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Side by Side Diff: runtime/vm/zone.h

Issue 2481873005: clang-format runtime/vm (Closed)
Patch Set: Merge Created 4 years, 1 month ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef RUNTIME_VM_ZONE_H_ 5 #ifndef RUNTIME_VM_ZONE_H_
6 #define RUNTIME_VM_ZONE_H_ 6 #define RUNTIME_VM_ZONE_H_
7 7
8 #include "platform/utils.h" 8 #include "platform/utils.h"
9 #include "vm/allocation.h" 9 #include "vm/allocation.h"
10 #include "vm/handles.h" 10 #include "vm/handles.h"
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91 // Zap value used to indicate uninitialized zone area (debug purposes). 91 // Zap value used to indicate uninitialized zone area (debug purposes).
92 static const unsigned char kZapUninitializedByte = 0xab; 92 static const unsigned char kZapUninitializedByte = 0xab;
93 93
94 // Expand the zone to accommodate an allocation of 'size' bytes. 94 // Expand the zone to accommodate an allocation of 'size' bytes.
95 uword AllocateExpand(intptr_t size); 95 uword AllocateExpand(intptr_t size);
96 96
97 // Allocate a large segment. 97 // Allocate a large segment.
98 uword AllocateLargeSegment(intptr_t size); 98 uword AllocateLargeSegment(intptr_t size);
99 99
100 // Insert zone into zone chain, after current_zone. 100 // Insert zone into zone chain, after current_zone.
101 void Link(Zone* current_zone) { 101 void Link(Zone* current_zone) { previous_ = current_zone; }
102 previous_ = current_zone;
103 }
104 102
105 // Delete all objects and free all memory allocated in the zone. 103 // Delete all objects and free all memory allocated in the zone.
106 void DeleteAll(); 104 void DeleteAll();
107 105
108 // Does not actually free any memory. Enables templated containers like 106 // Does not actually free any memory. Enables templated containers like
109 // BaseGrowableArray to use different allocators. 107 // BaseGrowableArray to use different allocators.
110 template <class ElementType> 108 template <class ElementType>
111 void Free(ElementType* old_array, intptr_t len) { 109 void Free(ElementType* old_array, intptr_t len) {
112 #ifdef DEBUG 110 #ifdef DEBUG
113 if (len > 0) { 111 if (len > 0) {
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149 Segment* large_segments_; 147 Segment* large_segments_;
150 148
151 // Structure for managing handles allocation. 149 // Structure for managing handles allocation.
152 VMHandles handles_; 150 VMHandles handles_;
153 151
154 // Used for chaining zones in order to allow unwinding of stacks. 152 // Used for chaining zones in order to allow unwinding of stacks.
155 Zone* previous_; 153 Zone* previous_;
156 154
157 friend class StackZone; 155 friend class StackZone;
158 friend class ApiZone; 156 friend class ApiZone;
159 template<typename T, typename B, typename Allocator> 157 template <typename T, typename B, typename Allocator>
160 friend class BaseGrowableArray; 158 friend class BaseGrowableArray;
161 template<typename T, typename B, typename Allocator> 159 template <typename T, typename B, typename Allocator>
162 friend class BaseDirectChainedHashMap; 160 friend class BaseDirectChainedHashMap;
163 DISALLOW_COPY_AND_ASSIGN(Zone); 161 DISALLOW_COPY_AND_ASSIGN(Zone);
164 }; 162 };
165 163
166 164
167 class StackZone : public StackResource { 165 class StackZone : public StackResource {
168 public: 166 public:
169 // Create an empty zone and set is at the current zone for the Thread. 167 // Create an empty zone and set is at the current zone for the Thread.
170 explicit StackZone(Thread* thread); 168 explicit StackZone(Thread* thread);
171 169
172 // Delete all memory associated with the zone. 170 // Delete all memory associated with the zone.
173 ~StackZone(); 171 ~StackZone();
174 172
175 // Compute the total size of this zone. This includes wasted space that is 173 // Compute the total size of this zone. This includes wasted space that is
176 // due to internal fragmentation in the segments. 174 // due to internal fragmentation in the segments.
177 intptr_t SizeInBytes() const { return zone_.SizeInBytes(); } 175 intptr_t SizeInBytes() const { return zone_.SizeInBytes(); }
178 176
179 Zone* GetZone() { return &zone_; } 177 Zone* GetZone() { return &zone_; }
180 178
181 private: 179 private:
182 Zone zone_; 180 Zone zone_;
183 181
184 template<typename T> friend class GrowableArray; 182 template <typename T>
185 template<typename T> friend class ZoneGrowableArray; 183 friend class GrowableArray;
184 template <typename T>
185 friend class ZoneGrowableArray;
186 186
187 DISALLOW_IMPLICIT_CONSTRUCTORS(StackZone); 187 DISALLOW_IMPLICIT_CONSTRUCTORS(StackZone);
188 }; 188 };
189 189
190 inline uword Zone::AllocUnsafe(intptr_t size) { 190 inline uword Zone::AllocUnsafe(intptr_t size) {
191 ASSERT(size >= 0); 191 ASSERT(size >= 0);
192 192
193 // Round up the requested size to fit the alignment. 193 // Round up the requested size to fit the alignment.
194 if (size > (kIntptrMax - kAlignment)) { 194 if (size > (kIntptrMax - kAlignment)) {
195 FATAL1("Zone::Alloc: 'size' is too large: size=%" Pd "", size); 195 FATAL1("Zone::Alloc: 'size' is too large: size=%" Pd "", size);
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244 position_ = Utils::RoundUp(new_end, kAlignment); 244 position_ = Utils::RoundUp(new_end, kAlignment);
245 return old_data; 245 return old_data;
246 } 246 }
247 } 247 }
248 if (new_len <= old_len) { 248 if (new_len <= old_len) {
249 return old_data; 249 return old_data;
250 } 250 }
251 ElementType* new_data = Alloc<ElementType>(new_len); 251 ElementType* new_data = Alloc<ElementType>(new_len);
252 if (old_data != 0) { 252 if (old_data != 0) {
253 memmove(reinterpret_cast<void*>(new_data), 253 memmove(reinterpret_cast<void*>(new_data),
254 reinterpret_cast<void*>(old_data), 254 reinterpret_cast<void*>(old_data), old_len * kElementSize);
255 old_len * kElementSize);
256 } 255 }
257 return new_data; 256 return new_data;
258 } 257 }
259 258
260 } // namespace dart 259 } // namespace dart
261 260
262 #endif // RUNTIME_VM_ZONE_H_ 261 #endif // RUNTIME_VM_ZONE_H_
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