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/usr/include/boost/asio

Name	Size	Mode	Actions
detail/	-	0755	rm
execution/	-	0755	rm
generic/	-	0755	rm
impl/	-	0755	rm
ip/	-	0755	rm
local/	-	0755	rm
posix/	-	0755	rm
ssl/	-	0755	rm
traits/	-	0755	rm
ts/	-	0755	rm
windows/	-	0755	rm
any_io_executor.hpp	2625	0644	edit dl rm
associated_allocator.hpp	3791	0644	edit dl rm
associated_executor.hpp	5057	0644	edit dl rm
async_result.hpp	19423	0644	edit dl rm
awaitable.hpp	3270	0644	edit dl rm
basic_datagram_socket.hpp	47521	0644	edit dl rm
basic_deadline_timer.hpp	24158	0644	edit dl rm
basic_io_object.hpp	8096	0644	edit dl rm
basic_raw_socket.hpp	46996	0644	edit dl rm
basic_seq_packet_socket.hpp	29184	0644	edit dl rm
basic_serial_port.hpp	31912	0644	edit dl rm
basic_signal_set.hpp	19876	0644	edit dl rm
basic_socket.hpp	65516	0644	edit dl rm
basic_socket_acceptor.hpp	88062	0644	edit dl rm
basic_socket_iostream.hpp	13298	0644	edit dl rm
basic_socket_streambuf.hpp	21713	0644	edit dl rm
basic_streambuf.hpp	13714	0644	edit dl rm
basic_streambuf_fwd.hpp	920	0644	edit dl rm
basic_stream_socket.hpp	41520	0644	edit dl rm
basic_waitable_timer.hpp	28528	0644	edit dl rm
bind_executor.hpp	16510	0644	edit dl rm
buffer.hpp	83254	0644	edit dl rm
buffered_read_stream.hpp	8424	0644	edit dl rm
buffered_read_stream_fwd.hpp	699	0644	edit dl rm
buffered_stream.hpp	9074	0644	edit dl rm
buffered_stream_fwd.hpp	669	0644	edit dl rm
buffered_write_stream.hpp	8042	0644	edit dl rm
buffered_write_stream_fwd.hpp	705	0644	edit dl rm
buffers_iterator.hpp	14049	0644	edit dl rm
completion_condition.hpp	5500	0644	edit dl rm
compose.hpp	4596	0644	edit dl rm
connect.hpp	43157	0644	edit dl rm
coroutine.hpp	9897	0644	edit dl rm
co_spawn.hpp	14509	0644	edit dl rm
deadline_timer.hpp	1138	0644	edit dl rm
defer.hpp	5070	0644	edit dl rm
detached.hpp	3517	0644	edit dl rm
dispatch.hpp	4537	0644	edit dl rm
error.hpp	10351	0644	edit dl rm
execution.hpp	1871	0644	edit dl rm
execution_context.hpp	14341	0644	edit dl rm
executor.hpp	10467	0644	edit dl rm
executor_work_guard.hpp	8039	0644	edit dl rm
handler_alloc_hook.hpp	3471	0644	edit dl rm
handler_continuation_hook.hpp	1474	0644	edit dl rm
handler_invoke_hook.hpp	3744	0644	edit dl rm
high_resolution_timer.hpp	1394	0644	edit dl rm
io_context.hpp	55226	0644	edit dl rm
io_context_strand.hpp	13706	0644	edit dl rm
io_service.hpp	861	0644	edit dl rm
io_service_strand.hpp	575	0644	edit dl rm
is_applicable_property.hpp	1605	0644	edit dl rm
is_executor.hpp	1306	0644	edit dl rm
is_read_buffered.hpp	1646	0644	edit dl rm
is_write_buffered.hpp	1667	0644	edit dl rm
multiple_exceptions.hpp	1631	0644	edit dl rm
packaged_task.hpp	3358	0644	edit dl rm
placeholders.hpp	4146	0644	edit dl rm
post.hpp	4760	0644	edit dl rm
prefer.hpp	18821	0644	edit dl rm
query.hpp	8323	0644	edit dl rm
read.hpp	53894	0644	edit dl rm
read_at.hpp	27766	0644	edit dl rm
read_until.hpp	119477	0644	edit dl rm
redirect_error.hpp	1938	0644	edit dl rm
require.hpp	14926	0644	edit dl rm
require_concept.hpp	9218	0644	edit dl rm
serial_port.hpp	1010	0644	edit dl rm
serial_port_base.hpp	4975	0644	edit dl rm
signal_set.hpp	748	0644	edit dl rm
socket_base.hpp	15939	0644	edit dl rm
spawn.hpp	11793	0644	edit dl rm
ssl.hpp	848	0644	edit dl rm
static_thread_pool.hpp	826	0644	edit dl rm
steady_timer.hpp	1306	0644	edit dl rm
strand.hpp	17193	0644	edit dl rm
streambuf.hpp	826	0644	edit dl rm
system_context.hpp	2649	0644	edit dl rm
system_executor.hpp	22529	0644	edit dl rm
system_timer.hpp	1306	0644	edit dl rm
this_coro.hpp	1149	0644	edit dl rm
thread_pool.hpp	37567	0644	edit dl rm
time_traits.hpp	2281	0644	edit dl rm
unyield.hpp	381	0644	edit dl rm
uses_executor.hpp	2348	0644	edit dl rm
use_awaitable.hpp	5821	0644	edit dl rm
use_future.hpp	4820	0644	edit dl rm
version.hpp	686	0644	edit dl rm
wait_traits.hpp	1451	0644	edit dl rm
write.hpp	52959	0644	edit dl rm
write_at.hpp	29514	0644	edit dl rm
yield.hpp	482	0644	edit dl rm

Edit: /usr/include/boost/asio/basic_signal_set.hpp (19876B)

//
// basic_signal_set.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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)
//

#ifndef BOOST_ASIO_BASIC_SIGNAL_SET_HPP
#define BOOST_ASIO_BASIC_SIGNAL_SET_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include <boost/asio/detail/config.hpp>

#include <boost/asio/any_io_executor.hpp>
#include <boost/asio/async_result.hpp>
#include <boost/asio/detail/handler_type_requirements.hpp>
#include <boost/asio/detail/io_object_impl.hpp>
#include <boost/asio/detail/non_const_lvalue.hpp>
#include <boost/asio/detail/signal_set_service.hpp>
#include <boost/asio/detail/throw_error.hpp>
#include <boost/asio/detail/type_traits.hpp>
#include <boost/asio/error.hpp>
#include <boost/asio/execution_context.hpp>

namespace boost {
namespace asio {

/// Provides signal functionality.
/**
 * The basic_signal_set class provides the ability to perform an asynchronous
 * wait for one or more signals to occur.
 *
 * @par Thread Safety
 * @e Distinct @e objects: Safe.@n
 * @e Shared @e objects: Unsafe.
 *
 * @par Example
 * Performing an asynchronous wait:
 * @code
 * void handler(
 *     const boost::system::error_code& error,
 *     int signal_number)
 * {
 *   if (!error)
 *   {
 *     // A signal occurred.
 *   }
 * }
 *
 * ...
 *
 * // Construct a signal set registered for process termination.
 * boost::asio::signal_set signals(my_context, SIGINT, SIGTERM);
 *
 * // Start an asynchronous wait for one of the signals to occur.
 * signals.async_wait(handler);
 * @endcode
 *
 * @par Queueing of signal notifications
 *
 * If a signal is registered with a signal_set, and the signal occurs when
 * there are no waiting handlers, then the signal notification is queued. The
 * next async_wait operation on that signal_set will dequeue the notification.
 * If multiple notifications are queued, subsequent async_wait operations
 * dequeue them one at a time. Signal notifications are dequeued in order of
 * ascending signal number.
 *
 * If a signal number is removed from a signal_set (using the @c remove or @c
 * erase member functions) then any queued notifications for that signal are
 * discarded.
 *
 * @par Multiple registration of signals
 *
 * The same signal number may be registered with different signal_set objects.
 * When the signal occurs, one handler is called for each signal_set object.
 *
 * Note that multiple registration only works for signals that are registered
 * using Asio. The application must not also register a signal handler using
 * functions such as @c signal() or @c sigaction().
 *
 * @par Signal masking on POSIX platforms
 *
 * POSIX allows signals to be blocked using functions such as @c sigprocmask()
 * and @c pthread_sigmask(). For signals to be delivered, programs must ensure
 * that any signals registered using signal_set objects are unblocked in at
 * least one thread.
 */
template <typename Executor = any_io_executor>
class basic_signal_set
{
public:
  /// The type of the executor associated with the object.
  typedef Executor executor_type;

/// Rebinds the signal set type to another executor.
  template <typename Executor1>
  struct rebind_executor
  {
    /// The signal set type when rebound to the specified executor.
    typedef basic_signal_set<Executor1> other;
  };

/// Construct a signal set without adding any signals.
  /**
   * This constructor creates a signal set without registering for any signals.
   *
   * @param ex The I/O executor that the signal set will use, by default, to
   * dispatch handlers for any asynchronous operations performed on the
   * signal set.
   */
  explicit basic_signal_set(const executor_type& ex)
    : impl_(ex)
  {
  }

/// Construct a signal set without adding any signals.
  /**
   * This constructor creates a signal set without registering for any signals.
   *
   * @param context An execution context which provides the I/O executor that
   * the signal set will use, by default, to dispatch handlers for any
   * asynchronous operations performed on the signal set.
   */
  template <typename ExecutionContext>
  explicit basic_signal_set(ExecutionContext& context,
      typename enable_if<
        is_convertible<ExecutionContext&, execution_context&>::value
      >::type* = 0)
    : impl_(context)
  {
  }

/// Construct a signal set and add one signal.
  /**
   * This constructor creates a signal set and registers for one signal.
   *
   * @param ex The I/O executor that the signal set will use, by default, to
   * dispatch handlers for any asynchronous operations performed on the
   * signal set.
   *
   * @param signal_number_1 The signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(ex);
   * signals.add(signal_number_1); @endcode
   */
  basic_signal_set(const executor_type& ex, int signal_number_1)
    : impl_(ex)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Construct a signal set and add one signal.
  /**
   * This constructor creates a signal set and registers for one signal.
   *
   * @param context An execution context which provides the I/O executor that
   * the signal set will use, by default, to dispatch handlers for any
   * asynchronous operations performed on the signal set.
   *
   * @param signal_number_1 The signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(context);
   * signals.add(signal_number_1); @endcode
   */
  template <typename ExecutionContext>
  basic_signal_set(ExecutionContext& context, int signal_number_1,
      typename enable_if<
        is_convertible<ExecutionContext&, execution_context&>::value
      >::type* = 0)
    : impl_(context)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Construct a signal set and add two signals.
  /**
   * This constructor creates a signal set and registers for two signals.
   *
   * @param ex The I/O executor that the signal set will use, by default, to
   * dispatch handlers for any asynchronous operations performed on the
   * signal set.
   *
   * @param signal_number_1 The first signal number to be added.
   *
   * @param signal_number_2 The second signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(ex);
   * signals.add(signal_number_1);
   * signals.add(signal_number_2); @endcode
   */
  basic_signal_set(const executor_type& ex, int signal_number_1,
      int signal_number_2)
    : impl_(ex)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_2, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Construct a signal set and add two signals.
  /**
   * This constructor creates a signal set and registers for two signals.
   *
   * @param context An execution context which provides the I/O executor that
   * the signal set will use, by default, to dispatch handlers for any
   * asynchronous operations performed on the signal set.
   *
   * @param signal_number_1 The first signal number to be added.
   *
   * @param signal_number_2 The second signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(context);
   * signals.add(signal_number_1);
   * signals.add(signal_number_2); @endcode
   */
  template <typename ExecutionContext>
  basic_signal_set(ExecutionContext& context, int signal_number_1,
      int signal_number_2,
      typename enable_if<
        is_convertible<ExecutionContext&, execution_context&>::value
      >::type* = 0)
    : impl_(context)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_2, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Construct a signal set and add three signals.
  /**
   * This constructor creates a signal set and registers for three signals.
   *
   * @param ex The I/O executor that the signal set will use, by default, to
   * dispatch handlers for any asynchronous operations performed on the
   * signal set.
   *
   * @param signal_number_1 The first signal number to be added.
   *
   * @param signal_number_2 The second signal number to be added.
   *
   * @param signal_number_3 The third signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(ex);
   * signals.add(signal_number_1);
   * signals.add(signal_number_2);
   * signals.add(signal_number_3); @endcode
   */
  basic_signal_set(const executor_type& ex, int signal_number_1,
      int signal_number_2, int signal_number_3)
    : impl_(ex)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_2, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_3, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Construct a signal set and add three signals.
  /**
   * This constructor creates a signal set and registers for three signals.
   *
   * @param context An execution context which provides the I/O executor that
   * the signal set will use, by default, to dispatch handlers for any
   * asynchronous operations performed on the signal set.
   *
   * @param signal_number_1 The first signal number to be added.
   *
   * @param signal_number_2 The second signal number to be added.
   *
   * @param signal_number_3 The third signal number to be added.
   *
   * @note This constructor is equivalent to performing:
   * @code boost::asio::signal_set signals(context);
   * signals.add(signal_number_1);
   * signals.add(signal_number_2);
   * signals.add(signal_number_3); @endcode
   */
  template <typename ExecutionContext>
  basic_signal_set(ExecutionContext& context, int signal_number_1,
      int signal_number_2, int signal_number_3,
      typename enable_if<
        is_convertible<ExecutionContext&, execution_context&>::value
      >::type* = 0)
    : impl_(context)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number_1, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_2, ec);
    boost::asio::detail::throw_error(ec, "add");
    impl_.get_service().add(impl_.get_implementation(), signal_number_3, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Destroys the signal set.
  /**
   * This function destroys the signal set, cancelling any outstanding
   * asynchronous wait operations associated with the signal set as if by
   * calling @c cancel.
   */
  ~basic_signal_set()
  {
  }

/// Get the executor associated with the object.
  executor_type get_executor() BOOST_ASIO_NOEXCEPT
  {
    return impl_.get_executor();
  }

/// Add a signal to a signal_set.
  /**
   * This function adds the specified signal to the set. It has no effect if the
   * signal is already in the set.
   *
   * @param signal_number The signal to be added to the set.
   *
   * @throws boost::system::system_error Thrown on failure.
   */
  void add(int signal_number)
  {
    boost::system::error_code ec;
    impl_.get_service().add(impl_.get_implementation(), signal_number, ec);
    boost::asio::detail::throw_error(ec, "add");
  }

/// Add a signal to a signal_set.
  /**
   * This function adds the specified signal to the set. It has no effect if the
   * signal is already in the set.
   *
   * @param signal_number The signal to be added to the set.
   *
   * @param ec Set to indicate what error occurred, if any.
   */
  BOOST_ASIO_SYNC_OP_VOID add(int signal_number,
      boost::system::error_code& ec)
  {
    impl_.get_service().add(impl_.get_implementation(), signal_number, ec);
    BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
  }

/// Remove a signal from a signal_set.
  /**
   * This function removes the specified signal from the set. It has no effect
   * if the signal is not in the set.
   *
   * @param signal_number The signal to be removed from the set.
   *
   * @throws boost::system::system_error Thrown on failure.
   *
   * @note Removes any notifications that have been queued for the specified
   * signal number.
   */
  void remove(int signal_number)
  {
    boost::system::error_code ec;
    impl_.get_service().remove(impl_.get_implementation(), signal_number, ec);
    boost::asio::detail::throw_error(ec, "remove");
  }

/// Remove a signal from a signal_set.
  /**
   * This function removes the specified signal from the set. It has no effect
   * if the signal is not in the set.
   *
   * @param signal_number The signal to be removed from the set.
   *
   * @param ec Set to indicate what error occurred, if any.
   *
   * @note Removes any notifications that have been queued for the specified
   * signal number.
   */
  BOOST_ASIO_SYNC_OP_VOID remove(int signal_number,
      boost::system::error_code& ec)
  {
    impl_.get_service().remove(impl_.get_implementation(), signal_number, ec);
    BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
  }

/// Remove all signals from a signal_set.
  /**
   * This function removes all signals from the set. It has no effect if the set
   * is already empty.
   *
   * @throws boost::system::system_error Thrown on failure.
   *
   * @note Removes all queued notifications.
   */
  void clear()
  {
    boost::system::error_code ec;
    impl_.get_service().clear(impl_.get_implementation(), ec);
    boost::asio::detail::throw_error(ec, "clear");
  }

/// Remove all signals from a signal_set.
  /**
   * This function removes all signals from the set. It has no effect if the set
   * is already empty.
   *
   * @param ec Set to indicate what error occurred, if any.
   *
   * @note Removes all queued notifications.
   */
  BOOST_ASIO_SYNC_OP_VOID clear(boost::system::error_code& ec)
  {
    impl_.get_service().clear(impl_.get_implementation(), ec);
    BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
  }

/// Cancel all operations associated with the signal set.
  /**
   * This function forces the completion of any pending asynchronous wait
   * operations against the signal set. The handler for each cancelled
   * operation will be invoked with the boost::asio::error::operation_aborted
   * error code.
   *
   * Cancellation does not alter the set of registered signals.
   *
   * @throws boost::system::system_error Thrown on failure.
   *
   * @note If a registered signal occurred before cancel() is called, then the
   * handlers for asynchronous wait operations will:
   *
   * @li have already been invoked; or
   *
   * @li have been queued for invocation in the near future.
   *
   * These handlers can no longer be cancelled, and therefore are passed an
   * error code that indicates the successful completion of the wait operation.
   */
  void cancel()
  {
    boost::system::error_code ec;
    impl_.get_service().cancel(impl_.get_implementation(), ec);
    boost::asio::detail::throw_error(ec, "cancel");
  }

/// Cancel all operations associated with the signal set.
  /**
   * This function forces the completion of any pending asynchronous wait
   * operations against the signal set. The handler for each cancelled
   * operation will be invoked with the boost::asio::error::operation_aborted
   * error code.
   *
   * Cancellation does not alter the set of registered signals.
   *
   * @param ec Set to indicate what error occurred, if any.
   *
   * @note If a registered signal occurred before cancel() is called, then the
   * handlers for asynchronous wait operations will:
   *
   * @li have already been invoked; or
   *
   * @li have been queued for invocation in the near future.
   *
   * These handlers can no longer be cancelled, and therefore are passed an
   * error code that indicates the successful completion of the wait operation.
   */
  BOOST_ASIO_SYNC_OP_VOID cancel(boost::system::error_code& ec)
  {
    impl_.get_service().cancel(impl_.get_implementation(), ec);
    BOOST_ASIO_SYNC_OP_VOID_RETURN(ec);
  }

/// Start an asynchronous operation to wait for a signal to be delivered.
  /**
   * This function may be used to initiate an asynchronous wait against the
   * signal set. It always returns immediately.
   *
   * For each call to async_wait(), the supplied handler will be called exactly
   * once. The handler will be called when:
   *
   * @li One of the registered signals in the signal set occurs; or
   *
   * @li The signal set was cancelled, in which case the handler is passed the
   * error code boost::asio::error::operation_aborted.
   *
   * @param handler The handler to be called when the signal occurs. Copies
   * will be made of the handler as required. The function signature of the
   * handler must be:
   * @code void handler(
   *   const boost::system::error_code& error, // Result of operation.
   *   int signal_number // Indicates which signal occurred.
   * ); @endcode
   * Regardless of whether the asynchronous operation completes immediately or
   * not, the handler will not be invoked from within this function. On
   * immediate completion, invocation of the handler will be performed in a
   * manner equivalent to using boost::asio::post().
   */
  template <
    BOOST_ASIO_COMPLETION_TOKEN_FOR(void (boost::system::error_code, int))
      SignalHandler BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_TYPE(executor_type)>
  BOOST_ASIO_INITFN_AUTO_RESULT_TYPE(SignalHandler,
      void (boost::system::error_code, int))
  async_wait(
      BOOST_ASIO_MOVE_ARG(SignalHandler) handler
        BOOST_ASIO_DEFAULT_COMPLETION_TOKEN(executor_type))
  {
    return async_initiate<SignalHandler, void (boost::system::error_code, int)>(
        initiate_async_wait(this), handler);
  }

private:
  // Disallow copying and assignment.
  basic_signal_set(const basic_signal_set&) BOOST_ASIO_DELETED;
  basic_signal_set& operator=(const basic_signal_set&) BOOST_ASIO_DELETED;

class initiate_async_wait
  {
  public:
    typedef Executor executor_type;

explicit initiate_async_wait(basic_signal_set* self)
      : self_(self)
    {
    }

executor_type get_executor() const BOOST_ASIO_NOEXCEPT
    {
      return self_->get_executor();
    }

template <typename SignalHandler>
    void operator()(BOOST_ASIO_MOVE_ARG(SignalHandler) handler) const
    {
      // If you get an error on the following line it means that your handler
      // does not meet the documented type requirements for a SignalHandler.
      BOOST_ASIO_SIGNAL_HANDLER_CHECK(SignalHandler, handler) type_check;

detail::non_const_lvalue<SignalHandler> handler2(handler);
      self_->impl_.get_service().async_wait(
          self_->impl_.get_implementation(),
          handler2.value, self_->impl_.get_executor());
    }

private:
    basic_signal_set* self_;
  };

detail::io_object_impl<detail::signal_set_service, Executor> impl_;
};

} // namespace asio
} // namespace boost

#endif // BOOST_ASIO_BASIC_SIGNAL_SET_HPP

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