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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/micro/org/openjdk/bench/java/nio/StringCharBufferBulkTransfer.java Normal file
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/*
* Copyright (c) 2025, 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.java.nio;
import java.nio.CharBuffer;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
/**
* Benchmark for bulk get methods of a {@code CharBuffer} created from a
* {@code CharSequence}.
*/
@Warmup(iterations = 5, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 10, time = 500, timeUnit = TimeUnit.MILLISECONDS)
@State(Scope.Benchmark)
@Fork(1)
public class StringCharBufferBulkTransfer {
private static final int LENGTH = 16384;
char[] buf = new char[LENGTH];
CharBuffer cb = CharBuffer.wrap(new String(buf));
char[] dst = new char[LENGTH];
CharBuffer cbw = CharBuffer.allocate(LENGTH);
@Benchmark
public void absoluteBulkGet() {
cb.get(0, dst, 0, dst.length);
}
@Benchmark
public void relativeBulkGet() {
cb.get(dst, 0, dst.length);
cb.position(0);
}
@Benchmark
public void getChars() {
cb.getChars(0, LENGTH, dst, 0);
}
@Benchmark
public void absoluteBulkPut() {
cbw.put(0, cb, 0, dst.length);
}
}