• Jakob Kummerow's avatar
    [wasm][32-bit] Always grow memory by a factor · 41024b43
    Jakob Kummerow authored
    On 32-bit platforms, we generally don't over-allocate backing stores
    for Wasm memories. That leads to quadratic overall complexity of
    repeated growth operations by a few pages each though. To fix that,
    this patch introduces a small over-allocation factor: when we have
    to reallocate to grow a memory, we now grow by at least 1/8th of the
    memory's previous size.
    
    Bug: chromium:1294262
    Change-Id: I89b5e974c75aac78bece8fcd72fb7a2184345153
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472496
    Auto-Submit: Jakob Kummerow <jkummerow@chromium.org>
    Reviewed-by: 's avatarClemens Backes <clemensb@chromium.org>
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#79193}
    41024b43
wasm-backing-store-unittest.cc 4.46 KB