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-[/
- / Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- /
- / Distributed under the Boost Software License, Version 1.0. (See accompanying
- / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- /]
-
-[section:SignalHandler Signal handler requirements]
-
-A signal handler must meet the requirements for a [link
-asio.reference.Handler handler]. A value `h` of a signal handler class
-should work correctly in the expression `h(ec, n)`, where `ec` is an lvalue of
-type `const error_code` and `n` is an lvalue of type `const int`.
-
-[heading Examples]
-
-A free function as a signal handler:
-
- void signal_handler(
- const asio::error_code& ec,
- int signal_number)
- {
- ...
- }
-
-A signal handler function object:
-
- struct signal_handler
- {
- ...
- void operator()(
- const asio::error_code& ec,
- int signal_number)
- {
- ...
- }
- ...
- };
-
-A lambda as a signal handler:
-
- my_signal_set.async_wait(
- [](const asio::error_code& ec,
- int signal_number)
- {
- ...
- });
-
-A non-static class member function adapted to a signal handler using
-`std::bind()`:
-
- void my_class::signal_handler(
- const asio::error_code& ec,
- int signal_number)
- {
- ...
- }
- ...
- my_signal_set.async_wait(
- std::bind(&my_class::signal_handler,
- this, std::placeholders::_1,
- std::placeholders::_2));
-
-A non-static class member function adapted to a signal handler using
-`boost::bind()`:
-
- void my_class::signal_handler(
- const asio::error_code& ec,
- int signal_number)
- {
- ...
- }
- ...
- my_signal_set.async_wait(
- boost::bind(&my_class::signal_handler,
- this, asio::placeholders::error,
- asio::placeholders::signal_number));
-
-[endsect]