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//===----------------------------------------------------------------------===////
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===////
#ifndef TIMER_H
#define TIMER_H
// Define LIBCXXABI_USE_TIMER to enable testing with a timer.
#if defined(LIBCXXABI_USE_TIMER)
#include <chrono>
#include <cstdio>
class timer
{
typedef std::chrono::high_resolution_clock Clock;
typedef Clock::time_point TimePoint;
typedef std::chrono::microseconds MicroSeconds;
public:
timer() : m_start(Clock::now()) {}
timer(timer const &) = delete;
timer & operator=(timer const &) = delete;
~timer()
{
using std::chrono::duration_cast;
TimePoint end = Clock::now();
MicroSeconds us = duration_cast<MicroSeconds>(end - m_start);
std::printf("%d microseconds\n", us.count());
}
private:
TimePoint m_start;
};
#else /* LIBCXXABI_USE_TIMER */
class timer
{
public:
timer() {}
timer(timer const &) = delete;
timer & operator=(timer const &) = delete;
~timer() {}
};
#endif /* LIBCXXABI_USE_TIMER */
#endif /* TIMER_H */
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