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#pragma once
#include <inttypes.h>
#if defined(_WIN32) || defined(WIN32)
#define NOMINMAX
#define WIN32_LEAN_AND_MEAN
#define VC_EXTRALEAN
#include <windows.h>
#elif defined(__AVR__)
#include <Arduino.h>
#else
#include <sys/time.h>
#endif
#define MILLIS_PER_SEC 1000ULL
#define MICROS_PER_SEC (MILLIS_PER_SEC*1000)
#define NANOS_PER_SEC (MICROS_PER_SEC*1000)
class timer {
private:
#if defined(LIBDIVIDE_WINDOWS)
LARGE_INTEGER counter_freq;
LARGE_INTEGER start_time;
LARGE_INTEGER end_time;
#elif defined(__AVR__)
uint64_t start_time;
uint64_t end_time;
#else
struct timeval start_time;
struct timeval end_time;
#endif
public:
timer() {
#if defined(LIBDIVIDE_WINDOWS)
QueryPerformanceFrequency(&counter_freq);
#endif
}
void start() {
#if defined(LIBDIVIDE_WINDOWS)
QueryPerformanceCounter(&start_time);
#elif defined(__AVR__)
start_time = micros();
#else
gettimeofday(&start_time, NULL);
#endif
}
void stop() {
#if defined(LIBDIVIDE_WINDOWS)
QueryPerformanceCounter(&end_time);
#elif defined(__AVR__)
end_time = micros();
#else
gettimeofday(&end_time, NULL);
#endif
}
uint64_t duration_nano() {
#if defined(LIBDIVIDE_WINDOWS)
LARGE_INTEGER elapsed;
elapsed.QuadPart = end_time.QuadPart - start_time.QuadPart;
return (uint64_t)((elapsed.QuadPart * NANOS_PER_SEC) / counter_freq.QuadPart);
#elif defined(__AVR__)
return (uint64_t)((end_time-start_time) * (NANOS_PER_SEC/MICROS_PER_SEC));
#else
return (uint64_t)(((end_time.tv_sec - start_time.tv_sec) * NANOS_PER_SEC) + ((end_time.tv_usec - start_time.tv_usec) * MICROS_PER_SEC));
#endif
}
};
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