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f1a0314c53
optional_last_value, which does not throw, has replaced optional_value as boost's default combiner. Besides being better supported, it also doesn't trigger gcc's -Wmaybe-unitialized warning, presumably because exceptions no longer bubble-up out of signals: ```bash boost/signals2/last_value.hpp:54:36: warning: '*((void*)& value +1)' may be used uninitialized in this function [-Wmaybe-uninitialized] if(value) return value.get(); ``` The change in default happened in Boost 1.39.0 (along with the introduction of the signals 2 library. More information is available here: https://www.boost.org/doc/libs/1_73_0/doc/html/signals2/rationale.html#id-1.3.36.9.4 and here: https://www.boost.org/doc/libs/1_73_0/doc/html/boost/signals2/optional_last_value.html Co-authored-by: fanquake <fanquake@gmail.com>
65 lines
4 KiB
C++
65 lines
4 KiB
C++
// Copyright (c) 2010-2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <node/ui_interface.h>
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#include <util/translation.h>
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#include <boost/signals2/optional_last_value.hpp>
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#include <boost/signals2/signal.hpp>
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CClientUIInterface uiInterface;
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struct UISignals {
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boost::signals2::signal<CClientUIInterface::ThreadSafeMessageBoxSig, boost::signals2::optional_last_value<bool>> ThreadSafeMessageBox;
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boost::signals2::signal<CClientUIInterface::ThreadSafeQuestionSig, boost::signals2::optional_last_value<bool>> ThreadSafeQuestion;
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boost::signals2::signal<CClientUIInterface::InitMessageSig> InitMessage;
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boost::signals2::signal<CClientUIInterface::NotifyNumConnectionsChangedSig> NotifyNumConnectionsChanged;
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boost::signals2::signal<CClientUIInterface::NotifyNetworkActiveChangedSig> NotifyNetworkActiveChanged;
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boost::signals2::signal<CClientUIInterface::NotifyAlertChangedSig> NotifyAlertChanged;
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boost::signals2::signal<CClientUIInterface::ShowProgressSig> ShowProgress;
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boost::signals2::signal<CClientUIInterface::NotifyBlockTipSig> NotifyBlockTip;
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boost::signals2::signal<CClientUIInterface::NotifyHeaderTipSig> NotifyHeaderTip;
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boost::signals2::signal<CClientUIInterface::BannedListChangedSig> BannedListChanged;
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};
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static UISignals g_ui_signals;
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#define ADD_SIGNALS_IMPL_WRAPPER(signal_name) \
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boost::signals2::connection CClientUIInterface::signal_name##_connect(std::function<signal_name##Sig> fn) \
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{ \
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return g_ui_signals.signal_name.connect(fn); \
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}
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ADD_SIGNALS_IMPL_WRAPPER(ThreadSafeMessageBox);
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ADD_SIGNALS_IMPL_WRAPPER(ThreadSafeQuestion);
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ADD_SIGNALS_IMPL_WRAPPER(InitMessage);
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ADD_SIGNALS_IMPL_WRAPPER(NotifyNumConnectionsChanged);
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ADD_SIGNALS_IMPL_WRAPPER(NotifyNetworkActiveChanged);
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ADD_SIGNALS_IMPL_WRAPPER(NotifyAlertChanged);
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ADD_SIGNALS_IMPL_WRAPPER(ShowProgress);
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ADD_SIGNALS_IMPL_WRAPPER(NotifyBlockTip);
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ADD_SIGNALS_IMPL_WRAPPER(NotifyHeaderTip);
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ADD_SIGNALS_IMPL_WRAPPER(BannedListChanged);
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bool CClientUIInterface::ThreadSafeMessageBox(const bilingual_str& message, const std::string& caption, unsigned int style) { return g_ui_signals.ThreadSafeMessageBox(message, caption, style).value_or(false);}
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bool CClientUIInterface::ThreadSafeQuestion(const bilingual_str& message, const std::string& non_interactive_message, const std::string& caption, unsigned int style) { return g_ui_signals.ThreadSafeQuestion(message, non_interactive_message, caption, style).value_or(false);}
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void CClientUIInterface::InitMessage(const std::string& message) { return g_ui_signals.InitMessage(message); }
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void CClientUIInterface::NotifyNumConnectionsChanged(int newNumConnections) { return g_ui_signals.NotifyNumConnectionsChanged(newNumConnections); }
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void CClientUIInterface::NotifyNetworkActiveChanged(bool networkActive) { return g_ui_signals.NotifyNetworkActiveChanged(networkActive); }
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void CClientUIInterface::NotifyAlertChanged() { return g_ui_signals.NotifyAlertChanged(); }
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void CClientUIInterface::ShowProgress(const std::string& title, int nProgress, bool resume_possible) { return g_ui_signals.ShowProgress(title, nProgress, resume_possible); }
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void CClientUIInterface::NotifyBlockTip(SynchronizationState s, const CBlockIndex* i) { return g_ui_signals.NotifyBlockTip(s, i); }
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void CClientUIInterface::NotifyHeaderTip(SynchronizationState s, const CBlockIndex* i) { return g_ui_signals.NotifyHeaderTip(s, i); }
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void CClientUIInterface::BannedListChanged() { return g_ui_signals.BannedListChanged(); }
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bool InitError(const bilingual_str& str)
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{
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uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_ERROR);
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return false;
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}
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void InitWarning(const bilingual_str& str)
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{
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uiInterface.ThreadSafeMessageBox(str, "", CClientUIInterface::MSG_WARNING);
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}
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