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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 12:34:54 +0000 |
commit | 0915b3ef56dfac3113cce55a59a5765dc94976be (patch) | |
tree | a8fea11d50b4f083e1bf0f90025ece7f0824784a /lib/base/defer.hpp | |
parent | Initial commit. (diff) | |
download | icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.tar.xz icinga2-0915b3ef56dfac3113cce55a59a5765dc94976be.zip |
Adding upstream version 2.13.6.upstream/2.13.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/base/defer.hpp | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/lib/base/defer.hpp b/lib/base/defer.hpp new file mode 100644 index 0000000..2a23261 --- /dev/null +++ b/lib/base/defer.hpp @@ -0,0 +1,54 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#ifndef DEFER +#define DEFER + +#include <functional> +#include <utility> + +namespace icinga +{ + +/** + * An action to be executed at end of scope. + * + * @ingroup base + */ +class Defer +{ +public: + inline + Defer(std::function<void()> func) : m_Func(std::move(func)) + { + } + + Defer(const Defer&) = delete; + Defer(Defer&&) = delete; + Defer& operator=(const Defer&) = delete; + Defer& operator=(Defer&&) = delete; + + inline + ~Defer() + { + if (m_Func) { + try { + m_Func(); + } catch (...) { + // https://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor + } + } + } + + inline + void Cancel() + { + m_Func = nullptr; + } + +private: + std::function<void()> m_Func; +}; + +} + +#endif /* DEFER */ |