After rendering about 200 pages on my platform port of WebKit, I
seem to be seeing some memory leaks involving the code in KJS,
totalling 30-70MB. I have included a subgraph of the call graph for
the leaking functions. I'm not familiar with the KJS code. Is it
possible that circular references between different types of nodes
are preventing their final destruction? If not, what are some
possible causes I should investigate?
WebCore::ScriptController::evaluate->KJS::Interpreter::evaluate-
>(KJS::Machine::execute, KJS::Parser::parse)
KJS::Parser::parse->kjsyyparse->(KJS::FunctionBodyNode::create,
KJSLexerLex, makeFunctionCallNode, KJS::SourceElements::append)
In kjsyyparse alone, it's leaking 34MB.
Incorrect reference counting in the parser usually occurs in cases
like syntax errors. You might want to look into that. Another
interesting test would be to see if the same bug reproduced on other
ports, like the Windows or Mac ports.
Geoff
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