FastMalloc is a fork of tcmalloc:
http://trac.webkit.org/browser/trunk/Source/WTF/wtf/FastMalloc.cpp#L37
http://goog-perftools.sourceforge.net/doc/tcmalloc.html
from several years ago.

On Thu, Apr 12, 2012 at 2:11 AM, Hajime Morrita <[email protected]> wrote:
> Hi,
>
> The code was brought from a third party library and WebKit (WTF) needs
> some changes to the original code. It looks such changes are marked by
> WTF_CHANGES. For example, WTF shouldn't depend on gflags, which is
> disabled by the WTF_CHANGES guard.
>
> --
> morrita
>
> On Thu, Apr 12, 2012 at 6:01 PM, Arunprasad Rajkumar
> <[email protected]> wrote:
>> I don't understand the use of defineĀ  WTF_CHANGES in FastMalloc.cpp &
>> TCSystemAlloc.cpp.
>>
>> Any body help me to understand that?
>>
>> Thanks in advance.
>>
>> --
>> Arunprasad Rajkumar
>> _______________________________________________
>> webkit-dev mailing list
>> [email protected]
>> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
>>
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