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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 // Review notes: | 5 // Review notes: |
6 // | 6 // |
7 // - The use of macros in these inline functions may seem superfluous | 7 // - The use of macros in these inline functions may seem superfluous |
8 // but it is absolutely needed to make sure gcc generates optimal | 8 // but it is absolutely needed to make sure gcc generates optimal |
9 // code. gcc is not happy when attempting to inline too deep. | 9 // code. gcc is not happy when attempting to inline too deep. |
10 // | 10 // |
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7371 | 7371 |
7372 | 7372 |
7373 template<typename StaticVisitor> | 7373 template<typename StaticVisitor> |
7374 void ExternalTwoByteString::ExternalTwoByteStringIterateBody() { | 7374 void ExternalTwoByteString::ExternalTwoByteStringIterateBody() { |
7375 typedef v8::String::ExternalStringResource Resource; | 7375 typedef v8::String::ExternalStringResource Resource; |
7376 StaticVisitor::VisitExternalTwoByteString( | 7376 StaticVisitor::VisitExternalTwoByteString( |
7377 reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset))); | 7377 reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset))); |
7378 } | 7378 } |
7379 | 7379 |
7380 | 7380 |
7381 static void IterateBodyUsingLayoutDescriptor(HeapObject* object, | 7381 static inline void IterateBodyUsingLayoutDescriptor(HeapObject* object, |
7382 int start_offset, int end_offset, | 7382 int start_offset, |
7383 ObjectVisitor* v) { | 7383 int end_offset, |
| 7384 ObjectVisitor* v) { |
7384 DCHECK(FLAG_unbox_double_fields); | 7385 DCHECK(FLAG_unbox_double_fields); |
7385 DCHECK(IsAligned(start_offset, kPointerSize) && | 7386 DCHECK(IsAligned(start_offset, kPointerSize) && |
7386 IsAligned(end_offset, kPointerSize)); | 7387 IsAligned(end_offset, kPointerSize)); |
7387 | 7388 |
7388 InobjectPropertiesHelper helper(object->map()); | 7389 InobjectPropertiesHelper helper(object->map()); |
7389 DCHECK(!helper.all_fields_tagged()); | 7390 DCHECK(!helper.all_fields_tagged()); |
7390 | 7391 |
7391 for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { | 7392 for (int offset = start_offset; offset < end_offset; offset += kPointerSize) { |
7392 // Visit all tagged fields. | 7393 // Visit all tagged fields. |
7393 if (helper.IsTagged(offset)) { | 7394 if (helper.IsTagged(offset)) { |
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7484 #undef READ_SHORT_FIELD | 7485 #undef READ_SHORT_FIELD |
7485 #undef WRITE_SHORT_FIELD | 7486 #undef WRITE_SHORT_FIELD |
7486 #undef READ_BYTE_FIELD | 7487 #undef READ_BYTE_FIELD |
7487 #undef WRITE_BYTE_FIELD | 7488 #undef WRITE_BYTE_FIELD |
7488 #undef NOBARRIER_READ_BYTE_FIELD | 7489 #undef NOBARRIER_READ_BYTE_FIELD |
7489 #undef NOBARRIER_WRITE_BYTE_FIELD | 7490 #undef NOBARRIER_WRITE_BYTE_FIELD |
7490 | 7491 |
7491 } } // namespace v8::internal | 7492 } } // namespace v8::internal |
7492 | 7493 |
7493 #endif // V8_OBJECTS_INL_H_ | 7494 #endif // V8_OBJECTS_INL_H_ |
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