6b875ef374
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@174902 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1009 B
C++
33 lines
1009 B
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
|
// Source Licenses. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// <thread>
|
|
|
|
// template <class Rep, class Period>
|
|
// void sleep_for(const chrono::duration<Rep, Period>& rel_time);
|
|
|
|
#include <thread>
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
|
|
int main()
|
|
{
|
|
typedef std::chrono::system_clock Clock;
|
|
typedef Clock::time_point time_point;
|
|
typedef Clock::duration duration;
|
|
std::chrono::milliseconds ms(500);
|
|
time_point t0 = Clock::now();
|
|
std::this_thread::sleep_for(ms);
|
|
time_point t1 = Clock::now();
|
|
std::chrono::nanoseconds ns = (t1 - t0) - ms;
|
|
std::chrono::nanoseconds err = 5 * ms / 100;
|
|
// The time slept is within 5% of 500ms
|
|
assert(std::abs(ns.count()) < err.count());
|
|
}
|