Free memory JNA

[Aparna Sree]

How do I free memory of a JNA Structure?

		       //populate bigStruct 
			SomeBigStructure bigStruct = SomeImpl.setBigStruct(id);
			
			System.out.println("BigStruct  content before free :"+bigStruct.variable1);
			System.out.println("Before free :"+bigStruct.size());
			
			//clear bigstruct
			bigStruct.clear();
					
			System.out.println("BigStruct  content after free:"+bigStruct.variable1);					
                      System.out.println("After free :"+bigStruct.size());	

I still get the content of the bigStruct and size even after bigStruct.clear();
Is this the proper way to free memory?

[Madhan Sundararajan Devaki]

Please add the following line, after line number 8.

bigStruct = null;

[Aparna Sree]

Thanks Madhan for your reply.

We were actually facing a memory leak issue and I couldnt find out a way to free the JNA memory.

Making it null wasn't a great idea because its just making it available for GC. There is no guarantee that it will be garbage collected.

I went through a few links which said the JNA takes care of freeing memory. You do not have to do it explicitly.

http://markmail.org/message/zdn4ah3kdhiqsr4o#query:jna%20freeing%20memory+page:5+mid:qdgdlevoggyghbgk+state:results
http://markmail.org/message/zdn4ah3kdhiqsr4o

Anyhow the issue was not in JNA code it was in native code and we fixed it too JNA works just fine.