1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_RUNTIME_NOTIFICATIONTHREAD_HPP 26 #define SHARE_RUNTIME_NOTIFICATIONTHREAD_HPP 27 28 #include "runtime/thread.hpp" 29 30 // A JavaThread for low memory detection support, GC and 31 // diagnostic framework notifications. This thread is not hidden 32 // from the external view to allow the debugger to stop at the 33 // breakpoints inside registred MXBean notification listeners. 34 35 class NotificationThread : public JavaThread { 36 friend class VMStructs; 37 private: 38 39 static NotificationThread* _instance; 40 41 static void notification_thread_entry(JavaThread* thread, TRAPS); 42 NotificationThread(ThreadFunction entry_point) : JavaThread(entry_point) {}; 43 44 public: 45 static void initialize(); 46 47 }; 48 49 #endif // SHARE_RUNTIME_NOTIFICATIONTHREAD_HPP