GlueGen JavaCallback: Only produce default 'Key' class if keys are used, expose 'Key' to public and use it. Expose release*() and get*Keys() methods

Further we use a dedicated lock Object used in the Java implementation.

TODO: Native static callback dispatch code shall
- (also) acquire the lock
- handle case where the data has been released already
to render this solution thread-safe and data-race free

1 files changed, 2 insertions, 0 deletions

diff --git a/src/java/com/jogamp/gluegen/JavaConfiguration.java b/src/java/com/jogamp/gluegen/JavaConfiguration.java
index 1fe2747..3e2e680 100644
--- a/src/java/com/jogamp/gluegen/JavaConfiguration.java
+++ b/src/java/com/jogamp/gluegen/JavaConfiguration.java
@@ -2293,6 +2293,7 @@ public class JavaConfiguration {
       boolean setFuncProcessed;
       int setFuncCBParamIdx;
       int setFuncUserParamIdx;
+      boolean keyClassEmitted;
 
       public JavaCallbackInfo(final String cbFuncTypeName, final String cbSimpleClazzName, final String cbFQClazzName, final String cbMethodSignature,
                               final FunctionType cbFuncType, final MethodBinding cbFuncBinding, final int cbFuncUserParamIdx,
@@ -2326,6 +2327,7 @@ public class JavaConfiguration {
           this.setFuncProcessed = false;
           this.setFuncCBParamIdx = -1;
           this.setFuncUserParamIdx = -1;
+          this.keyClassEmitted = false;
       }
 
       public void setFuncProcessed(final int cbParamIdx, final int userParamIdx) {