30#ifndef _GLIBCXX_THIS_THREAD_SLEEP_H
31#define _GLIBCXX_THIS_THREAD_SLEEP_H 1
33#pragma GCC system_header
35#if __cplusplus >= 201103L
38#ifdef _GLIBCXX_USE_NANOSLEEP
43namespace std _GLIBCXX_VISIBILITY(default)
45_GLIBCXX_BEGIN_NAMESPACE_VERSION
58#ifndef _GLIBCXX_NO_SLEEP
60#ifndef _GLIBCXX_USE_NANOSLEEP
66 template<
typename _Rep,
typename _Period>
70 if (__rtime <= __rtime.zero())
74#ifdef _GLIBCXX_USE_NANOSLEEP
75 struct ::timespec __ts =
77 static_cast<std::time_t
>(__s.count()),
78 static_cast<long>(__ns.count())
80 while (::nanosleep(&__ts, &__ts) == -1 && errno == EINTR)
83 __sleep_for(__s, __ns);
88 template<
typename _Clock,
typename _Duration>
92#if __cplusplus > 201703L
93 static_assert(chrono::is_clock_v<_Clock>);
95 auto __now = _Clock::now();
96 if (_Clock::is_steady)
102 while (__now < __atime)
105 __now = _Clock::now();
113_GLIBCXX_END_NAMESPACE_VERSION
duration< int64_t, nano > nanoseconds
nanoseconds
duration< int64_t > seconds
seconds
constexpr __enable_if_is_duration< _ToDur > duration_cast(const duration< _Rep, _Period > &__d)
ISO C++ entities toplevel namespace is std.
void sleep_until(const chrono::time_point< _Clock, _Duration > &__atime)
this_thread::sleep_until
void sleep_for(const chrono::duration< _Rep, _Period > &__rtime)
this_thread::sleep_for
chrono::duration represents a distance between two points in time
chrono::time_point represents a point in time as measured by a clock