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Crash when starting App that instantiates a JavaVM
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Crash when starting App that instantiates a JavaVM



Hi,
A customer has a (non-reproducable) crash of our Cocoa-App which
instantiates a JavaVM when starting up. The app crashes in the main thread
while processing the OpenApp AppleEvent while in another thread the JavaVM
is just being instantiated. For me it looks like the AWTStarter is not
thread-safe in the method [AWTStarter appKitIsRunning:] when the method
[AWTStarter start:swtMode:swtModeForWebStart:] is being executed.

Here is the crashlog (reduced):

OS Version:      Mac OS X 10.5.7 (9J61)

Exception Type:  EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000000
Crashed Thread:  0

Thread 0 Crashed:
0   JavaNativeFoundation              0x17a7d836 JNFLookupClass + 23
1   JavaNativeFoundation              0x17a7d8ea JNFLookupMemberID + 49
2   JavaNativeFoundation              0x17a7f4fa JNFCallStaticBooleanMethod
+ 52
3   libawt.jnilib                     0x1d1e0676 +[AWTStarter
appKitIsRunning:] + 282
...
18  com.apple.HIToolbox               0x9388a961 AEProcessAppleEvent + 38
...
21  com.apple.AppKit                  0x9117f5fb -[NSApplication run] + 795
...
25  com.canto.cumulus                 0x000026f5 start + 41

Thread 6:
0   libSystem.B.dylib                 0x9728746e __semwait_signal + 10
1   libSystem.B.dylib                 0x972b1dcd pthread_cond_wait$UNIX2003
+ 73
2   libawt.jnilib                     0x1d1de42c +[AWTStarter
start:swtMode:swtModeForWebStart:] + 537
3   libawt.jnilib                     0x1d1f7de5 JNI_OnLoad + 625
4   libjava.jnilib                    0x17a8de88
Java_java_lang_ClassLoader_00024NativeLibrary_load + 175
...
42  libjvm.dylib                      0x188d226b JNI_CreateJavaVM_Impl +
3995
...
47  libSystem.B.dylib                 0x972b1155 _pthread_start + 321
48  libSystem.B.dylib                 0x972b1012 thread_start + 34

Thread 0 crashed with X86 Thread State (32-bit):
  eax: 0x1d361b76  ebx: 0x17a7d8d0  ecx: 0xbfffeba8  edx: 0x00000001
  edi: 0x00000000  esi: 0xbfffeba8  ebp: 0xbfffea98  esp: 0xbfffea70
   ss: 0x0000001f  efl: 0x00010282  eip: 0x17a7d836   cs: 0x00000017
   ds: 0x0000001f   es: 0x0000001f   fs: 0x00000000   gs: 0x00000037
  cr2: 0x00000000

Binary Images:
  0x46b000 -   0x471ffd  com.apple.JavaVM 12.2.2 (12.2.2)
<9ad39149cc7ecc91da3e93df7f61d315>
/System/Library/Frameworks/JavaVM.framework/Versions/A/JavaVM

Does anyone know a way to work around this problem?

Thanks
Thomas

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