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-rw-r--r--3rdparty/asio/include/asio/detail/null_event.hpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/3rdparty/asio/include/asio/detail/null_event.hpp b/3rdparty/asio/include/asio/detail/null_event.hpp
index 465a701123b..5bff3c46afe 100644
--- a/3rdparty/asio/include/asio/detail/null_event.hpp
+++ b/3rdparty/asio/include/asio/detail/null_event.hpp
@@ -2,7 +2,7 @@
// detail/null_event.hpp
// ~~~~~~~~~~~~~~~~~~~~~
//
-// Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+// 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)
@@ -55,6 +55,12 @@ public:
{
}
+ // Unlock the mutex and signal one waiter who may destroy us.
+ template <typename Lock>
+ void unlock_and_signal_one_for_destruction(Lock&)
+ {
+ }
+
// If there's a waiter, unlock the mutex and signal it.
template <typename Lock>
bool maybe_unlock_and_signal_one(Lock&)