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
Determine whether
the io_context
object has been stopped.
bool stopped() const;
This function is used to determine whether an io_context object has been stopped,
either through an explicit call to stop(),
or due to running out of work. When an io_context object is stopped,
calls to run(),
run_one(), poll()
or poll_one()
will return immediately without invoking any handlers.
true if the io_context object is stopped,
otherwise false.