asio C++ library

PrevUpHomeNext
waitable_timer_service::expires_from_now (2 of 2 overloads)

(Deprecated: Use expires_after().) Set the expiry time for the timer relative to now.

std::size_t expires_from_now(
    implementation_type & impl,
    const duration & expiry_time,
    asio::error_code & ec);

PrevUpHomeNext