mirror of
https://github.com/zebrajr/pytorch.git
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28dba2f928
Summary:
TSIA. Right now we should basically use C10_EXPORT and C10_IMPORT for explicitly marking dllexport and dllimport, as a continued effort of the C10 unification.
This is a codemod by mechanically doing the following change:
CAFFE2_{EXPORT,IMPORT} -> C10_{EXPORT,IMPORT}
AT_CORE_{EXPORT,IMPORT} -> C10_{EXPORT,IMPORT}
Pull Request resolved: https://github.com/pytorch/pytorch/pull/12019
Reviewed By: ezyang, teng-li
Differential Revision: D10016276
Pulled By: Yangqing
fbshipit-source-id: a420d62c43d1110105fc88f9e9076e28a3203164
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
#ifndef CAFFE2_CORE_TIMER_H_
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#define CAFFE2_CORE_TIMER_H_
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#include <chrono>
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#include "caffe2/core/common.h"
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namespace caffe2 {
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/**
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* @brief A simple timer object for measuring time.
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*
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* This is a minimal class around a std::chrono::high_resolution_clock that
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* serves as a utility class for testing code.
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*/
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class Timer {
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public:
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typedef std::chrono::high_resolution_clock clock;
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typedef std::chrono::nanoseconds ns;
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Timer() { Start(); }
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/**
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* @brief Starts a timer.
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*/
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inline void Start() { start_time_ = clock::now(); }
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inline float NanoSeconds() {
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return static_cast<float>(
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std::chrono::duration_cast<ns>(clock::now() - start_time_).count());
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}
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/**
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* @brief Returns the elapsed time in milliseconds.
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*/
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inline float MilliSeconds() { return NanoSeconds() / 1000000.f; }
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/**
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* @brief Returns the elapsed time in microseconds.
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*/
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inline float MicroSeconds() { return NanoSeconds() / 1000.f; }
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/**
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* @brief Returns the elapsed time in seconds.
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*/
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inline float Seconds() { return NanoSeconds() / 1000000000.f; }
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protected:
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std::chrono::time_point<clock> start_time_;
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C10_DISABLE_COPY_AND_ASSIGN(Timer);
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};
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}
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#endif // CAFFE2_CORE_TIMER_H_
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