--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/FilePurger.java	Thu Sep 12 11:32:03 2019 -0700
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/FilePurger.java	Thu Sep 12 20:45:23 2019 -0700
@@ -1,47 +1,73 @@
-package jdk.jfr.internal;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.LinkedHashSet;
-import java.util.Set;
-
-import jdk.jfr.internal.SecuritySupport.SafePath;
-
-// This class keeps track of files that can't be deleted
-// so they can a later staged be removed.
-final class FilePurger {
-
-	private final static Set<SafePath> paths = new LinkedHashSet<>();
-
-	public synchronized static void add(SafePath p) {
-		paths.add(p);
-		if (paths.size() > 1000) {
-			removeOldest();
-		}
-	}
-
-	public synchronized static void purge() {
-		if (paths.isEmpty()) {
-			return;
-		}
-
-		for (SafePath p : new ArrayList<>(paths)) {
-			if (delete(p)) {
-				paths.remove(p);
-			}
-		}
-	}
-
-    private static void removeOldest() {
-        SafePath oldest = paths.iterator().next();
-        paths.remove(oldest);
-    }
-
-	private static boolean delete(SafePath p) {
-		try {
-			SecuritySupport.delete(p);
-			return true;
-		} catch (IOException e) {
-			return false;
-		}
-	}
-}
+/*
+ * Copyright (c) 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;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import jdk.jfr.internal.SecuritySupport.SafePath;
+
+// This class keeps track of files that can't be deleted
+// so they can a later staged be removed.
+final class FilePurger {
+
+    private final static Set<SafePath> paths = new LinkedHashSet<>();
+
+    public synchronized static void add(SafePath p) {
+        paths.add(p);
+        if (paths.size() > 1000) {
+            removeOldest();
+        }
+    }
+
+    public synchronized static void purge() {
+        if (paths.isEmpty()) {
+            return;
+        }
+
+        for (SafePath p : new ArrayList<>(paths)) {
+            if (delete(p)) {
+                paths.remove(p);
+            }
+        }
+    }
+
+    private static void removeOldest() {
+        SafePath oldest = paths.iterator().next();
+        paths.remove(oldest);
+    }
+
+    private static boolean delete(SafePath p) {
+        try {
+            SecuritySupport.delete(p);
+            return true;
+        } catch (IOException e) {
+            return false;
+        }
+    }
+}