test/hotspot/jtreg/serviceability/sa/ClhsdbInspect.java

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/**
 * @test
 * @bug 8192985
 * @summary Test the clhsdb 'inspect' command
 * @requires vm.hasSA
 * @library /test/lib
 * @run main/othervm ClhsdbInspect
 */

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.ArrayList;
import jdk.test.lib.apps.LingeredApp;
import jtreg.SkippedException;

public class ClhsdbInspect {

    public static void main(String[] args) throws Exception {
        System.out.println("Starting the ClhsdbInspect test");

        LingeredAppWithLock theApp = null;
        try {
            ClhsdbLauncher test = new ClhsdbLauncher();

            theApp = new LingeredAppWithLock();
            LingeredApp.startApp(null, theApp);
            System.out.println("Started LingeredApp with pid " + theApp.getPid());

            // Run the 'jstack -v' command to get the address of a Method*,
            // the oop address of a java.lang.ref.ReferenceQueue$Lock
            // and the oop address of a java.lang.Class object
            List<String> cmds = List.of("jstack -v");

            String jstackOutput = test.run(theApp.getPid(), cmds, null, null);

            if (jstackOutput == null) {
                // Output could be null due to attach permission issues
                // and if we are skipping this.
                LingeredApp.stopApp(theApp);
                throw new SkippedException("attach permission issues");
            }

            Map<String, String> tokensMap = new HashMap<>();
            tokensMap.put("(a java.lang.Class for LingeredAppWithLock)",
                          "instance of Oop for java/lang/Class");
            tokensMap.put("Method*=", "Type is Method");
            tokensMap.put("(a java.lang.ref.ReferenceQueue$Lock)",
                          "instance of Oop for java/lang/ref/ReferenceQueue$Lock");

            String[] lines = jstackOutput.split("\\R");

            for (String key: tokensMap.keySet()) {
                cmds = new ArrayList<String>();
                Map<String, List<String>> expStrMap = new HashMap<>();

                String addressString = null;
                for (String line : lines) {
                    if (line.contains(key)) {
                        // Escape the token "Method*=" because the split method uses
                        // a regex, not just a straight String.
                        String escapedKey = key.replace("*","\\*");
                        String[] words = line.split(escapedKey+"|[ ]");
                        for (String word : words) {
                            word = word.replace("<","").replace(">","");
                            if (word.startsWith("0x")) {
                                addressString = word;
                                break;
                            }
                        }
                        if (addressString != null)
                            break;
                      }
                  }

                String cmd = "inspect " + addressString;
                cmds.add(cmd);
                expStrMap.put(cmd, List.of(tokensMap.get(key)));
                test.run(theApp.getPid(), cmds, expStrMap, null);
            }
        } catch (SkippedException e) {
            throw e;
        } catch (Exception ex) {
            throw new RuntimeException("Test ERROR " + ex, ex);
        } finally {
            LingeredApp.stopApp(theApp);
        }
        System.out.println("Test PASSED");
    }
}