1 /*

     2  * Copyright 1998 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    24 

    25 // Prints periodic memory usage trace of HotSpot VM

    26 

    27 class MemProfilerTask;

    28 

    29 class MemProfiler : AllStatic {

    30  friend class MemProfilerTask;

    31  private:

    32   static MemProfilerTask* _task;

    33   static FILE* _log_fp;

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

    35   static void do_trace()      PRODUCT_RETURN;

    36  public:

    37   // Start/stop the profiler

    38   static void engage()        PRODUCT_RETURN;

    39   static void disengage()     PRODUCT_RETURN;

    40   // Tester

    41   static bool is_active()     PRODUCT_RETURN0;

    42 };