Timestamp:
Dec 21, 2009, 4:38:24 PM (15 years ago)
Author:
[email protected]
Message:

​https://bugs.webkit.org/show_bug.cgi?id=32831
Replace UString::Rep implementation, following introduction of ropes to JSC.

Reviewed by Darin Adler.

JavaScriptCore:

  • Remove redundant overcapacity mechanisms.
  • Reduce memory cost of Rep's.
  • Add an inline storage mechanism akin to that in WebCore's StringImpl.

~1% Sunspider progression.

(JSC::JSString::resolveRope):

  • runtime/SmallStrings.cpp:

(JSC::SmallStringsStorage::SmallStringsStorage):

  • runtime/UString.cpp:

(JSC::initializeUString):
(JSC::createRep):
(JSC::UString::createFromUTF8):
(JSC::UString::createUninitialized):
(JSC::UString::spliceSubstringsWithSeparators):
(JSC::UString::replaceRange):
(JSC::UString::ascii):
(JSC::UString::operator=):
(JSC::UString::toStrictUInt32):
(JSC::equal):

  • runtime/UString.h:

(JSC::UString::isEmpty):
(JSC::UString::cost):
(JSC::makeString):

  • runtime/UStringImpl.cpp: Added.

(JSC::UStringImpl::baseSharedBuffer):
(JSC::UStringImpl::sharedBuffer):
(JSC::UStringImpl::destroy):
(JSC::UStringImpl::computeHash):

  • runtime/UStringImpl.h: Added.

(JSC::UntypedPtrAndBitfield::UntypedPtrAndBitfield):
(JSC::UntypedPtrAndBitfield::asPtr):
(JSC::UntypedPtrAndBitfield::operator&=):
(JSC::UntypedPtrAndBitfield::operator|=):
(JSC::UntypedPtrAndBitfield::operator&):
(JSC::UStringImpl::create):
(JSC::UStringImpl::createCopying):
(JSC::UStringImpl::createUninitialized):
(JSC::UStringImpl::data):
(JSC::UStringImpl::size):
(JSC::UStringImpl::cost):
(JSC::UStringImpl::hash):
(JSC::UStringImpl::computedHash):
(JSC::UStringImpl::setHash):
(JSC::UStringImpl::identifierTable):
(JSC::UStringImpl::setIdentifierTable):
(JSC::UStringImpl::ref):
(JSC::UStringImpl::deref):
(JSC::UStringImpl::allocChars):
(JSC::UStringImpl::copyChars):
(JSC::UStringImpl::computeHash):
(JSC::UStringImpl::null):
(JSC::UStringImpl::empty):
(JSC::UStringImpl::checkConsistency):
(JSC::UStringImpl::):
(JSC::UStringImpl::UStringImpl):
(JSC::UStringImpl::operator new):
(JSC::UStringImpl::bufferOwnerString):
(JSC::UStringImpl::bufferOwnership):
(JSC::UStringImpl::isStatic):

JavaScriptGlue:

  • ForwardingHeaders/wtf/PossiblyNull.h: Added.
    • add forwarding header.

WebCore:

  • ForwardingHeaders/runtime/UStringImpl.h: Added.
    • add forwarding header.
  • platform/text/StringImpl.cpp:

(WebCore::StringImpl::ustring):

  • order of arguments to UString::Rep constructor for shared strings changed.
File:
1 added

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