2011-05-16 Geoffrey Garen <[email protected]>
Reviewed by Geoffrey Garen.
Global object initialization is expensive
https://bugs.webkit.org/show_bug.cgi?id=60933
Changed a bunch of globals to allocate their properties lazily, and changed
the global object to allocate a bunch of its globals lazily.
This reduces the footprint of a global object from 287 objects with 58
functions for 24K to 173 objects with 20 functions for 15K.
Large patch, but it's all mechanical.
- create_hash_table: Added a special case for fromCharCode, since it uses
a custom "thunk generator".
- heap/Heap.cpp:
(JSC::TypeCounter::operator()): Fixed a bug where the type counter would
overcount objects that were owned through more than one mechanism because
it was getting in the way of counting the results for this patch.
- interpreter/CallFrame.h:
(JSC::ExecState::arrayConstructorTable):
(JSC::ExecState::arrayPrototypeTable):
(JSC::ExecState::booleanPrototypeTable):
(JSC::ExecState::dateConstructorTable):
(JSC::ExecState::errorPrototypeTable):
(JSC::ExecState::globalObjectTable):
(JSC::ExecState::numberConstructorTable):
(JSC::ExecState::numberPrototypeTable):
(JSC::ExecState::objectPrototypeTable):
(JSC::ExecState::regExpPrototypeTable):
(JSC::ExecState::stringConstructorTable): Added new tables.
- runtime/ArrayConstructor.cpp:
(JSC::ArrayConstructor::ArrayConstructor):
(JSC::ArrayConstructor::getOwnPropertySlot):
(JSC::ArrayConstructor::getOwnPropertyDescriptor):
- runtime/ArrayConstructor.h:
(JSC::ArrayConstructor::createStructure):
- runtime/ArrayPrototype.cpp:
(JSC::ArrayPrototype::getOwnPropertySlot):
(JSC::ArrayPrototype::getOwnPropertyDescriptor):
- runtime/ArrayPrototype.h:
- runtime/BooleanPrototype.cpp:
(JSC::BooleanPrototype::BooleanPrototype):
(JSC::BooleanPrototype::getOwnPropertySlot):
(JSC::BooleanPrototype::getOwnPropertyDescriptor):
- runtime/BooleanPrototype.h:
(JSC::BooleanPrototype::createStructure):
- runtime/DateConstructor.cpp:
(JSC::DateConstructor::DateConstructor):
(JSC::DateConstructor::getOwnPropertySlot):
(JSC::DateConstructor::getOwnPropertyDescriptor):
- runtime/DateConstructor.h:
(JSC::DateConstructor::createStructure):
- runtime/ErrorPrototype.cpp:
(JSC::ErrorPrototype::ErrorPrototype):
(JSC::ErrorPrototype::getOwnPropertySlot):
(JSC::ErrorPrototype::getOwnPropertyDescriptor):
- runtime/ErrorPrototype.h:
(JSC::ErrorPrototype::createStructure): Standardized these objects
to use static tables for function properties.
- runtime/JSGlobalData.cpp:
(JSC::JSGlobalData::JSGlobalData):
(JSC::JSGlobalData::~JSGlobalData):
- runtime/JSGlobalData.h: Added new tables.
- runtime/JSGlobalObject.cpp:
(JSC::JSGlobalObject::reset):
(JSC::JSGlobalObject::addStaticGlobals):
(JSC::JSGlobalObject::getOwnPropertySlot):
(JSC::JSGlobalObject::getOwnPropertyDescriptor):
- runtime/JSGlobalObject.h:
- runtime/JSGlobalObjectFunctions.cpp:
- runtime/JSGlobalObjectFunctions.h: Changed JSGlobalObject to use a
static table for its global functions. This required uninlining some
things to avoid a circular header dependency. However, those things
probably shouldn't have been inlined in the first place.
Even more global object properties can be made lazy, but that requires
more in-depth changes.
- runtime/MathObject.cpp:
- runtime/NumberConstructor.cpp:
(JSC::NumberConstructor::getOwnPropertySlot):
(JSC::NumberConstructor::getOwnPropertyDescriptor):
- runtime/NumberPrototype.cpp:
(JSC::NumberPrototype::NumberPrototype):
(JSC::NumberPrototype::getOwnPropertySlot):
(JSC::NumberPrototype::getOwnPropertyDescriptor):
- runtime/NumberPrototype.h:
(JSC::NumberPrototype::createStructure):
- runtime/ObjectPrototype.cpp:
(JSC::ObjectPrototype::ObjectPrototype):
(JSC::ObjectPrototype::put):
(JSC::ObjectPrototype::getOwnPropertySlot):
(JSC::ObjectPrototype::getOwnPropertyDescriptor):
- runtime/ObjectPrototype.h:
(JSC::ObjectPrototype::createStructure):
- runtime/RegExpPrototype.cpp:
(JSC::RegExpPrototype::RegExpPrototype):
(JSC::RegExpPrototype::getOwnPropertySlot):
(JSC::RegExpPrototype::getOwnPropertyDescriptor):
- runtime/RegExpPrototype.h:
(JSC::RegExpPrototype::createStructure):
- runtime/StringConstructor.cpp:
(JSC::StringConstructor::StringConstructor):
(JSC::StringConstructor::getOwnPropertySlot):
(JSC::StringConstructor::getOwnPropertyDescriptor):
- runtime/StringConstructor.h:
(JSC::StringConstructor::createStructure): Standardized these objects
to use static tables for function properties.
