• Peter Marshall's avatar
    [tools] Add a VMState for Atomics.wait · e8ba5699
    Peter Marshall authored
    We will use this state in devtools via the inspector to indicate
    whether a thread is currently stuck polling in atomics.wait.
    
    VMState already distinguishes the important states we care about which
    are idle vs. running JS. We also want to know the state for
    atomics.wait(), which is commonly used in WebWorkers to poll the main
    page for work to do.
    
    This CL just adds and maintains the state and adds assertions in
    atomics tests. Another CL will emit inspector notifications when the
    VMState changes in a way that the inspector cares about.
    
    Re-flow comments as a drive-by cleanup.
    
    Bug: chromium:1025490
    Change-Id: I961051bfb846aa20454a56214310370ea8e47d1c
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2033168
    Commit-Queue: Peter Marshall <petermarshall@chromium.org>
    Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#66071}
    e8ba5699
sampling-heap-profiler.cc 11.2 KB