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Heavily reduced allocation rates

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mcrcortex
2024-12-02 22:55:52 +10:00
parent 5a6819757b
commit 56d96ddd84
1 changed files with 16 additions and 6 deletions
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22
src/main/java/me/cortex/voxy/common/world/SaveLoadSystem.java
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@@ -30,13 +30,22 @@ public class SaveLoadSystem {
return x|(y<<10)|(z<<5); return x|(y<<10)|(z<<5);
} }
private static final ThreadLocal<short[]> SHORT_CACHE = ThreadLocal.withInitial(()->new short[32*32*32]);
private static final ThreadLocal<long[]> LONG_CACHE = ThreadLocal.withInitial(()->new long[32*32*32]);
private static final ThreadLocal<Long2ShortOpenHashMap> OTHER_THING_CACHE = ThreadLocal.withInitial(()-> {
var thing = new Long2ShortOpenHashMap(512);
thing.defaultReturnValue((short) -1);
return thing;
});
//TODO: Cache like long2short and the short and other data to stop allocs //TODO: Cache like long2short and the short and other data to stop allocs
public static MemoryBuffer serialize(WorldSection section) { public static MemoryBuffer serialize(WorldSection section) {
var data = section.copyData(); var data = section.copyData();
var compressed = new short[data.length]; var compressed = SHORT_CACHE.get();
Long2ShortOpenHashMap LUT = new Long2ShortOpenHashMap(data.length); Long2ShortOpenHashMap LUT = OTHER_THING_CACHE.get();LUT.clear();
LUT.defaultReturnValue((short) -1); long[] lutValues = LONG_CACHE.get();//If there are more than this many states in a section... im concerned
long[] lutValues = new long[32*16*16];//If there are more than this many states in a section... im concerned
short lutIndex = 0; short lutIndex = 0;
long pHash = 99; long pHash = 99;
for (int i = 0; i < data.length; i++) { for (int i = 0; i < data.length; i++) {
@@ -93,10 +102,11 @@ public class SaveLoadSystem {
if (lutLen > 32*32*32) { if (lutLen > 32*32*32) {
throw new IllegalStateException("lutLen impossibly large, max size should be 32768 but got size " + lutLen); throw new IllegalStateException("lutLen impossibly large, max size should be 32768 but got size " + lutLen);
} }
long[] lut = new long[lutLen]; //TODO: cache this in a thread local
long[] lut = LONG_CACHE.get();
long hash = 0; long hash = 0;
if (VERIFY_HASH_ON_LOAD) { if (VERIFY_HASH_ON_LOAD) {
hash = key ^ (lut.length * 1293481298141L); hash = key ^ (lutLen * 1293481298141L);
hash ^= metadata; hash *= 1242629872171L; hash ^= metadata; hash *= 1242629872171L;
} }
for (int i = 0; i < lutLen; i++) { for (int i = 0; i < lutLen; i++) {