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Optimize final_act for general case where move is not called

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Treb Connell 2015-10-02 15:10:58 -07:00
parent df88352c1d
commit 52df7c35e6
1 changed files with 5 additions and 4 deletions
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9
include/gsl.h
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@ -78,17 +78,18 @@ template <class F>
class final_act class final_act
{ {
public: public:
explicit final_act(F f) noexcept : f_(std::move(f)), invoke_(true) {} explicit final_act(F f) noexcept : f_(std::move(f)) {}
final_act(final_act&& other) noexcept : f_(std::move(other.f_)), invoke_(true) { other.invoke_ = false; } final_act(final_act&& other) noexcept : f_(std::move(other.f_)) { other.f_ = NoAction; }
final_act(const final_act&) = delete; final_act(const final_act&) = delete;
final_act& operator=(const final_act&) = delete; final_act& operator=(const final_act&) = delete;
~final_act() noexcept { if (invoke_) f_(); } ~final_act() noexcept { f_(); }
private: private:
F f_; F f_;
bool invoke_;
static void NoAction(){}
}; };
// finally() - convenience function to generate a final_act // finally() - convenience function to generate a final_act