--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/services/gcNotifier.hpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2011, 2012, 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.
+ *
+ */
+
+#ifndef SHARE_VM_SERVICES_GCNOTIFIER_HPP
+#define SHARE_VM_SERVICES_GCNOTIFIER_HPP
+
+#include "memory/allocation.hpp"
+#include "services/memoryPool.hpp"
+#include "services/memoryService.hpp"
+#include "services/memoryManager.hpp"
+
+class GCNotificationRequest : public CHeapObj<mtInternal> {
+  friend class GCNotifier;
+  GCNotificationRequest *next;
+  jlong timestamp;
+  GCMemoryManager *gcManager;
+  const char *gcAction;
+  const char *gcCause;
+  GCStatInfo *gcStatInfo;
+public:
+  GCNotificationRequest(jlong ts, GCMemoryManager *manager, const char*action, const char *cause,GCStatInfo *info) {
+    next = NULL;
+    timestamp = ts;
+    gcManager = manager;
+    gcAction = action;
+    gcCause = cause;
+    gcStatInfo = info;
+  }
+
+  ~GCNotificationRequest() {
+    delete gcStatInfo;
+  }
+};
+
+class GCNotifier : public AllStatic {
+  friend class ServiceThread;
+private:
+  static GCNotificationRequest *first_request;
+  static GCNotificationRequest *last_request;
+  static void addRequest(GCNotificationRequest *request);
+  static GCNotificationRequest *getRequest();
+  static void sendNotificationInternal(TRAPS);
+public:
+  static void pushNotification(GCMemoryManager *manager, const char *action, const char *cause);
+  static bool has_event();
+  static void sendNotification(TRAPS);
+};
+
+#endif // SHARE_VM_SERVICES_GCNOTIFIER_HPP