419347ba4a
* Improve testing of memcpy including adding perf test. * Change remaining_bytes to be branch free. Use reciprocal division followed by multiply to remove a branch.
44 lines
906 B
C++
44 lines
906 B
C++
#pragma once
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#include <chrono>
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#include <iomanip>
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#include <iostream>
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#include <sstream>
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class MeasureTime
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{
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std::stringstream ss;
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std::chrono::time_point<std::chrono::high_resolution_clock> start =
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std::chrono::high_resolution_clock::now();
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bool quiet = false;
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public:
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~MeasureTime()
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{
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auto finish = std::chrono::high_resolution_clock::now();
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auto diff = finish - start;
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if (!quiet)
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{
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std::cout << ss.str() << ": " << std::setw(12) << diff.count() << " ns"
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<< std::endl;
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}
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}
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MeasureTime(bool quiet = false) : quiet(quiet) {}
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template<typename T>
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MeasureTime& operator<<(const T& s)
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{
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ss << s;
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start = std::chrono::high_resolution_clock::now();
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return *this;
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}
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std::chrono::nanoseconds get_time()
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{
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auto finish = std::chrono::high_resolution_clock::now();
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auto diff = finish - start;
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return diff;
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}
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}; |