[Webkit-unassigned] [Bug 184666] New: Include tracepoints around GC work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=184666

            Bug ID: 184666
           Summary: Include tracepoints around GC work
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: joepeck at webkit.org
                CC: fpizlo at apple.com, joepeck at webkit.org,
                    mark.lam at apple.com, msaboff at apple.com,
                    sbarati at apple.com

Include tracepoints around GC work

  • It would be nice to know when a synchronous / full GC is happening.
  • It would be nice to know if tasks happening on a GC thread happen during concurrent GC or not
  • It would be nice to know how much memory is freed in a GC block

See:
• SystemTracing.h
• Tools/Tracing/SystemTracePoints.plist

Notes:
• May be as easy as creating a TraceScope with new Start/Stop enum values

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