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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test GenerateOopMap
 * @bug 8379015
 * @requires vm.flagless
 * @modules java.base/jdk.internal.misc
 * @library /test/lib
 * @run driver GenerateOopMapTest
 */

import java.nio.file.Files;
import java.nio.file.Path;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.Platform;

public class GenerateOopMapTest {

    static String infoPattern = "[generateoopmap]";
    static String debugPattern = "[generateoopmap] Basicblock#0 begins at:";
    static String tracePattern = "[trace][generateoopmap]        5  vars = 'r'      stack = 'v'   monitors = ''  \tifne";
    static String traceDetailPattern = "[generateoopmap]         0 vars     = ( r  |slot0)    invokestatic()V";

    static void test() throws Exception {
        // Don't print much with info level.
        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:generateoopmap=info",
                                                                             "GenerateOopMapTest", "test");
        OutputAnalyzer o = new OutputAnalyzer(pb.start());
        o.shouldNotContain(infoPattern).shouldHaveExitValue(0);

        // Prints bytecodes and BasicBlock information in debug.
        pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:generateoopmap=debug",
                                                              "GenerateOopMapTest", "test");
        o = new OutputAnalyzer(pb.start());
        o.shouldContain(debugPattern).shouldHaveExitValue(0);

        // Prints ref/val for each bytecode in trace.
        pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:generateoopmap=trace",
                                                              "GenerateOopMapTest", "test");
        o = new OutputAnalyzer(pb.start());
        o.shouldContain(tracePattern).shouldHaveExitValue(0);

        // Prints extra stuff with detailed. Not sure how useful this is but keep it for now.
        if (Platform.isDebugBuild()) {
            pb = ProcessTools.createLimitedTestJavaProcessBuilder("-Xlog:generateoopmap=trace",
                                                                  "-XX:+Verbose",
                                                                  "GenerateOopMapTest", "test");
            o = new OutputAnalyzer(pb.start());
            o.shouldContain(traceDetailPattern).shouldHaveExitValue(0);
        }
    };

    public static void main(String... args) throws Exception {
        System.gc();
        if (args.length == 0) {
            test();
        }
    }
}