1 // Debugging unordered_map/unordered_multimap implementation -*- C++ -*-
3 // Copyright (C) 2003-2016 Free Software Foundation, Inc.
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
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
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.
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/>.
25 /** @file debug/unordered_map
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_UNORDERED_MAP
30 #define _GLIBCXX_DEBUG_UNORDERED_MAP 1
32 #if __cplusplus < 201103L
33 # include <bits/c++0x_warning.h>
35 # include <unordered_map>
37 #include <debug/safe_unordered_container.h>
38 #include <debug/safe_container.h>
39 #include <debug/safe_iterator.h>
40 #include <debug/safe_local_iterator.h>
42 namespace std _GLIBCXX_VISIBILITY(default)
46 /// Class std::unordered_map with safety/checking/debug instrumentation.
47 template<typename _Key, typename _Tp,
48 typename _Hash = std::hash<_Key>,
49 typename _Pred = std::equal_to<_Key>,
50 typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
52 : public __gnu_debug::_Safe_container<
53 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>, _Alloc,
54 __gnu_debug::_Safe_unordered_container>,
55 public _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>
57 typedef _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash,
59 typedef __gnu_debug::_Safe_container<unordered_map,
60 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
61 typedef typename _Base::const_iterator _Base_const_iterator;
62 typedef typename _Base::iterator _Base_iterator;
63 typedef typename _Base::const_local_iterator
64 _Base_const_local_iterator;
65 typedef typename _Base::local_iterator _Base_local_iterator;
68 typedef typename _Base::size_type size_type;
69 typedef typename _Base::hasher hasher;
70 typedef typename _Base::key_equal key_equal;
71 typedef typename _Base::allocator_type allocator_type;
73 typedef typename _Base::key_type key_type;
74 typedef typename _Base::value_type value_type;
76 typedef __gnu_debug::_Safe_iterator<
77 _Base_iterator, unordered_map> iterator;
78 typedef __gnu_debug::_Safe_iterator<
79 _Base_const_iterator, unordered_map> const_iterator;
80 typedef __gnu_debug::_Safe_local_iterator<
81 _Base_local_iterator, unordered_map> local_iterator;
82 typedef __gnu_debug::_Safe_local_iterator<
83 _Base_const_local_iterator, unordered_map> const_local_iterator;
85 unordered_map() = default;
88 unordered_map(size_type __n,
89 const hasher& __hf = hasher(),
90 const key_equal& __eql = key_equal(),
91 const allocator_type& __a = allocator_type())
92 : _Base(__n, __hf, __eql, __a) { }
94 template<typename _InputIterator>
95 unordered_map(_InputIterator __first, _InputIterator __last,
97 const hasher& __hf = hasher(),
98 const key_equal& __eql = key_equal(),
99 const allocator_type& __a = allocator_type())
100 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
102 __gnu_debug::__base(__last), __n,
103 __hf, __eql, __a) { }
105 unordered_map(const unordered_map&) = default;
107 unordered_map(const _Base& __x)
110 unordered_map(unordered_map&&) = default;
113 unordered_map(const allocator_type& __a)
116 unordered_map(const unordered_map& __umap,
117 const allocator_type& __a)
118 : _Base(__umap, __a) { }
120 unordered_map(unordered_map&& __umap,
121 const allocator_type& __a)
122 : _Safe(std::move(__umap._M_safe()), __a),
123 _Base(std::move(__umap._M_base()), __a) { }
125 unordered_map(initializer_list<value_type> __l,
127 const hasher& __hf = hasher(),
128 const key_equal& __eql = key_equal(),
129 const allocator_type& __a = allocator_type())
130 : _Base(__l, __n, __hf, __eql, __a) { }
132 unordered_map(size_type __n, const allocator_type& __a)
133 : unordered_map(__n, hasher(), key_equal(), __a)
136 unordered_map(size_type __n,
138 const allocator_type& __a)
139 : unordered_map(__n, __hf, key_equal(), __a)
142 template<typename _InputIterator>
143 unordered_map(_InputIterator __first, _InputIterator __last,
145 const allocator_type& __a)
146 : unordered_map(__first, __last, __n, hasher(), key_equal(), __a)
149 template<typename _InputIterator>
150 unordered_map(_InputIterator __first, _InputIterator __last,
153 const allocator_type& __a)
154 : unordered_map(__first, __last, __n, __hf, key_equal(), __a)
157 unordered_map(initializer_list<value_type> __l,
159 const allocator_type& __a)
160 : unordered_map(__l, __n, hasher(), key_equal(), __a)
163 unordered_map(initializer_list<value_type> __l,
166 const allocator_type& __a)
167 : unordered_map(__l, __n, __hf, key_equal(), __a)
170 ~unordered_map() = default;
173 operator=(const unordered_map&) = default;
176 operator=(unordered_map&&) = default;
179 operator=(initializer_list<value_type> __l)
182 this->_M_invalidate_all();
187 swap(unordered_map& __x)
188 noexcept( noexcept(declval<_Base&>().swap(__x)) )
198 this->_M_invalidate_all();
203 { return iterator(_Base::begin(), this); }
206 begin() const noexcept
207 { return const_iterator(_Base::begin(), this); }
211 { return iterator(_Base::end(), this); }
215 { return const_iterator(_Base::end(), this); }
218 cbegin() const noexcept
219 { return const_iterator(_Base::begin(), this); }
222 cend() const noexcept
223 { return const_iterator(_Base::end(), this); }
229 __glibcxx_check_bucket_index(__b);
230 return local_iterator(_Base::begin(__b), this);
236 __glibcxx_check_bucket_index(__b);
237 return local_iterator(_Base::end(__b), this);
241 begin(size_type __b) const
243 __glibcxx_check_bucket_index(__b);
244 return const_local_iterator(_Base::begin(__b), this);
248 end(size_type __b) const
250 __glibcxx_check_bucket_index(__b);
251 return const_local_iterator(_Base::end(__b), this);
255 cbegin(size_type __b) const
257 __glibcxx_check_bucket_index(__b);
258 return const_local_iterator(_Base::cbegin(__b), this);
262 cend(size_type __b) const
264 __glibcxx_check_bucket_index(__b);
265 return const_local_iterator(_Base::cend(__b), this);
269 bucket_size(size_type __b) const
271 __glibcxx_check_bucket_index(__b);
272 return _Base::bucket_size(__b);
276 max_load_factor() const noexcept
277 { return _Base::max_load_factor(); }
280 max_load_factor(float __f)
282 __glibcxx_check_max_load_factor(__f);
283 _Base::max_load_factor(__f);
286 template<typename... _Args>
287 std::pair<iterator, bool>
288 emplace(_Args&&... __args)
290 size_type __bucket_count = this->bucket_count();
291 std::pair<_Base_iterator, bool> __res
292 = _Base::emplace(std::forward<_Args>(__args)...);
293 _M_check_rehashed(__bucket_count);
294 return std::make_pair(iterator(__res.first, this), __res.second);
297 template<typename... _Args>
299 emplace_hint(const_iterator __hint, _Args&&... __args)
301 __glibcxx_check_insert(__hint);
302 size_type __bucket_count = this->bucket_count();
303 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
304 std::forward<_Args>(__args)...);
305 _M_check_rehashed(__bucket_count);
306 return iterator(__it, this);
309 std::pair<iterator, bool>
310 insert(const value_type& __obj)
312 size_type __bucket_count = this->bucket_count();
313 std::pair<_Base_iterator, bool> __res = _Base::insert(__obj);
314 _M_check_rehashed(__bucket_count);
315 return std::make_pair(iterator(__res.first, this), __res.second);
319 insert(const_iterator __hint, const value_type& __obj)
321 __glibcxx_check_insert(__hint);
322 size_type __bucket_count = this->bucket_count();
323 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
324 _M_check_rehashed(__bucket_count);
325 return iterator(__it, this);
328 template<typename _Pair, typename = typename
329 std::enable_if<std::is_constructible<value_type,
330 _Pair&&>::value>::type>
331 std::pair<iterator, bool>
332 insert(_Pair&& __obj)
334 size_type __bucket_count = this->bucket_count();
335 std::pair<_Base_iterator, bool> __res =
336 _Base::insert(std::forward<_Pair>(__obj));
337 _M_check_rehashed(__bucket_count);
338 return std::make_pair(iterator(__res.first, this), __res.second);
341 template<typename _Pair, typename = typename
342 std::enable_if<std::is_constructible<value_type,
343 _Pair&&>::value>::type>
345 insert(const_iterator __hint, _Pair&& __obj)
347 __glibcxx_check_insert(__hint);
348 size_type __bucket_count = this->bucket_count();
349 _Base_iterator __it =
350 _Base::insert(__hint.base(), std::forward<_Pair>(__obj));
351 _M_check_rehashed(__bucket_count);
352 return iterator(__it, this);
356 insert(std::initializer_list<value_type> __l)
358 size_type __bucket_count = this->bucket_count();
360 _M_check_rehashed(__bucket_count);
363 template<typename _InputIterator>
365 insert(_InputIterator __first, _InputIterator __last)
367 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
368 __glibcxx_check_valid_range2(__first, __last, __dist);
369 size_type __bucket_count = this->bucket_count();
371 if (__dist.second >= __gnu_debug::__dp_sign)
372 _Base::insert(__gnu_debug::__unsafe(__first),
373 __gnu_debug::__unsafe(__last));
375 _Base::insert(__first, __last);
377 _M_check_rehashed(__bucket_count);
380 #if __cplusplus > 201402L
381 template <typename... _Args>
383 try_emplace(const key_type& __k, _Args&&... __args)
385 auto __res = _Base::try_emplace(__k,
386 std::forward<_Args>(__args)...);
387 return { iterator(__res.first, this), __res.second };
390 template <typename... _Args>
392 try_emplace(key_type&& __k, _Args&&... __args)
394 auto __res = _Base::try_emplace(std::move(__k),
395 std::forward<_Args>(__args)...);
396 return { iterator(__res.first, this), __res.second };
399 template <typename... _Args>
401 try_emplace(const_iterator __hint, const key_type& __k,
404 __glibcxx_check_insert(__hint);
405 return iterator(_Base::try_emplace(__hint.base(), __k,
406 std::forward<_Args>(__args)...),
410 template <typename... _Args>
412 try_emplace(const_iterator __hint, key_type&& __k, _Args&&... __args)
414 __glibcxx_check_insert(__hint);
415 return iterator(_Base::try_emplace(__hint.base(), std::move(__k),
416 std::forward<_Args>(__args)...),
420 template <typename _Obj>
422 insert_or_assign(const key_type& __k, _Obj&& __obj)
424 auto __res = _Base::insert_or_assign(__k,
425 std::forward<_Obj>(__obj));
426 return { iterator(__res.first, this), __res.second };
429 template <typename _Obj>
431 insert_or_assign(key_type&& __k, _Obj&& __obj)
433 auto __res = _Base::insert_or_assign(std::move(__k),
434 std::forward<_Obj>(__obj));
435 return { iterator(__res.first, this), __res.second };
438 template <typename _Obj>
440 insert_or_assign(const_iterator __hint, const key_type& __k,
443 __glibcxx_check_insert(__hint);
444 return iterator(_Base::insert_or_assign(__hint.base(), __k,
445 std::forward<_Obj>(__obj)),
449 template <typename _Obj>
451 insert_or_assign(const_iterator __hint, key_type&& __k, _Obj&& __obj)
453 __glibcxx_check_insert(__hint);
454 return iterator(_Base::insert_or_assign(__hint.base(),
456 std::forward<_Obj>(__obj)),
463 find(const key_type& __key)
464 { return iterator(_Base::find(__key), this); }
467 find(const key_type& __key) const
468 { return const_iterator(_Base::find(__key), this); }
470 std::pair<iterator, iterator>
471 equal_range(const key_type& __key)
473 std::pair<_Base_iterator, _Base_iterator> __res =
474 _Base::equal_range(__key);
475 return std::make_pair(iterator(__res.first, this),
476 iterator(__res.second, this));
479 std::pair<const_iterator, const_iterator>
480 equal_range(const key_type& __key) const
482 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
483 _Base::equal_range(__key);
484 return std::make_pair(const_iterator(__res.first, this),
485 const_iterator(__res.second, this));
489 erase(const key_type& __key)
492 _Base_iterator __victim(_Base::find(__key));
493 if (__victim != _Base::end())
495 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
496 { return __it == __victim; });
497 this->_M_invalidate_local_if(
498 [__victim](_Base_const_local_iterator __it)
499 { return __it._M_curr() == __victim._M_cur; });
500 size_type __bucket_count = this->bucket_count();
501 _Base::erase(__victim);
502 _M_check_rehashed(__bucket_count);
509 erase(const_iterator __it)
511 __glibcxx_check_erase(__it);
512 _Base_const_iterator __victim = __it.base();
513 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
514 { return __it == __victim; });
515 this->_M_invalidate_local_if(
516 [__victim](_Base_const_local_iterator __it)
517 { return __it._M_curr() == __victim._M_cur; });
518 size_type __bucket_count = this->bucket_count();
519 _Base_iterator __next = _Base::erase(__it.base());
520 _M_check_rehashed(__bucket_count);
521 return iterator(__next, this);
526 { return erase(const_iterator(__it)); }
529 erase(const_iterator __first, const_iterator __last)
531 __glibcxx_check_erase_range(__first, __last);
532 for (_Base_const_iterator __tmp = __first.base();
533 __tmp != __last.base(); ++__tmp)
535 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
536 _M_message(__gnu_debug::__msg_valid_range)
537 ._M_iterator(__first, "first")
538 ._M_iterator(__last, "last"));
539 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
540 { return __it == __tmp; });
541 this->_M_invalidate_local_if(
542 [__tmp](_Base_const_local_iterator __it)
543 { return __it._M_curr() == __tmp._M_cur; });
545 size_type __bucket_count = this->bucket_count();
546 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
547 _M_check_rehashed(__bucket_count);
548 return iterator(__next, this);
552 _M_base() noexcept { return *this; }
555 _M_base() const noexcept { return *this; }
559 _M_check_rehashed(size_type __prev_count)
561 if (__prev_count != this->bucket_count())
562 this->_M_invalidate_locals();
566 template<typename _Key, typename _Tp, typename _Hash,
567 typename _Pred, typename _Alloc>
569 swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
570 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
571 noexcept(noexcept(__x.swap(__y)))
574 template<typename _Key, typename _Tp, typename _Hash,
575 typename _Pred, typename _Alloc>
577 operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
578 const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
579 { return __x._M_base() == __y._M_base(); }
581 template<typename _Key, typename _Tp, typename _Hash,
582 typename _Pred, typename _Alloc>
584 operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
585 const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
586 { return !(__x == __y); }
589 /// Class std::unordered_multimap with safety/checking/debug instrumentation.
590 template<typename _Key, typename _Tp,
591 typename _Hash = std::hash<_Key>,
592 typename _Pred = std::equal_to<_Key>,
593 typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
594 class unordered_multimap
595 : public __gnu_debug::_Safe_container<
596 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>, _Alloc,
597 __gnu_debug::_Safe_unordered_container>,
598 public _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>
600 typedef _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash,
601 _Pred, _Alloc> _Base;
602 typedef __gnu_debug::_Safe_container<unordered_multimap,
603 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
604 typedef typename _Base::const_iterator _Base_const_iterator;
605 typedef typename _Base::iterator _Base_iterator;
606 typedef typename _Base::const_local_iterator _Base_const_local_iterator;
607 typedef typename _Base::local_iterator _Base_local_iterator;
610 typedef typename _Base::size_type size_type;
611 typedef typename _Base::hasher hasher;
612 typedef typename _Base::key_equal key_equal;
613 typedef typename _Base::allocator_type allocator_type;
615 typedef typename _Base::key_type key_type;
616 typedef typename _Base::value_type value_type;
618 typedef __gnu_debug::_Safe_iterator<
619 _Base_iterator, unordered_multimap> iterator;
620 typedef __gnu_debug::_Safe_iterator<
621 _Base_const_iterator, unordered_multimap> const_iterator;
622 typedef __gnu_debug::_Safe_local_iterator<
623 _Base_local_iterator, unordered_multimap> local_iterator;
624 typedef __gnu_debug::_Safe_local_iterator<
625 _Base_const_local_iterator, unordered_multimap> const_local_iterator;
627 unordered_multimap() = default;
630 unordered_multimap(size_type __n,
631 const hasher& __hf = hasher(),
632 const key_equal& __eql = key_equal(),
633 const allocator_type& __a = allocator_type())
634 : _Base(__n, __hf, __eql, __a) { }
636 template<typename _InputIterator>
637 unordered_multimap(_InputIterator __first, _InputIterator __last,
639 const hasher& __hf = hasher(),
640 const key_equal& __eql = key_equal(),
641 const allocator_type& __a = allocator_type())
642 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
644 __gnu_debug::__base(__last), __n,
645 __hf, __eql, __a) { }
647 unordered_multimap(const unordered_multimap&) = default;
649 unordered_multimap(const _Base& __x)
652 unordered_multimap(unordered_multimap&&) = default;
655 unordered_multimap(const allocator_type& __a)
658 unordered_multimap(const unordered_multimap& __umap,
659 const allocator_type& __a)
660 : _Base(__umap, __a) { }
662 unordered_multimap(unordered_multimap&& __umap,
663 const allocator_type& __a)
664 : _Safe(std::move(__umap._M_safe()), __a),
665 _Base(std::move(__umap._M_base()), __a) { }
667 unordered_multimap(initializer_list<value_type> __l,
669 const hasher& __hf = hasher(),
670 const key_equal& __eql = key_equal(),
671 const allocator_type& __a = allocator_type())
672 : _Base(__l, __n, __hf, __eql, __a) { }
674 unordered_multimap(size_type __n, const allocator_type& __a)
675 : unordered_multimap(__n, hasher(), key_equal(), __a)
678 unordered_multimap(size_type __n, const hasher& __hf,
679 const allocator_type& __a)
680 : unordered_multimap(__n, __hf, key_equal(), __a)
683 template<typename _InputIterator>
684 unordered_multimap(_InputIterator __first, _InputIterator __last,
686 const allocator_type& __a)
687 : unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a)
690 template<typename _InputIterator>
691 unordered_multimap(_InputIterator __first, _InputIterator __last,
692 size_type __n, const hasher& __hf,
693 const allocator_type& __a)
694 : unordered_multimap(__first, __last, __n, __hf, key_equal(), __a)
697 unordered_multimap(initializer_list<value_type> __l,
699 const allocator_type& __a)
700 : unordered_multimap(__l, __n, hasher(), key_equal(), __a)
703 unordered_multimap(initializer_list<value_type> __l,
704 size_type __n, const hasher& __hf,
705 const allocator_type& __a)
706 : unordered_multimap(__l, __n, __hf, key_equal(), __a)
709 ~unordered_multimap() = default;
712 operator=(const unordered_multimap&) = default;
715 operator=(unordered_multimap&&) = default;
718 operator=(initializer_list<value_type> __l)
720 this->_M_base() = __l;
721 this->_M_invalidate_all();
726 swap(unordered_multimap& __x)
727 noexcept( noexcept(declval<_Base&>().swap(__x)) )
737 this->_M_invalidate_all();
742 { return iterator(_Base::begin(), this); }
745 begin() const noexcept
746 { return const_iterator(_Base::begin(), this); }
750 { return iterator(_Base::end(), this); }
754 { return const_iterator(_Base::end(), this); }
757 cbegin() const noexcept
758 { return const_iterator(_Base::begin(), this); }
761 cend() const noexcept
762 { return const_iterator(_Base::end(), this); }
768 __glibcxx_check_bucket_index(__b);
769 return local_iterator(_Base::begin(__b), this);
775 __glibcxx_check_bucket_index(__b);
776 return local_iterator(_Base::end(__b), this);
780 begin(size_type __b) const
782 __glibcxx_check_bucket_index(__b);
783 return const_local_iterator(_Base::begin(__b), this);
787 end(size_type __b) const
789 __glibcxx_check_bucket_index(__b);
790 return const_local_iterator(_Base::end(__b), this);
794 cbegin(size_type __b) const
796 __glibcxx_check_bucket_index(__b);
797 return const_local_iterator(_Base::cbegin(__b), this);
801 cend(size_type __b) const
803 __glibcxx_check_bucket_index(__b);
804 return const_local_iterator(_Base::cend(__b), this);
808 bucket_size(size_type __b) const
810 __glibcxx_check_bucket_index(__b);
811 return _Base::bucket_size(__b);
815 max_load_factor() const noexcept
816 { return _Base::max_load_factor(); }
819 max_load_factor(float __f)
821 __glibcxx_check_max_load_factor(__f);
822 _Base::max_load_factor(__f);
825 template<typename... _Args>
827 emplace(_Args&&... __args)
829 size_type __bucket_count = this->bucket_count();
831 = _Base::emplace(std::forward<_Args>(__args)...);
832 _M_check_rehashed(__bucket_count);
833 return iterator(__it, this);
836 template<typename... _Args>
838 emplace_hint(const_iterator __hint, _Args&&... __args)
840 __glibcxx_check_insert(__hint);
841 size_type __bucket_count = this->bucket_count();
842 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
843 std::forward<_Args>(__args)...);
844 _M_check_rehashed(__bucket_count);
845 return iterator(__it, this);
849 insert(const value_type& __obj)
851 size_type __bucket_count = this->bucket_count();
852 _Base_iterator __it = _Base::insert(__obj);
853 _M_check_rehashed(__bucket_count);
854 return iterator(__it, this);
858 insert(const_iterator __hint, const value_type& __obj)
860 __glibcxx_check_insert(__hint);
861 size_type __bucket_count = this->bucket_count();
862 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
863 _M_check_rehashed(__bucket_count);
864 return iterator(__it, this);
867 template<typename _Pair, typename = typename
868 std::enable_if<std::is_constructible<value_type,
869 _Pair&&>::value>::type>
871 insert(_Pair&& __obj)
873 size_type __bucket_count = this->bucket_count();
874 _Base_iterator __it = _Base::insert(std::forward<_Pair>(__obj));
875 _M_check_rehashed(__bucket_count);
876 return iterator(__it, this);
879 template<typename _Pair, typename = typename
880 std::enable_if<std::is_constructible<value_type,
881 _Pair&&>::value>::type>
883 insert(const_iterator __hint, _Pair&& __obj)
885 __glibcxx_check_insert(__hint);
886 size_type __bucket_count = this->bucket_count();
887 _Base_iterator __it =
888 _Base::insert(__hint.base(), std::forward<_Pair>(__obj));
889 _M_check_rehashed(__bucket_count);
890 return iterator(__it, this);
894 insert(std::initializer_list<value_type> __l)
895 { _Base::insert(__l); }
897 template<typename _InputIterator>
899 insert(_InputIterator __first, _InputIterator __last)
901 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
902 __glibcxx_check_valid_range2(__first, __last, __dist);
903 size_type __bucket_count = this->bucket_count();
905 if (__dist.second >= __gnu_debug::__dp_sign)
906 _Base::insert(__gnu_debug::__unsafe(__first),
907 __gnu_debug::__unsafe(__last));
909 _Base::insert(__first, __last);
911 _M_check_rehashed(__bucket_count);
915 find(const key_type& __key)
916 { return iterator(_Base::find(__key), this); }
919 find(const key_type& __key) const
920 { return const_iterator(_Base::find(__key), this); }
922 std::pair<iterator, iterator>
923 equal_range(const key_type& __key)
925 std::pair<_Base_iterator, _Base_iterator> __res =
926 _Base::equal_range(__key);
927 return std::make_pair(iterator(__res.first, this),
928 iterator(__res.second, this));
931 std::pair<const_iterator, const_iterator>
932 equal_range(const key_type& __key) const
934 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
935 _Base::equal_range(__key);
936 return std::make_pair(const_iterator(__res.first, this),
937 const_iterator(__res.second, this));
941 erase(const key_type& __key)
944 size_type __bucket_count = this->bucket_count();
945 std::pair<_Base_iterator, _Base_iterator> __pair =
946 _Base::equal_range(__key);
947 for (_Base_iterator __victim = __pair.first; __victim != __pair.second;)
949 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
950 { return __it == __victim; });
951 this->_M_invalidate_local_if(
952 [__victim](_Base_const_local_iterator __it)
953 { return __it._M_curr() == __victim._M_cur; });
954 _Base::erase(__victim++);
957 _M_check_rehashed(__bucket_count);
962 erase(const_iterator __it)
964 __glibcxx_check_erase(__it);
965 _Base_const_iterator __victim = __it.base();
966 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
967 { return __it == __victim; });
968 this->_M_invalidate_local_if(
969 [__victim](_Base_const_local_iterator __it)
970 { return __it._M_curr() == __victim._M_cur; });
971 size_type __bucket_count = this->bucket_count();
972 _Base_iterator __next = _Base::erase(__it.base());
973 _M_check_rehashed(__bucket_count);
974 return iterator(__next, this);
979 { return erase(const_iterator(__it)); }
982 erase(const_iterator __first, const_iterator __last)
984 __glibcxx_check_erase_range(__first, __last);
985 for (_Base_const_iterator __tmp = __first.base();
986 __tmp != __last.base(); ++__tmp)
988 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
989 _M_message(__gnu_debug::__msg_valid_range)
990 ._M_iterator(__first, "first")
991 ._M_iterator(__last, "last"));
992 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
993 { return __it == __tmp; });
994 this->_M_invalidate_local_if(
995 [__tmp](_Base_const_local_iterator __it)
996 { return __it._M_curr() == __tmp._M_cur; });
998 size_type __bucket_count = this->bucket_count();
999 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
1000 _M_check_rehashed(__bucket_count);
1001 return iterator(__next, this);
1005 _M_base() noexcept { return *this; }
1008 _M_base() const noexcept { return *this; }
1012 _M_check_rehashed(size_type __prev_count)
1014 if (__prev_count != this->bucket_count())
1015 this->_M_invalidate_locals();
1019 template<typename _Key, typename _Tp, typename _Hash,
1020 typename _Pred, typename _Alloc>
1022 swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
1023 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
1024 noexcept(noexcept(__x.swap(__y)))
1027 template<typename _Key, typename _Tp, typename _Hash,
1028 typename _Pred, typename _Alloc>
1030 operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
1031 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
1032 { return __x._M_base() == __y._M_base(); }
1034 template<typename _Key, typename _Tp, typename _Hash,
1035 typename _Pred, typename _Alloc>
1037 operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
1038 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
1039 { return !(__x == __y); }
1041 } // namespace __debug