[Webkit-unassigned] [Bug 170773] New: WebAssembly: free cached fast memories if they go unused for a while

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=170773

            Bug ID: 170773
           Summary: WebAssembly: free cached fast memories if they go
                    unused for a while
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jfbastien at apple.com
                CC: fpizlo at apple.com, jfbastien at apple.com,
                    keith_miller at apple.com, mark.lam at apple.com,
                    msaboff at apple.com, sbarati at apple.com
        Depends on: 170628
            Blocks: 159775

As of bug #170628 the GC knows some things about WebAssembly fast memories. Maybe it should know a bit more, and free up unused fast memories if they seem easy to get but haven't been getting much use recently.

This is at odds with pre-allocation to avoid fragmentation, so we have to be careful.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=159775
[Bug 159775] WebAssembly: support the newer spec
https://bugs.webkit.org/show_bug.cgi?id=170628
[Bug 170628] WebAssembly: manage memory better
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