activity.hh

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/*
 * Copyright (c) 2006 The Regents of The University of Michigan
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#ifndef __CPU_ACTIVITY_HH__
#define __CPU_ACTIVITY_HH__
 
#include "base/trace.hh"
#include "cpu/timebuf.hh"
 
class ActivityRecorder
{
  public:
    ActivityRecorder(const std::string &name, int num_stages,
                     int longest_latency, int count);
    ~ActivityRecorder();
 
    void activity();
 
    void advance();
 
    void activateStage(const int idx);
 
    void deactivateStage(const int idx);
 
    bool getStageActive(const int idx) const { return stageActive[idx]; }
 
    int getNumStages() const { return numStages; }
 
    int getActivityCount() const { return activityCount; }
 
    void setActivityCount(int count)
    { activityCount = count; }
 
    bool active() { return activityCount; }
 
    void reset();
 
    void dump();
 
    void validate();
 
    const std::string &name() const { return _name; }
 
  private:
    // provide name() for DPRINTF.
    std::string _name;
 
    TimeBuffer<bool> activityBuffer;
 
    int longestLatency;
 
    int activityCount;
 
    int numStages;
 
    bool *stageActive;
};
 
#endif // __CPU_ACTIVITY_HH__