pc_count_pair.hh

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#ifndef __PC_COUNT_PAIR_HH__
#define __PC_COUNT_PAIR_HH__
 
#include "base/types.hh"
 
namespace gem5
{
 
class PcCountPair
{
 
  private:
 
    Addr pc;
    uint64_t count;
 
  public:
 
    explicit constexpr PcCountPair(Addr _pc, uint64_t _count) :
        pc(_pc), count(_count) {}
 
    PcCountPair() : pc(0), count(0) {}
 
    constexpr Addr getPC() const { return pc; }
    constexpr uint64_t getCount() const { return count; }
 
    constexpr bool
    operator>(const PcCountPair& cc) const
    {
        return count > cc.getCount();
    }
 
    constexpr bool
    operator==(const PcCountPair& cc) const
    {
        return (pc == cc.getPC() && count == cc.getCount());
    }
 
    std::string
    to_string() const
    {
        std::string s = "(" + std::to_string(pc)
                                    + "," + std::to_string(count) + ")";
        return s;
    }
 
    struct HashFunction
    {
        size_t operator()(const PcCountPair& item) const
        {
            size_t xHash = std::hash<uint64_t>()(item.pc);
            size_t yHash = std::hash<uint64_t>()(item.count);
            return xHash * 2 + yHash;
        }
    };
 
};
 
} // namespace gem5
 
#endif // __PC_COUNT_PAIR_HH__