1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_SRC_ZONE_ZONE_CONTAINERS_H_ 6 #define V8_SRC_ZONE_ZONE_CONTAINERS_H_ 7 8 #include <deque> 9 #include <list> 10 #include <map> 11 #include <queue> 12 #include <set> 13 #include <stack> 14 #include <vector> 15 16 #include "src/zone/zone-allocator.h" 17 18 namespace v8 { 19 namespace internal { 20 21 // A wrapper subclass for std::vector to make it easy to construct one 22 // that uses a zone allocator. 23 template <typename T> 24 class ZoneVector : public std::vector<T, zone_allocator<T>> { 25 public: 26 // Constructs an empty vector. 27 explicit ZoneVector(Zone* zone) 28 : std::vector<T, zone_allocator<T>>(zone_allocator<T>(zone)) {} 29 30 // Constructs a new vector and fills it with {size} elements, each 31 // constructed via the default constructor. 32 ZoneVector(size_t size, Zone* zone) 33 : std::vector<T, zone_allocator<T>>(size, T(), zone_allocator<T>(zone)) {} 34 35 // Constructs a new vector and fills it with {size} elements, each 36 // having the value {def}. 37 ZoneVector(size_t size, T def, Zone* zone) 38 : std::vector<T, zone_allocator<T>>(size, def, zone_allocator<T>(zone)) {} 39 40 // Constructs a new vector and fills it with the contents of the range 41 // [first, last). 42 template <class InputIt> 43 ZoneVector(InputIt first, InputIt last, Zone* zone) 44 : std::vector<T, zone_allocator<T>>(first, last, 45 zone_allocator<T>(zone)) {} 46 }; 47 48 // A wrapper subclass std::deque to make it easy to construct one 49 // that uses a zone allocator. 50 template <typename T> 51 class ZoneDeque : public std::deque<T, zone_allocator<T>> { 52 public: 53 // Constructs an empty deque. 54 explicit ZoneDeque(Zone* zone) 55 : std::deque<T, zone_allocator<T>>(zone_allocator<T>(zone)) {} 56 }; 57 58 // A wrapper subclass std::list to make it easy to construct one 59 // that uses a zone allocator. 60 // TODO(mstarzinger): This should be renamed to ZoneList once we got rid of our 61 // own home-grown ZoneList that actually is a ZoneVector. 62 template <typename T> 63 class ZoneLinkedList : public std::list<T, zone_allocator<T>> { 64 public: 65 // Constructs an empty list. 66 explicit ZoneLinkedList(Zone* zone) 67 : std::list<T, zone_allocator<T>>(zone_allocator<T>(zone)) {} 68 }; 69 70 // A wrapper subclass std::priority_queue to make it easy to construct one 71 // that uses a zone allocator. 72 template <typename T, typename Compare = std::less<T>> 73 class ZonePriorityQueue 74 : public std::priority_queue<T, ZoneVector<T>, Compare> { 75 public: 76 // Constructs an empty list. 77 explicit ZonePriorityQueue(Zone* zone) 78 : std::priority_queue<T, ZoneVector<T>, Compare>(Compare(), 79 ZoneVector<T>(zone)) {} 80 }; 81 82 // A wrapper subclass for std::queue to make it easy to construct one 83 // that uses a zone allocator. 84 template <typename T> 85 class ZoneQueue : public std::queue<T, ZoneDeque<T>> { 86 public: 87 // Constructs an empty queue. 88 explicit ZoneQueue(Zone* zone) 89 : std::queue<T, ZoneDeque<T>>(ZoneDeque<T>(zone)) {} 90 }; 91 92 // A wrapper subclass for std::stack to make it easy to construct one that uses 93 // a zone allocator. 94 template <typename T> 95 class ZoneStack : public std::stack<T, ZoneDeque<T>> { 96 public: 97 // Constructs an empty stack. 98 explicit ZoneStack(Zone* zone) 99 : std::stack<T, ZoneDeque<T>>(ZoneDeque<T>(zone)) {} 100 }; 101 102 // A wrapper subclass for std::set to make it easy to construct one that uses 103 // a zone allocator. 104 template <typename K, typename Compare = std::less<K>> 105 class ZoneSet : public std::set<K, Compare, zone_allocator<K>> { 106 public: 107 // Constructs an empty set. 108 explicit ZoneSet(Zone* zone) 109 : std::set<K, Compare, zone_allocator<K>>(Compare(), 110 zone_allocator<K>(zone)) {} 111 }; 112 113 // A wrapper subclass for std::map to make it easy to construct one that uses 114 // a zone allocator. 115 template <typename K, typename V, typename Compare = std::less<K>> 116 class ZoneMap 117 : public std::map<K, V, Compare, zone_allocator<std::pair<const K, V>>> { 118 public: 119 // Constructs an empty map. 120 explicit ZoneMap(Zone* zone) 121 : std::map<K, V, Compare, zone_allocator<std::pair<const K, V>>>( 122 Compare(), zone_allocator<std::pair<const K, V>>(zone)) {} 123 }; 124 125 // A wrapper subclass for std::multimap to make it easy to construct one that 126 // uses a zone allocator. 127 template <typename K, typename V, typename Compare = std::less<K>> 128 class ZoneMultimap 129 : public std::multimap<K, V, Compare, 130 zone_allocator<std::pair<const K, V>>> { 131 public: 132 // Constructs an empty multimap. 133 explicit ZoneMultimap(Zone* zone) 134 : std::multimap<K, V, Compare, zone_allocator<std::pair<const K, V>>>( 135 Compare(), zone_allocator<std::pair<const K, V>>(zone)) {} 136 }; 137 138 // Typedefs to shorten commonly used vectors. 139 typedef ZoneVector<bool> BoolVector; 140 typedef ZoneVector<int> IntVector; 141 142 } // namespace internal 143 } // namespace v8 144 145 #endif // V8_SRC_ZONE_ZONE_CONTAINERS_H_ 146
