLIBC_2.3.2() at 0x7ffff600c0b1
>         boost::recursive_mutex::unlock() at recursive_mutex.hpp:147
> 0x4324d5
>         ~unique_lock() at locks.hpp:403 0x4324d5
>         ros::TopicManager::advertise() at 0x7ffff7b167f0
>         ros::ROSOutAppender::ROSOutAppender() at 0x7ffff7b6a471
>         ros::start() at 0x7ffff7b6ea45
>         ros::NodeHandle::construct() at 0x7ffff7b3ca30
>         ros::NodeHandle::NodeHandle() at 0x7ffff7b3f3a5
>         driver_base::main<HokuyoNode>() at driver_node.h:76 0x459453
>         <...more frames...>
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-- 
Michael Carroll
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