67 lines
2.3 KiB
Java
67 lines
2.3 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @bug 8015334
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* @summary Memory leak with kerning.
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*/
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import java.awt.EventQueue;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.font.TextAttribute;
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import java.util.HashMap;
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import java.util.Map;
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import javax.swing.JLabel;
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import javax.swing.SwingUtilities;
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public class KerningLeak {
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public static void main(String[] args) {
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EventQueue.invokeLater(new Runnable() {
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@Override
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public void run() {
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leak();
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}
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});
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}
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private static void leak() {
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Map<TextAttribute, Object> textAttributes = new HashMap<>();
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textAttributes.put(TextAttribute.FAMILY, "Sans Serif");
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textAttributes.put(TextAttribute.SIZE, 12);
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textAttributes.put(TextAttribute.KERNING, TextAttribute.KERNING_ON);
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Font font = Font.getFont(textAttributes);
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JLabel label = new JLabel();
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int dummy = 0;
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for (int i = 0; i < 500; i++) {
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if (i % 10 == 0) System.out.println("Starting iter " + (i+1));
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for (int j = 0; j <1000; j++) {
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FontMetrics fm = label.getFontMetrics(font);
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dummy += SwingUtilities.computeStringWidth(fm, Integer.toString(j));
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}
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}
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System.out.println("done " + dummy);
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}
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}
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