From e95946831f8ef53d29590735a2df661385edb008 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Mon, 6 Aug 2018 10:35:22 +0200
Subject: Replace boost by the standalone asio library

---
 lib/asio/detail/impl/pipe_select_interrupter.ipp | 124 +++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 lib/asio/detail/impl/pipe_select_interrupter.ipp

(limited to 'lib/asio/detail/impl/pipe_select_interrupter.ipp')

diff --git a/lib/asio/detail/impl/pipe_select_interrupter.ipp b/lib/asio/detail/impl/pipe_select_interrupter.ipp
new file mode 100644
index 0000000..13931ab
--- /dev/null
+++ b/lib/asio/detail/impl/pipe_select_interrupter.ipp
@@ -0,0 +1,124 @@
+//
+// detail/impl/pipe_select_interrupter.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2018 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_PIPE_SELECT_INTERRUPTER_IPP
+#define ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#if !defined(ASIO_WINDOWS_RUNTIME)
+#if !defined(ASIO_WINDOWS)
+#if !defined(__CYGWIN__)
+#if !defined(__SYMBIAN32__)
+#if !defined(ASIO_HAS_EVENTFD)
+
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include "asio/detail/pipe_select_interrupter.hpp"
+#include "asio/detail/socket_types.hpp"
+#include "asio/detail/throw_error.hpp"
+#include "asio/error.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace detail {
+
+pipe_select_interrupter::pipe_select_interrupter()
+{
+  open_descriptors();
+}
+
+void pipe_select_interrupter::open_descriptors()
+{
+  int pipe_fds[2];
+  if (pipe(pipe_fds) == 0)
+  {
+    read_descriptor_ = pipe_fds[0];
+    ::fcntl(read_descriptor_, F_SETFL, O_NONBLOCK);
+    write_descriptor_ = pipe_fds[1];
+    ::fcntl(write_descriptor_, F_SETFL, O_NONBLOCK);
+
+#if defined(FD_CLOEXEC)
+    ::fcntl(read_descriptor_, F_SETFD, FD_CLOEXEC);
+    ::fcntl(write_descriptor_, F_SETFD, FD_CLOEXEC);
+#endif // defined(FD_CLOEXEC)
+  }
+  else
+  {
+    asio::error_code ec(errno,
+        asio::error::get_system_category());
+    asio::detail::throw_error(ec, "pipe_select_interrupter");
+  }
+}
+
+pipe_select_interrupter::~pipe_select_interrupter()
+{
+  close_descriptors();
+}
+
+void pipe_select_interrupter::close_descriptors()
+{
+  if (read_descriptor_ != -1)
+    ::close(read_descriptor_);
+  if (write_descriptor_ != -1)
+    ::close(write_descriptor_);
+}
+
+void pipe_select_interrupter::recreate()
+{
+  close_descriptors();
+
+  write_descriptor_ = -1;
+  read_descriptor_ = -1;
+
+  open_descriptors();
+}
+
+void pipe_select_interrupter::interrupt()
+{
+  char byte = 0;
+  signed_size_type result = ::write(write_descriptor_, &byte, 1);
+  (void)result;
+}
+
+bool pipe_select_interrupter::reset()
+{
+  for (;;)
+  {
+    char data[1024];
+    signed_size_type bytes_read = ::read(read_descriptor_, data, sizeof(data));
+    if (bytes_read < 0 && errno == EINTR)
+      continue;
+    bool was_interrupted = (bytes_read > 0);
+    while (bytes_read == sizeof(data))
+      bytes_read = ::read(read_descriptor_, data, sizeof(data));
+    return was_interrupted;
+  }
+}
+
+} // namespace detail
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // !defined(ASIO_HAS_EVENTFD)
+#endif // !defined(__SYMBIAN32__)
+#endif // !defined(__CYGWIN__)
+#endif // !defined(ASIO_WINDOWS)
+#endif // !defined(ASIO_WINDOWS_RUNTIME)
+
+#endif // ASIO_DETAIL_IMPL_PIPE_SELECT_INTERRUPTER_IPP
-- 
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