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Issue 669240: - Remove function boilerplate objects and use SharedFunctionInfos in... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Committed Created 10 years, 9 months ago
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1 // Copyright 2009 the V8 project authors. All rights reserved. 1 // Copyright 2009 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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167 } 167 }
168 168
169 169
170 void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared, 170 void SetExpectedNofPropertiesFromEstimate(Handle<SharedFunctionInfo> shared,
171 int estimate) { 171 int estimate) {
172 shared->set_expected_nof_properties( 172 shared->set_expected_nof_properties(
173 ExpectedNofPropertiesFromEstimate(estimate)); 173 ExpectedNofPropertiesFromEstimate(estimate));
174 } 174 }
175 175
176 176
177 void SetExpectedNofPropertiesFromEstimate(Handle<JSFunction> func,
178 int estimate) {
179 SetExpectedNofProperties(
180 func, ExpectedNofPropertiesFromEstimate(estimate));
181 }
182
183
184 void NormalizeProperties(Handle<JSObject> object, 177 void NormalizeProperties(Handle<JSObject> object,
185 PropertyNormalizationMode mode, 178 PropertyNormalizationMode mode,
186 int expected_additional_properties) { 179 int expected_additional_properties) {
187 CALL_HEAP_FUNCTION_VOID(object->NormalizeProperties( 180 CALL_HEAP_FUNCTION_VOID(object->NormalizeProperties(
188 mode, 181 mode,
189 expected_additional_properties)); 182 expected_additional_properties));
190 } 183 }
191 184
192 185
193 void NormalizeElements(Handle<JSObject> object) { 186 void NormalizeElements(Handle<JSObject> object) {
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789 HandleScope scope; 782 HandleScope scope;
790 Handle<FixedArray> info(FixedArray::cast(obj->map()->constructor())); 783 Handle<FixedArray> info(FixedArray::cast(obj->map()->constructor()));
791 int index = Smi::cast(info->get(0))->value(); 784 int index = Smi::cast(info->get(0))->value();
792 ASSERT(index >= 0); 785 ASSERT(index >= 0);
793 Handle<Context> compile_context(Context::cast(info->get(1))); 786 Handle<Context> compile_context(Context::cast(info->get(1)));
794 Handle<Context> function_context(Context::cast(info->get(2))); 787 Handle<Context> function_context(Context::cast(info->get(2)));
795 Handle<Object> receiver(compile_context->global()->builtins()); 788 Handle<Object> receiver(compile_context->global()->builtins());
796 789
797 Vector<const char> name = Natives::GetScriptName(index); 790 Vector<const char> name = Natives::GetScriptName(index);
798 791
799 Handle<JSFunction> boilerplate; 792 Handle<SharedFunctionInfo> function_info;
800 793
801 if (!Bootstrapper::NativesCacheLookup(name, &boilerplate)) { 794 if (!Bootstrapper::NativesCacheLookup(name, &function_info)) {
802 Handle<String> source_code = Bootstrapper::NativesSourceLookup(index); 795 Handle<String> source_code = Bootstrapper::NativesSourceLookup(index);
803 Handle<String> script_name = Factory::NewStringFromAscii(name); 796 Handle<String> script_name = Factory::NewStringFromAscii(name);
804 bool allow_natives_syntax = FLAG_allow_natives_syntax; 797 bool allow_natives_syntax = FLAG_allow_natives_syntax;
805 FLAG_allow_natives_syntax = true; 798 FLAG_allow_natives_syntax = true;
806 boilerplate = Compiler::Compile(source_code, script_name, 0, 0, NULL, NULL, 799 function_info = Compiler::Compile(source_code,
807 Handle<String>::null(), NATIVES_CODE); 800 script_name,
801 0, 0, NULL, NULL,
802 Handle<String>::null(),
803 NATIVES_CODE);
808 FLAG_allow_natives_syntax = allow_natives_syntax; 804 FLAG_allow_natives_syntax = allow_natives_syntax;
809 // If the compilation failed (possibly due to stack overflows), we 805 // If the compilation failed (possibly due to stack overflows), we
810 // should never enter the result in the natives cache. Instead we 806 // should never enter the result in the natives cache. Instead we
811 // return from the function without marking the function as having 807 // return from the function without marking the function as having
812 // been lazily loaded. 808 // been lazily loaded.
813 if (boilerplate.is_null()) { 809 if (function_info.is_null()) {
814 *pending_exception = true; 810 *pending_exception = true;
815 return; 811 return;
816 } 812 }
817 Bootstrapper::NativesCacheAdd(name, boilerplate); 813 Bootstrapper::NativesCacheAdd(name, function_info);
818 } 814 }
819 815
820 // We shouldn't get here if compiling the script failed. 816 // We shouldn't get here if compiling the script failed.
821 ASSERT(!boilerplate.is_null()); 817 ASSERT(!function_info.is_null());
822 818
823 #ifdef ENABLE_DEBUGGER_SUPPORT 819 #ifdef ENABLE_DEBUGGER_SUPPORT
824 // When the debugger running in its own context touches lazy loaded 820 // When the debugger running in its own context touches lazy loaded
825 // functions loading can be triggered. In that case ensure that the 821 // functions loading can be triggered. In that case ensure that the
826 // execution of the boilerplate is in the correct context. 822 // execution of the boilerplate is in the correct context.
827 SaveContext save; 823 SaveContext save;
828 if (!Debug::debug_context().is_null() && 824 if (!Debug::debug_context().is_null() &&
829 Top::context() == *Debug::debug_context()) { 825 Top::context() == *Debug::debug_context()) {
830 Top::set_context(*compile_context); 826 Top::set_context(*compile_context);
831 } 827 }
832 #endif 828 #endif
833 829
834 // Reset the lazy load data before running the script to make sure 830 // Reset the lazy load data before running the script to make sure
835 // not to get recursive lazy loading. 831 // not to get recursive lazy loading.
836 obj->map()->set_needs_loading(false); 832 obj->map()->set_needs_loading(false);
837 obj->map()->set_constructor(info->get(3)); 833 obj->map()->set_constructor(info->get(3));
838 834
839 // Run the script. 835 // Run the script.
840 Handle<JSFunction> script_fun( 836 Handle<JSFunction> script_fun(
841 Factory::NewFunctionFromBoilerplate(boilerplate, function_context)); 837 Factory::NewFunctionFromSharedFunctionInfo(function_info,
838 function_context));
842 Execution::Call(script_fun, receiver, 0, NULL, pending_exception); 839 Execution::Call(script_fun, receiver, 0, NULL, pending_exception);
843 840
844 // If lazy loading failed, restore the unloaded state of obj. 841 // If lazy loading failed, restore the unloaded state of obj.
845 if (*pending_exception) { 842 if (*pending_exception) {
846 obj->map()->set_needs_loading(true); 843 obj->map()->set_needs_loading(true);
847 obj->map()->set_constructor(*info); 844 obj->map()->set_constructor(*info);
848 } 845 }
849 } 846 }
850 847
851 848
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862 Handle<Map> new_map = Factory::CopyMapDropTransitions(old_map); 859 Handle<Map> new_map = Factory::CopyMapDropTransitions(old_map);
863 obj->set_map(*new_map); 860 obj->set_map(*new_map);
864 new_map->set_needs_loading(true); 861 new_map->set_needs_loading(true);
865 // Store the lazy loading info in the constructor field. We'll 862 // Store the lazy loading info in the constructor field. We'll
866 // reestablish the constructor from the fixed array after loading. 863 // reestablish the constructor from the fixed array after loading.
867 new_map->set_constructor(*arr); 864 new_map->set_constructor(*arr);
868 ASSERT(!obj->IsLoaded()); 865 ASSERT(!obj->IsLoaded());
869 } 866 }
870 867
871 } } // namespace v8::internal 868 } } // namespace v8::internal
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