Implement QNX reactor based on QNX pulse communication

asio/include/asio/detail/config.hpp

@@ -892,6 +892,16 @@
 # endif // !defined(ASIO_HAS_DEV_POLL)
 #endif // defined(__sun)
 
+// QNX: ionotify.
+#if defined(__QNXNTO__)
+# if !defined(ASIO_HAS_IONOTIFY)
+#  if !defined(ASIO_DISABLE_IONOTIFY)
+#   define ASIO_HAS_IONOTIFY 1
+#   define ASIO_DISABLE_EPOLL
+#  endif // !defined(ASIO_DISABLE_IONOTIFY)
+# endif // !defined(ASIO_HAS_IONOTIFY)
+#endif // defined(__QNXNTO__)
+
 // Serial ports.
 #if !defined(ASIO_HAS_SERIAL_PORT)
 # if defined(ASIO_HAS_IOCP) \

asio/include/asio/detail/impl/ionotify_reactor.hpp

@@ -0,0 +1,111 @@
+// detail/impl/ionotify_reactor.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 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 ASIO_DETAIL_IMPL_IONOTIFY_REACTOR_HPP
+#define ASIO_DETAIL_IMPL_IONOTIFY_REACTOR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+#pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#if defined(ASIO_HAS_IONOTIFY)
+
+#include "asio/detail/scheduler.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace detail {
+
+inline void ionotify_reactor::post_immediate_completion(
+    operation* op, bool is_continuation) const
+{
+  scheduler_.post_immediate_completion(op, is_continuation);
+}
+
+template <typename Time_Traits>
+void ionotify_reactor::add_timer_queue(timer_queue<Time_Traits>& queue)
+{
+  do_add_timer_queue(queue);
+}
+
+// Remove a timer queue from the reactor.
+template <typename Time_Traits>
+void ionotify_reactor::remove_timer_queue(timer_queue<Time_Traits>& queue)
+{
+  do_remove_timer_queue(queue);
+}
+
+template <typename Time_Traits>
+void ionotify_reactor::schedule_timer(timer_queue<Time_Traits>& queue,
+    const typename Time_Traits::time_type& time,
+    typename timer_queue<Time_Traits>::per_timer_data& timer, wait_op* op)
+{
+  asio::detail::mutex::scoped_lock lock(mutex_);
+
+  if (shutdown_)
+  {
+    scheduler_.post_immediate_completion(op, false);
+    return;
+  }
+
+  bool earliest = queue.enqueue_timer(time, timer, op);
+  scheduler_.work_started();
+  if (earliest)
+    interrupt();
+}
+
+template <typename Time_Traits>
+std::size_t ionotify_reactor::cancel_timer(timer_queue<Time_Traits>& queue,
+    typename timer_queue<Time_Traits>::per_timer_data& timer,
+    std::size_t max_cancelled)
+{
+  asio::detail::mutex::scoped_lock lock(mutex_);
+  op_queue<operation> ops;
+  std::size_t n = queue.cancel_timer(timer, ops, max_cancelled);
+  lock.unlock();
+  scheduler_.post_deferred_completions(ops);
+  return n;
+}
+
+template <typename Time_Traits>
+void ionotify_reactor::cancel_timer_by_key(timer_queue<Time_Traits>& queue,
+    typename timer_queue<Time_Traits>::per_timer_data* timer,
+    void* cancellation_key)
+{
+  mutex::scoped_lock lock(mutex_);
+  op_queue<operation> ops;
+  queue.cancel_timer_by_key(timer, ops, cancellation_key);
+  lock.unlock();
+  scheduler_.post_deferred_completions(ops);
+}
+
+template <typename Time_Traits>
+void ionotify_reactor::move_timer(timer_queue<Time_Traits>& queue,
+    typename timer_queue<Time_Traits>::per_timer_data& target,
+    typename timer_queue<Time_Traits>::per_timer_data& source)
+{
+  asio::detail::mutex::scoped_lock lock(mutex_);
+  op_queue<operation> ops;
+  queue.cancel_timer(target, ops);
+  queue.move_timer(target, source);
+  lock.unlock();
+  scheduler_.post_deferred_completions(ops);
+}
+
+} // namespace detail
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // defined(ASIO_HAS_IONOTIFY)
+
+#endif // ASIO_DETAIL_IMPL_IONOTIFY_REACTOR_HPP