8315406: [REDO] serviceability/jdwp/AllModulesCommandTest.java ignores VM flags

Reviewed-by: cjplummer, dcubed

test/hotspot/jtreg/serviceability/jdwp/AllModulesCommandTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 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
@@ -72,12 +72,6 @@ public class AllModulesCommandTest implements DebuggeeLauncher.Listener {
         jdwpLatch.countDown();
     }
 
-    @Override
-    public void onDebuggeeError(String message) {
-        System.err.println("Debuggee error: '" + message + "'");
-        System.exit(1);
-    }
-
     private void doJdwp() throws Exception {
         try {
             // Establish JDWP socket connection

test/hotspot/jtreg/serviceability/jdwp/DebuggeeLauncher.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2021, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 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
@@ -22,9 +22,9 @@
  */
 
 import java.util.StringTokenizer;
-import jdk.test.lib.JDKToolFinder;
 import jdk.test.lib.JDWP;
 import static jdk.test.lib.Asserts.assertFalse;
+import jdk.test.lib.process.ProcessTools;
 
 /**
  * Launches the debuggee with the necessary JDWP options and handles the output
@@ -45,21 +45,14 @@ public class DebuggeeLauncher implements StreamHandler.Listener {
          */
         void onDebuggeeSendingCompleted();
 
-        /**
-         * Callback to handle any debuggee error
-         *
-         * @param line line from the debuggee's stderr
-         */
-        void onDebuggeeError(String line);
     }
 
     private int jdwpPort = -1;
-    private static final String CLS_DIR = System.getProperty("test.classes", "").trim();
     private static final String DEBUGGEE = "AllModulesCommandTestDebuggee";
+    private static final String JDWP_OPT = "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=0";
+
     private Process p;
     private final Listener listener;
-    private StreamHandler inputHandler;
-    private StreamHandler errorHandler;
 
     /**
      * @param listener the listener we report the debuggee events to
@@ -70,36 +63,20 @@ public class DebuggeeLauncher implements StreamHandler.Listener {
 
     /**
      * Starts the debuggee with the necessary JDWP options and handles the
-     * debuggee's stdout and stderr outputs
+     * debuggee's stdout output. stderr might contain jvm output, which is just printed to the log.
      *
      * @throws Throwable
      */
     public void launchDebuggee() throws Throwable {
 
-        ProcessBuilder pb = new ProcessBuilder(getCommand());
+        ProcessBuilder pb = ProcessTools.createTestJvm(JDWP_OPT, DEBUGGEE);
         p = pb.start();
-        inputHandler = new StreamHandler(p.getInputStream(), this);
-        errorHandler = new StreamHandler(p.getErrorStream(), this);
+        StreamHandler inputHandler = new StreamHandler(p.getInputStream(), this);
+        StreamHandler errorHandler = new StreamHandler(p.getErrorStream(), l -> System.out.println("[stderr]: " + l));
         inputHandler.start();
         errorHandler.start();
     }
 
-    /**
-     * Command to start the debuggee with the JDWP options and using the JDK
-     * under test
-     *
-     * @return the command
-     */
-    private String[] getCommand() {
-        return new String[]{
-            JDKToolFinder.getTestJDKTool("java"),
-            getJdwpOptions(),
-            "-cp",
-            CLS_DIR,
-            DEBUGGEE
-        };
-    }
-
     /**
      * Terminates the debuggee
      */
@@ -109,15 +86,6 @@ public class DebuggeeLauncher implements StreamHandler.Listener {
         }
     }
 
-    /**
-     * Debuggee JDWP options
-     *
-     * @return the JDWP options to start the debuggee with
-     */
-    private static String getJdwpOptions() {
-        return "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=0";
-    }
-
     /**
      * Gets JDWP port debuggee is listening on.
      *
@@ -129,16 +97,8 @@ public class DebuggeeLauncher implements StreamHandler.Listener {
     }
 
     @Override
-    public void onStringRead(StreamHandler handler, String line) {
-        if (handler.equals(errorHandler)) {
-            terminateDebuggee();
-            listener.onDebuggeeError(line);
-        } else {
-            processDebuggeeOutput(line);
-        }
-    }
-
-    private void processDebuggeeOutput(String line) {
+    public void onStringRead(String line) {
+        System.out.println("[stdout]: " + line);
         if (jdwpPort == -1) {
             JDWP.ListenAddress addr = JDWP.parseListenAddress(line);
             if (addr != null) {

test/hotspot/jtreg/serviceability/jdwp/StreamHandler.java

@@ -37,10 +37,9 @@ public class StreamHandler implements Runnable {
     public interface Listener {
         /**
          * Called when a line has been read from the process output stream
-         * @param handler this StreamHandler
          * @param s the line
          */
-        void onStringRead(StreamHandler handler, String s);
+        void onStringRead(String s);
     }
 
     private final ExecutorService executor;
@@ -71,7 +70,7 @@ public class StreamHandler implements Runnable {
             BufferedReader br = new BufferedReader(new InputStreamReader(is));
             String line;
             while ((line = br.readLine()) != null) {
-                listener.onStringRead(this, line);
+                listener.onStringRead(line);
             }
         } catch (Exception x) {
             throw new RuntimeException(x);