cond_dealtor.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2026 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
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// version.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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/**
* @file detail/cond_dealtor.hpp
* Contains a conditional deallocator.
*/
#ifndef PB_DS_COND_DEALTOR_HPP
#define PB_DS_COND_DEALTOR_HPP
#include <ext/pb_ds/detail/types_traits.hpp>
namespace __gnu_pbds
{
namespace detail
{
/// Conditional deallocate constructor argument.
template<typename Entry, typename _Alloc>
class cond_dealtor
{
typedef rebind_traits<_Alloc, Entry> alloc_traits;
public:
typedef typename alloc_traits::allocator_type entry_allocator;
typedef typename alloc_traits::pointer entry_pointer;
cond_dealtor(entry_pointer p_e)
: m_p_e(p_e), m_no_action_destructor(false) { }
~cond_dealtor()
{
if (m_no_action_destructor)
return;
s_alloc.deallocate(m_p_e, 1);
}
void
set_no_action()
{ m_no_action_destructor = true; }
private:
entry_pointer m_p_e;
bool m_no_action_destructor;
static entry_allocator s_alloc;
};
template<typename Entry, class _Alloc>
typename cond_dealtor<Entry, _Alloc>::entry_allocator
cond_dealtor<Entry, _Alloc>::s_alloc;
} // namespace detail
} // namespace __gnu_pbds
#endif // #ifndef PB_DS_COND_DEALTOR_HPP
types_traits.hpp
__gnu_pbds
GNU extensions for policy-based data structures for public use.
Definition assoc_container.hpp:52
__gnu_pbds::detail::rebind_traits
Consistent API for accessing allocator-related types.
Definition types_traits.hpp:140