8006fe8f75
Replaced MakeDeps and the includeDB files with more standardized solutions. Reviewed-by: coleenp, kvn, kamg
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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* Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_RUNTIME_STATSAMPLER_HPP
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#define SHARE_VM_RUNTIME_STATSAMPLER_HPP
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#include "runtime/perfData.hpp"
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#include "runtime/task.hpp"
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class StatSamplerTask;
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/*
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* The StatSampler class is responsible for periodically updating
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* sampled PerfData instances and writing the sampled values to the
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* PerfData memory region.
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*
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* In addition it is also responsible for providing a home for
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* PerfData instances that otherwise have no better home.
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*/
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class StatSampler : AllStatic {
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friend class StatSamplerTask;
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private:
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static StatSamplerTask* _task;
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static PerfDataList* _sampled;
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static void collect_sample();
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static void create_misc_perfdata();
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static void create_sampled_perfdata();
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static void sample_data(PerfDataList* list);
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static const char* get_system_property(const char* name, TRAPS);
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static void create_system_property_instrumentation(TRAPS);
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public:
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// Start/stop the sampler
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static void engage();
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static void disengage();
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static bool is_active() { return _task != NULL; }
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static void initialize();
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static void destroy();
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};
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void statSampler_exit();
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#endif // SHARE_VM_RUNTIME_STATSAMPLER_HPP
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