libstdc++
gp_ht_map_.hpp
Go to the documentation of this file.
00001 // -*- C++ -*-
00002 
00003 // Copyright (C) 2005-2013 Free Software Foundation, Inc.
00004 //
00005 // This file is part of the GNU ISO C++ Library.  This library is free
00006 // software; you can redistribute it and/or modify it under the terms
00007 // of the GNU General Public License as published by the Free Software
00008 // Foundation; either version 3, or (at your option) any later
00009 // version.
00010 
00011 // This library is distributed in the hope that it will be useful, but
00012 // WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 // General Public License for more details.
00015 
00016 // Under Section 7 of GPL version 3, you are granted additional
00017 // permissions described in the GCC Runtime Library Exception, version
00018 // 3.1, as published by the Free Software Foundation.
00019 
00020 // You should have received a copy of the GNU General Public License and
00021 // a copy of the GCC Runtime Library Exception along with this program;
00022 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00023 // <http://www.gnu.org/licenses/>.
00024 
00025 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
00026 
00027 // Permission to use, copy, modify, sell, and distribute this software
00028 // is hereby granted without fee, provided that the above copyright
00029 // notice appears in all copies, and that both that copyright notice
00030 // and this permission notice appear in supporting documentation. None
00031 // of the above authors, nor IBM Haifa Research Laboratories, make any
00032 // representation about the suitability of this software for any
00033 // purpose. It is provided "as is" without express or implied
00034 // warranty.
00035 
00036 /**
00037  * @file gp_hash_table_map_/gp_ht_map_.hpp
00038  * Contains an implementation class for general probing hash.
00039  */
00040 
00041 #include <ext/pb_ds/tag_and_trait.hpp>
00042 #include <ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp>
00043 #include <ext/pb_ds/detail/types_traits.hpp>
00044 #include <ext/pb_ds/exception.hpp>
00045 #include <ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp>
00046 #include <utility>
00047 #ifdef PB_DS_HT_MAP_TRACE_
00048 #include <iostream>
00049 #endif
00050 #ifdef _GLIBCXX_DEBUG
00051 #include <ext/pb_ds/detail/debug_map_base.hpp>
00052 #endif
00053 #include <debug/debug.h>
00054 
00055 namespace __gnu_pbds
00056 {
00057   namespace detail
00058   {
00059 #ifdef PB_DS_DATA_TRUE_INDICATOR
00060 #define PB_DS_GP_HASH_NAME gp_ht_map
00061 #endif
00062 
00063 #ifdef PB_DS_DATA_FALSE_INDICATOR
00064 #define PB_DS_GP_HASH_NAME gp_ht_set
00065 #endif
00066 
00067 #define PB_DS_CLASS_T_DEC \
00068    template<typename Key, typename Mapped, typename Hash_Fn, typename Eq_Fn, \
00069         typename _Alloc, bool Store_Hash, typename Comb_Probe_Fn, \
00070         typename Probe_Fn,  typename Resize_Policy>
00071 
00072 #define PB_DS_CLASS_C_DEC \
00073    PB_DS_GP_HASH_NAME<Key, Mapped, Hash_Fn, Eq_Fn, _Alloc, \
00074             Store_Hash, Comb_Probe_Fn, Probe_Fn, Resize_Policy>
00075 
00076 #define PB_DS_HASH_EQ_FN_C_DEC \
00077     hash_eq_fn<Key, Eq_Fn, _Alloc, Store_Hash>
00078 
00079 #define PB_DS_RANGED_PROBE_FN_C_DEC \
00080    ranged_probe_fn<Key, Hash_Fn, _Alloc, Comb_Probe_Fn, Probe_Fn, Store_Hash>
00081 
00082 #define PB_DS_GP_HASH_TRAITS_BASE \
00083    types_traits<Key, Mapped, _Alloc, Store_Hash>
00084 
00085 #ifdef _GLIBCXX_DEBUG
00086 #define PB_DS_DEBUG_MAP_BASE_C_DEC \
00087    debug_map_base<Key, Eq_Fn, \
00088           typename _Alloc::template rebind<Key>::other::const_reference>
00089 #endif
00090 
00091 
00092     /**
00093      *  A general-probing hash-based container.
00094      *
00095      *
00096      *  @ingroup hash-detail
00097      *
00098      *  @tparam Key             Key type.
00099      *
00100      *  @tparam Mapped          Map type.
00101      *
00102      *  @tparam Hash_Fn         Hashing functor.
00103      *                          Default is __gnu_cxx::hash.
00104      *
00105      *  @tparam Eq_Fn           Equal functor.
00106      *                          Default std::equal_to<Key>
00107      *
00108      *  @tparam _Alloc          Allocator type.
00109      *
00110      *  @tparam Store_Hash      If key type stores extra metadata.
00111      *                          Defaults to false.
00112      *
00113      *  @tparam Comb_Probe_Fn   Combining probe functor.
00114      *                          If Hash_Fn is not null_type, then this
00115      *                          is the ranged-probe functor; otherwise,
00116      *                          this is the range-hashing functor.
00117      *                    XXX See Design::Hash-Based Containers::Hash Policies.
00118      *                          Default direct_mask_range_hashing.
00119      *
00120      *  @tparam Probe_Fn        Probe functor.
00121      *                          Defaults to linear_probe_fn,
00122      *                          also quadratic_probe_fn.
00123      *
00124      *  @tparam Resize_Policy   Resizes hash.
00125      *                          Defaults to hash_standard_resize_policy,
00126      *                          using hash_exponential_size_policy and
00127      *                          hash_load_check_resize_trigger.
00128      *
00129      *
00130      *  Bases are: detail::hash_eq_fn, Resize_Policy, detail::ranged_probe_fn,
00131      *             detail::types_traits. (Optional: detail::debug_map_base.)
00132      */
00133     template<typename Key,
00134          typename Mapped,
00135          typename Hash_Fn,
00136          typename Eq_Fn,
00137          typename _Alloc,
00138          bool Store_Hash,
00139          typename Comb_Probe_Fn,
00140          typename Probe_Fn,
00141          typename Resize_Policy>
00142     class PB_DS_GP_HASH_NAME :
00143 #ifdef _GLIBCXX_DEBUG
00144       protected PB_DS_DEBUG_MAP_BASE_C_DEC,
00145 #endif
00146       public PB_DS_HASH_EQ_FN_C_DEC,
00147       public Resize_Policy,
00148       public PB_DS_RANGED_PROBE_FN_C_DEC,
00149       public PB_DS_GP_HASH_TRAITS_BASE
00150     {
00151     private:
00152       typedef PB_DS_GP_HASH_TRAITS_BASE         traits_base;
00153       typedef typename traits_base::value_type  value_type_;
00154       typedef typename traits_base::pointer     pointer_;
00155       typedef typename traits_base::const_pointer const_pointer_;
00156       typedef typename traits_base::reference   reference_;
00157       typedef typename traits_base::const_reference const_reference_;
00158       typedef typename traits_base::comp_hash   comp_hash;
00159 
00160       enum entry_status
00161     {
00162       empty_entry_status,
00163       valid_entry_status,
00164       erased_entry_status
00165     } __attribute__ ((packed));
00166 
00167       struct entry : public traits_base::stored_data_type
00168       {
00169     entry_status m_stat;
00170       };
00171 
00172       typedef typename _Alloc::template rebind<entry>::other entry_allocator;
00173       typedef typename entry_allocator::pointer entry_pointer;
00174       typedef typename entry_allocator::const_pointer const_entry_pointer;
00175       typedef typename entry_allocator::reference entry_reference;
00176       typedef typename entry_allocator::const_reference const_entry_reference;
00177       typedef typename entry_allocator::pointer entry_array;
00178 
00179       typedef PB_DS_RANGED_PROBE_FN_C_DEC   ranged_probe_fn_base;
00180 
00181 #ifdef _GLIBCXX_DEBUG
00182       typedef PB_DS_DEBUG_MAP_BASE_C_DEC    debug_base;
00183 #endif
00184 
00185       typedef PB_DS_HASH_EQ_FN_C_DEC        hash_eq_fn_base;
00186       typedef Resize_Policy             resize_base;
00187 
00188 #define PB_DS_GEN_POS typename _Alloc::size_type
00189 
00190 #include <ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp>
00191 #include <ext/pb_ds/detail/unordered_iterator/point_iterator.hpp>
00192 #include <ext/pb_ds/detail/unordered_iterator/const_iterator.hpp>
00193 #include <ext/pb_ds/detail/unordered_iterator/iterator.hpp>
00194 
00195 #undef PB_DS_GEN_POS
00196 
00197     public:
00198       typedef _Alloc                allocator_type;
00199       typedef typename _Alloc::size_type    size_type;
00200       typedef typename _Alloc::difference_type  difference_type;
00201       typedef Hash_Fn               hash_fn;
00202       typedef Eq_Fn                 eq_fn;
00203       typedef Probe_Fn              probe_fn;
00204       typedef Comb_Probe_Fn             comb_probe_fn;
00205       typedef Resize_Policy             resize_policy;
00206 
00207       /// Value stores hash, true or false.
00208       enum
00209     {
00210       store_hash = Store_Hash
00211     };
00212 
00213       typedef typename traits_base::key_type    key_type;
00214       typedef typename traits_base::key_pointer key_pointer;
00215       typedef typename traits_base::key_const_pointer key_const_pointer;
00216       typedef typename traits_base::key_reference key_reference;
00217       typedef typename traits_base::key_const_reference key_const_reference;
00218       typedef typename traits_base::mapped_type mapped_type;
00219       typedef typename traits_base::mapped_pointer mapped_pointer;
00220       typedef typename traits_base::mapped_const_pointer mapped_const_pointer;
00221       typedef typename traits_base::mapped_reference mapped_reference;
00222       typedef typename traits_base::mapped_const_reference mapped_const_reference;
00223       typedef typename traits_base::value_type value_type;
00224       typedef typename traits_base::pointer pointer;
00225       typedef typename traits_base::const_pointer const_pointer;
00226       typedef typename traits_base::reference reference;
00227       typedef typename traits_base::const_reference const_reference;
00228 
00229 #ifdef PB_DS_DATA_TRUE_INDICATOR
00230       typedef point_iterator_           point_iterator;
00231 #endif
00232 
00233 #ifdef PB_DS_DATA_FALSE_INDICATOR
00234       typedef point_const_iterator_         point_iterator;
00235 #endif
00236 
00237       typedef point_const_iterator_         point_const_iterator;
00238 
00239 #ifdef PB_DS_DATA_TRUE_INDICATOR
00240       typedef iterator_             iterator;
00241 #endif
00242 
00243 #ifdef PB_DS_DATA_FALSE_INDICATOR
00244       typedef const_iterator_           iterator;
00245 #endif
00246 
00247       typedef const_iterator_           const_iterator;
00248 
00249       PB_DS_GP_HASH_NAME();
00250 
00251       PB_DS_GP_HASH_NAME(const PB_DS_CLASS_C_DEC&);
00252 
00253       PB_DS_GP_HASH_NAME(const Hash_Fn&);
00254 
00255       PB_DS_GP_HASH_NAME(const Hash_Fn&, const Eq_Fn&);
00256 
00257       PB_DS_GP_HASH_NAME(const Hash_Fn&, const Eq_Fn&, const Comb_Probe_Fn&);
00258 
00259       PB_DS_GP_HASH_NAME(const Hash_Fn&, const Eq_Fn&, const Comb_Probe_Fn&,
00260              const Probe_Fn&);
00261 
00262       PB_DS_GP_HASH_NAME(const Hash_Fn&, const Eq_Fn&, const Comb_Probe_Fn&,
00263              const Probe_Fn&, const Resize_Policy&);
00264 
00265       template<typename It>
00266       void
00267       copy_from_range(It, It);
00268 
00269       virtual
00270       ~PB_DS_GP_HASH_NAME();
00271 
00272       void
00273       swap(PB_DS_CLASS_C_DEC&);
00274 
00275       inline size_type
00276       size() const;
00277 
00278       inline size_type
00279       max_size() const;
00280 
00281       /// True if size() == 0.
00282       inline bool
00283       empty() const;
00284 
00285       /// Return current hash_fn.
00286       Hash_Fn&
00287       get_hash_fn();
00288 
00289       /// Return current const hash_fn.
00290       const Hash_Fn&
00291       get_hash_fn() const;
00292 
00293       /// Return current eq_fn.
00294       Eq_Fn&
00295       get_eq_fn();
00296 
00297       /// Return current const eq_fn.
00298       const Eq_Fn&
00299       get_eq_fn() const;
00300 
00301       /// Return current probe_fn.
00302       Probe_Fn&
00303       get_probe_fn();
00304 
00305       /// Return current const probe_fn.
00306       const Probe_Fn&
00307       get_probe_fn() const;
00308 
00309       /// Return current comb_probe_fn.
00310       Comb_Probe_Fn&
00311       get_comb_probe_fn();
00312 
00313       /// Return current const comb_probe_fn.
00314       const Comb_Probe_Fn&
00315       get_comb_probe_fn() const;
00316 
00317       /// Return current resize_policy.
00318       Resize_Policy&
00319       get_resize_policy();
00320 
00321       /// Return current const resize_policy.
00322       const Resize_Policy&
00323       get_resize_policy() const;
00324 
00325       inline std::pair<point_iterator, bool>
00326       insert(const_reference r_val)
00327       {
00328        _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid(__FILE__, __LINE__);)
00329     return insert_imp(r_val, traits_base::m_store_extra_indicator);
00330       }
00331 
00332       inline mapped_reference
00333       operator[](key_const_reference r_key)
00334       {
00335 #ifdef PB_DS_DATA_TRUE_INDICATOR
00336     return subscript_imp(r_key, traits_base::m_store_extra_indicator);
00337 #else
00338     insert(r_key);
00339     return traits_base::s_null_type;
00340 #endif
00341       }
00342 
00343       inline point_iterator
00344       find(key_const_reference);
00345 
00346       inline point_const_iterator
00347       find(key_const_reference) const;
00348 
00349       inline point_iterator
00350       find_end();
00351 
00352       inline point_const_iterator
00353       find_end() const;
00354 
00355       inline bool
00356       erase(key_const_reference);
00357 
00358       template<typename Pred>
00359         inline size_type
00360         erase_if(Pred);
00361 
00362       void
00363       clear();
00364 
00365       inline iterator
00366       begin();
00367 
00368       inline const_iterator
00369       begin() const;
00370 
00371       inline iterator
00372       end();
00373       
00374       inline const_iterator
00375       end() const;
00376 
00377 #ifdef _GLIBCXX_DEBUG
00378       void
00379       assert_valid(const char*, int) const;
00380 #endif
00381 
00382 #ifdef PB_DS_HT_MAP_TRACE_
00383       void
00384       trace() const;
00385 #endif
00386 
00387     private:
00388 #ifdef PB_DS_DATA_TRUE_INDICATOR
00389       friend class iterator_;
00390 #endif
00391 
00392       friend class const_iterator_;
00393 
00394       void
00395       deallocate_all();
00396 
00397       void
00398       initialize();
00399 
00400       void
00401       erase_all_valid_entries(entry_array, size_type);
00402 
00403       inline bool
00404       do_resize_if_needed();
00405 
00406       inline void
00407       do_resize_if_needed_no_throw();
00408 
00409       void
00410       resize_imp(size_type);
00411 
00412       virtual void
00413       do_resize(size_type);
00414 
00415       void
00416       resize_imp(entry_array, size_type);
00417 
00418       inline void
00419       resize_imp_reassign(entry_pointer, entry_array, false_type);
00420 
00421       inline void
00422       resize_imp_reassign(entry_pointer, entry_array, true_type);
00423 
00424       inline size_type
00425       find_ins_pos(key_const_reference, false_type);
00426 
00427       inline comp_hash
00428       find_ins_pos(key_const_reference, true_type);
00429 
00430       inline std::pair<point_iterator, bool>
00431       insert_imp(const_reference, false_type);
00432 
00433       inline std::pair<point_iterator, bool>
00434       insert_imp(const_reference, true_type);
00435 
00436       inline pointer
00437       insert_new_imp(const_reference r_val, size_type pos)
00438       {
00439     _GLIBCXX_DEBUG_ASSERT(m_entries[pos].m_stat != valid_entry_status);
00440 
00441     if (do_resize_if_needed())
00442       pos = find_ins_pos(PB_DS_V2F(r_val),
00443                  traits_base::m_store_extra_indicator);
00444 
00445     _GLIBCXX_DEBUG_ASSERT(m_entries[pos].m_stat != valid_entry_status);
00446     entry* const p_e = m_entries + pos;
00447     new (&p_e->m_value) value_type(r_val);
00448     p_e->m_stat = valid_entry_status;
00449     resize_base::notify_inserted(++m_num_used_e);
00450 
00451     _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(p_e->m_value));)
00452     _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
00453     return &p_e->m_value;
00454       }
00455 
00456       inline pointer
00457       insert_new_imp(const_reference r_val, comp_hash& r_pos_hash_pair)
00458       {
00459     _GLIBCXX_DEBUG_ASSERT(m_entries[r_pos_hash_pair.first].m_stat !=
00460                   valid_entry_status);
00461 
00462     if (do_resize_if_needed())
00463       r_pos_hash_pair = find_ins_pos(PB_DS_V2F(r_val),
00464                      traits_base::m_store_extra_indicator);
00465 
00466     _GLIBCXX_DEBUG_ASSERT(m_entries[r_pos_hash_pair.first].m_stat !=
00467                   valid_entry_status);
00468 
00469     entry* const p_e = m_entries + r_pos_hash_pair.first;
00470     new (&p_e->m_value) value_type(r_val);
00471     p_e->m_hash = r_pos_hash_pair.second;
00472     p_e->m_stat = valid_entry_status;
00473 
00474     resize_base::notify_inserted(++m_num_used_e);
00475 
00476     _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(p_e->m_value));)
00477     _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
00478     return &p_e->m_value;
00479       }
00480 
00481 #ifdef PB_DS_DATA_TRUE_INDICATOR
00482       inline mapped_reference
00483       subscript_imp(key_const_reference key, false_type)
00484       {
00485     _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
00486 
00487     const size_type pos = find_ins_pos(key,
00488                      traits_base::m_store_extra_indicator);
00489 
00490     entry_pointer p_e = &m_entries[pos];
00491     if (p_e->m_stat != valid_entry_status)
00492       return insert_new_imp(value_type(key, mapped_type()), pos)->second;
00493 
00494     PB_DS_CHECK_KEY_EXISTS(key)
00495     return p_e->m_value.second;
00496       }
00497 
00498       inline mapped_reference
00499       subscript_imp(key_const_reference key, true_type)
00500       {
00501     _GLIBCXX_DEBUG_ONLY(assert_valid(__FILE__, __LINE__);)
00502 
00503     comp_hash pos_hash_pair = find_ins_pos(key,
00504                      traits_base::m_store_extra_indicator);
00505 
00506     if (m_entries[pos_hash_pair.first].m_stat != valid_entry_status)
00507       return insert_new_imp(value_type(key, mapped_type()),
00508                  pos_hash_pair)->second;
00509 
00510     PB_DS_CHECK_KEY_EXISTS(key)
00511     return (m_entries + pos_hash_pair.first)->m_value.second;
00512       }
00513 #endif
00514 
00515       inline pointer
00516       find_key_pointer(key_const_reference key, false_type)
00517       {
00518     const size_type hash = ranged_probe_fn_base::operator()(key);
00519     resize_base::notify_find_search_start();
00520 
00521     // Loop until entry is found or until all possible entries accessed.
00522     for (size_type i = 0; i < m_num_e; ++i)
00523       {
00524         const size_type pos = ranged_probe_fn_base::operator()(key,
00525                                    hash, i);
00526 
00527         entry* const p_e = m_entries + pos;
00528         switch (p_e->m_stat)
00529           {
00530           case empty_entry_status:
00531         {
00532           resize_base::notify_find_search_end();
00533           PB_DS_CHECK_KEY_DOES_NOT_EXIST(key)
00534           return 0;
00535         }
00536         break;
00537           case valid_entry_status:
00538         if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value), key))
00539           {
00540             resize_base::notify_find_search_end();
00541             PB_DS_CHECK_KEY_EXISTS(key)
00542             return pointer(&p_e->m_value);
00543           }
00544         break;
00545           case erased_entry_status:
00546         break;
00547           default:
00548         _GLIBCXX_DEBUG_ASSERT(0);
00549           };
00550 
00551         resize_base::notify_find_search_collision();
00552       }
00553 
00554     PB_DS_CHECK_KEY_DOES_NOT_EXIST(key)
00555     resize_base::notify_find_search_end();
00556     return 0;
00557       }
00558 
00559       inline pointer
00560       find_key_pointer(key_const_reference key, true_type)
00561       {
00562     comp_hash pos_hash_pair = ranged_probe_fn_base::operator()(key);
00563     resize_base::notify_find_search_start();
00564 
00565     // Loop until entry is found or until all possible entries accessed.
00566     for (size_type i = 0; i < m_num_e; ++i)
00567       {
00568         const size_type pos =
00569           ranged_probe_fn_base::operator()(key, pos_hash_pair.second, i);
00570 
00571         entry* const p_e = m_entries + pos;
00572 
00573         switch(p_e->m_stat)
00574           {
00575           case empty_entry_status:
00576         {
00577           resize_base::notify_find_search_end();
00578           PB_DS_CHECK_KEY_DOES_NOT_EXIST(key)
00579           return 0;
00580         }
00581         break;
00582           case valid_entry_status:
00583         if (hash_eq_fn_base::operator()(PB_DS_V2F(p_e->m_value),
00584                         p_e->m_hash,
00585                         key, pos_hash_pair.second))
00586           {
00587             resize_base::notify_find_search_end();
00588             PB_DS_CHECK_KEY_EXISTS(key)
00589             return pointer(&p_e->m_value);
00590           }
00591         break;
00592           case erased_entry_status:
00593         break;
00594           default:
00595         _GLIBCXX_DEBUG_ASSERT(0);
00596           };
00597 
00598         resize_base::notify_find_search_collision();
00599       }
00600 
00601     PB_DS_CHECK_KEY_DOES_NOT_EXIST(key)
00602     resize_base::notify_find_search_end();
00603     return 0;
00604       }
00605 
00606       inline bool
00607       erase_imp(key_const_reference, true_type);
00608 
00609       inline bool
00610       erase_imp(key_const_reference, false_type);
00611 
00612       inline void
00613       erase_entry(entry_pointer);
00614 
00615 #ifdef PB_DS_DATA_TRUE_INDICATOR
00616       void
00617       inc_it_state(pointer& r_p_value, size_type& r_pos) const
00618       { inc_it_state((mapped_const_pointer& )r_p_value, r_pos); }
00619 #endif
00620 
00621       void
00622       inc_it_state(const_pointer& r_p_value, size_type& r_pos) const
00623       {
00624     _GLIBCXX_DEBUG_ASSERT(r_p_value != 0);
00625     for (++r_pos; r_pos < m_num_e; ++r_pos)
00626       {
00627         const_entry_pointer p_e =& m_entries[r_pos];
00628         if (p_e->m_stat == valid_entry_status)
00629           {
00630         r_p_value =& p_e->m_value;
00631         return;
00632           }
00633       }
00634     r_p_value = 0;
00635       }
00636 
00637       void
00638       get_start_it_state(const_pointer& r_p_value, size_type& r_pos) const
00639       {
00640     for (r_pos = 0; r_pos < m_num_e; ++r_pos)
00641       {
00642         const_entry_pointer p_e = &m_entries[r_pos];
00643         if (p_e->m_stat == valid_entry_status)
00644           {
00645         r_p_value = &p_e->m_value;
00646         return;
00647           }
00648       }
00649     r_p_value = 0;
00650       }
00651 
00652       void
00653       get_start_it_state(pointer& r_p_value, size_type& r_pos)
00654       {
00655     for (r_pos = 0; r_pos < m_num_e; ++r_pos)
00656       {
00657         entry_pointer p_e = &m_entries[r_pos];
00658         if (p_e->m_stat == valid_entry_status)
00659           {
00660         r_p_value = &p_e->m_value;
00661         return;
00662           }
00663       }
00664     r_p_value = 0;
00665       }
00666 
00667 #ifdef _GLIBCXX_DEBUG
00668       void
00669       assert_entry_array_valid(const entry_array, false_type,
00670                    const char*, int) const;
00671 
00672       void
00673       assert_entry_array_valid(const entry_array, true_type,
00674                    const char*, int) const;
00675 #endif
00676 
00677       static entry_allocator    s_entry_allocator;
00678       static iterator       s_end_it;
00679       static const_iterator     s_const_end_it;
00680 
00681       size_type         m_num_e;
00682       size_type         m_num_used_e;
00683       entry_pointer         m_entries;
00684 
00685       enum
00686     {
00687       store_hash_ok = !Store_Hash
00688               || !is_same<Hash_Fn, __gnu_pbds::null_type>::value
00689     };
00690 
00691       PB_DS_STATIC_ASSERT(sth, store_hash_ok);
00692     };
00693 
00694 #include <ext/pb_ds/detail/gp_hash_table_map_/constructor_destructor_fn_imps.hpp>
00695 #include <ext/pb_ds/detail/gp_hash_table_map_/find_fn_imps.hpp>
00696 #include <ext/pb_ds/detail/gp_hash_table_map_/resize_fn_imps.hpp>
00697 #include <ext/pb_ds/detail/gp_hash_table_map_/debug_fn_imps.hpp>
00698 #include <ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp>
00699 #include <ext/pb_ds/detail/gp_hash_table_map_/policy_access_fn_imps.hpp>
00700 #include <ext/pb_ds/detail/gp_hash_table_map_/erase_fn_imps.hpp>
00701 #include <ext/pb_ds/detail/gp_hash_table_map_/iterator_fn_imps.hpp>
00702 #include <ext/pb_ds/detail/gp_hash_table_map_/insert_fn_imps.hpp>
00703 #include <ext/pb_ds/detail/gp_hash_table_map_/trace_fn_imps.hpp>
00704 
00705 #undef PB_DS_CLASS_T_DEC
00706 #undef PB_DS_CLASS_C_DEC
00707 #undef PB_DS_HASH_EQ_FN_C_DEC
00708 #undef PB_DS_RANGED_PROBE_FN_C_DEC
00709 #undef PB_DS_GP_HASH_TRAITS_BASE
00710 #undef PB_DS_DEBUG_MAP_BASE_C_DEC
00711 #undef PB_DS_GP_HASH_NAME
00712   } // namespace detail
00713 } // namespace __gnu_pbds