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Issue 8162014: Moved random generator state to global context. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 2 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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3288 3288
3289 3289
3290 Smi* JSReceiver::GenerateIdentityHash() { 3290 Smi* JSReceiver::GenerateIdentityHash() {
3291 Isolate* isolate = GetIsolate(); 3291 Isolate* isolate = GetIsolate();
3292 3292
3293 int hash_value; 3293 int hash_value;
3294 int attempts = 0; 3294 int attempts = 0;
3295 do { 3295 do {
3296 // Generate a random 32-bit hash value but limit range to fit 3296 // Generate a random 32-bit hash value but limit range to fit
3297 // within a smi. 3297 // within a smi.
3298 hash_value = V8::Random(isolate) & Smi::kMaxValue; 3298 hash_value = V8::RandomPrivate(isolate) & Smi::kMaxValue;
3299 attempts++; 3299 attempts++;
3300 } while (hash_value == 0 && attempts < 30); 3300 } while (hash_value == 0 && attempts < 30);
3301 hash_value = hash_value != 0 ? hash_value : 1; // never return 0 3301 hash_value = hash_value != 0 ? hash_value : 1; // never return 0
3302 3302
3303 return Smi::FromInt(hash_value); 3303 return Smi::FromInt(hash_value);
3304 } 3304 }
3305 3305
3306 3306
3307 MaybeObject* JSObject::SetIdentityHash(Object* hash, CreationFlag flag) { 3307 MaybeObject* JSObject::SetIdentityHash(Object* hash, CreationFlag flag) {
3308 MaybeObject* maybe = SetHiddenProperty(GetHeap()->identity_hash_symbol(), 3308 MaybeObject* maybe = SetHiddenProperty(GetHeap()->identity_hash_symbol(),
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12180 if (break_point_objects()->IsUndefined()) return 0; 12180 if (break_point_objects()->IsUndefined()) return 0;
12181 // Single break point. 12181 // Single break point.
12182 if (!break_point_objects()->IsFixedArray()) return 1; 12182 if (!break_point_objects()->IsFixedArray()) return 1;
12183 // Multiple break points. 12183 // Multiple break points.
12184 return FixedArray::cast(break_point_objects())->length(); 12184 return FixedArray::cast(break_point_objects())->length();
12185 } 12185 }
12186 #endif 12186 #endif
12187 12187
12188 12188
12189 } } // namespace v8::internal 12189 } } // namespace v8::internal
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