Mercurial > hg > truffle
annotate ASSEMBLY_EXCEPTION @ 3917:eca1193ca245
4965777: GC changes to support use of discovered field for pending references
Summary: If and when the reference handler thread is able to use the discovered field to link reference objects in its pending list, so will GC. In that case, GC will scan through this field once a reference object has been placed on the pending list, but not scan that field before that stage, as the field is used by the concurrent GC thread to link discovered objects. When ReferenceHandleR thread does not use the discovered field for the purpose of linking the elements in the pending list, as would be the case in older JDKs, the JVM will fall back to the old behaviour of using the next field for that purpose.
Reviewed-by: jcoomes, mchung, stefank
author | ysr |
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date | Wed, 07 Sep 2011 13:55:42 -0700 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 |
2 OPENJDK ASSEMBLY EXCEPTION | |
3 | |
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4 The OpenJDK source code made available by Oracle at openjdk.java.net and |
0 | 5 openjdk.dev.java.net ("OpenJDK Code") is distributed under the terms of the |
6 GNU General Public License <http://www.gnu.org/copyleft/gpl.html> version 2 | |
7 only ("GPL2"), with the following clarification and special exception. | |
8 | |
9 Linking this OpenJDK Code statically or dynamically with other code | |
10 is making a combined work based on this library. Thus, the terms | |
11 and conditions of GPL2 cover the whole combination. | |
12 | |
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13 As a special exception, Oracle gives you permission to link this |
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14 OpenJDK Code with certain code licensed by Oracle as indicated at |
0 | 15 http://openjdk.java.net/legal/exception-modules-2007-05-08.html |
16 ("Designated Exception Modules") to produce an executable, | |
17 regardless of the license terms of the Designated Exception Modules, | |
18 and to copy and distribute the resulting executable under GPL2, | |
19 provided that the Designated Exception Modules continue to be | |
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20 governed by the licenses under which they were offered by Oracle. |
0 | 21 |
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22 As such, it allows licensees and sublicensees of Oracle's GPL2 OpenJDK Code to |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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23 build an executable that includes those portions of necessary code that Oracle |
c18cbe5936b8
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24 could not provide under GPL2 (or that Oracle has provided under GPL2 with the |
0 | 25 Classpath exception). If you modify or add to the OpenJDK code, that new |
26 GPL2 code may still be combined with Designated Exception Modules if the | |
27 new code is made subject to this exception by its copyright holder. |