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36fed23c | 1 | // -*- C++ -*- |
2 | ||
fbd26352 | 3 | // Copyright (C) 2005-2019 Free Software Foundation, Inc. |
36fed23c | 4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the terms | |
7 | // of the GNU General Public License as published by the Free Software | |
6bc9506f | 8 | // Foundation; either version 3, or (at your option) any later |
36fed23c | 9 | // version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, but | |
12 | // WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | // General Public License for more details. | |
15 | ||
6bc9506f | 16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
36fed23c | 19 | |
6bc9506f | 20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
36fed23c | 24 | |
25 | // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. | |
26 | ||
27 | // Permission to use, copy, modify, sell, and distribute this software | |
28 | // is hereby granted without fee, provided that the above copyright | |
29 | // notice appears in all copies, and that both that copyright notice | |
30 | // and this permission notice appear in supporting documentation. None | |
31 | // of the above authors, nor IBM Haifa Research Laboratories, make any | |
32 | // representation about the suitability of this software for any | |
33 | // purpose. It is provided "as is" without express or implied | |
34 | // warranty. | |
35 | ||
36 | /** | |
4f4a327e | 37 | * @file gp_hash_table_map_/resize_fn_imps.hpp |
36fed23c | 38 | * Contains implementations of gp_ht_map_'s resize related functions. |
39 | */ | |
40 | ||
41 | PB_DS_CLASS_T_DEC | |
42 | inline bool | |
43 | PB_DS_CLASS_C_DEC:: | |
44 | do_resize_if_needed() | |
45 | { | |
46 | if (!resize_base::is_resize_needed()) | |
ce8b0a77 | 47 | return false; |
48 | resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); | |
49 | return true; | |
36fed23c | 50 | } |
51 | ||
52 | PB_DS_CLASS_T_DEC | |
53 | void | |
54 | PB_DS_CLASS_C_DEC:: | |
ce8b0a77 | 55 | do_resize(size_type n) |
56 | { resize_imp(resize_base::get_nearest_larger_size(n)); } | |
36fed23c | 57 | |
58 | PB_DS_CLASS_T_DEC | |
59 | inline void | |
60 | PB_DS_CLASS_C_DEC:: | |
61 | do_resize_if_needed_no_throw() | |
62 | { | |
63 | if (!resize_base::is_resize_needed()) | |
64 | return; | |
65 | ||
b1a09c64 | 66 | __try |
36fed23c | 67 | { |
ce8b0a77 | 68 | resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); |
36fed23c | 69 | } |
b1a09c64 | 70 | __catch(...) |
36fed23c | 71 | { } |
72 | ||
2548203e | 73 | PB_DS_ASSERT_VALID((*this)) |
ce8b0a77 | 74 | } |
36fed23c | 75 | |
76 | PB_DS_CLASS_T_DEC | |
77 | void | |
78 | PB_DS_CLASS_C_DEC:: | |
79 | resize_imp(size_type new_size) | |
80 | { | |
81 | #ifdef PB_DS_REGRESSION | |
4f4a327e | 82 | typename _Alloc::group_adjustor adjust(m_num_e); |
ce8b0a77 | 83 | #endif |
36fed23c | 84 | |
85 | if (new_size == m_num_e) | |
86 | return; | |
87 | ||
2548203e | 88 | PB_DS_ASSERT_VALID((*this)) |
ce8b0a77 | 89 | const size_type old_size = m_num_e; |
e4bb1925 | 90 | entry_array a_entries_resized = 0; |
36fed23c | 91 | |
92 | // Following line might throw an exception. | |
36fed23c | 93 | a_entries_resized = s_entry_allocator.allocate(new_size); |
94 | ||
95 | ranged_probe_fn_base::notify_resized(new_size); | |
36fed23c | 96 | m_num_e = new_size; |
97 | ||
98 | for (size_type i = 0; i < m_num_e; ++i) | |
99 | a_entries_resized[i].m_stat = empty_entry_status; | |
100 | ||
b1a09c64 | 101 | __try |
36fed23c | 102 | { |
103 | resize_imp(a_entries_resized, old_size); | |
104 | } | |
b1a09c64 | 105 | __catch(...) |
36fed23c | 106 | { |
107 | erase_all_valid_entries(a_entries_resized, new_size); | |
36fed23c | 108 | m_num_e = old_size; |
36fed23c | 109 | s_entry_allocator.deallocate(a_entries_resized, new_size); |
36fed23c | 110 | ranged_probe_fn_base::notify_resized(old_size); |
c4f08cc0 | 111 | __throw_exception_again; |
36fed23c | 112 | } |
113 | ||
114 | // At this point no exceptions can be thrown. | |
2548203e | 115 | _GLIBCXX_DEBUG_ONLY(assert_entry_array_valid(a_entries_resized, |
116 | traits_base::m_store_extra_indicator, | |
117 | __FILE__, __LINE__);) | |
36fed23c | 118 | |
ce8b0a77 | 119 | Resize_Policy::notify_resized(new_size); |
120 | erase_all_valid_entries(m_entries, old_size); | |
121 | s_entry_allocator.deallocate(m_entries, old_size); | |
122 | m_entries = a_entries_resized; | |
2548203e | 123 | PB_DS_ASSERT_VALID((*this)) |
ce8b0a77 | 124 | } |
36fed23c | 125 | |
126 | PB_DS_CLASS_T_DEC | |
127 | void | |
128 | PB_DS_CLASS_C_DEC:: | |
129 | resize_imp(entry_array a_entries_resized, size_type old_size) | |
130 | { | |
131 | for (size_type pos = 0; pos < old_size; ++pos) | |
ce8b0a77 | 132 | if (m_entries[pos].m_stat == valid_entry_status) |
133 | resize_imp_reassign(m_entries + pos, a_entries_resized, | |
134 | traits_base::m_store_extra_indicator); | |
36fed23c | 135 | } |
136 | ||
137 | #include <ext/pb_ds/detail/gp_hash_table_map_/resize_no_store_hash_fn_imps.hpp> | |
138 | #include <ext/pb_ds/detail/gp_hash_table_map_/resize_store_hash_fn_imps.hpp> | |
139 |