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    • mikhail.naganov@gmail.com's avatar
      Fix CPU profiling for Crankshaft. · 56788625
      mikhail.naganov@gmail.com authored
      The main issue was due to multiple recompilations of functions.  Now
      code objects are grouped by function using SFI object address.
      JSFunction objects are no longer tracked, instead we track SFI object
      moves. To pick a correct code version, we now sample return addresses
      instead of JSFunction addresses.
      
      tools/{linux|mac|windows}-tickprocessor scripts differentiate
      between code optimization states for the same function
      (using * and ~ prefixes introduced earlier).
      
      DevTools CPU profiler treats all variants of function code as
      a single function.
      
      ll_prof treats each optimized variant as a separate entry, because
      it can disassemble each one of them.
      
      tickprocessor.py not updated -- it is deprecated and will be removed.
      
      BUG=v8/1087,b/3178160
      TEST=all existing tests pass, including Chromium layout tests
      
      Review URL: http://codereview.chromium.org/6551011
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      56788625
  18. 13 Dec, 2010 1 commit
  19. 23 Nov, 2010 1 commit
  20. 22 Nov, 2010 4 commits
  21. 18 Nov, 2010 1 commit
  22. 20 Sep, 2010 1 commit
    • mikhail.naganov@gmail.com's avatar
      Show RegExp calls in the profile. · c1903ce3
      mikhail.naganov@gmail.com authored
      It turns out they were filtered out. But when I unfiltered them, I
      discovered another issue: when DevTools run, regexp literals get
      recompiled each time they called (looks like this is concerned with
      switching to full compiler), so I ended up having multiple entries for
      the same regexp. To fix this, I changed the way of how code entries
      equivalence is considered.
      
      BUG=crbug/55999
      TEST=cctest/test-profile-generator/ProfileNodeFindOrAddChildForSameFunction
      (the test isn't for the whole issue, but rather for equivalence testing)
      
      Review URL: http://codereview.chromium.org/3426008
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5492 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      c1903ce3
  23. 18 Aug, 2010 1 commit
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  27. 18 May, 2010 1 commit
    • mikhail.naganov@gmail.com's avatar
      CPU profiler: add secure profiles by filtering out functions using security tokens. · 3d7ce8ac
      mikhail.naganov@gmail.com authored
      As several pages can run in a single V8 instance, it is possible to
      have functions from different security contexts intermixed in a single
      CPU profile.  To avoid exposing function names from one page to
      another, filtering is introduced.
      
      The basic idea is that instead of capturing return addresses from
      stack, we're now capturing JSFunction addresses (as we anyway work
      only with JS stack frames.)  Each JSFunction can reach out for
      context's security token. When providing a profile to a page, the
      profile is filtered using the security token of caller page. Any
      functions with different security tokens are filtered out (yes, we
      only do fast path check for now) and their ticks are attributed to
      their parents.
      
      Review URL: http://codereview.chromium.org/2083005
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4673 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      3d7ce8ac
  28. 15 Apr, 2010 1 commit
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  31. 06 Apr, 2010 2 commits