sample_resize_policy.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2025 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
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// of the GNU General Public License as published by the Free Software
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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/**
* @file sample_resize_policy.hpp
* Contains a sample resize policy for hash tables.
*/
#ifndef PB_DS_SAMPLE_RESIZE_POLICY_HPP
#define PB_DS_SAMPLE_RESIZE_POLICY_HPP
namespace __gnu_pbds
{
/// A sample resize policy.
class sample_resize_policy
{
public:
/// Size type.
typedef std::size_t size_type;
/// Default constructor.
sample_resize_policy();
/// Copy constructor.
sample_range_hashing(const sample_resize_policy& other);
/// Swaps content.
inline void
swap(sample_resize_policy& other);
protected:
/// Notifies a search started.
inline void
notify_insert_search_start();
/// Notifies a search encountered a collision.
inline void
notify_insert_search_collision();
/// Notifies a search ended.
inline void
notify_insert_search_end();
/// Notifies a search started.
inline void
notify_find_search_start();
/// Notifies a search encountered a collision.
inline void
notify_find_search_collision();
/// Notifies a search ended.
inline void
notify_find_search_end();
/// Notifies a search started.
inline void
notify_erase_search_start();
/// Notifies a search encountered a collision.
inline void
notify_erase_search_collision();
/// Notifies a search ended.
inline void
notify_erase_search_end();
/// Notifies an element was inserted.
inline void
notify_inserted(size_type num_e);
/// Notifies an element was erased.
inline void
notify_erased(size_type num_e);
/// Notifies the table was cleared.
void
notify_cleared();
/// Notifies the table was resized to new_size.
void
notify_resized(size_type new_size);
/// Queries whether a resize is needed.
inline bool
is_resize_needed() const;
/// Queries what the new size should be.
size_type
get_new_size(size_type size, size_type num_used_e) const;
};
}
#endif
__gnu_pbds
GNU extensions for policy-based data structures for public use.
Definition assoc_container.hpp:52
__gnu_pbds::sample_resize_policy::notify_find_search_start
void notify_find_search_start()
Notifies a search started.
__gnu_pbds::sample_resize_policy::notify_cleared
void notify_cleared()
Notifies the table was cleared.
__gnu_pbds::sample_resize_policy::notify_resized
void notify_resized(size_type new_size)
Notifies the table was resized to new_size.
__gnu_pbds::sample_resize_policy::get_new_size
size_type get_new_size(size_type size, size_type num_used_e) const
Queries what the new size should be.
__gnu_pbds::sample_resize_policy::notify_insert_search_end
void notify_insert_search_end()
Notifies a search ended.
__gnu_pbds::sample_resize_policy::notify_erase_search_end
void notify_erase_search_end()
Notifies a search ended.
__gnu_pbds::sample_resize_policy::sample_resize_policy
sample_resize_policy()
Default constructor.
__gnu_pbds::sample_resize_policy::notify_erase_search_collision
void notify_erase_search_collision()
Notifies a search encountered a collision.
__gnu_pbds::sample_resize_policy::is_resize_needed
bool is_resize_needed() const
Queries whether a resize is needed.
__gnu_pbds::sample_resize_policy::notify_find_search_collision
void notify_find_search_collision()
Notifies a search encountered a collision.
__gnu_pbds::sample_resize_policy::notify_erase_search_start
void notify_erase_search_start()
Notifies a search started.
__gnu_pbds::sample_resize_policy::sample_range_hashing
sample_range_hashing(const sample_resize_policy &other)
Copy constructor.
__gnu_pbds::sample_resize_policy::notify_find_search_end
void notify_find_search_end()
Notifies a search ended.
__gnu_pbds::sample_resize_policy::notify_erased
void notify_erased(size_type num_e)
Notifies an element was erased.
__gnu_pbds::sample_resize_policy::notify_insert_search_collision
void notify_insert_search_collision()
Notifies a search encountered a collision.
__gnu_pbds::sample_resize_policy::notify_inserted
void notify_inserted(size_type num_e)
Notifies an element was inserted.
__gnu_pbds::sample_resize_policy::swap
void swap(sample_resize_policy &other)
Swaps content.
__gnu_pbds::sample_resize_policy::notify_insert_search_start
void notify_insert_search_start()
Notifies a search started.
__gnu_pbds::sample_resize_policy::size_type
std::size_t size_type
Size type.
Definition sample_resize_policy.hpp:51