utils::FastScopeGuard< Callback > Class Template Reference

#include <userver/utils/fast_scope_guard.hpp>

Detailed Description

template<typename Callback>
class utils::FastScopeGuard< Callback >

a helper class to perform actions on scope exit

The lambda argument must be explicitly marked as noexcept. Only use FastScopeGuard if it's proven that the lambda body is noexcept, otherwise use ScopeGuard.

Usage example:

    int x = 0;
    {
        utils::FastScopeGuard d([&]() noexcept { x = 1; });
        EXPECT_EQ(x, 0);
    }
    EXPECT_EQ(x, 1);

See also

ScopeGuard for type-erasure and throwing functor support

Examples

samples/tcp_full_duplex_service/main.cpp.

Definition at line 26 of file fast_scope_guard.hpp.

Public Member Functions
constexpr	FastScopeGuard (Callback callback) noexcept
constexpr	FastScopeGuard (FastScopeGuard &&other) noexcept
constexpr FastScopeGuard &	operator= (FastScopeGuard &&other) noexcept
constexpr void	Release () noexcept

Constructor & Destructor Documentation

FastScopeGuard() [1/2]

template<typename Callback>

utils::FastScopeGuard< Callback >::FastScopeGuard ( Callback callback )

inlineexplicitconstexprnoexcept

Definition at line 41 of file fast_scope_guard.hpp.

FastScopeGuard() [2/2]

template<typename Callback>

utils::FastScopeGuard< Callback >::FastScopeGuard ( FastScopeGuard< Callback > && other )

inlineconstexprnoexcept

Definition at line 43 of file fast_scope_guard.hpp.

~FastScopeGuard()

template<typename Callback>

utils::FastScopeGuard< Callback >::~FastScopeGuard ( )

inline

Definition at line 54 of file fast_scope_guard.hpp.

Member Function Documentation

operator=()

template<typename Callback>

FastScopeGuard & utils::FastScopeGuard< Callback >::operator= ( FastScopeGuard< Callback > && other )

inlineconstexprnoexcept

Definition at line 46 of file fast_scope_guard.hpp.

Release()

template<typename Callback>

void utils::FastScopeGuard< Callback >::Release ( )

inlineconstexprnoexcept

Definition at line 58 of file fast_scope_guard.hpp.

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The documentation for this class was generated from the following file:

• userver/utils/fast_scope_guard.hpp