8269770: nsk tests should start IOPipe channel before launch debuggee - Debugee.prepareDebugee

Reviewed-by: sspitsyn, kevinw

Author: Alex Menkov

test/hotspot/jtreg/vmTestbase/nsk/jdi/Accessible/isPackagePrivate/accipp001.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2021, 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
@@ -109,24 +109,8 @@ private int runThis (String argv[], PrintStream out) {
         logHandler      = new Log(out, argsHandler);
         Binder binder   = new Binder(argsHandler, logHandler);
 
-
-        if (argsHandler.verbose()) {
-            debugee = binder.bindToDebugee(debugeeName + " -vbs");
-        } else {
-            debugee = binder.bindToDebugee(debugeeName);
-        }
-
-        IOPipe pipe     = new IOPipe(debugee);
-
-
-        debugee.redirectStderr(out);
-        debugee.resume();
-
-        String line = pipe.readln();
-        if (!line.equals("ready")) {
-            logHandler.complain("# Cannot recognize debugee's signal: " + line);
-            return 2;
-        };
+        debugee = Debugee.prepareDebugee(argsHandler, logHandler,
+                debugeeName + (argsHandler.verbose() ? " -vbs" : ""));
 
 //        ReferenceType classes[] = debugee.classes();
 //        for (int i=0; i<classes.length; i++) {
@@ -165,10 +149,8 @@ private int runThis (String argv[], PrintStream out) {
             return 2;
         };
 
-        pipe.println("quit");
-        debugee.waitFor();
-
-        int status = debugee.getStatus();
+        debugee.sendSignal("quit");
+        int status = debugee.endDebugee();
         if (status != 95) {
             logHandler.complain("Debugee's exit status=" + status);
             return 2;

test/hotspot/jtreg/vmTestbase/nsk/share/jpda/DebugeeProcess.java

@@ -110,12 +110,16 @@ public Process getProcess() {
 
     // --------------------------------------------------- //
 
-    /** Created and return new IOPipe channel to the debugee VM. */
+    /** Create and return new IOPipe channel to the debuggee VM.
+     * The channel should be created before debuggee starts execution,
+     * i.e. the method assumes debuggee is started, but suspended before
+     * its main class is loaded.
+     */
     public IOPipe createIOPipe() {
         if (pipe != null) {
             throw new TestBug("IOPipe channel is already created");
         }
-        pipe = new IOPipe(this);
+        pipe = IOPipe.startDebuggerPipe(binder);
         return pipe;
     }
 

test/hotspot/jtreg/vmTestbase/nsk/share/jpda/IOPipe.java

@@ -84,7 +84,7 @@ protected IOPipe(Log log, String host, int port, long timeout, boolean listening
     /**
      * Creates and starts listening <code>IOPipe</code> at debugger side.
      */
-    public static IOPipe startDebuggerPipe(Binder binder) {
+    public static IOPipe startDebuggerPipe(DebugeeBinder binder) {
         IOPipe ioPipe = new IOPipe(binder.getLog(),
                 binder.getArgumentHandler().getDebugeeHost(),
                 binder.getArgumentHandler().getPipePortNumber(),
@@ -95,7 +95,6 @@ public static IOPipe startDebuggerPipe(Binder binder) {
         return ioPipe;
     }
 
-
     protected void connect() {
         super.connect();
     }