94 lines
1.7 KiB
C
94 lines
1.7 KiB
C
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#ifndef PROFILER_H
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#define PROFILER_H
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#include <map>
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#include <vector>
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#include <ctime>
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#include <cgv/utils/stopwatch.h>
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#include <iostream>
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#include <string>
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namespace cgv {
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namespace utils{
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/**
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* A profiler class for managing different stopwatches.
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*
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* Example:
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*
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* Profiler<> p;
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*
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* p.prepare_counter("all");
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* p.prepare_counter("graphics");
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* p.prepare_counter("simulation");
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*
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* ...
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* while(not_stopped)
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* {
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* stopwatch sa(p.get_time_accu("all"));
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* {
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* stopwatch ss(p.get_time_accu("simulation"));
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* simulate();
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* }
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* {
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* stopwatch sr(p.get_time_accu("graphics"));
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* render();
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* }
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* }
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* ...
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* std::cout << p;
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*/
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template< typename T = std::string>
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class Profiler
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{
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std::map<T,double> counter_times;
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std::map<T,int> counter_calls;
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public:
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void prepare_counter(const T &handle)
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{
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counter_times[handle]=0.0;
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counter_calls[handle]=0;
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}
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inline double *get_time_accu(const T handle)
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{
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counter_calls[handle]++;
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return &(counter_times[handle]);
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}
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void zero_counters()
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{
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for(std::map<T,double>::iterator it = counter_times.begin();
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it != counter_times.end();it++)
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{
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it->second=0;
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counter_calls[it->first]=0;
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}
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}
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friend std::ostream& operator<< (std::ostream& out, Profiler p)
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{
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for(std::map<T,double>::iterator it = p.counter_times.begin();
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it != p.counter_times.end();it++)
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{
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out << it->first << ": "<< p.counter_calls[it->first] << " calls, "<<it->second << " sec, "
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<< it->second/p.counter_calls[it->first] << " sec/call (mean)"<< std::endl;
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}
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return out;
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}
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};
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}
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}
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#endif// PROFILER_H
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