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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
| 8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
| 9 #include "src/debug.h" | 9 #include "src/debug.h" |
| 10 #include "src/messages.h" | 10 #include "src/messages.h" |
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| 379 | 379 |
| 380 | 380 |
| 381 RUNTIME_FUNCTION(Runtime_IsExtensible) { | 381 RUNTIME_FUNCTION(Runtime_IsExtensible) { |
| 382 SealHandleScope shs(isolate); | 382 SealHandleScope shs(isolate); |
| 383 DCHECK(args.length() == 1); | 383 DCHECK(args.length() == 1); |
| 384 CONVERT_ARG_CHECKED(JSObject, obj, 0); | 384 CONVERT_ARG_CHECKED(JSObject, obj, 0); |
| 385 return isolate->heap()->ToBoolean(obj->IsExtensible()); | 385 return isolate->heap()->ToBoolean(obj->IsExtensible()); |
| 386 } | 386 } |
| 387 | 387 |
| 388 | 388 |
| 389 RUNTIME_FUNCTION(Runtime_DisableAccessChecks) { | |
| 390 HandleScope scope(isolate); | |
| 391 DCHECK(args.length() == 1); | |
| 392 CONVERT_ARG_HANDLE_CHECKED(HeapObject, object, 0); | |
| 393 Handle<Map> old_map(object->map()); | |
| 394 bool needs_access_checks = old_map->is_access_check_needed(); | |
| 395 if (needs_access_checks) { | |
| 396 // Copy map so it won't interfere constructor's initial map. | |
| 397 Handle<Map> new_map = Map::Copy(old_map, "DisableAccessChecks"); | |
| 398 new_map->set_is_access_check_needed(false); | |
| 399 JSObject::MigrateToMap(Handle<JSObject>::cast(object), new_map); | |
| 400 } | |
| 401 return isolate->heap()->ToBoolean(needs_access_checks); | |
| 402 } | |
| 403 | |
| 404 | |
| 405 RUNTIME_FUNCTION(Runtime_EnableAccessChecks) { | |
| 406 HandleScope scope(isolate); | |
| 407 DCHECK(args.length() == 1); | |
| 408 CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0); | |
| 409 Handle<Map> old_map(object->map()); | |
| 410 RUNTIME_ASSERT(!old_map->is_access_check_needed()); | |
| 411 // Copy map so it won't interfere constructor's initial map. | |
| 412 Handle<Map> new_map = Map::Copy(old_map, "EnableAccessChecks"); | |
| 413 new_map->set_is_access_check_needed(true); | |
| 414 JSObject::MigrateToMap(object, new_map); | |
| 415 return isolate->heap()->undefined_value(); | |
| 416 } | |
| 417 | |
| 418 | |
| 419 RUNTIME_FUNCTION(Runtime_OptimizeObjectForAddingMultipleProperties) { | 389 RUNTIME_FUNCTION(Runtime_OptimizeObjectForAddingMultipleProperties) { |
| 420 HandleScope scope(isolate); | 390 HandleScope scope(isolate); |
| 421 DCHECK(args.length() == 2); | 391 DCHECK(args.length() == 2); |
| 422 CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0); | 392 CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0); |
| 423 CONVERT_SMI_ARG_CHECKED(properties, 1); | 393 CONVERT_SMI_ARG_CHECKED(properties, 1); |
| 424 // Conservative upper limit to prevent fuzz tests from going OOM. | 394 // Conservative upper limit to prevent fuzz tests from going OOM. |
| 425 RUNTIME_ASSERT(properties <= 100000); | 395 RUNTIME_ASSERT(properties <= 100000); |
| 426 if (object->HasFastProperties() && !object->IsJSGlobalProxy()) { | 396 if (object->HasFastProperties() && !object->IsJSGlobalProxy()) { |
| 427 JSObject::NormalizeProperties(object, KEEP_INOBJECT_PROPERTIES, properties, | 397 JSObject::NormalizeProperties(object, KEEP_INOBJECT_PROPERTIES, properties, |
| 428 "OptimizeForAdding"); | 398 "OptimizeForAdding"); |
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| 1444 CONVERT_PROPERTY_ATTRIBUTES_CHECKED(attrs, 3); | 1414 CONVERT_PROPERTY_ATTRIBUTES_CHECKED(attrs, 3); |
| 1445 | 1415 |
| 1446 RETURN_FAILURE_ON_EXCEPTION( | 1416 RETURN_FAILURE_ON_EXCEPTION( |
| 1447 isolate, | 1417 isolate, |
| 1448 JSObject::DefineAccessor(object, name, isolate->factory()->null_value(), | 1418 JSObject::DefineAccessor(object, name, isolate->factory()->null_value(), |
| 1449 setter, attrs)); | 1419 setter, attrs)); |
| 1450 return isolate->heap()->undefined_value(); | 1420 return isolate->heap()->undefined_value(); |
| 1451 } | 1421 } |
| 1452 } // namespace internal | 1422 } // namespace internal |
| 1453 } // namespace v8 | 1423 } // namespace v8 |
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