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Issue 1582573002: InnerPointerToCodeCache::GetCacheEntry() made deterministic in predictable mode. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 11 months ago
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1 // Copyright 2015 the V8 project authors. All rights reserved. 1 // Copyright 2015 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 #include "src/objects.h" 5 #include "src/objects.h"
6 6
7 #include <cmath> 7 #include <cmath>
8 #include <iomanip> 8 #include <iomanip>
9 #include <sstream> 9 #include <sstream>
10 10
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12133 12133
12134 12134
12135 void String::PrintOn(FILE* file) { 12135 void String::PrintOn(FILE* file) {
12136 int length = this->length(); 12136 int length = this->length();
12137 for (int i = 0; i < length; i++) { 12137 for (int i = 0; i < length; i++) {
12138 PrintF(file, "%c", Get(i)); 12138 PrintF(file, "%c", Get(i));
12139 } 12139 }
12140 } 12140 }
12141 12141
12142 12142
12143 inline static uint32_t ObjectAddressForHashing(Object* object) {
12144 uint32_t value = static_cast<uint32_t>(reinterpret_cast<uintptr_t>(object));
12145 return value & MemoryChunk::kAlignmentMask;
12146 }
12147
12148
12149 int Map::Hash() { 12143 int Map::Hash() {
12150 // For performance reasons we only hash the 3 most variable fields of a map: 12144 // For performance reasons we only hash the 3 most variable fields of a map:
12151 // constructor, prototype and bit_field2. For predictability reasons we 12145 // constructor, prototype and bit_field2. For predictability reasons we
12152 // use objects' offsets in respective pages for hashing instead of raw 12146 // use objects' offsets in respective pages for hashing instead of raw
12153 // addresses. 12147 // addresses.
12154 12148
12155 // Shift away the tag. 12149 // Shift away the tag.
12156 int hash = ObjectAddressForHashing(GetConstructor()) >> 2; 12150 int hash = ObjectAddressForHashing(GetConstructor()) >> 2;
12157 12151
12158 // XOR-ing the prototype and constructor directly yields too many zero bits 12152 // XOR-ing the prototype and constructor directly yields too many zero bits
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19608 if (cell->value() != *new_value) { 19602 if (cell->value() != *new_value) {
19609 cell->set_value(*new_value); 19603 cell->set_value(*new_value);
19610 Isolate* isolate = cell->GetIsolate(); 19604 Isolate* isolate = cell->GetIsolate();
19611 cell->dependent_code()->DeoptimizeDependentCodeGroup( 19605 cell->dependent_code()->DeoptimizeDependentCodeGroup(
19612 isolate, DependentCode::kPropertyCellChangedGroup); 19606 isolate, DependentCode::kPropertyCellChangedGroup);
19613 } 19607 }
19614 } 19608 }
19615 19609
19616 } // namespace internal 19610 } // namespace internal
19617 } // namespace v8 19611 } // namespace v8
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