V8 Project
zone-containers.h
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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_ZONE_CONTAINERS_H_
6 #define V8_ZONE_CONTAINERS_H_
7 
8 #include <deque>
9 #include <queue>
10 #include <vector>
11 
12 #include "src/zone-allocator.h"
13 
14 namespace v8 {
15 namespace internal {
16 
17 // A wrapper subclass for std::vector to make it easy to construct one
18 // that uses a zone allocator.
19 template <typename T>
20 class ZoneVector : public std::vector<T, zone_allocator<T> > {
21  public:
22  // Constructs an empty vector.
23  explicit ZoneVector(Zone* zone)
24  : std::vector<T, zone_allocator<T> >(zone_allocator<T>(zone)) {}
25 
26  // Constructs a new vector and fills it with {size} elements, each
27  // having the value {def}.
28  ZoneVector(int size, T def, Zone* zone)
29  : std::vector<T, zone_allocator<T> >(size, def, zone_allocator<T>(zone)) {
30  }
31 };
32 
33 // A wrapper subclass std::deque to make it easy to construct one
34 // that uses a zone allocator.
35 template <typename T>
36 class ZoneDeque : public std::deque<T, zone_allocator<T> > {
37  public:
38  explicit ZoneDeque(Zone* zone)
39  : std::deque<T, zone_allocator<T> >(zone_allocator<T>(zone)) {}
40 };
41 
42 // A wrapper subclass for std::queue to make it easy to construct one
43 // that uses a zone allocator.
44 template <typename T>
45 class ZoneQueue : public std::queue<T, std::deque<T, zone_allocator<T> > > {
46  public:
47  // Constructs an empty queue.
48  explicit ZoneQueue(Zone* zone)
49  : std::queue<T, std::deque<T, zone_allocator<T> > >(
50  std::deque<T, zone_allocator<T> >(zone_allocator<T>(zone))) {}
51 };
52 
53 // Typedefs to shorten commonly used vectors.
56 } } // namespace v8::internal
57 
58 #endif // V8_ZONE_CONTAINERS_H_
ZoneVector(int size, T def, Zone *zone)
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ZoneVector< bool > BoolVector
ZoneVector< int > IntVector
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