August 2015 - core-libs-dev

Chair voting to approve 8041565: JMX ObjectName could be refactored to save memory <EOM>
by Joseph D. Darcy 03 Aug '15

03 Aug '15

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JEP 259: Stack-Walking API
by mark.reinhold＠oracle.com 03 Aug '15

03 Aug '15

New JEP Candidate: http://openjdk.java.net/jeps/259 - Mark

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RFR: JDK-8062849 -- Optimize EnumMap.equals
by Steve Drach 03 Aug '15

03 Aug '15

Please review the following simple fix for the issue reported in https://bugs.openjdk.java.net/browse/JDK-8062849 <https://bugs.openjdk.java.net/browse/JDK-8062849>. ----------------- # HG changeset patch # User sdrach # Date 1437777193 25200 # Fri Jul 24 15:33:13 2015 -0700 # Node ID e57b1569a65ec4dc8c749dedd3345abe5d493054 # Parent 4dd09cb5f7c2a2a23a9958ea7a602dd74d5709b2 8062849: Optimize EnumMap.equals Summary: In the equals method, if the two EnumMaps are a different size return false since they can't be equal. Reviewed-by: brent.christian(a)oracle.com, paul.sandoz(a)oracle.com Contributed-by: steve.drach(a)oracle.com diff --git a/src/java.base/share/classes/java/util/EnumMap.java b/src/java.base/share/classes/java/util/EnumMap.java --- a/src/java.base/share/classes/java/util/EnumMap.java +++ b/src/java.base/share/classes/java/util/EnumMap.java @@ -681,8 +681,11 @@ } private boolean equals(EnumMap<?,?> em) { + if (size != em.size) + return false; + if (em.keyType != keyType) - return size == 0 && em.size == 0; + return size == 0; // Key types match, compare each value for (int i = 0; i < keyUniverse.length; i++) {

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Replacement for sun.misc.Unsafe.allocateInstance(Class<?>) ?
by Jörg Schaible 02 Aug '15

02 Aug '15

Hello guys, there's a lot of talk about making sun.misc.Unsafe unaccessible in JDK 9 ... however, there seems no replacement for the allocateInstance method. XStream is relying heavily on this functionality and without it the library will no longer be able to deserialize a lot of objects from XML. What are the long-term options? Cheers, jörg

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