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

Issue 2517153002: Introduce set_the_hole(Isolate*, int) and friends (Closed)
Patch Set: merged with master Created 4 years 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 // 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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2413 map() != GetHeap()->fixed_array_map()); 2413 map() != GetHeap()->fixed_array_map());
2414 int offset = kHeaderSize + index * kDoubleSize; 2414 int offset = kHeaderSize + index * kDoubleSize;
2415 if (std::isnan(value)) { 2415 if (std::isnan(value)) {
2416 WRITE_DOUBLE_FIELD(this, offset, std::numeric_limits<double>::quiet_NaN()); 2416 WRITE_DOUBLE_FIELD(this, offset, std::numeric_limits<double>::quiet_NaN());
2417 } else { 2417 } else {
2418 WRITE_DOUBLE_FIELD(this, offset, value); 2418 WRITE_DOUBLE_FIELD(this, offset, value);
2419 } 2419 }
2420 DCHECK(!is_the_hole(index)); 2420 DCHECK(!is_the_hole(index));
2421 } 2421 }
2422 2422
2423 void FixedDoubleArray::set_the_hole(Isolate* isolate, int index) {
2424 set_the_hole(index);
2425 }
2423 2426
2424 void FixedDoubleArray::set_the_hole(int index) { 2427 void FixedDoubleArray::set_the_hole(int index) {
2425 DCHECK(map() != GetHeap()->fixed_cow_array_map() && 2428 DCHECK(map() != GetHeap()->fixed_cow_array_map() &&
2426 map() != GetHeap()->fixed_array_map()); 2429 map() != GetHeap()->fixed_array_map());
2427 int offset = kHeaderSize + index * kDoubleSize; 2430 int offset = kHeaderSize + index * kDoubleSize;
2428 WRITE_UINT64_FIELD(this, offset, kHoleNanInt64); 2431 WRITE_UINT64_FIELD(this, offset, kHoleNanInt64);
2429 } 2432 }
2430 2433
2431 bool FixedDoubleArray::is_the_hole(Isolate* isolate, int index) { 2434 bool FixedDoubleArray::is_the_hole(Isolate* isolate, int index) {
2432 return is_the_hole(index); 2435 return is_the_hole(index);
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2590 if (IsHeapNumber()) return kDoubleUnaligned; 2593 if (IsHeapNumber()) return kDoubleUnaligned;
2591 if (IsSimd128Value()) return kSimd128Unaligned; 2594 if (IsSimd128Value()) return kSimd128Unaligned;
2592 #endif // V8_HOST_ARCH_32_BIT 2595 #endif // V8_HOST_ARCH_32_BIT
2593 return kWordAligned; 2596 return kWordAligned;
2594 } 2597 }
2595 2598
2596 2599
2597 void FixedArray::set(int index, 2600 void FixedArray::set(int index,
2598 Object* value, 2601 Object* value,
2599 WriteBarrierMode mode) { 2602 WriteBarrierMode mode) {
2600 DCHECK(map() != GetHeap()->fixed_cow_array_map()); 2603 DCHECK_NE(map(), GetHeap()->fixed_cow_array_map());
2601 DCHECK(index >= 0 && index < this->length()); 2604 DCHECK_GE(index, 0);
2605 DCHECK_LT(index, this->length());
2602 int offset = kHeaderSize + index * kPointerSize; 2606 int offset = kHeaderSize + index * kPointerSize;
2603 WRITE_FIELD(this, offset, value); 2607 WRITE_FIELD(this, offset, value);
2604 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, offset, value, mode); 2608 CONDITIONAL_WRITE_BARRIER(GetHeap(), this, offset, value, mode);
2605 } 2609 }
2606 2610
2607 2611
2608 void FixedArray::NoWriteBarrierSet(FixedArray* array, 2612 void FixedArray::NoWriteBarrierSet(FixedArray* array,
2609 int index, 2613 int index,
2610 Object* value) { 2614 Object* value) {
2611 DCHECK(array->map() != array->GetHeap()->fixed_cow_array_map()); 2615 DCHECK_NE(array->map(), array->GetHeap()->fixed_cow_array_map());
2612 DCHECK(index >= 0 && index < array->length()); 2616 DCHECK_GE(index, 0);
2617 DCHECK_LT(index, array->length());
2613 DCHECK(!array->GetHeap()->InNewSpace(value)); 2618 DCHECK(!array->GetHeap()->InNewSpace(value));
2614 WRITE_FIELD(array, kHeaderSize + index * kPointerSize, value); 2619 WRITE_FIELD(array, kHeaderSize + index * kPointerSize, value);
2615 } 2620 }
2616 2621
2617
2618 void FixedArray::set_undefined(int index) { 2622 void FixedArray::set_undefined(int index) {
2619 DCHECK(map() != GetHeap()->fixed_cow_array_map()); 2623 set_undefined(GetIsolate(), index);
2620 DCHECK(index >= 0 && index < this->length());
2621 DCHECK(!GetHeap()->InNewSpace(GetHeap()->undefined_value()));
2622 WRITE_FIELD(this,
2623 kHeaderSize + index * kPointerSize,
2624 GetHeap()->undefined_value());
2625 } 2624 }
2626 2625
2627 2626 void FixedArray::set_undefined(Isolate* isolate, int index) {
2628 void FixedArray::set_null(int index) { 2627 FixedArray::NoWriteBarrierSet(this, index,
2629 DCHECK(index >= 0 && index < this->length()); 2628 isolate->heap()->undefined_value());
2630 DCHECK(!GetHeap()->InNewSpace(GetHeap()->null_value()));
2631 WRITE_FIELD(this,
2632 kHeaderSize + index * kPointerSize,
2633 GetHeap()->null_value());
2634 } 2629 }
2635 2630
2631 void FixedArray::set_null(int index) { set_null(GetIsolate(), index); }
2636 2632
2637 void FixedArray::set_the_hole(int index) { 2633 void FixedArray::set_null(Isolate* isolate, int index) {
2638 DCHECK(map() != GetHeap()->fixed_cow_array_map()); 2634 FixedArray::NoWriteBarrierSet(this, index, isolate->heap()->null_value());
2639 DCHECK(index >= 0 && index < this->length());
2640 DCHECK(!GetHeap()->InNewSpace(GetHeap()->the_hole_value()));
2641 WRITE_FIELD(this,
2642 kHeaderSize + index * kPointerSize,
2643 GetHeap()->the_hole_value());
2644 } 2635 }
2645 2636
2637 void FixedArray::set_the_hole(int index) { set_the_hole(GetIsolate(), index); }
2638
2639 void FixedArray::set_the_hole(Isolate* isolate, int index) {
2640 FixedArray::NoWriteBarrierSet(this, index, isolate->heap()->the_hole_value());
2641 }
2646 2642
2647 void FixedArray::FillWithHoles(int from, int to) { 2643 void FixedArray::FillWithHoles(int from, int to) {
2644 Isolate* isolate = GetIsolate();
2648 for (int i = from; i < to; i++) { 2645 for (int i = from; i < to; i++) {
2649 set_the_hole(i); 2646 set_the_hole(isolate, i);
2650 } 2647 }
2651 } 2648 }
2652 2649
2653 2650
2654 Object** FixedArray::data_start() { 2651 Object** FixedArray::data_start() {
2655 return HeapObject::RawField(this, kHeaderSize); 2652 return HeapObject::RawField(this, kHeaderSize);
2656 } 2653 }
2657 2654
2658 2655
2659 Object** FixedArray::RawFieldOfElementAt(int index) { 2656 Object** FixedArray::RawFieldOfElementAt(int index) {
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8444 #undef WRITE_INT64_FIELD 8441 #undef WRITE_INT64_FIELD
8445 #undef READ_BYTE_FIELD 8442 #undef READ_BYTE_FIELD
8446 #undef WRITE_BYTE_FIELD 8443 #undef WRITE_BYTE_FIELD
8447 #undef NOBARRIER_READ_BYTE_FIELD 8444 #undef NOBARRIER_READ_BYTE_FIELD
8448 #undef NOBARRIER_WRITE_BYTE_FIELD 8445 #undef NOBARRIER_WRITE_BYTE_FIELD
8449 8446
8450 } // namespace internal 8447 } // namespace internal
8451 } // namespace v8 8448 } // namespace v8
8452 8449
8453 #endif // V8_OBJECTS_INL_H_ 8450 #endif // V8_OBJECTS_INL_H_
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