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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 // 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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227 // slow properties mode for now. We don't go in the map cache because | 227 // slow properties mode for now. We don't go in the map cache because |
228 // maps with constant functions can't be shared if the functions are | 228 // maps with constant functions can't be shared if the functions are |
229 // not the same (which is the common case). | 229 // not the same (which is the common case). |
230 bool is_result_from_cache = false; | 230 bool is_result_from_cache = false; |
231 Handle<Map> map = has_function_literal | 231 Handle<Map> map = has_function_literal |
232 ? Handle<Map>(context->object_function()->initial_map()) | 232 ? Handle<Map>(context->object_function()->initial_map()) |
233 : ComputeObjectLiteralMap(context, | 233 : ComputeObjectLiteralMap(context, |
234 constant_properties, | 234 constant_properties, |
235 &is_result_from_cache); | 235 &is_result_from_cache); |
236 | 236 |
237 Handle<JSObject> boilerplate = isolate->factory()->NewJSObjectFromMap(map); | 237 Handle<JSObject> boilerplate; |
238 if (isolate->heap()->ShouldGloballyPretenure()) { | |
239 boilerplate = isolate->factory()->NewJSObjectFromMap(map, TENURED); | |
Michael Starzinger
2013/05/03 09:33:10
Can we add a "Heap::GetGlobalPretenureFlag()" help
Hannes Payer (out of office)
2013/05/03 09:35:43
Done.
| |
240 } else { | |
241 boilerplate = isolate->factory()->NewJSObjectFromMap(map); | |
242 } | |
238 | 243 |
239 // Normalize the elements of the boilerplate to save space if needed. | 244 // Normalize the elements of the boilerplate to save space if needed. |
240 if (!should_have_fast_elements) JSObject::NormalizeElements(boilerplate); | 245 if (!should_have_fast_elements) JSObject::NormalizeElements(boilerplate); |
241 | 246 |
242 // Add the constant properties to the boilerplate. | 247 // Add the constant properties to the boilerplate. |
243 int length = constant_properties->length(); | 248 int length = constant_properties->length(); |
244 bool should_transform = | 249 bool should_transform = |
245 !is_result_from_cache && boilerplate->HasFastProperties(); | 250 !is_result_from_cache && boilerplate->HasFastProperties(); |
246 if (should_transform || has_function_literal) { | 251 if (should_transform || has_function_literal) { |
247 // Normalize the properties of object to avoid n^2 behavior | 252 // Normalize the properties of object to avoid n^2 behavior |
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331 static const int kSmiLiteralMinimumLength = 1024; | 336 static const int kSmiLiteralMinimumLength = 1024; |
332 | 337 |
333 | 338 |
334 Handle<Object> Runtime::CreateArrayLiteralBoilerplate( | 339 Handle<Object> Runtime::CreateArrayLiteralBoilerplate( |
335 Isolate* isolate, | 340 Isolate* isolate, |
336 Handle<FixedArray> literals, | 341 Handle<FixedArray> literals, |
337 Handle<FixedArray> elements) { | 342 Handle<FixedArray> elements) { |
338 // Create the JSArray. | 343 // Create the JSArray. |
339 Handle<JSFunction> constructor( | 344 Handle<JSFunction> constructor( |
340 JSFunction::NativeContextFromLiterals(*literals)->array_function()); | 345 JSFunction::NativeContextFromLiterals(*literals)->array_function()); |
341 Handle<JSArray> object = | 346 |
342 Handle<JSArray>::cast(isolate->factory()->NewJSObject(constructor)); | 347 Handle<JSArray> object; |
348 if (isolate->heap()->ShouldGloballyPretenure()) { | |
349 object = Handle<JSArray>::cast( | |
350 isolate->factory()->NewJSObject(constructor, TENURED)); | |
351 } else { | |
352 object = Handle<JSArray>::cast( | |
353 isolate->factory()->NewJSObject(constructor)); | |
354 } | |
343 | 355 |
344 ElementsKind constant_elements_kind = | 356 ElementsKind constant_elements_kind = |
345 static_cast<ElementsKind>(Smi::cast(elements->get(0))->value()); | 357 static_cast<ElementsKind>(Smi::cast(elements->get(0))->value()); |
346 Handle<FixedArrayBase> constant_elements_values( | 358 Handle<FixedArrayBase> constant_elements_values( |
347 FixedArrayBase::cast(elements->get(1))); | 359 FixedArrayBase::cast(elements->get(1))); |
348 | 360 |
349 ASSERT(IsFastElementsKind(constant_elements_kind)); | 361 ASSERT(IsFastElementsKind(constant_elements_kind)); |
350 Context* native_context = isolate->context()->native_context(); | 362 Context* native_context = isolate->context()->native_context(); |
351 Object* maybe_maps_array = native_context->js_array_maps(); | 363 Object* maybe_maps_array = native_context->js_array_maps(); |
352 ASSERT(!maybe_maps_array->IsUndefined()); | 364 ASSERT(!maybe_maps_array->IsUndefined()); |
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6124 } | 6136 } |
6125 | 6137 |
6126 | 6138 |
6127 RUNTIME_FUNCTION(MaybeObject*, Runtime_NumberToStringSkipCache) { | 6139 RUNTIME_FUNCTION(MaybeObject*, Runtime_NumberToStringSkipCache) { |
6128 NoHandleAllocation ha(isolate); | 6140 NoHandleAllocation ha(isolate); |
6129 ASSERT(args.length() == 1); | 6141 ASSERT(args.length() == 1); |
6130 | 6142 |
6131 Object* number = args[0]; | 6143 Object* number = args[0]; |
6132 RUNTIME_ASSERT(number->IsNumber()); | 6144 RUNTIME_ASSERT(number->IsNumber()); |
6133 | 6145 |
6146 if (isolate->heap()->ShouldGloballyPretenure()) { | |
6147 return isolate->heap()->NumberToString(number, false, TENURED); | |
6148 } | |
6134 return isolate->heap()->NumberToString(number, false); | 6149 return isolate->heap()->NumberToString(number, false); |
6135 } | 6150 } |
6136 | 6151 |
6137 | 6152 |
6138 RUNTIME_FUNCTION(MaybeObject*, Runtime_NumberToInteger) { | 6153 RUNTIME_FUNCTION(MaybeObject*, Runtime_NumberToInteger) { |
6139 NoHandleAllocation ha(isolate); | 6154 NoHandleAllocation ha(isolate); |
6140 ASSERT(args.length() == 1); | 6155 ASSERT(args.length() == 1); |
6141 | 6156 |
6142 CONVERT_DOUBLE_ARG_CHECKED(number, 0); | 6157 CONVERT_DOUBLE_ARG_CHECKED(number, 0); |
6143 | 6158 |
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13377 // Handle last resort GC and make sure to allow future allocations | 13392 // Handle last resort GC and make sure to allow future allocations |
13378 // to grow the heap without causing GCs (if possible). | 13393 // to grow the heap without causing GCs (if possible). |
13379 isolate->counters()->gc_last_resort_from_js()->Increment(); | 13394 isolate->counters()->gc_last_resort_from_js()->Increment(); |
13380 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, | 13395 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, |
13381 "Runtime::PerformGC"); | 13396 "Runtime::PerformGC"); |
13382 } | 13397 } |
13383 } | 13398 } |
13384 | 13399 |
13385 | 13400 |
13386 } } // namespace v8::internal | 13401 } } // namespace v8::internal |
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