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1 //===-- Timer.cpp --------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "Timer.h"
10 
11 #include <chrono>
12 #include <fstream>
13 
14 namespace LIBC_NAMESPACE {
15 namespace testing {
16 
17 struct TimerImplementation {
18   std::chrono::high_resolution_clock::time_point Start;
19   std::chrono::high_resolution_clock::time_point End;
20 };
21 
Timer()22 Timer::Timer() : Impl(new TimerImplementation) {}
23 
~Timer()24 Timer::~Timer() { delete reinterpret_cast<TimerImplementation *>(Impl); }
25 
start()26 void Timer::start() {
27   auto T = reinterpret_cast<TimerImplementation *>(Impl);
28   T->Start = std::chrono::high_resolution_clock::now();
29 }
30 
stop()31 void Timer::stop() {
32   auto T = reinterpret_cast<TimerImplementation *>(Impl);
33   T->End = std::chrono::high_resolution_clock::now();
34 }
35 
nanoseconds() const36 uint64_t Timer::nanoseconds() const {
37   auto T = reinterpret_cast<TimerImplementation *>(Impl);
38   return std::chrono::nanoseconds(T->End - T->Start).count();
39 }
40 
41 } // namespace testing
42 } // namespace LIBC_NAMESPACE
43