/* * Copyright (c) 2016, 2018, 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 jdk.jfr.jvm;
/** * @test * @summary Checks that the JVM can rollback on native initialization failures. * @key jfr * @requires vm.hasJFR * @library /test/lib * @modules jdk.jfr/jdk.jfr.internal * @run main/othervm jdk.jfr.jvm.TestCreateNative
*/ publicclass TestCreateNative {
// This is a white-box test where we fabricate a native initialization // error by calling JMV#createNative(false), which will tear down // all native structures after they are setup, as if something went wrong // at the last step. publicstaticvoid main(String... args) throws Exception {
JVM jvm = JVM.getJVM(); // Ensure that repeated failures can be handled for (int i = 1; i < 4; i++) {
System.out.println("About to try failed initialization, attempt " + i + " out of 3");
assertFailedInitialization(jvm);
System.out.println("As expected, initialization failed.");
} // Ensure that Flight Recorder can be initialized properly after failures
Configuration defConfig = Configuration.getConfiguration("default");
Recording r = new Recording(defConfig);
r.start();
r.stop();
r.dump(Paths.get("recording.jfr"));
r.close();
}
privatestaticvoid assertFailedInitialization(JVM jvm) throws Exception { try {
jvm.createFailedNativeJFR(); thrownew Exception("Expected failure when creating native JFR");
} catch (IllegalStateException ise) {
String message = ise.getMessage(); if (!message.equals("Unable to start Jfr")) { thrownew Exception("Expected failure on initialization of native JFR");
}
}
}
}
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