Re: Performance Notes - Locking

Getting back to this issue, I'd love to hear someone's explanation around
this line in jawin-2.0-alpha1/docs/perfdata/Performance1.html :

"Locking. Some parts of the marshalling code use critical sections and
kernel objects which might be contested especially in a server environment."

In particular, what parts of the marshalling code are we talking about here?
I'll be happy to try to fix it if only I knew where to start looking.

Thanks.

Regards,

-- Christophe

-----Original Message-----
From: Christophe Warland (FRSGlobal) [mailto:[email protected]]
Sent: Thursday, May 12, 2005 2:11 PM
To: [email protected]
Subject: Performance Notes - Locking

I believe that I am actually suffering from a locking problem in the
marshalling layer. I hooked up JAWIN in a client-server environment, with a
custom pool of thread so as to avoid the apartment 'nightmare', and once in
every few hundreds calls I get stuck in a locking situation.

The docs on Performance Notes on Java/Win32 integration warned that it could
happen. And I am now wondering if there is a technical solution or hack to
the problem. Do any of you have a suggestion for this? Thanks.

Regards,

-- Christophe Warland

PS: for those interested, here is a stacktrace from one on my Worker
threads. As you can see it is stuck in a native method of the GenericStub:

"Thread-33" daemon prio=5 tid=0x0098f258 nid=0x80 runnable
[3c2f000..3c2fd8c]
  at org.jawin.marshal.GenericStub.dispatchInvoke0(Native Method)
  at org.jawin.marshal.GenericStub.dispatchInvoke(GenericStub.java:201)
  at org.jawin.DispatchPtr.invokeN(DispatchPtr.java:587)
  at org.jawin.DispatchPtr.invokeN(DispatchPtr.java:555)
  at org.jawin.DispatchPtr.invoke(DispatchPtr.java:510)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at com.s1.frs.rand.frsweb.broker.Worker.run(Worker.java:54)