Ah yes !, thanks Zoltan and Sriram. On Wed, Mar 28, 2012 at 12:32 AM, Zoltan Horvath <zol...@webkit.org> wrote:
> > Hey, > > currently WebKit supports usage either of system-malloc or TCmalloc. It > depends on your platform whether USE_SYSTEM_MALLOC macro is defined to 1 or > not. > By default WebKit builds with TCmalloc, but you can pass --system-malloc > option to build-webkit and it will set the macro for you to 1. > > FastMalloc is only a wrapper, but you can find TCmalloc's implementation > in FastMalloc.cpp. > > Cheers, > > <Zoltan> > > > > > On Wed, 28 Mar 2012 01:50:24 +0200, Fabrice Robinet <cmg...@motorola.com> > wrote: > > Hi group, >> >> In short: I wonder where tryFastMalloc should be used, and what's *really* >> implemented in it (or should be). >> >> Longer story: >> According to the .cpp, it is supposed to use a cache, which would justify >> the "fast" in the function name. >> >> From FastMalloc.cpp >> >> // A malloc that uses a per-thread cache to satisfy small malloc requests. >> >> // (The time for malloc/free of a small object drops from 300 ns to 50 >> ns.) >> >> But looking at the current source tryFastMalloc looks to just wrap >> malloc. (I just updated Chromium and thus WebCore too...), >> >> I have seen tryFastMalloc used in WebCore code that is not too old (like >> WebGL), >> so I believe it is not deprecated and *should* be used, so this raises a >> couple of questions: >> >> Is current state of tryFastMalloc temporary in the sense that a cache will >> be used eventually ? >> Did I miss something about this cache in the implementation ? >> Are there (updated) guidelines about the usage of tryFastMalloc ? >> >> Thanks, >> Fabrice. >> > ______________________________**_________________ > webkit-help mailing list > webkit-help@lists.webkit.org > http://lists.webkit.org/**mailman/listinfo.cgi/webkit-**help<http://lists.webkit.org/mailman/listinfo.cgi/webkit-help> >
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