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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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18
src/java.base/share/classes/java/lang/Character.java
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@ -31,6 +31,7 @@ import java.util.HashMap;
import java.util.Locale;
import jdk.internal.HotSpotIntrinsicCandidate;
import jdk.internal.misc.VM;
/**
* The {@code Character} class wraps a value of the primitive
@ -7914,11 +7915,22 @@ class Character implements java.io.Serializable, Comparable<Character> {
private static class CharacterCache {
private CharacterCache(){}
static final Character cache[] = new Character[127 + 1];
static final Character[] cache;
static Character[] archivedCache;
static {
for (int i = 0; i < cache.length; i++)
cache[i] = new Character((char)i);
int size = 127 + 1;
// Load and use the archived cache if it exists
VM.initializeFromArchive(CharacterCache.class);
if (archivedCache == null || archivedCache.length != size) {
Character[] c = new Character[size];
for (int i = 0; i < size; i++) {
c[i] = new Character((char) i);
}
archivedCache = c;
}
cache = archivedCache;
}
}