[Webkit-unassigned] [Bug 258734] New: All path segments should be coded by StreamConnectionEncoder

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258734

            Bug ID: 258734
           Summary: All path segments should be coded by
                    StreamConnectionEncoder
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sabouhallawa at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

After 265569 at main, the composite path segments, such as PathDataLine, became decodable by IPC coders only. We need to add StreamConnectionEncoder as additional coder for encoding and decoding them. The reason for this change in 265569 at main, was the serialization.in files do not know hot to deal with template struct/class. These composite path segments are defined as templates for two types. So the encoding/decoding code was implemented in WebCoreArgumentCoders.h. This caused a perf regression in MotionMark CanvasLines subtest.

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