[Webkit-unassigned] [Bug 149654] New: Allow an object's marking state to track The Three Colors
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Sep 29 20:43:27 PDT 2015
https://bugs.webkit.org/show_bug.cgi?id=149654
Bug ID: 149654
Summary: Allow an object's marking state to track The Three
Colors
Classification: Unclassified
Product: WebKit
Version: Other
Hardware: All
OS: All
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: fpizlo at apple.com
Currently, each object not only knows if it's marked in this GC, but also whether it's a survivor of a prior GC and whether it's in a remembered set. When we add concurrent GC, we'll also want to differentiate between being on the GC worklist (i.e. "grey") and having already been marked (i.e. "black"). But we also want to know if an object is grey the first time (and so should be allowed to trigger copying) or a subsequent time (and so should not trigger copying).
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