Profiler.h

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/*
Open Asset Import Library (assimp)
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  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
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  derived from this software without specific prior
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*/
 
#pragma once
#ifndef AI_INCLUDED_PROFILER_H
#define AI_INCLUDED_PROFILER_H
 
#ifdef __GNUC__
#   pragma GCC system_header
#endif
 
#include <chrono>
#include <assimp/DefaultLogger.hpp>
#include <assimp/TinyFormatter.h>
 
#include <map>
 
namespace Assimp {
namespace Profiling {
 
using namespace Formatter;
 
// ------------------------------------------------------------------------------------------------
class Profiler {
public:
    Profiler() {
        // empty
    }
 
 
    void BeginRegion(const std::string& region) {
        regions[region] = std::chrono::system_clock::now();
        ASSIMP_LOG_DEBUG((format("START `"),region,"`"));
    }
 
 
    void EndRegion(const std::string& region) {
        RegionMap::const_iterator it = regions.find(region);
        if (it == regions.end()) {
            return;
        }
 
        std::chrono::duration<double> elapsedSeconds = std::chrono::system_clock::now() - regions[region];
        ASSIMP_LOG_DEBUG((format("END   `"),region,"`, dt= ", elapsedSeconds.count()," s"));
    }
 
private:
    typedef std::map<std::string,std::chrono::time_point<std::chrono::system_clock>> RegionMap;
    RegionMap regions;
};
 
}
}
 
#endif // AI_INCLUDED_PROFILER_H