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From: Noah Heusser <>
To: <>
Subject: Add a Field to java.lang.Object
Date: Wed, 08 Jun 2011 17:20:00 -0000	[thread overview]
Message-ID: <> (raw)


I'm trying to add an new extra field into java.lang.Object. I need that
to do some memory synchronization via Network.

If I just insert the new Field in libjava/java/lang/Object.h (access
form the Java World is not needed) I get a segmentation fault whenever I
try to run a Java Software using that Object.h. (It does no matter
whether I add it to _JvObjectPrefix or java::lang::Object)

If the JV_HASH_SYNCHRONIZATION Preprocessor Variable is not defined an
extra Filed sync_info gets inserted in Object.h.
But everywhere where extra Code is inserted depending on
JV_HASH_SYNCHRONIZATION it seems to deal with whether or not the Garbage
Collector needs to scan the Object.

If I add the Field in libjava/java/lang/ I get a compile
Error when I compile gcj:
../../../../gcc-src/libjava/java/lang/ internal
compiler error: Segmentation fault

What extra change is needed after adding a Filed to Object?

Thanks for your Help

             reply	other threads:[~2011-06-08 17:20 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-08 17:20 Noah Heusser [this message]
2011-06-08 18:31 ` Andrew Haley
2011-06-10  9:39   ` Noah Heusser

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