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 2024. The current version is 1.90.0.

cancellation_signal::emit

Emits the signal and causes invocation of the slot's handler, if any.

void emit(
    cancellation_type_t type);