[Issue 6040] New: std.cpuid and core.cpuid return different values for some methods

d-bugmail at puremagic.com d-bugmail at puremagic.com
Fri May 20 10:33:25 PDT 2011


http://d.puremagic.com/issues/show_bug.cgi?id=6040

           Summary: std.cpuid and core.cpuid return different values for
                    some methods
           Product: D
           Version: D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: kai at redstar.de


--- Comment #0 from kai at redstar.de 2011-05-20 10:29:14 PDT ---
Created an attachment (id=987)
Implement std.cpuid in terms of core.cpuid

std.cpuid (from Phobos) duplicates functionality from core.cpuid (from
druntime). Worse, some methods return different values. E.g. hyperThreading()
and threadsPerCPU(). 
(BTW: std.cpuid.threadsPerCPU() returns 16 for my i7, which is totally wrong.)

The attached patch removes the implementation from std.cpuid and uses alias to
reuse core.cpuid while preserving API compatibility.

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