diff options
Diffstat (limited to 'cpp-btree/safe_btree_set.h')
-rw-r--r-- | cpp-btree/safe_btree_set.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/cpp-btree/safe_btree_set.h b/cpp-btree/safe_btree_set.h deleted file mode 100644 index a6cd541..0000000 --- a/cpp-btree/safe_btree_set.h +++ /dev/null @@ -1,88 +0,0 @@ -// Copyright 2013 Google Inc. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// The safe_btree_set<> is like btree_set<> except that it removes the caveat -// about insertion and deletion invalidating existing iterators at a small cost -// in making iterators larger and slower. -// -// Revalidation occurs whenever an iterator is accessed. References -// and pointers returned by safe_btree_map<> iterators are not stable, -// they are potentially invalidated by any non-const method on the set. -// -// BEGIN INCORRECT EXAMPLE -// for (auto i = safe_set->begin(); i != safe_set->end(); ++i) { -// const T &value = *i; // DO NOT DO THIS -// [code that modifies safe_set and uses value]; -// } -// END INCORRECT EXAMPLE - -#ifndef UTIL_BTREE_SAFE_BTREE_SET_H__ -#define UTIL_BTREE_SAFE_BTREE_SET_H__ - -#include <functional> -#include <memory> - -#include "btree_container.h" -#include "btree_set.h" -#include "safe_btree.h" - -namespace btree { - -// The safe_btree_set class is needed mainly for its constructors. -template <typename Key, - typename Compare = std::less<Key>, - typename Alloc = std::allocator<Key>, - int TargetNodeSize = 256> -class safe_btree_set : public btree_unique_container< - safe_btree<btree_set_params<Key, Compare, Alloc, TargetNodeSize> > > { - - typedef safe_btree_set<Key, Compare, Alloc, TargetNodeSize> self_type; - typedef btree_set_params<Key, Compare, Alloc, TargetNodeSize> params_type; - typedef safe_btree<params_type> btree_type; - typedef btree_unique_container<btree_type> super_type; - - public: - typedef typename btree_type::key_compare key_compare; - typedef typename btree_type::allocator_type allocator_type; - - public: - // Default constructor. - safe_btree_set(const key_compare &comp = key_compare(), - const allocator_type &alloc = allocator_type()) - : super_type(comp, alloc) { - } - - // Copy constructor. - safe_btree_set(const self_type &x) - : super_type(x) { - } - - // Range constructor. - template <class InputIterator> - safe_btree_set(InputIterator b, InputIterator e, - const key_compare &comp = key_compare(), - const allocator_type &alloc = allocator_type()) - : super_type(b, e, comp, alloc) { - } -}; - -template <typename K, typename C, typename A, int N> -inline void swap(safe_btree_set<K, C, A, N> &x, - safe_btree_set<K, C, A, N> &y) { - x.swap(y); -} - -} // namespace btree - -#endif // UTIL_BTREE_SAFE_BTREE_SET_H__ |