• Jakob Gruber's avatar
    [compiler] Add the MapUpdater lock · 605f9875
    Jakob Gruber authored
    It's locked exclusively in the MapUpdater API methods, and locked
    shared in ComputePropertyAccessInfo (CPAI).
    
    This lock is a step towards running CPAI on background threads. The
    simple lock portion is landed separately in this CL to get an early
    signal on potential lock overhead perf impact.
    
    The lock is implemented and used very conservatively at the moment:
    
    - it's a single global lock (and not e.g. per-map).
    - it's locked for the entire method call duration (instead of only in
      relevant parts).
    
    Both points can potentially be improved in the future.
    
    Bug: v8:7790
    Change-Id: I073423497e01b4901101973387a19962f953a576
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2797286Reviewed-by: 's avatarIgor Sheludko <ishell@chromium.org>
    Commit-Queue: Jakob Gruber <jgruber@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#73773}
    605f9875
access-info.cc 45.9 KB