/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
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* under the terms of the GNU General Public License version 2 only , as
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* 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 ) .
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* 2 along with this work ; if not , write to the Free Software Foundation ,
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#ifndef SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
#define SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
#include "gc/shared/generationCounters.hpp"
#include "gc/shared/space.hpp"
#include "runtime/perfData.hpp"
// A CSpaceCounters is a holder class for performance counters
// that track a space;
class CSpaceCounters: public CHeapObj<mtGC> {
friend class VMStructs;
private :
PerfVariable* _capacity;
PerfVariable* _used;
PerfVariable* _max_capacity;
// Constant PerfData types don't need to retain a reference.
// However, it's a good idea to document them here.
// PerfConstant* _size;
ContiguousSpace* _space;
char * _name_space;
public :
CSpaceCounters(const char * name, int ordinal, size_t max_size,
ContiguousSpace* s, GenerationCounters* gc);
~CSpaceCounters();
void update_capacity();
void update_used();
void update_all();
const char * name_space() const { return _name_space; }
};
class ContiguousSpaceUsedHelper : public PerfLongSampleHelper {
private :
ContiguousSpace* _space;
public :
ContiguousSpaceUsedHelper(ContiguousSpace* space) : _space(space) { }
jlong take_sample() override;
};
#endif // SHARE_GC_SERIAL_CSPACECOUNTERS_HPP
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