• Sathya Gunasekaran's avatar
    Revert "Reland "Reland "[heap] Add epoch to GC tracing events""" · fb37749a
    Sathya Gunasekaran authored
    This reverts commit b614cd78.
    
    Reason for revert: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux64/40448/overview
    
    Original change's description:
    > Reland "Reland "[heap] Add epoch to GC tracing events""
    >
    > This is a reland of 3238162d
    >
    > No changes since the last reland.
    >
    > Original change's description:
    > > Reland "[heap] Add epoch to GC tracing events"
    > >
    > > This is a reland of be52501d
    > >
    > > Fix data race by not emitting the epoch for sweeper background jobs
    > > at them moment.
    > >
    > > Original change's description:
    > > > [heap] Add epoch to GC tracing events
    > > >
    > > > This CL adds the TRACE_GC_EPOCH macro, which adds the epoch as attribute
    > > > to the trace event. Use TRACE_GC_EPOCH for top-level events, nested
    > > > events can get the information from its parent.
    > > >
    > > > V8's GC needs an epoch for young and full collections, since scavenges
    > > > also occur during incremental marking. The epoch is also process-wide,
    > > > so different isolates do not reuse the same id.
    > > >
    > > > Change-Id: I8889bccce51e008374b4796445a50062bd87a45d
    > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565247
    > > > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
    > > > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
    > > > Cr-Commit-Position: refs/heads/master@{#71521}
    > >
    > > Change-Id: Ib8f4bfdc01c459955eb6db63bb6e24a8aa068f09
    > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567702
    > > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
    > > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
    > > Cr-Commit-Position: refs/heads/master@{#71567}
    >
    > TBR=ulan@chromium.org,dinfuehr@chromium.org
    >
    > Change-Id: I09dcfabbad4ef1ad50e02a227282982cd7d87997
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2571122
    > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
    > Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#71609}
    
    TBR=ulan@chromium.org,dinfuehr@chromium.org
    
    Change-Id: I9dfd37f969ec0c5e5f278e6a82732995fd82e5d9
    No-Presubmit: true
    No-Tree-Checks: true
    No-Try: true
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2574002Reviewed-by: 's avatarSathya Gunasekaran  <gsathya@chromium.org>
    Commit-Queue: Sathya Gunasekaran  <gsathya@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#71610}
    fb37749a
mark-compact.cc 187 KB