| 1 | ///////////////////////////////////////////////////////////////////////////// |
|---|
| 2 | // |
|---|
| 3 | // (C) Copyright Ion Gaztanaga 2006-2013 |
|---|
| 4 | // |
|---|
| 5 | // Distributed under the Boost Software License, Version 1.0. |
|---|
| 6 | // (See accompanying file LICENSE_1_0.txt or copy at |
|---|
| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
|---|
| 8 | // |
|---|
| 9 | // See http://www.boost.org/libs/intrusive for documentation. |
|---|
| 10 | // |
|---|
| 11 | ///////////////////////////////////////////////////////////////////////////// |
|---|
| 12 | |
|---|
| 13 | #ifndef BOOST_INTRUSIVE_LINK_MODE_HPP |
|---|
| 14 | #define BOOST_INTRUSIVE_LINK_MODE_HPP |
|---|
| 15 | |
|---|
| 16 | #if defined(BOOST_HAS_PRAGMA_ONCE) |
|---|
| 17 | # pragma once |
|---|
| 18 | #endif |
|---|
| 19 | |
|---|
| 20 | namespace boost { |
|---|
| 21 | namespace intrusive { |
|---|
| 22 | |
|---|
| 23 | //!This enumeration defines the type of value_traits that can be defined |
|---|
| 24 | //!for Boost.Intrusive containers |
|---|
| 25 | enum link_mode_type{ |
|---|
| 26 | //!If this linking policy is specified in a value_traits class |
|---|
| 27 | //!as the link_mode, containers |
|---|
| 28 | //!configured with such value_traits won't set the hooks |
|---|
| 29 | //!of the erased values to a default state. Containers also won't |
|---|
| 30 | //!check that the hooks of the new values are default initialized. |
|---|
| 31 | normal_link, |
|---|
| 32 | |
|---|
| 33 | //!If this linking policy is specified in a value_traits class |
|---|
| 34 | //!as the link_mode, containers |
|---|
| 35 | //!configured with such value_traits will set the hooks |
|---|
| 36 | //!of the erased values to a default state. Containers also will |
|---|
| 37 | //!check that the hooks of the new values are default initialized. |
|---|
| 38 | safe_link, |
|---|
| 39 | |
|---|
| 40 | //!Same as "safe_link" but the user type is an auto-unlink |
|---|
| 41 | //!type, so the containers with constant-time size features won't be |
|---|
| 42 | //!compatible with value_traits configured with this policy. |
|---|
| 43 | //!Containers also know that the a value can be silently erased from |
|---|
| 44 | //!the container without using any function provided by the containers. |
|---|
| 45 | auto_unlink |
|---|
| 46 | }; |
|---|
| 47 | |
|---|
| 48 | #ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED |
|---|
| 49 | |
|---|
| 50 | template <link_mode_type link_mode> |
|---|
| 51 | struct is_safe_autounlink |
|---|
| 52 | { |
|---|
| 53 | static const bool value = |
|---|
| 54 | (int)link_mode == (int)auto_unlink || |
|---|
| 55 | (int)link_mode == (int)safe_link; |
|---|
| 56 | }; |
|---|
| 57 | |
|---|
| 58 | #endif //BOOST_INTRUSIVE_DOXYGEN_INVOKED |
|---|
| 59 | |
|---|
| 60 | } //namespace intrusive |
|---|
| 61 | } //namespace boost |
|---|
| 62 | |
|---|
| 63 | #endif //BOOST_INTRUSIVE_LINK_MODE_HPP |
|---|
| 64 | |
|---|
