Bitcoin Core  21.99.0
P2P Digital Currency
handler.cpp
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1 // Copyright (c) 2018-2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <interfaces/handler.h>
6 
7 
8 #include <boost/signals2/connection.hpp>
9 #include <utility>
10 
11 namespace interfaces {
12 namespace {
13 
14 class HandlerImpl : public Handler
15 {
16 public:
17  explicit HandlerImpl(boost::signals2::connection connection) : m_connection(std::move(connection)) {}
18 
19  void disconnect() override { m_connection.disconnect(); }
20 
21  boost::signals2::scoped_connection m_connection;
22 };
23 
24 class CleanupHandler : public Handler
25 {
26 public:
27  explicit CleanupHandler(std::function<void()> cleanup) : m_cleanup(std::move(cleanup)) {}
28  ~CleanupHandler() override { if (!m_cleanup) return; m_cleanup(); m_cleanup = nullptr; }
29  void disconnect() override { if (!m_cleanup) return; m_cleanup(); m_cleanup = nullptr; }
30  std::function<void()> m_cleanup;
31 };
32 
33 } // namespace
34 
35 std::unique_ptr<Handler> MakeHandler(boost::signals2::connection connection)
36 {
37  return std::make_unique<HandlerImpl>(std::move(connection));
38 }
39 
40 std::unique_ptr<Handler> MakeHandler(std::function<void()> cleanup)
41 {
42  return std::make_unique<CleanupHandler>(std::move(cleanup));
43 }
44 
45 } // namespace interfaces
interfaces
Definition: dummywallet.cpp:10
m_cleanup
std::function< void()> m_cleanup
Definition: handler.cpp:30
handler.h
m_connection
boost::signals2::scoped_connection m_connection
Definition: handler.cpp:21
interfaces::MakeHandler
std::unique_ptr< Handler > MakeHandler(boost::signals2::connection connection)
Return handler wrapping a boost signal connection.
Definition: handler.cpp:35