VtablesTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * 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.
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/*
 * @test
 * @bug 8141564
 * @summary vtables=trace should have logging from each of the statements in the code
 * @library /test/lib
 * @compile ClassB.java
 *          p1/A.java
 *          p2/B.jcod
 *          p1/C.java
 *          p2/D.java
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver VtablesTest
 */

import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;

public class VtablesTest {
    public static void main(String[] args) throws Exception {
        if (Platform.isDebugBuild()) {
            ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:vtables=trace", "ClassB");
            OutputAnalyzer output = new OutputAnalyzer(pb.start());
            output.shouldContain("copy vtable from ClassA to ClassB");
            output.shouldContain("Initializing: ClassB");
            output.shouldContain("adding ClassB.Method1()V");
            output.shouldContain("] overriding with ClassB.Method2()V");
            output.shouldContain("invokevirtual resolved method: caller-class:ClassB");
            output.shouldContain("invokevirtual selected method: receiver-class:ClassB");
            output.shouldContain("NOT overriding with p2.D.nooverride()V");
            output.shouldHaveExitValue(0);

            pb = ProcessTools.createJavaProcessBuilder("-Xlog:vtables=trace", "p1/C");
            output = new OutputAnalyzer(pb.start());
            output.shouldContain("transitive overriding superclass ");
            output.shouldHaveExitValue(0);
        }
    }
}