btParallelConstraintSolver Unhandled exception, Access viol.

XMight
Posts: 32
Joined: Tue Feb 22, 2011 1:00 pm

btParallelConstraintSolver Unhandled exception, Access viol.

Post by XMight »

Hi,
I try to use the parallel dispatcher and the parallel solver. Bullet version 2.76.
The application runs OK with the simulation turned OFF. If I turn the simulation ON, then it runs for 2 seconds, and an exception is thrown in btParallelConstraintSolver.cpp, line 423:

Code: Select all

float restitution = 0.5f * (solverBodyA.restitution + solverBodyB.restitution);
solverBodyA, viewed with Visual C++ 2008 contains <BadPtr> and Expression cannot be evaluated bla bla bla.
solverBodyB.restitution = 0.000 and the object is correct.

softBodyA is the alias for the object at position 65534 in offsetSolverBodies[iA], body B is at position 0;
The number of "good" pointers in offsetSolverBodies is 650 for my case, if I check above, then from 651 the is cannot evaluate expression, badptr etc.

Also, the call stack is:


> MyApp.exe!CustomSetupContactConstraintsTask(PfxSortData16 * contactPairs=0x04d77180, unsigned int numContactPairs=1, TrbState * offsetRigStates=0x04d77930, PfxSolverBody * offsetSolverBodies=0x04d777e0, unsigned int numRigidBodies=2, float separateBias=0.10000000, float timeStep=0.016666668) Line 423 + 0x6 bytes C++
MyApp.exe!SolverThreadFunc(void * userPtr=0x023fff18, void * lsMemory=0x00000000) Line 524 + 0x3f bytes C++
MyApp.exe!Thread_no_1(void * lpParam=0x023ffa90) Line 65 + 0x15 bytes C++
kernel32.dll!7c80b729()

Some suggestions?

P.S. I used the MultithreadedDemo as an example how to initialize these.
xristos
Posts: 11
Joined: Wed Jun 22, 2011 3:15 pm

Re: btParallelConstraintSolver Unhandled exception, Access v

Post by xristos »

Hi XMight,

Did you ever figure out why this crash was happening?

I just posted a similar crash here...

http://bulletphysics.org/Bullet/phpBB3/ ... f=9&t=7016