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/*
* Copyright (c) 2018, 2022 SAP SE. All rights reserved.
* Copyright (c) 2018, 2023, 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.
*/
/*
* @test
* @bug 8191101
* @summary Show Registers on assert/guarantee
* @library /test/lib
* @requires vm.flagless
* @requires (vm.debug == true) & (os.family == "linux")
* @author Thomas Stuefe (SAP)
* @modules java.base/jdk.internal.misc
* java.management
* @run driver ShowRegistersOnAssertTest
*/
// Note: this test can only run on debug since it relies on VMError::controlled_crash() which
// only exists in debug builds.
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.regex.Pattern;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
public class ShowRegistersOnAssertTest {
private static void do_test(boolean do_assert, // true - assert, false - guarantee
boolean show_registers_on_assert) throws Exception
{
System.out.println("Testing " + (do_assert ? "assert" : "guarantee") +
" with " + (show_registers_on_assert ? "-XX:+ShowRegistersOnAssert" : "-XX:-ShowRegistersOnAssert") + "...");
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
"-XX:+UnlockDiagnosticVMOptions", "-Xmx100M", "-XX:-CreateCoredumpOnCrash",
"-XX:ErrorHandlerTest=" + (do_assert ? "1" : "2"),
(show_registers_on_assert ? "-XX:+ShowRegistersOnAssert" : "-XX:-ShowRegistersOnAssert"),
"-version");
OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());
// we should have crashed with an internal error. We should definitly NOT have crashed with a segfault
// (which would be a sign that the assert poison page mechanism does not work).
output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
output_detail.shouldMatch("# +Internal Error.*");
}
public static void main(String[] args) throws Exception {
// Note: for now, this is only a regression test testing that the addition of ShowRegistersOnAssert does
// not break normal assert/guarantee handling. The feature is not implemented on all platforms and really testing
// it requires more effort.
do_test(false, false);
do_test(false, true);
do_test(true, false);
do_test(true, true);
}
}
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