81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
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// Copyright (c) 2020 Computer Vision Center (CVC) at the Universitat Autonoma
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// de Barcelona (UAB).
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//
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// This work is licensed under the terms of the MIT license.
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// For a copy, see <https://opensource.org/licenses/MIT>.
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#pragma once
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#include <chrono>
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#include <string>
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#include <unordered_map>
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namespace carla {
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namespace traffic_manager {
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namespace chr = std::chrono;
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using namespace chr;
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using TimePoint = chr::time_point<chr::system_clock, chr::nanoseconds>;
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// This class can be used to measure execution time, total call duration and number of calls
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// of any code snippet by assigning it a name.
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class SnippetProfiler {
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private:
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std::unordered_map<std::string, TimePoint> print_clocks;
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std::unordered_map<std::string, TimePoint> snippet_clocks;
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std::unordered_map<std::string, chr::duration<float>> snippet_durations;
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std::unordered_map<std::string, unsigned long> number_of_calls;
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public:
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SnippetProfiler(){};
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void MeasureExecutionTime(std::string snippet_name, bool begin_or_end) {
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TimePoint current_time = chr::system_clock::now();
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if (print_clocks.find(snippet_name) == print_clocks.end()) {
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print_clocks.insert({snippet_name, current_time});
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}
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if (snippet_clocks.find(snippet_name) == snippet_clocks.end()) {
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snippet_clocks.insert({snippet_name, current_time});
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}
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if (snippet_durations.find(snippet_name) == snippet_durations.end()) {
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snippet_durations.insert({snippet_name, chr::duration<float>()});
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}
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if (number_of_calls.find(snippet_name) == number_of_calls.end()) {
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number_of_calls.insert({snippet_name, 0u});
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}
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TimePoint &print_clock = print_clocks.at(snippet_name);
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TimePoint &snippet_clock = snippet_clocks.at(snippet_name);
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chr::duration<float> &snippet_duration = snippet_durations.at(snippet_name);
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unsigned long &call_count = number_of_calls.at(snippet_name);
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if (begin_or_end) {
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snippet_clock = current_time;
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} else {
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chr::duration<float> measured_duration = current_time - snippet_clock;
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snippet_duration += measured_duration;
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++call_count;
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}
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chr::duration<float> print_duration = current_time - print_clock;
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if (print_duration.count() > 1.0f) {
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call_count = call_count == 0u ? 1 : call_count;
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std::cout << "Snippet name : " << snippet_name << ", "
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<< "avg. duration : " << 1000 * snippet_duration.count() / call_count << " ms, "
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<< "total duration : " << snippet_duration.count() << " s, "
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<< "total calls : " << call_count << ", "
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<< std::endl;
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snippet_duration = 0s;
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call_count = 0u;
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print_clock = current_time;
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}
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}
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};
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} // namespace traffic_manager
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} // namespace carla
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