/*

 * Copyright (c) 1998, 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.

 *

 */

// Prints periodic memory usage trace of HotSpot VM

class MemProfilerTask;

class MemProfiler : AllStatic {

 friend class MemProfilerTask;

 private:

  static MemProfilerTask* _task;

  static FILE* _log_fp;

  // Do trace (callback from MemProfilerTask and from disengage)

  static void do_trace()      PRODUCT_RETURN;

 public:

  // Start/stop the profiler

  static void engage()        PRODUCT_RETURN;

  static void disengage()     PRODUCT_RETURN;

  // Tester

  static bool is_active()     PRODUCT_RETURN0;

};