8240989: convert clhsdb "dumpheap" command from javascript to java

Reviewed-by: amenkov, ysuenaga

src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/CommandProcessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2020, 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
@@ -74,6 +74,7 @@ import sun.jvm.hotspot.runtime.JavaVFrame;
 import sun.jvm.hotspot.runtime.Threads;
 import sun.jvm.hotspot.runtime.VM;
 import sun.jvm.hotspot.tools.ObjectHistogram;
+import sun.jvm.hotspot.tools.JMap;
 import sun.jvm.hotspot.tools.PMap;
 import sun.jvm.hotspot.tools.PStack;
 import sun.jvm.hotspot.tools.StackTrace;
@@ -1702,6 +1703,29 @@ public class CommandProcessor {
                 }
             }
         },
+        new Command("dumpheap", "dumpheap [filename]", false) {
+            public void doit(Tokens t) {
+                if (t.countTokens() > 1) {
+                    usage();
+                } else {
+                    JMap jmap = new JMap();
+                    String filename;
+                    if (t.countTokens() == 1) {
+                        filename = t.nextToken();
+                    } else {
+                        filename = "heap.bin";;
+                    }
+                    try {
+                        jmap.writeHeapHprofBin(filename);
+                    } catch (Exception e) {
+                        err.println("Error: " + e);
+                        if (verboseExceptions) {
+                            e.printStackTrace(err);
+                        }
+                    }
+                }
+            }
+        },
     };
 
     private boolean verboseExceptions = false;

test/hotspot/jtreg/ProblemList-zgc.txt

@@ -28,6 +28,7 @@
 #############################################################################
 
 resourcehogs/serviceability/sa/TestHeapDumpForLargeArray.java 8220624   generic-all
+serviceability/sa/ClhsdbDumpheap.java                         8220624   generic-all
 serviceability/sa/CDSJMapClstats.java                         8220624   generic-all
 serviceability/sa/ClhsdbCDSJstackPrintAll.java                8220624   generic-all
 serviceability/sa/ClhsdbFindPC.java#id0                       8220624   generic-all

test/hotspot/jtreg/ProblemList.txt

@@ -102,6 +102,7 @@ serviceability/sa/ClhsdbAttach.java 8193639 solaris-all
 serviceability/sa/ClhsdbCDSCore.java 8193639 solaris-all
 serviceability/sa/ClhsdbCDSJstackPrintAll.java 8193639 solaris-all
 serviceability/sa/CDSJMapClstats.java 8193639 solaris-all
+serviceability/sa/ClhsdbDumpheap.java 8193639 solaris-all
 serviceability/sa/ClhsdbField.java 8193639 solaris-all
 serviceability/sa/ClhsdbFindPC.java#id0 8193639 solaris-all
 serviceability/sa/ClhsdbFindPC.java#id1 8193639 solaris-all

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

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2020, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * 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.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import jdk.test.lib.apps.LingeredApp;
+import jdk.test.lib.hprof.parser.HprofReader;
+import jtreg.SkippedException;
+
+/**
+ * @test
+ * @bug 8240989
+ * @summary Test clhsdb dumpheap command
+ * @requires vm.hasSA
+ * @library /test/lib
+ * @run main/othervm ClhsdbDumpheap
+ */
+
+public class ClhsdbDumpheap {
+    public static void printStackTraces(String file) {
+        try {
+            System.out.println("HprofReader.getStack() output:");
+            String output = HprofReader.getStack(file, 0);
+            if (!output.contains("LingeredApp.main")) {
+                throw new RuntimeException("'LingeredApp.main' missing from stdout/stderr");
+            }
+        } catch (Exception ex) {
+            throw new RuntimeException("Test ERROR " + ex, ex);
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        System.out.println("Starting ClhsdbDumpheap test");
+
+        LingeredApp theApp = null;
+        try {
+            String heapDumpFileName = "heapdump.bin";
+            ClhsdbLauncher test = new ClhsdbLauncher();
+
+            theApp = new LingeredApp();
+            LingeredApp.startApp(theApp);
+            System.out.println("Started LingeredApp with pid " + theApp.getPid());
+
+            List<String> cmds = List.of("dumpheap " + heapDumpFileName);
+
+            Map<String, List<String>> expStrMap = new HashMap<>();
+            expStrMap.put("dumpheap", List.of(
+                    "heap written to " + heapDumpFileName));
+
+            test.run(theApp.getPid(), cmds, expStrMap, null);
+            printStackTraces(heapDumpFileName);
+        } catch (SkippedException se) {
+            throw se;
+        } catch (Exception ex) {
+            throw new RuntimeException("Test ERROR " + ex, ex);
+        } finally {
+            LingeredApp.stopApp(theApp);
+        }
+        System.out.println("Test PASSED");
+    }
+}