https://bugs.webkit.org/show_bug.cgi?id=105966

Reviewed by Gavin Barraclough.

CodeBlockKey => SourceCodeKey because the key is not a CodeBlock.

m_recentlyUsedFunctionCode => m_recentlyUsedFunctions to match other names.

GlobalFunctionKey => FunctionKey because the key is not unique to globalness.

m_cachedGlobalFunctions => m_globalFunctions because "cached" is redundant
for data members in an object called "CodeCache".

kMaxRootCodeBlockEntries => kMaxRootEntries because there are no non-CodeBlock
entries in a CodeBlock cache.

kMaxFunctionCodeBlocks => kMaxChildFunctionEntries to clarify that this
number models a parent-child relationship.

Also removed the initial "k" from enum constants. That's an interesting
style for calling out constants, but it's not the WebKit style.

Finally, a behavior change: Use MaxRootEntries for the limit on global
functions, and not MaxChildFunctionEntries. Previously, there was an
unused constant that seemed to have been intended for this purpose.

* runtime/CodeCache.cpp:
(JSC::CodeCache::makeSourceCodeKey):
(JSC::CodeCache::getCodeBlock):
(JSC::CodeCache::generateFunctionCodeBlock):
(JSC::CodeCache::makeFunctionKey):
(JSC::CodeCache::getFunctionExecutableFromGlobalCode):
(JSC::CodeCache::usedFunctionCode):
* runtime/CodeCache.h:
(JSC::CodeCache::clear):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138675 268f45cc-cd09-0410-ab3c-d52691b4dbfc