[Bug 19960] New: NtQuerySystemInformation( SystemProcessorPerformanceInformation returns stale and incorrect values

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=19960

           Summary: NtQuerySystemInformation(
                    SystemProcessorPerformanceInformation returns stale
                    and incorrect values
           Product: Wine
           Version: 1.1.29
          Platform: PC
               URL: http://rh-software.com/
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: ray at pobox.co.uk
                CC: ray at pobox.co.uk


NtQuerySystemInformation( SystemProcessorPerformanceInformation, ...) has the
following issues:

1) DpcTime, IntTime, IntCount not zeroed, they need to be rather then returning
random values.
2) KernelTime should include IdleTime. This is the case on Windows as the per
CPU Idle threads run in Kernel mode.
3) the numbers returned should be 100ns ticks, not clock ticks as this is what
Windows returns.

I have worked round all 3 of these issues in my SIV (http://rh-software.com/)
program (4.01 and later).  If they get fixed then please tell what will be
returned by the fixed version.

Both the __APPLE__ and the default sections need fixing starting from around
line 982 in dlls\ntdll\nt.c.  The first 2 fixes are trivial and I can't imagine
the last one being too dificult.  The current code seems also very strange in
that loads values into heap space when it would be much simpler and faster to
write them directly back to the user buffer.

-- 
Configure bugmail: http://bugs.winehq.org/userprefs.cgi?tab=email
Do not reply to this email, post in Bugzilla using the
above URL to reply.
------- You are receiving this mail because: -------
You are watching all bug changes.