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8382048: JFR: RecordingFile::write doesn't truncate when overwriting

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Reviewed-by: mgronlun
This commit is contained in:
Erik Gahlin 2026-04-13 13:55:27 +00:00
parent 03b46a308c
commit dd76306903
1 changed files with 5 additions and 1 deletions
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6
src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/RecordingOutput.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2022, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -26,6 +26,7 @@ package jdk.jfr.internal.consumer.filter;
import java.io.Closeable;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
@ -39,6 +40,9 @@ final class RecordingOutput implements Closeable {
private long position;
public RecordingOutput(File file) throws IOException {
// Truncates existing file if it exists
var fos = new FileOutputStream(file);
fos.close();
this.file = new RandomAccessFile(file, "rw");
}