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Lock-free volume reads

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- Structure volume caches read through concurrent maps and publish only current builds
- Natural terrain receipts reuse a per-thread deflater with the platform gzip framing
- Tests pin receipt and saved biome bytes across reused compressors
This commit is contained in:
Brian Neumann-Fopiano committed 2026-10-22 07:29:53 -04:00
1 parent 0fe2363feb
commit 04f2798c06
4 files changed
+142 -68
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core/src/test/java/art/arcane/iris/world/history/NativeTerrainReceiptTest.java
+9
View File
@@ -60,6 +60,15 @@ public class NativeTerrainReceiptTest {
}
}
@Test
public void repeatedEncodingOnOneThreadKeepsLegacyBytes() throws Exception {
for (int round = 0; round < 6; round++) {
SavedTerrainChunk chunk = chunk(round % 2 == 0);
String epoch = "epoch-" + round;
assertArrayEquals(legacyEncode(chunk, round, epoch), NativeTerrainReceipt.encode(chunk, round, epoch));
}
}
@Test
public void saturatedStringCachesPreserveModifiedUtfBytes() throws Exception {
for (int padding : new int[]{0, 300}) {
core/src/test/java/art/arcane/iris/world/history/SavedBiomeStoreWriteTest.java
+30 -14
View File
@@ -60,6 +60,16 @@ public class SavedBiomeStoreWriteTest {
assertArrayEquals(expectedRegion(), Files.readAllBytes(regionPath(root)));
}
@Test
public void consecutiveRecordsKeepIndependentlyCompressedBytes() throws Exception {
Path root = temporaryFolder.newFolder().toPath();
SavedBiomeStore store = SavedBiomeStore.open(root);
for (int x = 0; x < 4; x++) {
store.claimAndPersist(chunk(x, 3L));
}
assertArrayEquals(expectedRegion(4), Files.readAllBytes(regionPath(root)));
}
@Test
public void relaxedDurabilityPreservesRecordsWithoutForcingEachAppend() throws Exception {
String previousMode = System.getProperty(Durability.MODE_PROPERTY);
@@ -379,6 +389,10 @@ public class SavedBiomeStoreWriteTest {
}
private static byte[] expectedRegion() throws IOException {
return expectedRegion(1);
}
private static byte[] expectedRegion(int records) throws IOException {
ByteArrayOutputStream raw = new ByteArrayOutputStream();
DataOutputStream data = new DataOutputStream(raw);
data.writeLong(3L);
@@ -392,17 +406,6 @@ public class SavedBiomeStoreWriteTest {
data.writeInt(1);
data.write(new byte[]{0, 0, 1, (byte) 0x80, 3, 0});
data.write(new byte[256]);
ByteArrayOutputStream body = new ByteArrayOutputStream();
DataOutputStream coordinates = new DataOutputStream(body);
coordinates.writeInt(0);
coordinates.writeInt(0);
coordinates.writeInt(raw.size());
Deflater deflater = new Deflater(Deflater.BEST_SPEED);
try (DeflaterOutputStream compressed = new DeflaterOutputStream(coordinates, deflater)) {
raw.writeTo(compressed);
} finally {
deflater.end();
}
ByteArrayOutputStream region = new ByteArrayOutputStream();
DataOutputStream output = new DataOutputStream(region);
output.writeInt(0x4942494F);
@@ -410,9 +413,22 @@ public class SavedBiomeStoreWriteTest {
output.writeInt(0);
output.writeInt(0);
output.writeInt(checksum(region.toByteArray()));
output.writeInt(body.size());
output.write(body.toByteArray());
output.writeInt(checksum(body.toByteArray()));
for (int x = 0; x < records; x++) {
ByteArrayOutputStream body = new ByteArrayOutputStream();
DataOutputStream coordinates = new DataOutputStream(body);
coordinates.writeInt(x);
coordinates.writeInt(0);
coordinates.writeInt(raw.size());
Deflater deflater = new Deflater(Deflater.BEST_SPEED);
try (DeflaterOutputStream compressed = new DeflaterOutputStream(coordinates, deflater)) {
raw.writeTo(compressed);
} finally {
deflater.end();
}
output.writeInt(body.size());
output.write(body.toByteArray());
output.writeInt(checksum(body.toByteArray()));
}
return region.toByteArray();
}