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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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_HEAP_HEAP_INL_H_ | 5 #ifndef V8_HEAP_HEAP_INL_H_ |
| 6 #define V8_HEAP_HEAP_INL_H_ | 6 #define V8_HEAP_HEAP_INL_H_ |
| 7 | 7 |
| 8 #include <cmath> | 8 #include <cmath> |
| 9 | 9 |
| 10 #include "src/base/platform/platform.h" | 10 #include "src/base/platform/platform.h" |
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| 116 return AllocateInternalizedStringImpl<false>(t, chars, hash_field); | 116 return AllocateInternalizedStringImpl<false>(t, chars, hash_field); |
| 117 } | 117 } |
| 118 | 118 |
| 119 | 119 |
| 120 AllocationResult Heap::AllocateOneByteInternalizedString( | 120 AllocationResult Heap::AllocateOneByteInternalizedString( |
| 121 Vector<const uint8_t> str, uint32_t hash_field) { | 121 Vector<const uint8_t> str, uint32_t hash_field) { |
| 122 CHECK_GE(String::kMaxLength, str.length()); | 122 CHECK_GE(String::kMaxLength, str.length()); |
| 123 // Compute map and object size. | 123 // Compute map and object size. |
| 124 Map* map = one_byte_internalized_string_map(); | 124 Map* map = one_byte_internalized_string_map(); |
| 125 int size = SeqOneByteString::SizeFor(str.length()); | 125 int size = SeqOneByteString::SizeFor(str.length()); |
| 126 AllocationSpace space = SelectSpace(size, TENURED); |
| 126 | 127 |
| 127 // Allocate string. | 128 // Allocate string. |
| 128 HeapObject* result = nullptr; | 129 HeapObject* result = nullptr; |
| 129 { | 130 { |
| 130 AllocationResult allocation = AllocateRaw(size, OLD_SPACE, OLD_SPACE); | 131 AllocationResult allocation = AllocateRaw(size, space, OLD_SPACE); |
| 131 if (!allocation.To(&result)) return allocation; | 132 if (!allocation.To(&result)) return allocation; |
| 132 } | 133 } |
| 133 | 134 |
| 134 // String maps are all immortal immovable objects. | 135 // String maps are all immortal immovable objects. |
| 135 result->set_map_no_write_barrier(map); | 136 result->set_map_no_write_barrier(map); |
| 136 // Set length and hash fields of the allocated string. | 137 // Set length and hash fields of the allocated string. |
| 137 String* answer = String::cast(result); | 138 String* answer = String::cast(result); |
| 138 answer->set_length(str.length()); | 139 answer->set_length(str.length()); |
| 139 answer->set_hash_field(hash_field); | 140 answer->set_hash_field(hash_field); |
| 140 | 141 |
| 141 DCHECK_EQ(size, answer->Size()); | 142 DCHECK_EQ(size, answer->Size()); |
| 142 | 143 |
| 143 // Fill in the characters. | 144 // Fill in the characters. |
| 144 MemCopy(answer->address() + SeqOneByteString::kHeaderSize, str.start(), | 145 MemCopy(answer->address() + SeqOneByteString::kHeaderSize, str.start(), |
| 145 str.length()); | 146 str.length()); |
| 146 | 147 |
| 147 return answer; | 148 return answer; |
| 148 } | 149 } |
| 149 | 150 |
| 150 | 151 |
| 151 AllocationResult Heap::AllocateTwoByteInternalizedString(Vector<const uc16> str, | 152 AllocationResult Heap::AllocateTwoByteInternalizedString(Vector<const uc16> str, |
| 152 uint32_t hash_field) { | 153 uint32_t hash_field) { |
| 153 CHECK_GE(String::kMaxLength, str.length()); | 154 CHECK_GE(String::kMaxLength, str.length()); |
| 154 // Compute map and object size. | 155 // Compute map and object size. |
| 155 Map* map = internalized_string_map(); | 156 Map* map = internalized_string_map(); |
| 156 int size = SeqTwoByteString::SizeFor(str.length()); | 157 int size = SeqTwoByteString::SizeFor(str.length()); |
| 158 AllocationSpace space = SelectSpace(size, TENURED); |
| 157 | 159 |
| 158 // Allocate string. | 160 // Allocate string. |
| 159 HeapObject* result = nullptr; | 161 HeapObject* result = nullptr; |
| 160 { | 162 { |
| 161 AllocationResult allocation = AllocateRaw(size, OLD_SPACE, OLD_SPACE); | 163 AllocationResult allocation = AllocateRaw(size, space, OLD_SPACE); |
| 162 if (!allocation.To(&result)) return allocation; | 164 if (!allocation.To(&result)) return allocation; |
| 163 } | 165 } |
| 164 | 166 |
| 165 result->set_map(map); | 167 result->set_map(map); |
| 166 // Set length and hash fields of the allocated string. | 168 // Set length and hash fields of the allocated string. |
| 167 String* answer = String::cast(result); | 169 String* answer = String::cast(result); |
| 168 answer->set_length(str.length()); | 170 answer->set_length(str.length()); |
| 169 answer->set_hash_field(hash_field); | 171 answer->set_hash_field(hash_field); |
| 170 | 172 |
| 171 DCHECK_EQ(size, answer->Size()); | 173 DCHECK_EQ(size, answer->Size()); |
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| 197 DCHECK(gc_state_ == NOT_IN_GC); | 199 DCHECK(gc_state_ == NOT_IN_GC); |
| 198 #ifdef DEBUG | 200 #ifdef DEBUG |
| 199 if (FLAG_gc_interval >= 0 && !always_allocate() && | 201 if (FLAG_gc_interval >= 0 && !always_allocate() && |
| 200 Heap::allocation_timeout_-- <= 0) { | 202 Heap::allocation_timeout_-- <= 0) { |
| 201 return AllocationResult::Retry(space); | 203 return AllocationResult::Retry(space); |
| 202 } | 204 } |
| 203 isolate_->counters()->objs_since_last_full()->Increment(); | 205 isolate_->counters()->objs_since_last_full()->Increment(); |
| 204 isolate_->counters()->objs_since_last_young()->Increment(); | 206 isolate_->counters()->objs_since_last_young()->Increment(); |
| 205 #endif | 207 #endif |
| 206 | 208 |
| 207 bool large_object = size_in_bytes > Page::kMaxRegularHeapObjectSize; | |
| 208 HeapObject* object = nullptr; | 209 HeapObject* object = nullptr; |
| 209 AllocationResult allocation; | 210 AllocationResult allocation; |
| 210 if (NEW_SPACE == space) { | 211 if (NEW_SPACE == space) { |
| 211 if (!large_object) { | 212 allocation = new_space_.AllocateRaw(size_in_bytes, alignment); |
| 212 allocation = new_space_.AllocateRaw(size_in_bytes, alignment); | 213 if (always_allocate() && allocation.IsRetry() && retry_space != NEW_SPACE) { |
| 213 if (always_allocate() && allocation.IsRetry() && | 214 space = retry_space; |
| 214 retry_space != NEW_SPACE) { | 215 } else { |
| 215 space = retry_space; | 216 if (allocation.To(&object)) { |
| 216 } else { | 217 OnAllocationEvent(object, size_in_bytes); |
| 217 if (allocation.To(&object)) { | |
| 218 OnAllocationEvent(object, size_in_bytes); | |
| 219 } | |
| 220 return allocation; | |
| 221 } | 218 } |
| 222 } else { | 219 return allocation; |
| 223 space = LO_SPACE; | |
| 224 } | 220 } |
| 225 } | 221 } |
| 226 | 222 |
| 227 if (OLD_SPACE == space) { | 223 if (OLD_SPACE == space) { |
| 228 if (!large_object) { | 224 allocation = old_space_->AllocateRaw(size_in_bytes, alignment); |
| 229 allocation = old_space_->AllocateRaw(size_in_bytes, alignment); | |
| 230 } else { | |
| 231 allocation = lo_space_->AllocateRaw(size_in_bytes, NOT_EXECUTABLE); | |
| 232 } | |
| 233 } else if (CODE_SPACE == space) { | 225 } else if (CODE_SPACE == space) { |
| 234 if (!large_object) { | 226 if (size_in_bytes <= code_space()->AreaSize()) { |
| 235 allocation = code_space_->AllocateRawUnaligned(size_in_bytes); | 227 allocation = code_space_->AllocateRawUnaligned(size_in_bytes); |
| 236 } else { | 228 } else { |
| 229 // Large code objects are allocated in large object space. |
| 237 allocation = lo_space_->AllocateRaw(size_in_bytes, EXECUTABLE); | 230 allocation = lo_space_->AllocateRaw(size_in_bytes, EXECUTABLE); |
| 238 } | 231 } |
| 239 } else if (LO_SPACE == space) { | 232 } else if (LO_SPACE == space) { |
| 240 DCHECK(large_object); | |
| 241 allocation = lo_space_->AllocateRaw(size_in_bytes, NOT_EXECUTABLE); | 233 allocation = lo_space_->AllocateRaw(size_in_bytes, NOT_EXECUTABLE); |
| 242 } else if (MAP_SPACE == space) { | 234 } else { |
| 235 DCHECK(MAP_SPACE == space); |
| 243 allocation = map_space_->AllocateRawUnaligned(size_in_bytes); | 236 allocation = map_space_->AllocateRawUnaligned(size_in_bytes); |
| 244 } | 237 } |
| 245 if (allocation.To(&object)) { | 238 if (allocation.To(&object)) { |
| 246 OnAllocationEvent(object, size_in_bytes); | 239 OnAllocationEvent(object, size_in_bytes); |
| 247 } else { | 240 } else { |
| 248 old_gen_exhausted_ = true; | 241 old_gen_exhausted_ = true; |
| 249 } | 242 } |
| 250 return allocation; | 243 return allocation; |
| 251 } | 244 } |
| 252 | 245 |
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| 748 | 741 |
| 749 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) { | 742 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) { |
| 750 for (Object** current = start; current < end; current++) { | 743 for (Object** current = start; current < end; current++) { |
| 751 CHECK((*current)->IsSmi()); | 744 CHECK((*current)->IsSmi()); |
| 752 } | 745 } |
| 753 } | 746 } |
| 754 } | 747 } |
| 755 } // namespace v8::internal | 748 } // namespace v8::internal |
| 756 | 749 |
| 757 #endif // V8_HEAP_HEAP_INL_H_ | 750 #endif // V8_HEAP_HEAP_INL_H_ |
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