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Mojang was semi leaking native memory here by relying on finalizers to clean up the direct memory. Finalizers have no guarantee on when they will be ran, and since this is old generation memory, it might be a while before its called.
33 lines
No EOL
1.5 KiB
Diff
33 lines
No EOL
1.5 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 df728e2c0a..c565307a58 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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@@ -0,0 +0,0 @@ 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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@@ -0,0 +0,0 @@ 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() instanceof sun.nio.ch.DirectBuffer) ((sun.nio.ch.DirectBuffer) getFileBuffer()).cleaner().clean(); // 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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