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55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
/********************************************************************************
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* Copyright (C) 2021 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#ifndef FAIR_MQ_TOOLS_EXCEPTIONS_H
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#define FAIR_MQ_TOOLS_EXCEPTIONS_H
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#include <functional>
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namespace fair::mq::tools
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{
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/**
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* Executes the given callback in the destructor.
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* Can be used to execute something in case of an exception when catch is undesirable, e.g.:
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*
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* {
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* // callback will be executed only if f throws an exception
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* CallOnDestruction cod([](){ cout << "exception was thrown"; }, true);
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* f();
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* cod.disable();
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* }
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*/
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class CallOnDestruction
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{
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public:
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CallOnDestruction(std::function<void()> c, bool enable = true)
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: callback(c)
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, enabled(enable)
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{}
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~CallOnDestruction()
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{
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if (enabled) {
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callback();
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}
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}
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void enable() { enabled = true; }
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void disable() { enabled = false; }
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private:
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std::function<void()> callback;
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bool enabled;
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};
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} // namespace fair::mq::tools
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#endif /* FAIR_MQ_TOOLS_EXCEPTIONS_H */
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