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| template <class Function>
class ScopeGuard {
private:
Function m_func;
bool m_dismiss{false};
public:
explicit ScopeGuard(Function func) : m_func(func), m_dismiss(false) {}
~ScopeGuard() {
if (!m_dismiss) m_func();
}
ScopeGuard() = delete;
ScopeGuard(const ScopeGuard&) = delete;
ScopeGuard& operator=(const ScopeGuard&) = delete;
void dismiss() { m_dismiss = true; }
ScopeGuard(ScopeGuard&& rhs) : m_func(std::move(rhs.m_func)), m_dismiss(rhs.m_dismiss) { rhs.dismiss(); }
};
template <class Fun>
ScopeGuard<Fun> MakeScopeGuard(Fun f) {
return ScopeGuard<Fun>(std::move(f));
}
|