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Review URL: http://codereview.chromium.org/6685088

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Review URL: http://codereview.chromium.org/6190002

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Thus, now there is a "generic" SplayTree and its Zone-bound
specialization ZoneSplayTree.

This is needed for my reimplementation of profiler tree generation in
C++. As generation is performed in a separate thread, Zone can't be
used, because it intentionally not thread-safe.

Review URL: http://codereview.chromium.org/660280

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positives, but I've restructured the code to be more explicit.

Review URL: http://codereview.chromium.org/159192

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This issue was raised by Brett Wilson while reviewing my changelist for readability. Craig Silverstein (one of C++ SG maintainers) confirmed that we should declare one namespace per line. Our way of namespaces closing seems not violating style guides (there is no clear agreement on it), so I left it intact.

Review URL: http://codereview.chromium.org/115756


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TBR=kasperl

Review URL: http://codereview.chromium.org/13210

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- Do not keep growing the zone segment size exponentially. By putting
  an upper limit on the segment size we limit the requirements for
  contiguous memory allocation.

Review URL: http://codereview.chromium.org/12984

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scope, leading to zone exhaustion.  Added assertion that a zone scope
exists on zone allocation.


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stack limit and that the zone allocation limit hasn't been met.


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Added presubmit step to check copyright.



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unsafe calls to Zone::DeleteAll() from parser and use ZoneScopes
instead.


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