Deadlock when destroying agents in example SingleAgentModule

[Stardom]

In the opencog example examples/modules/SingleAgentModule.cc, the destructor calls cogserver.destroyAllAgents().

However, destroyAllAgents was previously called and that function called the agents destructor, both destroyAllAgents attempt to acquire agentsLock. The lock is not recursive so a deadlock results. Here is the backtrace. To replicate this, type the following into the opencog server prompt

loadmodule libsingleagent.so
agents-stop opencog::SingleAgentModule

#0 ~SingleAgentModule (this=0x82d8468, __in_chrg=<value optimized out>) at /home/seth/.rep/misty/SingleAgentModule.cc:65
#1 0xb7f40244 in opencog::safe_deleter<opencog::Agent>::operator() (this=0xbffff40c, __ptr=@0x82d7ce8) at /home/seth/.rep/ochack/opencog/util/misc.h:75
#2 0xb7f3c858 in std::for_each<__gnu_cxx::__normal_iterator<opencog::Agent**, std::vector<opencog::Agent*, std::allocator<opencog::Agent*> > >, opencog::safe_deleter<opencog::Agent> > (__first=..., __last=..., __f=...) at /usr/include/c++/4.4/bits/stl_algo.h:4200
#3 0xb7f37685 in opencog::CogServer::destroyAllAgents (this=0x8072268, id=...) at /home/seth/.rep/ochack/opencog/server/CogServer.cc:314
#4 0xb6048a25 in opencog::BuiltinRequestsModule::do_stopAgents (this=0x8282eb8, dummy=0x82b73e0, args=...) at /home/seth/.rep/ochack/opencog/server/BuiltinRequestsModule.cc:154
#5 0xb604bfc4 in opencog::BuiltinRequestsModule::do_stopAgentsRequest::execute (this=0x82b73e0) at /home/seth/.rep/ochack/opencog/server/BuiltinRequestsModule.h:72
#6 0xb7f36f58 in opencog::CogServer::processRequests (this=0x8072268) at /home/seth/.rep/ochack/opencog/server/CogServer.cc:195
#7 0xb7f36ebe in opencog::CogServer::runLoopStep (this=0x8072268) at /home/seth/.rep/ochack/opencog/server/CogServer.cc:169
#8 0xb7f36dfc in opencog::CogServer::serverLoop (this=0x8072268) at /home/seth/.rep/ochack/opencog/server/CogServer.cc:152
#9 0x0805d71e in main (argc=3, argv=0xbffff944) at /home/seth/.rep/ochack/opencog/server/CogServerMain.cc:193

[Stardom (seth-tewebs)]

solution, make agentsLock lock recursive?