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8141678: sun.invoke.util.Wrapper eagerly initializes all integral type caches

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Reviewed-by: vlivanov, psandoz, shade, plevart
This commit is contained in:
Claes Redestad 2015-11-09 17:15:07 +01:00
parent 8e73a2915d
commit ff90534bb5
1 changed files with 11 additions and 10 deletions
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21
jdk/src/java.base/share/classes/sun/invoke/util/Wrapper.java
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@ -27,18 +27,19 @@ package sun.invoke.util;
public enum Wrapper {
// wrapperType primitiveType char zero emptyArray format
BOOLEAN( Boolean.class, boolean.class, 'Z', (Boolean)false, new boolean[0], Format.unsigned( 1)),
BOOLEAN( Boolean.class, boolean.class, 'Z', Boolean.FALSE, new boolean[0], Format.unsigned( 1)),
// These must be in the order defined for widening primitive conversions in JLS 5.1.2
BYTE ( Byte.class, byte.class, 'B', (Byte)(byte)0, new byte[0], Format.signed( 8)),
SHORT ( Short.class, short.class, 'S', (Short)(short)0, new short[0], Format.signed( 16)),
CHAR (Character.class, char.class, 'C', (Character)(char)0, new char[0], Format.unsigned(16)),
INT ( Integer.class, int.class, 'I', (Integer)/*(int)*/0, new int[0], Format.signed( 32)),
LONG ( Long.class, long.class, 'J', (Long)(long)0, new long[0], Format.signed( 64)),
FLOAT ( Float.class, float.class, 'F', (Float)(float)0, new float[0], Format.floating(32)),
DOUBLE ( Double.class, double.class, 'D', (Double)(double)0, new double[0], Format.floating(64)),
OBJECT ( Object.class, Object.class, 'L', null, new Object[0], Format.other( 1)),
// Avoid boxing integral types here to defer initialization of internal caches
BYTE ( Byte.class, byte.class, 'B', new Byte((byte)0), new byte[0], Format.signed( 8)),
SHORT ( Short.class, short.class, 'S', new Short((short)0), new short[0], Format.signed( 16)),
CHAR (Character.class, char.class, 'C', new Character((char)0), new char[0], Format.unsigned(16)),
INT ( Integer.class, int.class, 'I', new Integer(0), new int[0], Format.signed( 32)),
LONG ( Long.class, long.class, 'J', new Long(0), new long[0], Format.signed( 64)),
FLOAT ( Float.class, float.class, 'F', (Float)(float)0, new float[0], Format.floating(32)),
DOUBLE ( Double.class, double.class, 'D', (Double)(double)0, new double[0], Format.floating(64)),
OBJECT ( Object.class, Object.class, 'L', null, new Object[0], Format.other( 1)),
// VOID must be the last type, since it is "assignable" from any other type:
VOID ( Void.class, void.class, 'V', null, null, Format.other( 0)),
VOID ( Void.class, void.class, 'V', null, null, Format.other( 0)),
;
private final Class<?> wrapperType;