668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
|
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
|
+
-
-
+
+
+
+
+
-
-
+
+
+
+
|
*/
SYSTEM_INFO systemInfo;
unsigned int regs[4];
GetSystemInfo(&systemInfo);
if ( systemInfo.dwNumberOfProcessors >= 2
if (TclWinCPUID(0, regs) == TCL_OK
&& regs[1] == 0x756e6547 /* "Genu" */
|| (TclWinCPUID(0, regs) == TCL_OK
&& (
(
regs[1] == 0x756e6547 /* "Genu" */
&& regs[3] == 0x49656e69 /* "ineI" */
&& regs[2] == 0x6c65746e /* "ntel" */
&& TclWinCPUID(1, regs) == TCL_OK
&& (( ((regs[0]&0x00000F00) == 0xF00) /* Pentium 4 */
|| ((regs[0]&0x00000F00) == 0x600) ) /* or compatible (VM) */
&& ((regs[0] & 0x0FF00000) /* Extended family (bits 20-27) */
|| (regs[3] & 0x10000000))) /* Hyperthread (bit 28) */
)
|| (((regs[1]&0x00FF0000) >> 16) >= 2 /* CPU count */
|| systemInfo.dwNumberOfProcessors >= 2)) {
|| ((regs[1]&0x00FF0000) >> 16) >= 2 /* CPU count */
)
)
) {
timeInfo.perfCounterAvailable = TRUE;
} else {
timeInfo.perfCounterAvailable = FALSE;
}
}
#endif /* above code is Win32 only */
|