statSampler.hpp revision 0
0N/A/*
0N/A * Copyright 2001-2002 Sun Microsystems, Inc. All Rights Reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
0N/A * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
0N/A * CA 95054 USA or visit www.sun.com if you need additional information or
0N/A * have any questions.
0N/A *
0N/A */
0N/A
0N/Aclass StatSamplerTask;
0N/A
0N/A/*
0N/A * The StatSampler class is responsible for periodically updating
0N/A * sampled PerfData instances and writing the sampled values to the
0N/A * PerfData memory region.
0N/A *
0N/A * In addition it is also responsible for providing a home for
0N/A * PerfData instances that otherwise have no better home.
0N/A */
0N/Aclass StatSampler : AllStatic {
0N/A
0N/A friend class StatSamplerTask;
0N/A
0N/A private:
0N/A
0N/A static StatSamplerTask* _task;
0N/A static PerfDataList* _sampled;
0N/A
0N/A static void collect_sample();
0N/A static void create_misc_perfdata();
0N/A static void create_sampled_perfdata();
0N/A static void sample_data(PerfDataList* list);
0N/A static const char* get_system_property(const char* name, TRAPS);
0N/A static void create_system_property_instrumentation(TRAPS);
0N/A
0N/A public:
0N/A // Start/stop the sampler
0N/A static void engage();
0N/A static void disengage();
0N/A
0N/A static bool is_active() { return _task != NULL; }
0N/A
0N/A static void initialize();
0N/A static void destroy();
0N/A};
0N/A
0N/Avoid statSampler_exit();
0N/A