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 2013. The current version is 1.89.0.

io_service::io_service (2 of 2 overloads)

io_service::io_service (2 of 2 overloads)

Constructor.

io_service(
    std::size_t concurrency_hint);

Construct with a hint about the required level of concurrency.

Parameters

concurrency_hint: A suggestion to the implementation on how many threads it should allow to run simultaneously.