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-rw-r--r--3rdparty/asio/src/examples/cpp14/deferred/deferred_2.cpp45
1 files changed, 45 insertions, 0 deletions
diff --git a/3rdparty/asio/src/examples/cpp14/deferred/deferred_2.cpp b/3rdparty/asio/src/examples/cpp14/deferred/deferred_2.cpp
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index 00000000000..c33bbc2a5ed
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+++ b/3rdparty/asio/src/examples/cpp14/deferred/deferred_2.cpp
@@ -0,0 +1,45 @@
+//
+// deferred_2.cpp
+// ~~~~~~~~~~~~~~
+//
+// 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)
+//
+
+#include <asio.hpp>
+#include <asio/experimental/deferred.hpp>
+#include <iostream>
+
+using asio::experimental::deferred;
+
+int main()
+{
+ asio::io_context ctx;
+
+ asio::steady_timer timer(ctx);
+ timer.expires_after(std::chrono::seconds(1));
+
+ auto deferred_op = timer.async_wait(
+ deferred(
+ [&](std::error_code ec)
+ {
+ std::cout << "first timer wait finished: " << ec.message() << "\n";
+ timer.expires_after(std::chrono::seconds(1));
+ return timer.async_wait(deferred);
+ }
+ )
+ );
+
+ std::move(deferred_op)(
+ [](std::error_code ec)
+ {
+ std::cout << "second timer wait finished: " << ec.message() << "\n";
+ }
+ );
+
+ ctx.run();
+
+ return 0;
+}