Sorry, I forgot to mention that in all my current test cases I'm calling the method cleanSystem(false), so I'm never calling vtkGlobalJavaHash.DeleteAll();. In fact you can see in the stack trace the following line<div>
<br></div><div><span class="Apple-style-span" style="border-collapse: collapse; font-family: arial, sans-serif; font-size: 13px; ">vtk.vtkGlobalJavaHash.GC()I+73</span></div><div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;"><br>
</span></font></div><div><font class="Apple-style-span" face="arial, sans-serif"><span class="Apple-style-span" style="border-collapse: collapse;">so I'm definitely not calling DeleteAll(). For threads, I was under the impression that vtkGlobalJavaHash.GC() should always be called from the EDT if I have any objects that are used for rendering (which I have a bunch of). I spent a lot of time making this program work in a multithreaded environment. I separated all calls to any rendering objects and do them in the EDT. VTK calls to non-rendering objects I do in other threads sometimes. Are you saying that if a VTK object is created in a given thread, it must also be disposed of in that same thread? I definitely use one thread to create vtkObjects and then other threads access them in a thread safe manner. I thought this was OK.<br>
</span></font><br><div class="gmail_quote">On Tue, Mar 29, 2011 at 11:41 AM, Sebastien Jourdain <span dir="ltr"><<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Do you call that method ? This will remove all the VTK object that<br>
have been created through Java regardless if you are still using them<br>
or not.<br>
<br>
> vtkGlobalJavaHash.DeleteAll();<br>
<br>
Have you got an idea in which thread you are using the VTK objects ?<br>
If not, you do have a problem. VTK is not thread safe therefore you<br>
should make sure (like swing) that any VTK code get executed in the<br>
EDT. (creation, setting, update...)<br>
<br>
Seb<br>
<br>
PS: On the other hand, if you know what you are doing, you can use VTK<br>
in a multi-threaded environment with sometime some synchronization<br>
with the EDT.<br>
<div><div></div><div class="h5"><br>
On Tue, Mar 29, 2011 at 2:26 PM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>> wrote:<br>
> OK, I'm still getting a lot of JNI errors when I run the vtkGarbageCollector<br>
> that look like the following. Do you have any idea what's going on here?<br>
> Here is the code that it is being called from<br>
> private static class MyVTKClean implements Runnable {<br>
> private boolean runVTKDelete;<br>
> private int numDelete;<br>
> public MyVTKClean(boolean runVTKDelete) {<br>
> this.runVTKDelete = runVTKDelete;<br>
> }<br>
> public synchronized void run() {<br>
> if (runVTKDelete)<br>
> numDelete = vtkGlobalJavaHash.DeleteAll();<br>
> else<br>
> numDelete = vtkGlobalJavaHash.GC();<br>
> }<br>
> public int getNumDelete() {<br>
> return numDelete;<br>
> }<br>
> }<br>
><br>
> // I think the VTK clean up has to run<br>
> // on the EDT, so we'll do that here<br>
> public synchronized static void cleanSystem(boolean runVTKDelete) {<br>
> System.gc();<br>
> System.runFinalization();<br>
> MyVTKClean run = new MyVTKClean(runVTKDelete);<br>
> // I'm not sure what to do here, it crashes sometimes<br>
> // I honestly think we're going to have to go through the program<br>
> // and just manually manage all our own memory.<br>
> SwingUtilities.invokeLater(run);<br>
> }<br>
> Here is a reproduction of the JNI VTK error.<br>
> #<br>
> # A fatal error has been detected by the Java Runtime Environment:<br>
> #<br>
> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000020001ba29400,<br>
> pid=5420, tid=5264<br>
> #<br>
> # JRE version: 6.0_24-b07<br>
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (19.1-b02 mixed mode<br>
> windows-amd64 compressed oops)<br>
> # Problematic frame:<br>
> # C 0x000020001ba29400<br>
> #<br>
> # If you would like to submit a bug report, please visit:<br>
> # <a href="http://java.sun.com/webapps/bugreport/crash.jsp" target="_blank">http://java.sun.com/webapps/bugreport/crash.jsp</a><br>
> # The crash happened outside the Java Virtual Machine in native code.<br>
> # See problematic frame for where to report the bug.<br>
> #<br>
> --------------- T H R E A D ---------------<br>
> Current thread (0x0000000007e4c000): JavaThread "AWT-EventQueue-0"<br>
> [_thread_in_native, id=5264, stack(0x0000000008ee0000,0x0000000008fe0000)]<br>
> siginfo: ExceptionCode=0xc0000005, ExceptionInformation=0x0000000000000008<br>
> 0x000020001ba29400<br>
> Registers:<br>
> RAX=0x000007fee9a7ffff, RBX=0x0000000007caf0c8, RCX=0x0000000007c00d90,<br>
> RDX=0x0000000008fde720<br>
> RSP=0x0000000008fde608, RBP=0x0000000007caf0d8, RSI=0x000000005976e7a0,<br>
> RDI=0x0000000007cafff0<br>
> R8=0x0000000000000000, R9=0x0000000000000009, R10=0x0000000006ba18b0,<br>
> R11=0x0000000007cafff0<br>
> R12=0x0000000007caf0d8, R13=0x0000000008fde720, R14=0x0000000007bdd2d0,<br>
> R15=0x0000000000000002<br>
> RIP=0x000020001ba29400, EFLAGS=0x0000000000010246<br>
> Register to memory mapping:<br>
> RAX=0x000007fee9a7ffff<br>
> 0x000007fee9a7ffff is pointing to unknown location<br>
> RBX=0x0000000007caf0c8<br>
> 0x0000000007caf0c8 is pointing to unknown location<br>
> RCX=0x0000000007c00d90<br>
> 0x0000000007c00d90 is pointing to unknown location<br>
> RDX=0x0000000008fde720<br>
> 0x0000000008fde720 is pointing into the stack for thread: 0x0000000007e4c000<br>
> "AWT-EventQueue-0" prio=6 tid=0x0000000007e4c000 nid=0x1490 runnable<br>
> [0x0000000008fde000]<br>
> java.lang.Thread.State: RUNNABLE<br>
> RSP=0x0000000008fde608<br>
> 0x0000000008fde608 is pointing into the stack for thread: 0x0000000007e4c000<br>
> "AWT-EventQueue-0" prio=6 tid=0x0000000007e4c000 nid=0x1490 runnable<br>
> [0x0000000008fde000]<br>
> java.lang.Thread.State: RUNNABLE<br>
> RBP=0x0000000007caf0d8<br>
> 0x0000000007caf0d8 is pointing to unknown location<br>
> RSI=0x000000005976e7a0<br>
> 0x000000005976e7a0 is pointing to unknown location<br>
> RDI=0x0000000007cafff0<br>
> 0x0000000007cafff0 is pointing to unknown location<br>
> R8 =0x0000000000000000<br>
> 0x0000000000000000 is pointing to unknown location<br>
> R9 =0x0000000000000009<br>
> 0x0000000000000009 is pointing to unknown location<br>
> R10=0x0000000006ba18b0<br>
> 0x0000000006ba18b0 is pointing to unknown location<br>
> R11=0x0000000007cafff0<br>
> 0x0000000007cafff0 is pointing to unknown location<br>
> R12=0x0000000007caf0d8<br>
> 0x0000000007caf0d8 is pointing to unknown location<br>
> R13=0x0000000008fde720<br>
> 0x0000000008fde720 is pointing into the stack for thread: 0x0000000007e4c000<br>
> "AWT-EventQueue-0" prio=6 tid=0x0000000007e4c000 nid=0x1490 runnable<br>
> [0x0000000008fde000]<br>
> java.lang.Thread.State: RUNNABLE<br>
> R14=0x0000000007bdd2d0<br>
> 0x0000000007bdd2d0 is pointing to unknown location<br>
> R15=0x0000000000000002<br>
> 0x0000000000000002 is pointing to unknown location<br>
><br>
> Top of Stack: (sp=0x0000000008fde608)<br>
> 0x0000000008fde608: 000007fee995d99b 0000000007caf0c0<br>
> 0x0000000008fde618: 0000000007caf0c0 000000005976e7a0<br>
> 0x0000000008fde628: 0000000000000000 000000005976e7a0<br>
> 0x0000000008fde638: 0000000007caf0b0 000000005976e7a0<br>
> 0x0000000008fde648: 0000000007caf0b0 0000000000000000<br>
> 0x0000000008fde658: 0000000008fde720 00000000bb8bd928<br>
> 0x0000000008fde668: 0000000000000000 0000000000000000<br>
> 0x0000000008fde678: 000007fee9960ab3 0000000008fde720<br>
> 0x0000000008fde688: 0000000007cafff0 0000000000000000<br>
> 0x0000000008fde698: 0000000000000000 0000000007e4c000<br>
> 0x0000000008fde6a8: 0000000008fde950 00000000bb8bd928<br>
> 0x0000000008fde6b8: 0000000000000000 0000000058511290<br>
> 0x0000000008fde6c8: 000007fee9960e6f 0000000058511290<br>
> 0x0000000008fde6d8: 0000000008fde928 00000000bca11e68<br>
> 0x0000000008fde6e8: 0000000002407f03 00000000c0c06c78<br>
> 0x0000000008fde6f8: 0000000008fde700 000000006df196a0<br>
> Instructions: (pc=0x000020001ba29400)<br>
> 0x000020001ba293f0:<br>
> [error occurred during error reporting (printing registers, top of stack,<br>
> instructions near pc), id 0xc0000005]<br>
> Stack: [0x0000000008ee0000,0x0000000008fe0000], sp=0x0000000008fde608,<br>
> free space=1017k<br>
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native<br>
> code)<br>
> C 0x000020001ba29400<br>
> Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)<br>
> j vtk.vtkObjectBase.VTKDeleteReference(J)V+0<br>
> j vtk.vtkGlobalJavaHash.GC()I+73<br>
> j prefs.ENV$MyVTKClean.run()V+18<br>
> j java.awt.event.InvocationEvent.dispatch()V+47<br>
> j<br>
> java.awt.EventQueue.dispatchEventImpl(Ljava/awt/AWTEvent;Ljava/lang/Object;)V+21<br>
> j<br>
> java.awt.EventQueue.access$000(Ljava/awt/EventQueue;Ljava/awt/AWTEvent;Ljava/lang/Object;)V+3<br>
> j java.awt.EventQueue$1.run()Ljava/lang/Void;+12<br>
> j java.awt.EventQueue$1.run()Ljava/lang/Object;+1<br>
> v ~StubRoutines::call_stub<br>
> j<br>
> java.security.AccessController.doPrivileged(Ljava/security/PrivilegedAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0<br>
> j<br>
> java.security.AccessControlContext$1.doIntersectionPrivilege(Ljava/security/PrivilegedAction;Ljava/security/AccessControlContext;Ljava/security/AccessControlContext;)Ljava/lang/Object;+28<br>
> j java.awt.EventQueue.dispatchEvent(Ljava/awt/AWTEvent;)V+46<br>
> j java.awt.EventDispatchThread.pumpOneEventForFilters(I)Z+204<br>
> j<br>
> java.awt.EventDispatchThread.pumpEventsForFilter(ILjava/awt/Conditional;Ljava/awt/EventFilter;)V+30<br>
> j<br>
> java.awt.EventDispatchThread.pumpEventsForHierarchy(ILjava/awt/Conditional;Ljava/awt/Component;)V+11<br>
> j java.awt.EventDispatchThread.pumpEvents(ILjava/awt/Conditional;)V+4<br>
> j java.awt.EventDispatchThread.pumpEvents(Ljava/awt/Conditional;)V+3<br>
> j java.awt.EventDispatchThread.run()V+9<br>
> v ~StubRoutines::call_stub<br>
> --------------- P R O C E S S ---------------<br>
> Java Threads: ( => current thread )<br>
> 0x0000000009609800 JavaThread "Timer-4" [_thread_in_native, id=5844,<br>
> stack(0x0000000051110000,0x0000000051210000)]<br>
> 0x000000000960c800 JavaThread "SwingWorker-pool-4-thread-1" daemon<br>
> [_thread_blocked, id=6424, stack(0x0000000053a00000,0x0000000053b00000)]<br>
> 0x000000000960b000 JavaThread "pool-1-thread-1" [_thread_blocked, id=3136,<br>
> stack(0x000000000bd50000,0x000000000be50000)]<br>
> 0x0000000009608800 JavaThread "DestroyJavaVM" [_thread_blocked, id=5108,<br>
> stack(0x00000000022e0000,0x00000000023e0000)]<br>
> 0x0000000009608000 JavaThread "TimerQueue" daemon [_thread_blocked,<br>
> id=6340, stack(0x000000000a8f0000,0x000000000a9f0000)]<br>
> 0x0000000007f2c000 JavaThread "Timer-2" [_thread_blocked, id=6600,<br>
> stack(0x00000000090e0000,0x00000000091e0000)]<br>
> 0x0000000007f2b000 JavaThread "Timer-1" [_thread_blocked, id=3288,<br>
> stack(0x0000000008c40000,0x0000000008d40000)]<br>
> 0x00000000061b0000 JavaThread "ssh-connection 1" daemon [_thread_blocked,<br>
> id=6048, stack(0x00000000086f0000,0x00000000087f0000)]<br>
> 0x00000000080d0000 JavaThread "Transport protocol 1" daemon<br>
> [_thread_in_native, id=4200, stack(0x000000000a730000,0x000000000a830000)]<br>
> 0x0000000007e4c800 JavaThread "Timer-0" [_thread_blocked, id=2128,<br>
> stack(0x0000000008fe0000,0x00000000090e0000)]<br>
> =>0x0000000007e4c000 JavaThread "AWT-EventQueue-0" [_thread_in_native,<br>
> id=5264, stack(0x0000000008ee0000,0x0000000008fe0000)]<br>
> 0x000000000625f800 JavaThread "AWT-Windows" daemon [_thread_in_native,<br>
> id=6700, stack(0x00000000085f0000,0x00000000086f0000)]<br>
> 0x000000000625e800 JavaThread "AWT-Shutdown" [_thread_blocked, id=2500,<br>
> stack(0x00000000084f0000,0x00000000085f0000)]<br>
> 0x000000000611b000 JavaThread "Java2D Disposer" daemon [_thread_blocked,<br>
> id=4280, stack(0x00000000083f0000,0x00000000084f0000)]<br>
> 0x00000000060c7800 JavaThread "Low Memory Detector" daemon<br>
> [_thread_blocked, id=4272, stack(0x0000000006980000,0x0000000006a80000)]<br>
> 0x00000000060c7000 JavaThread "CompilerThread1" daemon [_thread_blocked,<br>
> id=2744, stack(0x0000000006880000,0x0000000006980000)]<br>
> 0x00000000060c3000 JavaThread "CompilerThread0" daemon [_thread_blocked,<br>
> id=5308, stack(0x0000000006780000,0x0000000006880000)]<br>
> 0x00000000060ae800 JavaThread "JDWP Command Reader" daemon<br>
> [_thread_in_native, id=5568, stack(0x0000000006680000,0x0000000006780000)]<br>
> 0x00000000060ab000 JavaThread "JDWP Event Helper Thread" daemon<br>
> [_thread_blocked, id=6736, stack(0x0000000006580000,0x0000000006680000)]<br>
> 0x00000000060a5000 JavaThread "JDWP Transport Listener: dt_shmem" daemon<br>
> [_thread_blocked, id=1744, stack(0x0000000006480000,0x0000000006580000)]<br>
> 0x00000000003e6800 JavaThread "Attach Listener" daemon [_thread_blocked,<br>
> id=6416, stack(0x0000000006360000,0x0000000006460000)]<br>
> 0x00000000060a0800 JavaThread "Signal Dispatcher" daemon [_thread_blocked,<br>
> id=6608, stack(0x0000000006260000,0x0000000006360000)]<br>
> 0x00000000003cd800 JavaThread "Finalizer" daemon [_thread_blocked,<br>
> id=5328, stack(0x0000000005f60000,0x0000000006060000)]<br>
> 0x00000000003ca000 JavaThread "Reference Handler" daemon [_thread_blocked,<br>
> id=6568, stack(0x0000000005e60000,0x0000000005f60000)]<br>
> Other Threads:<br>
> 0x00000000003c3800 VMThread [stack: 0x0000000005d60000,0x0000000005e60000]<br>
> [id=6624]<br>
> 0x00000000060cd800 WatcherThread [stack:<br>
> 0x0000000006a80000,0x0000000006b80000] [id=968]<br>
> VM state:not at safepoint (normal execution)<br>
> VM Mutex/Monitor currently owned by a thread: None<br>
> Heap<br>
> PSYoungGen total 18944K, used 491K [0x00000000ead60000,<br>
> 0x00000000ec280000, 0x0000000100000000)<br>
> eden space 16256K, 3% used<br>
> [0x00000000ead60000,0x00000000eaddae10,0x00000000ebd40000)<br>
> from space 2688K, 0% used<br>
> [0x00000000ebfe0000,0x00000000ebfe0000,0x00000000ec280000)<br>
> to space 2688K, 0% used<br>
> [0x00000000ebd40000,0x00000000ebd40000,0x00000000ebfe0000)<br>
> PSOldGen total 43392K, used 10564K [0x00000000c0800000,<br>
> 0x00000000c3260000, 0x00000000ead60000)<br>
> object space 43392K, 24% used<br>
> [0x00000000c0800000,0x00000000c1251378,0x00000000c3260000)<br>
> PSPermGen total 23616K, used 23499K [0x00000000bb600000,<br>
> 0x00000000bcd10000, 0x00000000c0800000)<br>
> object space 23616K, 99% used<br>
> [0x00000000bb600000,0x00000000bccf2d70,0x00000000bcd10000)<br>
> Dynamic libraries:<br>
> 0x0000000000400000 - 0x000000000042e000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\java.exe<br>
> 0x00000000775d0000 - 0x0000000077779000 C:\Windows\SYSTEM32\ntdll.dll<br>
> 0x00000000773b0000 - 0x00000000774cf000 C:\Windows\system32\kernel32.dll<br>
> 0x000007fefcac0000 - 0x000007fefcb2b000 C:\Windows\system32\KERNELBASE.dll<br>
> 0x000007fefe6b0000 - 0x000007fefe78b000 C:\Windows\system32\ADVAPI32.dll<br>
> 0x000007fefce70000 - 0x000007fefcf0f000 C:\Windows\system32\msvcrt.dll<br>
> 0x000007fefece0000 - 0x000007fefecff000 C:\Windows\SYSTEM32\sechost.dll<br>
> 0x000007fefe090000 - 0x000007fefe1bd000 C:\Windows\system32\RPCRT4.dll<br>
> 0x000000006d890000 - 0x000000006df94000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\server\jvm.dll<br>
> 0x00000000774d0000 - 0x00000000775ca000 C:\Windows\system32\USER32.dll<br>
> 0x000007fefd290000 - 0x000007fefd2f7000 C:\Windows\system32\GDI32.dll<br>
> 0x000007fefd280000 - 0x000007fefd28e000 C:\Windows\system32\LPK.dll<br>
> 0x000007fefed00000 - 0x000007fefedc9000 C:\Windows\system32\USP10.dll<br>
> 0x000007fef9d90000 - 0x000007fef9dcb000 C:\Windows\system32\WINMM.dll<br>
> 0x000007fefe790000 - 0x000007fefe7be000 C:\Windows\system32\IMM32.DLL<br>
> 0x000007fefe390000 - 0x000007fefe499000 C:\Windows\system32\MSCTF.dll<br>
> 0x000000006d800000 - 0x000000006d80e000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\verify.dll<br>
> 0x000000006d450000 - 0x000000006d477000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\java.dll<br>
> 0x000000006d3b0000 - 0x000000006d3ba000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\hpi.dll<br>
> 0x00000000777a0000 - 0x00000000777a7000 C:\Windows\system32\PSAPI.DLL<br>
> 0x000000006d4c0000 - 0x000000006d4f4000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\jdwp.dll<br>
> 0x000000006d6d0000 - 0x000000006d6d8000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\npt.dll<br>
> 0x000000006d850000 - 0x000000006d862000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\zip.dll<br>
> 0x000000006d300000 - 0x000000006d30a000 C:\Program<br>
> Files\Java\jdk1.6.0_24\jre\bin\dt_shmem.dll<br>
> 0x000007fef1360000 - 0x000007fef13cb000<br>
> C:\Users\...\dist\64\vtkCommonJava.dll<br>
> 0x000007fee9900000 - 0x000007fee9b6f000 C:\Users\...\dist\64\vtkCommon.dll<br>
> 0x000007fef4bf0000 - 0x000007fef4c32000 C:\Users\...\dist\64\vtksys.dll<br>
> 0x000007fefd1d0000 - 0x000007fefd21d000 C:\Windows\system32\WS2_32.dll<br>
> 0x000007fefcde0000 - 0x000007fefcde8000 C:\Windows\system32\NSI.dll<br>
> 0x0000000072850000 - 0x00000000728ed000<br>
> C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCR90.dll<br>
> 0x0000000074590000 - 0x0000000074663000<br>
> C:\Windows\WinSxS\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.4940_none_08e4299fa83d7e3c\MSVCP90.dll<br>
> 0x000007fef0410000 - 0x000007fef0419000 C:\Windows\system32\WSOCK32.dll<br>
> 0x000007feedb20000 - 0x000007feedbbc000<br>
> C:\Users\...\dist\64\vtkFilteringJava.dll<br>
> 0x000007fee95e0000 - 0x000007fee98f2000<br>
> C:\Users\...\dist\64\vtkFiltering.dll<br>
> 0x000007fef9f90000 - 0x000007fef9f9f000<br>
> C:\Users\...\dist\64\vtkGenericFilteringJava.dll<br>
> 0x000007fef1320000 - 0x000007fef1356000<br>
> C:\Users\...\dist\64\vtkGenericFiltering.dll<br>
> 0x000007fee8fe0000 - 0x000007fee95d6000 C:\Users\...\dist\64\vtkGraphics.dll<br>
> 0x000007fef0a60000 - 0x000007fef0a91000 C:\Users\...\dist\64\vtkverdict.dll<br>
> 0x000007feef720000 - 0x000007feef7b2000<br>
> C:\Users\...\dist\64\vtkGraphicsJava.dll<br>
> 0x000007fef1290000 - 0x000007fef12df000<br>
> C:\Users\...\dist\64\vtkHybridJava.dll<br>
> 0x000007fee8d30000 - 0x000007fee8fd1000 C:\Users\...\dist\64\vtkHybrid.dll<br>
> 0x000007fee88d0000 - 0x000007fee8d22000<br>
> C:\Users\...\dist\64\vtkRendering.dll<br>
> 0x000007fefe4a0000 - 0x000007fefe6a3000 C:\Windows\system32\ole32.dll<br>
> 0x000007fefe7c0000 - 0x000007fefe897000 C:\Windows\system32\OLEAUT32.dll<br>
> 0x000007fee8600000 - 0x000007fee88ce000 C:\Users\...\dist\64\vtkImaging.dll<br>
> 0x000007fee8150000 - 0x000007fee85f9000 C:\Users\...\dist\64\vtkIO.dll<br>
> 0x000007fef4bc0000 - 0x000007fef4be3000<br>
> C:\Users\...\dist\64\vtkDICOMParser.dll<br>
> 0x000007feed060000 - 0x000007feed110000 C:\Users\...\dist\64\vtkNetCDF.dll<br>
> 0x000007fef9f70000 - 0x000007fef9f8d000<br>
> C:\Users\...\dist\64\vtkNetCDF_cxx.dll<br>
> 0x000007feed560000 - 0x000007feed5f3000 C:\Users\...\dist\64\vtkmetaio.dll<br>
> 0x000007fef0a40000 - 0x000007fef0a55000 C:\Users\...\dist\64\vtkzlib.dll<br>
> 0x000007fef0a10000 - 0x000007fef0a33000 C:\Users\...\dist\64\vtkpng.dll<br>
> 0x000007feef6b0000 - 0x000007feef6d7000 C:\Users\...\dist\64\vtkjpeg.dll<br>
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> 0x000007fefc2e0000 - 0x000007fefc2f7000 C:\Windows\system32\CRYPTSP.dll<br>
> 0x000007fefbfa0000 - 0x000007fefbfe7000 C:\Windows\system32\rsaenh.dll<br>
> 0x000007fefbd50000 - 0x000007fefbd6e000 C:\Windows\system32\USERENV.dll<br>
> 0x000007fefca10000 - 0x000007fefca1f000 C:\Windows\system32\profapi.dll<br>
> 0x000007fefa4e0000 - 0x000007fefa4f5000 C:\Windows\system32\NLAapi.dll<br>
> 0x000007fef89e0000 - 0x000007fef89f5000 C:\Windows\system32\napinsp.dll<br>
> 0x000007fef89c0000 - 0x000007fef89d9000 C:\Windows\system32\pnrpnsp.dll<br>
> 0x000007fef89b0000 - 0x000007fef89c0000 C:\Windows\system32\wshbth.dll<br>
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> 0x000007fefbc40000 - 0x000007fefbc47000 C:\Windows\System32\wshtcpip.dll<br>
> 0x000007fef9f30000 - 0x000007fef9f57000 C:\Windows\system32\IPHLPAPI.DLL<br>
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> 0x000007fefcd80000 - 0x000007fefcdba000 C:\Windows\system32\WINTRUST.dll<br>
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> VM Arguments:<br>
> jvm_args: -Xdebug -Xrunjdwp:transport=dt_shmem,address=javadebug<br>
> -Dfile.encoding=UTF-8 -Dsun.java2d.ddoffscreen=false<br>
> -Dsun.java2d.gdiblit=false<br>
> java_command: Application yes no<br>
> Launcher Type: SUN_STANDARD<br>
> Environment Variables:<br>
> JAVA_HOME=C:\Program Files\Java\jdk1.6.0_18<br>
> PATH=C:\Program Files (x86)\MiKTeX<br>
> 2.8\miktex\bin;C:\Ruby19\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\strawberry\c\bin;C:\strawberry\perl\bin;c:\Program<br>
> Files (x86)\Microsoft SQL Server\90\Tools\binn\;C:\Program Files\MySQL\MySQL<br>
> Server<br>
> 5.1\bin;C:\Users\jmorra\Downloads\dcm4che\dcm4che-2.0.21\bin;C:\Users\...\dist\64;C:\Program<br>
> Files (x86)\Calibre2\;C:\Program Files (x86)\SSH Communications Security\SSH<br>
> Secure Shell<br>
> USERNAME=jmorra<br>
> OS=Windows_NT<br>
> PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 23 Stepping 10, GenuineIntel<br>
><br>
><br>
> --------------- S Y S T E M ---------------<br>
> OS: Windows 7 Build 7601 Service Pack 1<br>
> CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 23 stepping<br>
> 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1<br>
> Memory: 4k page, physical 4158344k(884196k free), swap 8314844k(3659748k<br>
> free)<br>
> vm_info: Java HotSpot(TM) 64-Bit Server VM (19.1-b02) for windows-amd64 JRE<br>
> (1.6.0_24-b07), built on Feb 2 2011 16:25:45 by "java_re" with MS VC++ 8.0<br>
> (VS2005)<br>
> time: Tue Mar 29 11:21:13 2011<br>
> elapsed time: 50 seconds<br>
><br>
> On Tue, Mar 29, 2011 at 8:27 AM, Sebastien Jourdain<br>
> <<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>> wrote:<br>
>><br>
>> As I said, since a double[] is not a vtkObject, your are good to go<br>
>> with image.GetSpacing(), and there is no arm in that.<br>
>> It is not that it make java difficult to use, it will induce more<br>
>> lines. But don't make me wrong this problem occurs ONLY when you bind<br>
>> two vtkObject together whithout any Java instance holding the<br>
>> reference in between.<br>
>><br>
>> BAD => a.SetX(b.GetY());<br>
>><br>
>> But you can do<br>
>><br>
>> z = a.GetX().GetY().GetZ();<br>
>> b.SetZ(z);<br>
>><br>
>> or that too<br>
>><br>
>> b.SetZ(z = a.GetX().GetY().GetZ());<br>
>><br>
>> Seb<br>
>><br>
>> On Tue, Mar 29, 2011 at 11:10 AM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>><br>
>> wrote:<br>
>> > Thanks for your help. For number 3, image.GetSpacing() is a VTK call,<br>
>> > however it returns a java double[], so I thought that it was OK. All<br>
>> > these<br>
>> > memory restrictions in Java make it very difficult to use, is there any<br>
>> > plans to improve the usage of VTK in Java?<br>
>> > Thanks again!<br>
>> ><br>
>> > On Tue, Mar 29, 2011 at 5:26 AM, Sebastien Jourdain<br>
>> > <<a href="mailto:sebastien.jourdain@kitware.com">sebastien.jourdain@kitware.com</a>> wrote:<br>
>> >><br>
>> >> Hi Jonathan,<br>
>> >><br>
>> >> I directly reply on the context of your mail,<br>
>> >><br>
>> >><br>
>> >> On Tue, Mar 29, 2011 at 2:33 AM, Jonathan Morra <<a href="mailto:jonmorra@gmail.com">jonmorra@gmail.com</a>><br>
>> >> wrote:<br>
>> >> > Since I'm using vtkJavaGarbageCollector I'm already using<br>
>> >> > vtkGlobalJavaHash.GC();. The main questions that I currently still<br>
>> >> > need<br>
>> >> > answered are here<br>
>> >> > 1. should I have to call System.gc(); and System.runFinalization();<br>
>> >> > frequently with VTK+Java? It appears the memory is managed better<br>
>> >> > when<br>
>> >> > calling these lines every time vtkGlobalJavaHash.GC() is called, but<br>
>> >> > I<br>
>> >> > don't<br>
>> >> > know if this is necessary.<br>
>> >><br>
>> >> System.gc(); is the only one that you should really care about. But<br>
>> >> Java does not offer any guarantee if this method will do something or<br>
>> >> not. Moreover, the GC will stop all the thread to do its job. So it<br>
>> >> is basically up to you.<br>
>> >><br>
>> >> > 2. Is it ok to reuse Java variables? Such as<br>
>> >> > vtkImageData image = filter.GetOuput();<br>
>> >> > // Do Stuff<br>
>> >> > image = filter2.GetOuput();<br>
>> >><br>
>> >> yes<br>
>> >><br>
>> >> > 3. Is it OK to move around java objects without an intermediate<br>
>> >> > reference?<br>
>> >> > Such as<br>
>> >> > image1.SetOutputSpacing(image2.GetSpacing());<br>
>> >><br>
>> >> what do you mean by Java object ? for me as the Set/Get do have a<br>
>> >> capital letter, I would say they come from the VTK world and if they<br>
>> >> return a vtkObject, you should use an intermediate variable otherwise<br>
>> >> if it's an array of primary type, that is just fine.<br>
>> >><br>
>> >> > Sorry, forgot one more. Should I be calling vtkGlobalJavaHash.GC()<br>
>> >> > from<br>
>> >> > the event dispatch thread?<br>
>> >> > I saw that as an option in vtkJavaGarbageCollector, and I'm not sure<br>
>> >> > why<br>
>> >> > that's the case.<br>
>> >><br>
>> >> This totally depend on your VTK code, if you insure that all the call<br>
>> >> you are doing on the VTK layer is done through the EDT, then you<br>
>> >> should, otherwise you shouldn't. (This is a requirement if the data is<br>
>> >> shown in a renderer.)<br>
>> >><br>
>> >> Seb<br>
>> ><br>
>> ><br>
><br>
><br>
</div></div></blockquote></div><br></div>