[Odejava] joint.delete()

darkprophet · February 21, 2005, 12:39pm

Hi,
Is joint.delete() working for anybody? I can’t seem to get it to work…

I add the joint to a JointGroup, and when i want to delete that joint, it just doesn’t do it. No errors, no crashes, its as if that method is empty.

I have looked at the odejava code, and i traced it back to OdeJNI.dJointDestroy(long); and as you probably know, thats a native problem.

I tried to go to CVS and find out the problem in the natives, but it seems that the sources isn’t there, instead a note regarding that you obtain the ode.dll from the ODE CVS now instead…

I am using the latest Odejava release.

Thanks, DP

ewills · February 21, 2005, 2:35pm

If a Joint is part of a JointGroup, then you must destroy it using JointGroup.delete(). Otherwise, Joint.delete works.

darkprophet · February 21, 2005, 2:59pm

right ok…then there seems to be some problem with odejava.

The first couple of frames are ok and the physics works fine (if not part of a jointGroup), then i get a native crash in odejava.dll


An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : EXCEPTION_ACCESS_VIOLATION (0xc0000005) occurred at PC=0xBCAE6F1
Function=[Unknown.]
Library=C:\eclipse\workspace\Physics\lib\odejava.dll

NOTE: We are unable to locate the function name symbol for the error
      just occurred. Please refer to release documentation for possible
      reason and solutions.


Current Java thread:
      at org.odejava.collision.JavaCollision.spaceCollide(Native Method)
      at org.odejava.collision.JavaCollision.collide(JavaCollision.java:150)
      at com.jmex.physics.PhysicsWorld.update(PhysicsWorld.java:578)
      at jmextest.physics.joints.TestHingeJoint2.simpleUpdate(TestHingeJoint2.java:71)
      at com.jme.app.SimpleGame.update(Unknown Source)
      at com.jme.app.BaseGame.start(Unknown Source)
      at jmextest.physics.joints.TestHingeJoint2.main(TestHingeJoint2.java:330)

Dynamic libraries:
0x00400000 - 0x00407000       C:\j2sdk1.4.2_04\bin\javaw.exe
0x7C900000 - 0x7C9B0000       C:\WINDOWS\system32\ntdll.dll
0x7C800000 - 0x7C8F4000       C:\WINDOWS\system32\kernel32.dll
0x77DD0000 - 0x77E6B000       C:\WINDOWS\system32\ADVAPI32.dll
0x77E70000 - 0x77F01000       C:\WINDOWS\system32\RPCRT4.dll
0x77D40000 - 0x77DD0000       C:\WINDOWS\system32\USER32.dll
0x77F10000 - 0x77F56000       C:\WINDOWS\system32\GDI32.dll
0x77C10000 - 0x77C68000       C:\WINDOWS\system32\MSVCRT.dll
0x629C0000 - 0x629C9000       C:\WINDOWS\system32\LPK.DLL
0x74D90000 - 0x74DFB000       C:\WINDOWS\system32\USP10.dll
0x08000000 - 0x08138000       C:\j2sdk1.4.2_04\jre\bin\client\jvm.dll
0x76B40000 - 0x76B6D000       C:\WINDOWS\system32\WINMM.dll
0x5CD70000 - 0x5CD77000       C:\WINDOWS\system32\serwvdrv.dll
0x5B0A0000 - 0x5B0A7000       C:\WINDOWS\system32\umdmxfrm.dll
0x10000000 - 0x10007000       C:\j2sdk1.4.2_04\jre\bin\hpi.dll
0x00940000 - 0x0094E000       C:\j2sdk1.4.2_04\jre\bin\verify.dll
0x00950000 - 0x00969000       C:\j2sdk1.4.2_04\jre\bin\java.dll
0x00970000 - 0x0097D000       C:\j2sdk1.4.2_04\jre\bin\zip.dll
0x00A40000 - 0x00A4F000       C:\j2sdk1.4.2_04\jre\bin\net.dll
0x71AB0000 - 0x71AC7000       C:\WINDOWS\system32\WS2_32.dll
0x71AA0000 - 0x71AA8000       C:\WINDOWS\system32\WS2HELP.dll
0x04EF0000 - 0x04EF8000       C:\j2sdk1.4.2_04\jre\bin\nio.dll
0x04F00000 - 0x0500F000       C:\j2sdk1.4.2_04\jre\bin\awt.dll
0x73000000 - 0x73026000       C:\WINDOWS\system32\WINSPOOL.DRV
0x76390000 - 0x763AD000       C:\WINDOWS\system32\IMM32.dll
0x774E0000 - 0x7761D000       C:\WINDOWS\system32\ole32.dll
0x5AD70000 - 0x5ADA8000       C:\WINDOWS\system32\uxtheme.dll
0x05070000 - 0x050C0000       C:\j2sdk1.4.2_04\jre\bin\fontmanager.dll
0x73760000 - 0x737A9000       C:\WINDOWS\system32\ddraw.dll
0x73BC0000 - 0x73BC6000       C:\WINDOWS\system32\DCIMAN32.dll
0x73940000 - 0x73A10000       C:\WINDOWS\system32\D3DIM700.DLL
0x07CD0000 - 0x07D25000       C:\eclipse\workspace\Physics\lib\lwjgl.dll
0x72280000 - 0x722AA000       C:\WINDOWS\system32\DINPUT.dll
0x5ED00000 - 0x5EDCC000       C:\WINDOWS\system32\OPENGL32.dll
0x68B20000 - 0x68B40000       C:\WINDOWS\system32\GLU32.dll
0x77C00000 - 0x77C08000       C:\WINDOWS\system32\VERSION.dll
0x08140000 - 0x0853F000       C:\WINDOWS\Resources\themes\Luna\Luna.msstyles
0x69000000 - 0x6966E000       C:\WINDOWS\system32\atioglxx.dll
0x688F0000 - 0x688F9000       C:\WINDOWS\system32\HID.DLL
0x77920000 - 0x77A13000       C:\WINDOWS\system32\SETUPAPI.DLL
0x76C30000 - 0x76C5E000       C:\WINDOWS\system32\WINTRUST.dll
0x77A80000 - 0x77B14000       C:\WINDOWS\system32\CRYPT32.dll
0x77B20000 - 0x77B32000       C:\WINDOWS\system32\MSASN1.dll
0x76C90000 - 0x76CB8000       C:\WINDOWS\system32\IMAGEHLP.dll
0x0BC40000 - 0x0BCC9000       C:\eclipse\workspace\Physics\lib\odejava.dll
0x07FD0000 - 0x07FEE000       C:\j2sdk1.4.2_04\jre\bin\jpeg.dll
0x0C9E0000 - 0x0CA03000       C:\j2sdk1.4.2_04\jre\bin\cmm.dll
0x59A60000 - 0x59B01000       C:\WINDOWS\system32\DBGHELP.dll
0x76BF0000 - 0x76BFB000       C:\WINDOWS\system32\PSAPI.DLL

Heap at VM Abort:
Heap
 def new generation   total 896K, used 523K [0x10010000, 0x10100000, 0x109e0000)
  eden space 832K,  62% used [0x10010000, 0x10092cc8, 0x100e0000)
  from space 64K,   0% used [0x100e0000, 0x100e0078, 0x100f0000)
  to   space 64K,   0% used [0x100f0000, 0x100f0000, 0x10100000)
 tenured generation   total 11084K, used 7687K [0x109e0000, 0x114b3000, 0x18010000)
   the space 11084K,  69% used [0x109e0000, 0x11161ec0, 0x11162000, 0x114b3000)
 compacting perm gen  total 7680K, used 7474K [0x18010000, 0x18790000, 0x1c010000)
   the space 7680K,  97% used [0x18010000, 0x1875cb78, 0x1875cc00, 0x18790000)

Local Time = Mon Feb 21 17:44:14 2005
Elapsed Time = 7
#
# The exception above was detected in native code outside the VM
#
# Java VM: Java HotSpot(TM) Client VM (1.4.2_04-b05 mixed mode)
#
# An error report file has been saved as hs_err_pid2364.log.
# Please refer to the file for further information.
#

But adding the JointHinge2 to a group solves this problem…

(oh yeah, delete still doesn’t work, even without the group)

DP

darkprophet · February 21, 2005, 4:39pm

aha! If you enable feedback on that joint, it will cause that crash.

Its still a bug and i think it should be delt with, because I would like to implement breakable joints! and breakable joints need both, feedback and deletion…

DP

harryk · February 22, 2005, 6:03am

I second that. Haven’t got my breakable joints to work because of joint.delete() native crashes.

divzero · March 2, 2005, 6:49am

any idea why it’s crashing?

The code is pretty simple:


    public void delete() {
        Ode.dJointDestroy(jointId);
        deleted = true;
    }

And I think the jointId’s work for everything else.

darkprophet, are you using the debug API, I assume you are, but I hate error messages like that one:


 NOTE: We are unable to locate the function name symbol for the error
 just occurred. Please refer to release documentation for possible
 reason and solutions.

On mac, when using the debug API I do actually get a nice C stacktrace in the error log. This was amazingly helpful when I was porting Odejava to OS X.

Will.