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ASSEMBLY_EXCEPTION
author tonyp
Sat, 16 Oct 2010 17:12:19 -0400
changeset 6983 a8c50cedbce9
parent 0 fd16c54261b3
child 41274 e31e26d0f9bf
permissions -rw-r--r--
6991377: G1: race between concurrent refinement and humongous object allocation Summary: There is a race between the concurrent refinement threads and the humongous object allocation that can cause the concurrent refinement threads to corrupt the part of the BOT that it is being initialized by the humongous object allocation operation. The solution is to do the humongous object allocation in careful steps to ensure that the concurrent refinement threads always have a consistent view over the BOT, region contents, and top. The fix includes some very minor tidying up in sparsePRT. Reviewed-by: jcoomes, johnc, ysr


OPENJDK ASSEMBLY EXCEPTION

The OpenJDK source code made available by Sun at openjdk.java.net and
openjdk.dev.java.net ("OpenJDK Code") is distributed under the terms of the
GNU General Public License <http://www.gnu.org/copyleft/gpl.html> version 2
only ("GPL2"), with the following clarification and special exception.

    Linking this OpenJDK Code statically or dynamically with other code
    is making a combined work based on this library.  Thus, the terms
    and conditions of GPL2 cover the whole combination.

    As a special exception, Sun gives you permission to link this
    OpenJDK Code with certain code licensed by Sun as indicated at
    http://openjdk.java.net/legal/exception-modules-2007-05-08.html
    ("Designated Exception Modules") to produce an executable,
    regardless of the license terms of the Designated Exception Modules,
    and to copy and distribute the resulting executable under GPL2,
    provided that the Designated Exception Modules continue to be
    governed by the licenses under which they were offered by Sun.

As such, it allows licensees and sublicensees of Sun's GPL2 OpenJDK Code to
build an executable that includes those portions of necessary code that Sun
could not provide under GPL2 (or that Sun has provided under GPL2 with the
Classpath exception).  If you modify or add to the OpenJDK code, that new
GPL2 code may still be combined with Designated Exception Modules if the
new code is made subject to this exception by its copyright holder.
jdk-sandbox