JDK14/Java14源码在线阅读

/*
 * 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.
 *
 * 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.
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#ifndef SHARE_RUNTIME_NOTIFICATIONTHREAD_HPP
#define SHARE_RUNTIME_NOTIFICATIONTHREAD_HPP

#include "runtime/thread.hpp"

// A JavaThread for low memory detection support, GC and
// diagnostic framework notifications. This thread is not hidden
// from the external view to allow the debugger to stop at the
// breakpoints inside registred MXBean notification listeners.

class NotificationThread : public JavaThread {
  friend class VMStructs;
 private:

  static NotificationThread* _instance;


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