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#ifndef SHARE_GC_PARALLEL_SPACECOUNTERS_HPP
#define SHARE_GC_PARALLEL_SPACECOUNTERS_HPP
#include "gc/parallel/mutableSpace.hpp"
#include "gc/shared/generationCounters.hpp"
#include "runtime/perfData.hpp"
#include "utilities/macros.hpp"
// A SpaceCounter is a holder class for performance counters
// that track a space;
class SpaceCounters: public CHeapObj<mtGC> {
friend class VMStructs;
private :
PerfVariable* _capacity;
PerfVariable* _used;
// Constant PerfData types don't need to retain a reference.
// However, it's a good idea to document them here.
// PerfConstant* _size;
MutableSpace* _object_space;
char * _name_space;
public :
SpaceCounters(const char * name, int ordinal, size_t max_size,
MutableSpace* m, GenerationCounters* gc);
~SpaceCounters();
inline void update_capacity() {
_capacity->set_value(_object_space->capacity_in_bytes());
}
void update_used();
inline void update_all() {
update_used();
update_capacity();
}
const char * name_space() const { return _name_space; }
};
class MutableSpaceUsedHelper: public PerfLongSampleHelper {
private :
MutableSpace* _m;
public :
MutableSpaceUsedHelper(MutableSpace* m) : _m(m) { }
jlong take_sample() override;
};
#endif // SHARE_GC_PARALLEL_SPACECOUNTERS_HPP
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