Profiler.h

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// $Id$
//==============================================================================
//==============================================================================
 
#ifndef _PROFILER_H
#define _PROFILER_H
 
#include <iostream>
#include <string>
#include <vector>
#include <map>
#include <ctime>
 
#ifdef HAS_TRACY
#define TRACY_ENABLE 1
#include <tracy/Tracy.hpp>
#endif
 
 
class Profiler
{
public:
  explicit Profiler(const std::string& name, bool doReport = true);
  ~Profiler();
 
  void start(const std::string& funcName);
  void stop(const std::string& funcName);
 
  template<class Stream> void report(Stream& os) const;
  void clear() { myTimers.clear(); allCPU = allWall = 0.0; nRunners = 0; }
 
  static bool indentReport; 
 
private:
  struct Profile
  {
    clock_t startCPU;  
    double  startWall; 
    double  totalCPU;  
    double  totalWall; 
    size_t  nCalls;    
    bool    running;   
    int     level;     
 
    Profile() : nCalls(0), running(false), level(-1)
    { startWall = totalCPU = totalWall = 0.0; startCPU = 0; }
    bool haveTime() const { return totalCPU >= 0.005 || totalWall >= 0.005; }
  };
 
  friend std::ostream& operator<<(std::ostream& os, const Profile& p);
 
  std::string myName; 
  bool autoReport;    
 
  using ProfileMap = std::map<std::string,Profile>; 
 
  ProfileMap              myTimers;  
  std::vector<ProfileMap> myMTimers; 
 
  double allCPU;  
  double allWall; 
 
  int nRunners; 
};
 
 
namespace utl
{
  extern Profiler* profiler; 
 
  class prof
  {
    const char* name; 
  public:
    explicit prof(const char* tag) : name(tag)
    { if (profiler) profiler->start(name); }
    ~prof() { if (profiler) profiler->stop(name); }
  };
}
 
 
#ifdef HAS_TRACY
#define PROFILE(label) ZoneNamedN(_prof, #label, true)
#else
#define PROFILE(label) utl::prof _prof(label)
#endif
 
#if PROFILE_LEVEL >= 1
#define PROFILE1(label) PROFILE(label)
#else
#define PROFILE1(label)
#endif
 
#if PROFILE_LEVEL >= 2
#define PROFILE2(label) PROFILE(label)
#else
#define PROFILE2(label)
#endif
 
#if PROFILE_LEVEL >= 3
#define PROFILE3(label) PROFILE(label)
#else
#define PROFILE3(label)
#endif
 
#if PROFILE_LEVEL >= 4
#define PROFILE4(label) PROFILE(label)
#else
#define PROFILE4(label)
#endif
 
#endif