• mlippautz's avatar
    [heap] Introduce hard limit for external memory · ce66eec8
    mlippautz authored
    We introduce, similar to regular heap, a hard and a soft limit for external memory.
    - Upon reaching the hard limit we do a full GC. The hard limit is a a delta from
      the size of external memory at last GC.
    - Upon reaching the soft limit we start incremental marking. Each further
      AdjustAmountOfExternalMemory will trigger a marking step. The step size depends
      on how far we are away from the hard limit. Further away means we have still
      some wiggle room and the step will be small. Being closer to the hard limit
      makes it more likely to trigger a full GC, so we increase the step size.
    
    BUG=chromium:621829
    
    Review-Url: https://codereview.chromium.org/2256853003
    Cr-Commit-Position: refs/heads/master@{#39133}
    ce66eec8
flag-definitions.h 53.4 KB