mem_footprint.hh

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/*
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 * Authors: Rahul Thakur
 */

#ifndef __MEM_PROBES_MEM_FOOTPRINT_HH__
#define __MEM_PROBES_MEM_FOOTPRINT_HH__

#include <unordered_set>

#include "base/callback.hh"
#include "mem/packet.hh"
#include "mem/probes/base.hh"
#include "sim/stats.hh"
#include "sim/system.hh"

struct MemFootprintProbeParams;

class MemFootprintProbe : public BaseMemProbe
{
  public:
    typedef std::unordered_set<Addr> AddrSet;

    MemFootprintProbe(MemFootprintProbeParams *p);
    void regStats() override;
    // Fix footprint tracking state on stat reset
    void statReset();

  protected:
    const uint8_t cacheLineSizeLg2;
    const uint8_t pageSizeLg2;
    const uint64_t totalCacheLinesInMem;
    const uint64_t totalPagesInMem;

    void insertAddr(Addr addr, AddrSet *set, uint64_t limit);
    void handleRequest(const ProbePoints::PacketInfo &pkt_info) override;

    Stats::Scalar fpCacheLine;
    Stats::Scalar fpCacheLineTotal;
    Stats::Scalar fpPage;
    Stats::Scalar fpPageTotal;

    // Addr set to track unique cache lines accessed
    AddrSet cacheLines;
    // Addr set to track unique cache lines accessed since simulation begin
    AddrSet cacheLinesAll;
    // Addr set to track unique pages accessed
    AddrSet pages;
    // Addr set to track unique pages accessed since simulation begin
    AddrSet pagesAll;
    System *system;
};

#endif  //__MEM_PROBES_MEM_FOOTPRINT_HH__