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https://github.com/PaperMC/Paper.git
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36f34f01c0
Upstream has released updates that appears to apply and compile correctly. This update has not been tested by PaperMC and as with ANY update, please do your own testing Bukkit Changes: da9ef3c5 #496: Add methods to get/set ItemStacks in EquipmentSlots 3abebc9f #492: Let Tameable extend Animals rather than Entity 941111a0 #495: Expose ItemStack and hand used in PlayerShearEntityEvent 4fe19cae #494: InventoryView - Add missing Brewing FUEL_TIME CraftBukkit Changes:933e9094#664: Add methods to get/set ItemStacks in EquipmentSlots18722312#662: Expose ItemStack and hand used in PlayerShearEntityEvent
85 lines
3.6 KiB
Diff
85 lines
3.6 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 4 May 2020 00:38:13 -0400
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Subject: [PATCH] Cleanup Region Files Direct Memory on close
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Mojang was semi leaking native memory here by relying on finalizers
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to clean up the direct memory.
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Finalizers have no guarantee on when they will be ran, and since this is
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old generation memory, it might be a while before its called.
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diff --git a/src/main/java/net/minecraft/server/RegionFile.java b/src/main/java/net/minecraft/server/RegionFile.java
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index df728e2c0a2bf660a91e0bd6342c4b4b1471dcb7..20927d55c6700f66f0931bfe3d20fd8959c87989 100644
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--- a/src/main/java/net/minecraft/server/RegionFile.java
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+++ b/src/main/java/net/minecraft/server/RegionFile.java
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@@ -30,7 +30,7 @@ public class RegionFile implements AutoCloseable {
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private final FileChannel dataFile;
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private final java.nio.file.Path d;
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private final RegionFileCompression e;
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- private final ByteBuffer f;
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+ private final ByteBuffer f; private ByteBuffer getFileBuffer() { return f; } // Paper - clean up direct buffers on close
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private final IntBuffer g;
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private final IntBuffer h;
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private final RegionFileBitSet freeSectors;
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@@ -403,10 +403,59 @@ public class RegionFile implements AutoCloseable {
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}
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} finally { // Paper start - Prevent regionfiles from being closed during use
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this.fileLock.unlock();
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+ if (getFileBuffer().isDirect()) cleanDirectByteBuffer(getFileBuffer()); // Paper - clean up direct buffers on close
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}
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} // Paper end
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}
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+ // Paper start
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+ private static int getVersion() {
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+ String version = System.getProperty("java.version");
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+ if(version.startsWith("1.")) {
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+ version = version.substring(2, 3);
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+ } else {
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+ int dot = version.indexOf(".");
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+ if(dot != -1) { version = version.substring(0, dot); }
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+ } return Integer.parseInt(version);
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+ }
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+ static java.lang.reflect.Method unsafeClean;
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+ static sun.misc.Unsafe unsafe = com.destroystokyo.paper.utils.UnsafeUtils.getUnsafe();
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+ static java.util.function.Consumer<ByteBuffer> cleaner;
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+ static {
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+ try {
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+ if (unsafe != null) {
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+ unsafeClean = unsafe.getClass().getMethod("invokeCleaner", ByteBuffer.class);
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+ if (unsafeClean != null) {
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+ cleaner = (buf) -> {
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+ try {
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+ unsafeClean.invoke(unsafe, buf);
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+ } catch (Exception ex) {
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+ com.destroystokyo.paper.util.SneakyThrow.sneaky(ex);
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+ }
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+ };
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+ LOGGER.info("[RegionFile] Using Java 9+ invokeCleaner DirectByteBuffer cleanup method");
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+ }
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+ }
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+ } catch (java.lang.NoSuchMethodException e) {}
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+ if (cleaner == null && getVersion() <= 8) {
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+ cleaner = (buf) -> {
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+ ((sun.nio.ch.DirectBuffer) buf).cleaner().clean();
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+ };
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+ LOGGER.info("[RegionFile] Using Java 8 DirectByteBuffer cleanup method");
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+ }
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+ }
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+ public static void cleanDirectByteBuffer(ByteBuffer toBeDestroyed) {
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+ try {
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+ if (cleaner != null) {
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+ cleaner.accept(toBeDestroyed);
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+ }
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+ } catch (Exception ex) {
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+ LOGGER.warn("Failed automatically cleaning DirectByteBuffer");
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+ ex.printStackTrace();
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+ cleaner = null;
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+ }
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+ }
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+ // Paper end
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private void c() throws IOException {
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int i = (int) this.dataFile.size();
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