[Warped-devel] Warped errors

[William Voorsluys]

Hello,

I've been running the PHOLD model on Warped 2.0 with many different
configurations. In some situations Warped is reporting some strange
error messages.

When the system is collecting the garbage after having computed the
GVT, the following message appears: "pure virtual method called".
Prior to this message some objects have their garbages successfully
collected, as can be seen in the following messages:

1. OutputManager garbage collecting PHOLD(0,0) for events prior to time 15
2. OutputManager garbage collecting PHOLD(0,1) for events prior to time 15
3. OutputManager garbage collecting PHOLD(0,2) for events prior to time 15
4. OutputManager garbage collecting PHOLD(0,3) for events prior to time 15
5. OutputManager garbage collecting PHOLD(0,4) for events prior to time 15
6. pure virtual method called

But the number of successful collections varies from one execution to another. 

According to gdb, the last portion of code executed is line 73 of
EventFunctors.h (I think):

class sendTimeLessThanEqual : 
  public std::unary_function<const Event *, bool > {
public:
  sendTimeLessThanEqual( const VTime &initCompareTime ) : 
    compareTime( initCompareTime ){}
73:  bool operator()( const Event *a ){
    return a->getSendTime() <= compareTime;
  }
private:
  const VTime &compareTime;
};

I cannot see where a pure virtual function, that has not been
implemented, is being called. Actually, I didn't even understand in
which situations this message may appear.

Other relevant information:
The StateManager is periodic with a period of 0 (values greater than 0
make the program crash during coasting forward).
The Matter GVT Manager is configured with a period of 20.
I'm using two PCs to run the tests.

The gdb stack:

#0  0x003f87a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0x00bc9e59 in raise () from /lib/tls/libc.so.6
#2  0x00bcb882 in abort () from /lib/tls/libc.so.6
#3  0x008f2007 in __cxa_call_unexpected () from /usr/lib/libstdc++.so.5
#4  0x008f2044 in std::terminate () from /usr/lib/libstdc++.so.5
#5  0x008f2568 in __cxa_pure_virtual () from /usr/lib/libstdc++.so.5
#6  0x08088abb in std::find_if<__gnu_cxx::__normal_iterator<Event
const**, std::vector<Event const*, std::allocator<Event const*> > >,
sendTimeLessThanEqual> (__first=
      {<std::iterator<std::random_access_iterator_tag, Event const*,
int, Event const**, Event const*&>> = {<No data fields>}, _M_current =
0x9f62d20}) at EventFunctors.h:73
#7  0x080889f3 in std::remove_if<__gnu_cxx::__normal_iterator<Event
const**, std::vector<Event const*, std::allocator<Event const*> > >,
sendTimeLessThanEqual> () at stl_iterator_base_types.h:160
#8  0x08088716 in OutputEvents::garbageCollect (this=0x9f5d870,
gCollectTime=@0x9f5d850) at stl_vector.h:355
#9  0x080895f1 in OutputManagerImplementationBase::garbageCollect
(this=0x9f5d1c0,
    garbageCollectTime=@0x9f5d850, object=0x9f59dd0) at 
warped/OutputManagerImplementationBase.cpp:67
#10 0x0805b742 in TimeWarpSimulationManager::garbageCollect
(this=0x9f46af8, garbageCollectTime=@0x9f5d850)
    at stl_vector.h:501
#11 0x080598b2 in TimeWarpSimulationManager::executeObjects (this=0x9f46af8)
    at warped/TimeWarpSimulationManager.cpp:394
#12 0x08059a62 in TimeWarpSimulationManager::simulate (this=0x9f46af8,
simulateUntil=@0x9f47cc0)
    at warped/TimeWarpSimulationManager.cpp:417
#13 0x0806e669 in Simulation::simulate (this=0x9f47478,
simulateUntil=@0x9f47cc0) at warped/Simulation.cpp:129
#14 0x080627da in WarpedMain::main (this=0xfee23370, argc=13,
argv=0xfee23434) at warped/WarpedMain.cpp:329
#15 0x08052c5c in main (argc=13, argv=0xfee23434) at phold2/main.cpp:30



I hope the problem description is comprehensive. Any clue would be very useful.

Thanks in advance,

William.