• Samuel Groß's avatar
    [sandbox] Improve the default ArrayBufferAllocator for the sandbox · f08547af
    Samuel Groß authored
    Rather than using a page allocator and rounding all allocation request
    sizes up to the next multiple of the OS page size, we now use a
    base::RegionAllocator with a "page size" of 128 as a compromise between
    the number of regions it needs to manage and the amount of wasted memory
    due to allocations being rounded up to a multiple of that page size.
    While this is still not as performant as a "real" allocator, it does
    noticeably improve performance when allocating lots of ArrayBuffers.
    
    Bug: chromium:1340224
    Change-Id: I56d1ab066ba55710864bdad048fb620078b2d8c2
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3913346
    Commit-Queue: Samuel Groß <saelo@chromium.org>
    Reviewed-by: 's avatarIgor Sheludko <ishell@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#83396}
    f08547af
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