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William S Fulton 2006-10-29 22:09:16 +00:00
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Version 1.3.30 (in progress)
============================
10/29/2006: wsfulton
[Java] Important fix to prevent early garbage collection of the Java proxy class
while it is being used in a native method. The finalizer could destroy the underlying
C++ object while it was being used. The problem occurs when the proxy class is no
longer strongly reachable after a native call. The problem seems to occur in
memory stress situations on some JVMs. It does not seem to occur on the
Sun client JVM up to jdk 1.5. However the 1.6 client jdk has a more aggressive garbage
collector and so the problem does occur. It does occur on the Sun server
JVMs (certainly 1.4 onwards). The fix entails passing the proxy class into the native
method in addition to the C++ pointer in the long parameter, as Java classes are not
collected when they are passed into JNI methods. The extra parameter can be suppressed
by setting the nopgcpp attribute in the jtype typemap to "1".
See Java.html#java_pgcpp for further details on this topic.
10/24/2006: wsfulton
[C#] Fix smart pointer wrappers. The virtual/override/new keyword is not generated
for each method as the smart pointer class does not mirror the underlying pointer