|
/*
* Copyright (c) 2001, 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.
*
* 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.
*
*/
#ifndef SHARE_RUNTIME_STATSAMPLER_HPP
#define SHARE_RUNTIME_STATSAMPLER_HPP
#include "runtime/perfData.hpp"
#include "runtime/task.hpp"
class StatSamplerTask;
/*
* The StatSampler class is responsible for periodically updating
* sampled PerfData instances and writing the sampled values to the
* PerfData memory region.
*
* In addition it is also responsible for providing a home for
* PerfData instances that otherwise have no better home.
*/
class StatSampler : AllStatic {
friend class StatSamplerTask;
private:
static StatSamplerTask* _task;
static PerfDataList* _sampled;
static void collect_sample();
static void create_misc_perfdata();
static void create_sampled_perfdata();
static void sample_data(PerfDataList* list);
static void assert_system_property(const char* name, const char* value, TRAPS);
static void add_property_constant(CounterNS name_space, const char* name, TRAPS);
static void add_property_constant(CounterNS name_space, const char* name, const char* value, TRAPS);
static void create_system_property_instrumentation(TRAPS);
public:
// Start/stop the sampler
static void engage();
static void disengage();
static bool is_active() { return _task != NULL; }
static void initialize();
static void destroy();
};
#endif // SHARE_RUNTIME_STATSAMPLER_HPP
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet)
¤
|
Haftungshinweis
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung ist noch experimentell.
|
