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std::this_thread::sleep_for

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Defined in header <thread>
template< class Rep, class Period >
void sleep_for( const std::chrono::duration<Rep, Period>& sleep_duration );
 (since C++11)

Blocks the execution of the current thread for at least the specified sleep_duration.

This function may block for longer than sleep_duration due to scheduling or resource contention delays.

The standard recommends that a steady clock is used to measure the duration. If an implementation uses a system clock instead, the wait time may also be sensitive to clock adjustments.

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