--- /dev/null 2018-06-17 23:18:20.806999507 +0800
+++ new/src/share/classes/jdk/jfr/internal/dcmd/DCmdDump.java 2019-01-29 10:59:58.255011248 +0800
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2012, 2019, 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. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+package jdk.jfr.internal.dcmd;
+
+import java.io.IOException;
+import java.nio.file.InvalidPathException;
+import java.util.HashMap;
+import java.util.Map;
+
+import jdk.jfr.Recording;
+import jdk.jfr.internal.PlatformRecording;
+import jdk.jfr.internal.PrivateAccess;
+import jdk.jfr.internal.SecuritySupport.SafePath;
+import jdk.jfr.internal.Utils;
+import jdk.jfr.internal.WriteableUserPath;
+
+/**
+ * JFR.dump
+ *
+ */
+//Instantiated by native
+final class DCmdDump extends AbstractDCmd {
+ /**
+ * Execute JFR.dump.
+ *
+ * @param recordingText name or id of the recording to dump, or
+ * null
+ *
+ * @param textPath file path where recording should be written.
+ *
+ * @return result output
+ *
+ * @throws DCmdException if the dump could not be completed
+ */
+ public String execute(String recordingText, String textPath, Boolean pathToGcRoots) throws DCmdException {
+ if (textPath == null) {
+ throw new DCmdException("Failed to dump %s, missing filename.", recordingText);
+ }
+ Recording recording = findRecording(recordingText);
+ try {
+ SafePath dumpFile = resolvePath(textPath, "Failed to dump %s");
+ // create file for JVM
+ Utils.touch(dumpFile.toPath());
+ PlatformRecording r = PrivateAccess.getInstance().getPlatformRecording(recording);
+ WriteableUserPath wup = new WriteableUserPath(dumpFile.toPath());
+
+ Map overlay = new HashMap<>();
+ Utils.updateSettingPathToGcRoots(overlay, pathToGcRoots);
+
+ r.copyTo(wup, "Dumped by user", overlay);
+ reportOperationComplete("Dumped", recording, dumpFile);
+ } catch (IOException | InvalidPathException e) {
+ throw new DCmdException("Failed to dump %s. Could not copy recording for dump. %s", recordingText, e.getMessage());
+ }
+ return getResult();
+ }
+
+}