63e88f80
 Hu Chunming
提交三方库
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/////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2006-2013
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// See http://www.boost.org/libs/intrusive for documentation.
//
/////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_INTRUSIVE_LINK_MODE_HPP
#define BOOST_INTRUSIVE_LINK_MODE_HPP
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
namespace boost {
namespace intrusive {
//!This enumeration defines the type of value_traits that can be defined
//!for Boost.Intrusive containers
enum link_mode_type{
//!If this linking policy is specified in a value_traits class
//!as the link_mode, containers
//!configured with such value_traits won't set the hooks
//!of the erased values to a default state. Containers also won't
//!check that the hooks of the new values are default initialized.
normal_link,
//!If this linking policy is specified in a value_traits class
//!as the link_mode, containers
//!configured with such value_traits will set the hooks
//!of the erased values to a default state. Containers also will
//!check that the hooks of the new values are default initialized.
safe_link,
//!Same as "safe_link" but the user type is an auto-unlink
//!type, so the containers with constant-time size features won't be
//!compatible with value_traits configured with this policy.
//!Containers also know that the a value can be silently erased from
//!the container without using any function provided by the containers.
auto_unlink
};
#ifndef BOOST_INTRUSIVE_DOXYGEN_INVOKED
template <link_mode_type link_mode>
struct is_safe_autounlink
{
static const bool value =
(int)link_mode == (int)auto_unlink ||
(int)link_mode == (int)safe_link;
};
#endif //BOOST_INTRUSIVE_DOXYGEN_INVOKED
} //namespace intrusive
} //namespace boost
#endif //BOOST_INTRUSIVE_LINK_MODE_HPP
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