jdk8-mips64-public/hotspot: src/share/vm/runtime/statSampler.hpp@c70a245cad3a

6670684: 4/5 SA command universe did not print out CMS space information
Summary: Forward port of Yumin's fix for 6670684 from HSX-11; Yumin verified the port was correct.
Reviewed-by: dcubed

     1 /*

     2  * Copyright 2001-2002 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  */

    25 class StatSamplerTask;

    27 /*

    28  * The StatSampler class is responsible for periodically updating

    29  * sampled PerfData instances and writing the sampled values to the

    30  * PerfData memory region.

    31  *

    32  * In addition it is also responsible for providing a home for

    33  * PerfData instances that otherwise have no better home.

    34  */

    35 class StatSampler : AllStatic {

    37   friend class StatSamplerTask;

    39   private:

    41     static StatSamplerTask* _task;

    42     static PerfDataList* _sampled;

    44     static void collect_sample();

    45     static void create_misc_perfdata();

    46     static void create_sampled_perfdata();

    47     static void sample_data(PerfDataList* list);

    48     static const char* get_system_property(const char* name, TRAPS);

    49     static void create_system_property_instrumentation(TRAPS);

    51   public:

    52     // Start/stop the sampler

    53     static void engage();

    54     static void disengage();

    56     static bool is_active() { return _task != NULL; }

    58     static void initialize();

    59     static void destroy();

    60 };

    62 void statSampler_exit();

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/statSampler.hpp@c70a245cad3a

src/share/vm/runtime/statSampler.hpp