2011-05-26 Oliver Hunt <oliver@apple.com>
Reviewed by Geoffrey Garen.
Make RegExpCache a weak map
https://bugs.webkit.org/show_bug.cgi?id=61554
Switch to a weak map for the regexp cache, and hide that
behaviour behind RegExp::create.
When a RegExp is compiled it attempts to add itself to
the "strong" cache. This cache is a simple round-robin
buffer as was the old strong cache. Happily this can
be smaller than the old strong cache as RegExps are only
added when they're compiled so it is under less pressure
to evict.
* bytecompiler/NodesCodegen.cpp:
(JSC::RegExpNode::emitBytecode):
* runtime/RegExp.cpp:
(JSC::RegExp::RegExp):
(JSC::RegExp::create):
(JSC::RegExp::match):
* runtime/RegExp.h:
(JSC::RegExp::gcShouldInvalidateCode):
(JSC::RegExp::hasCode):
(JSC::RegExp::key):
* runtime/RegExpCache.cpp:
(JSC::RegExpCache::lookupOrCreate):
(JSC::RegExpCache::RegExpCache):
(JSC::RegExpCache::isReachableFromOpaqueRoots):
(JSC::RegExpCache::finalize):
* runtime/RegExpCache.h:
* runtime/RegExpConstructor.cpp:
(JSC::constructRegExp):
* runtime/RegExpPrototype.cpp:
(JSC::regExpProtoFuncCompile):
* runtime/StringPrototype.cpp:
(JSC::stringProtoFuncMatch):
(JSC::stringProtoFuncSearch):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@87445 268f45cc-cd09-0410-ab3c-d52691b4dbfc
9 files changed
