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    • fmeawad's avatar
      [RuntimeCallStats] Move tracing runtime instrumentation closer to the original version. · e5ba156d
      fmeawad authored 
      After we landed the tracing runtime call stats, which gave
us a lot of V8 insight in tracing, we noticed that there is
some arising issues and discrepancies.

Issues include:
Missing trace events, that happened due to
transforming those trace events into runtime calls

Discrepancies include:
Missing categories in Runtime call stats like GC,
because we are not handling the Scoped runtime calls
properly in the tracing version.

To reduce/eliminate those issue, we are taking a small
step back. We are unifying the RuntimeStats code and
using the original one. That would allow us to use all
the original probes but emit trace events from them.
We are also putting back the trace-events in their place.

The output from both system should be intact (Except of
the addition of the missing trace-events).

Also as a byproduct, we are reducing the number of context
scopes by half since we are using the same scope as
runtime call stats.

As a follow up to this CL, we will address the non-scoped
Runtime Call Stats (mainly in GC).
BUG=642373

Review-Url: https://codereview.chromium.org/2296243002
Cr-Commit-Position: refs/heads/master@{#39180}
      e5ba156d
  15. 10 Aug, 2016 1 commit
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  27. 13 Jun, 2016 1 commit
  29. 12 Jun, 2016 1 commit
  31. 26 Feb, 2016 1 commit
    • fmeawad's avatar
      Reland: Add Scoped Context Info (Isolate) to V8 Traces · 567e5839
      fmeawad authored 
      This patch adds the newly added support for contexts in V8 Tracing, as well
as use it to mark all the entry points for a V8 Isolate.

Update for reland: The current tracing interface needs to be updated (AddTraceEvent),
but the embedders need to migrate to the new version before removing the old version.
(Reland of: https://codereview.chromium.org/1686233002)

The revert happened because the 2 signatures of the old and new AddTraceEvent where different
so it threw an overload-virtual error on cross arm debug. This issue is temporary, and to solve
it, I added an implementation of the old and new everywhere until the embedder implements the new.

BUG=v8:4565
LOG=N

R=jochen@chromium.org

Review URL: https://codereview.chromium.org/1704253002

Cr-Commit-Position: refs/heads/master@{#34332}
      567e5839
  33. 17 Feb, 2016 2 commits
  35. 16 Feb, 2016 1 commit
  37. 17 Dec, 2015 1 commit