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8213033: Archive remaining primitive box caches

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Reviewed-by: jiangli, alanb
This commit is contained in:
Claes Redestad 2018-11-20 21:12:46 +01:00
parent 4a235517f9
commit 4b45441ae9
9 changed files with 117 additions and 50 deletions
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21
src/java.base/share/classes/java/lang/Short.java
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@ -26,6 +26,7 @@
package java.lang;
import jdk.internal.HotSpotIntrinsicCandidate;
import jdk.internal.misc.VM;
/**
* The {@code Short} class wraps a value of primitive type {@code
@ -203,13 +204,25 @@ public final class Short extends Number implements Comparable<Short> {
}
private static class ShortCache {
private ShortCache(){}
private ShortCache() {}
static final Short cache[] = new Short[-(-128) + 127 + 1];
static final Short[] cache;
static Short[] archivedCache;
static {
for(int i = 0; i < cache.length; i++)
cache[i] = new Short((short)(i - 128));
int size = -(-128) + 127 + 1;
// Load and use the archived cache if it exists
VM.initializeFromArchive(ShortCache.class);
if (archivedCache == null || archivedCache.length != size) {
Short[] c = new Short[size];
short value = -128;
for(int i = 0; i < size; i++) {
c[i] = new Short(value++);
}
archivedCache = c;
}
cache = archivedCache;
}
}