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4569a895 AT |
1 | // -*- C++ -*- |
2 | ||
99dee823 | 3 | // Copyright (C) 2005-2021 Free Software Foundation, Inc. |
4569a895 AT |
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 | |
748086b7 | 8 | // Foundation; either version 3, or (at your option) any later |
4569a895 AT |
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 | ||
748086b7 JJ |
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. | |
19 | ||
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/>. | |
4569a895 AT |
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 | /** | |
a345e45d | 37 | * @file cc_hash_table_map_/resize_fn_imps.hpp |
4569a895 AT |
38 | * Contains implementations of cc_ht_map_'s resize related functions. |
39 | */ | |
40 | ||
574dfb67 JW |
41 | #ifdef PB_DS_CLASS_C_DEC |
42 | ||
4569a895 AT |
43 | PB_DS_CLASS_T_DEC |
44 | inline bool | |
45 | PB_DS_CLASS_C_DEC:: | |
46 | do_resize_if_needed() | |
47 | { | |
48 | if (!resize_base::is_resize_needed()) | |
1b24692f BK |
49 | return false; |
50 | resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); | |
51 | return true; | |
4569a895 AT |
52 | } |
53 | ||
54 | PB_DS_CLASS_T_DEC | |
55 | void | |
56 | PB_DS_CLASS_C_DEC:: | |
1ab79481 BK |
57 | do_resize(size_type len) |
58 | { resize_imp(resize_base::get_nearest_larger_size(len)); } | |
4569a895 AT |
59 | |
60 | PB_DS_CLASS_T_DEC | |
61 | inline void | |
62 | PB_DS_CLASS_C_DEC:: | |
63 | do_resize_if_needed_no_throw() | |
64 | { | |
65 | if (!resize_base::is_resize_needed()) | |
66 | return; | |
67 | ||
bc2631e0 | 68 | __try |
4569a895 | 69 | { |
1b24692f | 70 | resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); |
4569a895 | 71 | } |
bc2631e0 | 72 | __catch(...) |
4569a895 AT |
73 | { } |
74 | ||
f5886803 | 75 | PB_DS_ASSERT_VALID((*this)) |
1b24692f | 76 | } |
4569a895 AT |
77 | |
78 | PB_DS_CLASS_T_DEC | |
79 | void | |
80 | PB_DS_CLASS_C_DEC:: | |
81 | resize_imp(size_type new_size) | |
82 | { | |
f5886803 | 83 | PB_DS_ASSERT_VALID((*this)) |
1b24692f BK |
84 | if (new_size == m_num_e) |
85 | return; | |
4569a895 | 86 | |
3441f106 | 87 | const size_type old_size = m_num_e; |
4569a895 AT |
88 | entry_pointer_array a_p_entries_resized; |
89 | ||
90 | // Following line might throw an exception. | |
4569a895 AT |
91 | ranged_hash_fn_base::notify_resized(new_size); |
92 | ||
bc2631e0 | 93 | __try |
4569a895 AT |
94 | { |
95 | // Following line might throw an exception. | |
4569a895 | 96 | a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size); |
3441f106 | 97 | m_num_e = new_size; |
4569a895 | 98 | } |
bc2631e0 | 99 | __catch(...) |
4569a895 AT |
100 | { |
101 | ranged_hash_fn_base::notify_resized(old_size); | |
8fafc2d3 | 102 | __throw_exception_again; |
4569a895 AT |
103 | } |
104 | ||
105 | // At this point no exceptions can be thrown. | |
4569a895 | 106 | resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size); |
4569a895 | 107 | Resize_Policy::notify_resized(new_size); |
f5886803 | 108 | PB_DS_ASSERT_VALID((*this)) |
1b24692f | 109 | } |
4569a895 AT |
110 | |
111 | PB_DS_CLASS_T_DEC | |
112 | void | |
113 | PB_DS_CLASS_C_DEC:: | |
114 | resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size) | |
115 | { | |
1b24692f | 116 | std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e, |
8fc81078 | 117 | entry_pointer(0)); |
4569a895 AT |
118 | |
119 | for (size_type pos = 0; pos < old_size; ++pos) | |
120 | { | |
3441f106 | 121 | entry_pointer p_e = m_entries[pos]; |
8fc81078 | 122 | while (p_e != 0) |
1b24692f | 123 | p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized, traits_base::m_store_extra_indicator); |
4569a895 AT |
124 | } |
125 | ||
3441f106 | 126 | m_num_e = new_size; |
f5886803 FD |
127 | _GLIBCXX_DEBUG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized, |
128 | __FILE__, __LINE__);) | |
1b24692f | 129 | s_entry_pointer_allocator.deallocate(m_entries, old_size); |
3441f106 | 130 | m_entries = a_p_entries_resized; |
f5886803 | 131 | PB_DS_ASSERT_VALID((*this)) |
1b24692f | 132 | } |
4569a895 AT |
133 | |
134 | #include <ext/pb_ds/detail/cc_hash_table_map_/resize_no_store_hash_fn_imps.hpp> | |
135 | #include <ext/pb_ds/detail/cc_hash_table_map_/resize_store_hash_fn_imps.hpp> | |
136 | ||
574dfb67 | 137 | #endif |