ActiveMQ-CPP 3.9.0 A program is blocking waiting for a lock:
#0 0x000000367980b5bc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0 #1 0x00007fcab6c6c006 in (anonymous namespace)::doMonitorEnter ( monitor=0x26f63b0, thread=0x2605960) at decaf/internal/util/concurrent/Threading.cpp:662 #2 0x00007fcab6cf345b in decaf::util::concurrent::Lock::lock ( this=0x7fffe1a00890) at decaf/util/concurrent/Lock.cpp:54 #3 0x00007fcab6cf3575 in decaf::util::concurrent::Lock::Lock ( this=<value optimized out>, object=<value optimized out>, intiallyLocked=<value optimized out>) at decaf/util/concurrent/Lock.cpp:32 #4 0x00007fcab69f2293 in activemq::core::FifoMessageDispatchChannel::stop ( this=0x26c2c50) at activemq/core/FifoMessageDispatchChannel.cpp:123 How can I find out what is holding onto this lock?