[Webkit-unassigned] [Bug 28943] New: Logging fast* allocated heap usage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=28943

           Summary: Logging fast* allocated heap usage
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Template Framework
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kb at inf.u-szeged.hu


I have implemented the possibility to logging all allocations and deallocations
that goes through fast* allocation functions. This could help us profiling heap
usage. The implementation is restricted to linux/qt at the time,
because I used glibc's backtrace function to programmatically create
backtraces, and I extended only the qt build system with the option. You can
build it as "build-webkit --qt --debug CONFIG+=memlogger" (building in release
makes no sense since than the backtraces would not be informative). I
implemented a dbus listener to create the output and a new tool -MemLogDumper-
what can be used to trigger it. It has the advantage that you can create it by
running any of the binaries (QtLauncher/jsc/DumpRenderTree). I am gladly
welcome all suggestions about the stuff.

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