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Side by Side Diff: src/heap-inl.h

Issue 22925004: Introduce Heap::SelectSpace helper for allocations. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed moar comments by Hannes Payer. Created 7 years, 3 months ago
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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 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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133 133
134 134
135 MaybeObject* Heap::AllocateOneByteInternalizedString(Vector<const uint8_t> str, 135 MaybeObject* Heap::AllocateOneByteInternalizedString(Vector<const uint8_t> str,
136 uint32_t hash_field) { 136 uint32_t hash_field) {
137 if (str.length() > SeqOneByteString::kMaxLength) { 137 if (str.length() > SeqOneByteString::kMaxLength) {
138 return Failure::OutOfMemoryException(0x2); 138 return Failure::OutOfMemoryException(0x2);
139 } 139 }
140 // Compute map and object size. 140 // Compute map and object size.
141 Map* map = ascii_internalized_string_map(); 141 Map* map = ascii_internalized_string_map();
142 int size = SeqOneByteString::SizeFor(str.length()); 142 int size = SeqOneByteString::SizeFor(str.length());
143 AllocationSpace space = SelectSpace(size, OLD_DATA_SPACE, TENURED);
143 144
144 // Allocate string. 145 // Allocate string.
145 Object* result; 146 Object* result;
146 { MaybeObject* maybe_result = (size > Page::kMaxNonCodeHeapObjectSize) 147 { MaybeObject* maybe_result = AllocateRaw(size, space, OLD_DATA_SPACE);
147 ? lo_space_->AllocateRaw(size, NOT_EXECUTABLE)
148 : old_data_space_->AllocateRaw(size);
149 if (!maybe_result->ToObject(&result)) return maybe_result; 148 if (!maybe_result->ToObject(&result)) return maybe_result;
150 } 149 }
151 150
152 // String maps are all immortal immovable objects. 151 // String maps are all immortal immovable objects.
153 reinterpret_cast<HeapObject*>(result)->set_map_no_write_barrier(map); 152 reinterpret_cast<HeapObject*>(result)->set_map_no_write_barrier(map);
154 // Set length and hash fields of the allocated string. 153 // Set length and hash fields of the allocated string.
155 String* answer = String::cast(result); 154 String* answer = String::cast(result);
156 answer->set_length(str.length()); 155 answer->set_length(str.length());
157 answer->set_hash_field(hash_field); 156 answer->set_hash_field(hash_field);
158 157
159 ASSERT_EQ(size, answer->Size()); 158 ASSERT_EQ(size, answer->Size());
160 159
161 // Fill in the characters. 160 // Fill in the characters.
162 OS::MemCopy(answer->address() + SeqOneByteString::kHeaderSize, 161 OS::MemCopy(answer->address() + SeqOneByteString::kHeaderSize,
163 str.start(), str.length()); 162 str.start(), str.length());
164 163
165 return answer; 164 return answer;
166 } 165 }
167 166
168 167
169 MaybeObject* Heap::AllocateTwoByteInternalizedString(Vector<const uc16> str, 168 MaybeObject* Heap::AllocateTwoByteInternalizedString(Vector<const uc16> str,
170 uint32_t hash_field) { 169 uint32_t hash_field) {
171 if (str.length() > SeqTwoByteString::kMaxLength) { 170 if (str.length() > SeqTwoByteString::kMaxLength) {
172 return Failure::OutOfMemoryException(0x3); 171 return Failure::OutOfMemoryException(0x3);
173 } 172 }
174 // Compute map and object size. 173 // Compute map and object size.
175 Map* map = internalized_string_map(); 174 Map* map = internalized_string_map();
176 int size = SeqTwoByteString::SizeFor(str.length()); 175 int size = SeqTwoByteString::SizeFor(str.length());
176 AllocationSpace space = SelectSpace(size, OLD_DATA_SPACE, TENURED);
177 177
178 // Allocate string. 178 // Allocate string.
179 Object* result; 179 Object* result;
180 { MaybeObject* maybe_result = (size > Page::kMaxNonCodeHeapObjectSize) 180 { MaybeObject* maybe_result = AllocateRaw(size, space, OLD_DATA_SPACE);
181 ? lo_space_->AllocateRaw(size, NOT_EXECUTABLE)
182 : old_data_space_->AllocateRaw(size);
183 if (!maybe_result->ToObject(&result)) return maybe_result; 181 if (!maybe_result->ToObject(&result)) return maybe_result;
184 } 182 }
185 183
186 reinterpret_cast<HeapObject*>(result)->set_map(map); 184 reinterpret_cast<HeapObject*>(result)->set_map(map);
187 // Set length and hash fields of the allocated string. 185 // Set length and hash fields of the allocated string.
188 String* answer = String::cast(result); 186 String* answer = String::cast(result);
189 answer->set_length(str.length()); 187 answer->set_length(str.length());
190 answer->set_hash_field(hash_field); 188 answer->set_hash_field(hash_field);
191 189
192 ASSERT_EQ(size, answer->Size()); 190 ASSERT_EQ(size, answer->Size());
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846 DisallowAllocationFailure::~DisallowAllocationFailure() { 844 DisallowAllocationFailure::~DisallowAllocationFailure() {
847 #ifdef DEBUG 845 #ifdef DEBUG
848 HEAP->disallow_allocation_failure_ = old_state_; 846 HEAP->disallow_allocation_failure_ = old_state_;
849 #endif 847 #endif
850 } 848 }
851 849
852 850
853 } } // namespace v8::internal 851 } } // namespace v8::internal
854 852
855 #endif // V8_HEAP_INL_H_ 853 #endif // V8_HEAP_INL_H_
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