103 lines
3.6 KiB
Java
103 lines
3.6 KiB
Java
/*
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* Copyright (c) 2018, 2023, 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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* @test
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* @bug 7179701
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* @summary MaxJavaStackTraceDepth of zero is not handled correctly/consistently in the VM
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* @requires vm.flagless
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* @modules java.base/jdk.internal.misc:open
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* @modules java.base/java.lang:open
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* @library /test/lib
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* @run driver TestMaxJavaStackTraceDepth runTest
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*/
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import java.lang.reflect.Field;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class TestMaxJavaStackTraceDepth {
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static final int maxDepth = 2010;
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// Inner class that throws a lot of exceptions
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static class Thrower {
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int count = 0;
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int getDepth(Throwable t) throws Exception {
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Field f = Throwable.class.getDeclaredField("depth");
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f.setAccessible(true); // it's private
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return f.getInt(t);
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}
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void callThrow() throws Exception {
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if (++count < maxDepth) {
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callThrow();
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} else {
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throw new RuntimeException("depth tested " + maxDepth);
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}
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}
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void testThrow() throws Exception {
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try {
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count = getDepth(new Throwable()); // count stack to this point.
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callThrow();
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} catch(Exception e) {
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e.getStackTrace();
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System.out.println(e.getMessage());
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int throwableDepth = getDepth(e);
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System.out.println("java.lang.RuntimeException, " + throwableDepth);
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}
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}
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}
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public static void main(String args[]) throws Exception {
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if (args.length > 0) {
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// Test values of MaxJavaStackTraceDepth
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int[] depths = {0, 20, 1024};
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for (int d : depths) {
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System.out.println("running test with -XX:MaxJavaStackTraceDepth=" + d);
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:stacktrace=info",
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"-XX:MaxJavaStackTraceDepth=" + d,
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"--add-opens",
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"java.base/java.lang=ALL-UNNAMED",
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"TestMaxJavaStackTraceDepth");
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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if (d == 0) {
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// Should get all the elements in stack trace
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output.shouldContain("java.lang.RuntimeException, " + maxDepth);
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} else {
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output.shouldContain("java.lang.RuntimeException, " + d);
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}
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output.shouldHaveExitValue(0);
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}
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} else {
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// run the test
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Thrower t = new Thrower();
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t.testThrow();
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}
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}
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}
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