[Webkit-unassigned] [Bug 67823] New: [NRWT] Provides a simple LRU cache class in Python.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=67823

           Summary: [NRWT] Provides a simple LRU cache class in Python.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: hayato at chromium.org
                CC: makabi at google.com
            Blocks: 67479


In CSSWG reftests, there are a lot of cases that the same HTML file is used as a reference file in many tests.
It should be avoided that calling DumpRenderTree for the same file many times. We should cache the rendering result somehow for the same HTML file.
Note that we need image itself as weel as image hash so that we can 'diff' images later.
At the same time, we shouldn't cache all results because it consumes a lot of memory.

It'd be nice to have simple LRU cache class because there is locality of reference in such HTML files.

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