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1 // Copyright 2014 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_ZONE_ALLOCATOR_H_ | 5 #ifndef V8_SRC_ZONE_ZONE_ALLOCATOR_H_ |
marja
2016/09/19 08:05:11
Ditto
heimbuef
2016/09/19 10:47:51
Done.
| |
6 #define V8_ZONE_ALLOCATOR_H_ | 6 #define V8_SRC_ZONE_ZONE_ALLOCATOR_H_ |
7 | 7 |
8 #include <limits> | 8 #include <limits> |
9 | 9 |
10 #include "src/zone.h" | 10 #include "src/zone/zone.h" |
11 | 11 |
12 namespace v8 { | 12 namespace v8 { |
13 namespace internal { | 13 namespace internal { |
14 | 14 |
15 template<typename T> | 15 template <typename T> |
16 class zone_allocator { | 16 class zone_allocator { |
17 public: | 17 public: |
18 typedef T* pointer; | 18 typedef T* pointer; |
19 typedef const T* const_pointer; | 19 typedef const T* const_pointer; |
20 typedef T& reference; | 20 typedef T& reference; |
21 typedef const T& const_reference; | 21 typedef const T& const_reference; |
22 typedef T value_type; | 22 typedef T value_type; |
23 typedef size_t size_type; | 23 typedef size_t size_type; |
24 typedef ptrdiff_t difference_type; | 24 typedef ptrdiff_t difference_type; |
25 template<class O> struct rebind { | 25 template <class O> |
26 struct rebind { | |
26 typedef zone_allocator<O> other; | 27 typedef zone_allocator<O> other; |
27 }; | 28 }; |
28 | 29 |
29 explicit zone_allocator(Zone* zone) throw() : zone_(zone) {} | 30 explicit zone_allocator(Zone* zone) throw() : zone_(zone) {} |
30 explicit zone_allocator(const zone_allocator& other) throw() | 31 explicit zone_allocator(const zone_allocator& other) throw() |
31 : zone_(other.zone_) {} | 32 : zone_(other.zone_) {} |
32 template<typename U> zone_allocator(const zone_allocator<U>& other) throw() | 33 template <typename U> |
33 : zone_(other.zone_) {} | 34 zone_allocator(const zone_allocator<U>& other) throw() : zone_(other.zone_) {} |
34 template<typename U> friend class zone_allocator; | 35 template <typename U> |
36 friend class zone_allocator; | |
35 | 37 |
36 pointer address(reference x) const {return &x;} | 38 pointer address(reference x) const { return &x; } |
37 const_pointer address(const_reference x) const {return &x;} | 39 const_pointer address(const_reference x) const { return &x; } |
38 | 40 |
39 pointer allocate(size_type n, const void* hint = 0) { | 41 pointer allocate(size_type n, const void* hint = 0) { |
40 return static_cast<pointer>(zone_->NewArray<value_type>( | 42 return static_cast<pointer>( |
41 static_cast<int>(n))); | 43 zone_->NewArray<value_type>(static_cast<int>(n))); |
42 } | 44 } |
43 void deallocate(pointer p, size_type) { /* noop for Zones */ } | 45 void deallocate(pointer p, size_type) { /* noop for Zones */ |
46 } | |
44 | 47 |
45 size_type max_size() const throw() { | 48 size_type max_size() const throw() { |
46 return std::numeric_limits<int>::max() / sizeof(value_type); | 49 return std::numeric_limits<int>::max() / sizeof(value_type); |
47 } | 50 } |
48 void construct(pointer p, const T& val) { | 51 void construct(pointer p, const T& val) { |
49 new(static_cast<void*>(p)) T(val); | 52 new (static_cast<void*>(p)) T(val); |
50 } | 53 } |
51 void destroy(pointer p) { p->~T(); } | 54 void destroy(pointer p) { p->~T(); } |
52 | 55 |
53 bool operator==(zone_allocator const& other) const { | 56 bool operator==(zone_allocator const& other) const { |
54 return zone_ == other.zone_; | 57 return zone_ == other.zone_; |
55 } | 58 } |
56 bool operator!=(zone_allocator const& other) const { | 59 bool operator!=(zone_allocator const& other) const { |
57 return zone_ != other.zone_; | 60 return zone_ != other.zone_; |
58 } | 61 } |
59 | 62 |
60 Zone* zone() { return zone_; } | 63 Zone* zone() { return zone_; } |
61 | 64 |
62 private: | 65 private: |
63 zone_allocator(); | 66 zone_allocator(); |
64 Zone* zone_; | 67 Zone* zone_; |
65 }; | 68 }; |
66 | 69 |
67 typedef zone_allocator<bool> ZoneBoolAllocator; | 70 typedef zone_allocator<bool> ZoneBoolAllocator; |
68 typedef zone_allocator<int> ZoneIntAllocator; | 71 typedef zone_allocator<int> ZoneIntAllocator; |
69 } // namespace internal | 72 } // namespace internal |
70 } // namespace v8 | 73 } // namespace v8 |
71 | 74 |
72 #endif // V8_ZONE_ALLOCATOR_H_ | 75 #endif // V8_ZONE_ALLOCATOR_H_ |
marja
2016/09/19 08:05:11
Ditto
heimbuef
2016/09/19 10:47:51
Done.
| |
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