| OLD | NEW |
| 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 |
| (...skipping 45 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 56 static EntropySource entropy_source; | 56 static EntropySource entropy_source; |
| 57 | 57 |
| 58 | 58 |
| 59 bool V8::Initialize(Deserializer* des) { | 59 bool V8::Initialize(Deserializer* des) { |
| 60 // Setting --harmony implies all other harmony flags. | 60 // Setting --harmony implies all other harmony flags. |
| 61 // TODO(rossberg): Is there a better place to put this? | 61 // TODO(rossberg): Is there a better place to put this? |
| 62 if (FLAG_harmony) { | 62 if (FLAG_harmony) { |
| 63 FLAG_harmony_typeof = true; | 63 FLAG_harmony_typeof = true; |
| 64 FLAG_harmony_scoping = true; | 64 FLAG_harmony_scoping = true; |
| 65 FLAG_harmony_proxies = true; | 65 FLAG_harmony_proxies = true; |
| 66 FLAG_harmony_weakmaps = true; | 66 FLAG_harmony_collections = true; |
| 67 } | 67 } |
| 68 | 68 |
| 69 InitializeOncePerProcess(); | 69 InitializeOncePerProcess(); |
| 70 | 70 |
| 71 // The current thread may not yet had entered an isolate to run. | 71 // The current thread may not yet had entered an isolate to run. |
| 72 // Note the Isolate::Current() may be non-null because for various | 72 // Note the Isolate::Current() may be non-null because for various |
| 73 // initialization purposes an initializing thread may be assigned an isolate | 73 // initialization purposes an initializing thread may be assigned an isolate |
| 74 // but not actually enter it. | 74 // but not actually enter it. |
| 75 if (i::Isolate::CurrentPerIsolateThreadData() == NULL) { | 75 if (i::Isolate::CurrentPerIsolateThreadData() == NULL) { |
| 76 i::Isolate::EnterDefaultIsolate(); | 76 i::Isolate::EnterDefaultIsolate(); |
| (...skipping 66 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 143 return (state[0] << 14) + (state[1] & 0x3FFFF); | 143 return (state[0] << 14) + (state[1] & 0x3FFFF); |
| 144 } | 144 } |
| 145 | 145 |
| 146 | 146 |
| 147 void V8::SetEntropySource(EntropySource source) { | 147 void V8::SetEntropySource(EntropySource source) { |
| 148 entropy_source = source; | 148 entropy_source = source; |
| 149 } | 149 } |
| 150 | 150 |
| 151 | 151 |
| 152 // Used by JavaScript APIs | 152 // Used by JavaScript APIs |
| 153 uint32_t V8::Random(Isolate* isolate) { | 153 uint32_t V8::Random(Context* context) { |
| 154 ASSERT(isolate == Isolate::Current()); | 154 ASSERT(context->IsGlobalContext()); |
| 155 return random_base(isolate->random_seed()); | 155 ByteArray* seed = context->random_seed(); |
| 156 return random_base(reinterpret_cast<uint32_t*>(seed->GetDataStartAddress())); |
| 156 } | 157 } |
| 157 | 158 |
| 158 | 159 |
| 159 // Used internally by the JIT and memory allocator for security | 160 // Used internally by the JIT and memory allocator for security |
| 160 // purposes. So, we keep a different state to prevent informations | 161 // purposes. So, we keep a different state to prevent informations |
| 161 // leaks that could be used in an exploit. | 162 // leaks that could be used in an exploit. |
| 162 uint32_t V8::RandomPrivate(Isolate* isolate) { | 163 uint32_t V8::RandomPrivate(Isolate* isolate) { |
| 163 ASSERT(isolate == Isolate::Current()); | 164 ASSERT(isolate == Isolate::Current()); |
| 164 return random_base(isolate->private_random_seed()); | 165 return random_base(isolate->private_random_seed()); |
| 165 } | 166 } |
| 166 | 167 |
| 167 | 168 |
| 168 bool V8::IdleNotification() { | 169 bool V8::IdleNotification() { |
| 169 // Returning true tells the caller that there is no need to call | 170 // Returning true tells the caller that there is no need to call |
| 170 // IdleNotification again. | 171 // IdleNotification again. |
| 171 if (!FLAG_use_idle_notification) return true; | 172 if (!FLAG_use_idle_notification) return true; |
| 172 | 173 |
| 173 // Tell the heap that it may want to adjust. | 174 // Tell the heap that it may want to adjust. |
| 174 return HEAP->IdleNotification(); | 175 return HEAP->IdleNotification(); |
| 175 } | 176 } |
| 176 | 177 |
| 177 | 178 |
| 178 // Use a union type to avoid type-aliasing optimizations in GCC. | 179 // Use a union type to avoid type-aliasing optimizations in GCC. |
| 179 typedef union { | 180 typedef union { |
| 180 double double_value; | 181 double double_value; |
| 181 uint64_t uint64_t_value; | 182 uint64_t uint64_t_value; |
| 182 } double_int_union; | 183 } double_int_union; |
| 183 | 184 |
| 184 | 185 |
| 185 Object* V8::FillHeapNumberWithRandom(Object* heap_number, Isolate* isolate) { | 186 Object* V8::FillHeapNumberWithRandom(Object* heap_number, |
| 186 uint64_t random_bits = Random(isolate); | 187 Context* context) { |
| 188 uint64_t random_bits = Random(context); |
| 187 // Make a double* from address (heap_number + sizeof(double)). | 189 // Make a double* from address (heap_number + sizeof(double)). |
| 188 double_int_union* r = reinterpret_cast<double_int_union*>( | 190 double_int_union* r = reinterpret_cast<double_int_union*>( |
| 189 reinterpret_cast<char*>(heap_number) + | 191 reinterpret_cast<char*>(heap_number) + |
| 190 HeapNumber::kValueOffset - kHeapObjectTag); | 192 HeapNumber::kValueOffset - kHeapObjectTag); |
| 191 // Convert 32 random bits to 0.(32 random bits) in a double | 193 // Convert 32 random bits to 0.(32 random bits) in a double |
| 192 // by computing: | 194 // by computing: |
| 193 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). | 195 // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)). |
| 194 const double binary_million = 1048576.0; | 196 const double binary_million = 1048576.0; |
| 195 r->double_value = binary_million; | 197 r->double_value = binary_million; |
| 196 r->uint64_t_value |= random_bits; | 198 r->uint64_t_value |= random_bits; |
| (...skipping 30 matching lines...) Expand all Loading... |
| 227 ElementsAccessor::InitializeOncePerProcess(); | 229 ElementsAccessor::InitializeOncePerProcess(); |
| 228 | 230 |
| 229 if (FLAG_stress_compaction) { | 231 if (FLAG_stress_compaction) { |
| 230 FLAG_force_marking_deque_overflows = true; | 232 FLAG_force_marking_deque_overflows = true; |
| 231 FLAG_gc_global = true; | 233 FLAG_gc_global = true; |
| 232 FLAG_max_new_space_size = (1 << (kPageSizeBits - 10)) * 2; | 234 FLAG_max_new_space_size = (1 << (kPageSizeBits - 10)) * 2; |
| 233 } | 235 } |
| 234 } | 236 } |
| 235 | 237 |
| 236 } } // namespace v8::internal | 238 } } // namespace v8::internal |
| OLD | NEW |