Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is an older version of Boost and was released in 2022. The current version is 1.90.0.

buffered_stream::async_fill

buffered_stream::async_fill

Start an asynchronous fill.

template<
    typename ReadHandler = DEFAULT>
DEDUCED async_fill(
    ReadHandler && handler = DEFAULT);

Completion Signature

void(boost::system::error_code, std::size_t)