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Overview
| Comment: | cpu-count (performance counter) recognition is rewritten (also resolves gcc warning: suggest parentheses around '&&' within '||') |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | sebres-8-5-event-perf-branch |
| Files: | files | file ages | folders |
| SHA3-256: |
518ab3c556cd4642cf541ffe2d1866c0 |
| User & Date: | sebres 2019-03-08 04:37:12.545 |
Context
|
2019-03-08
| ||
| 04:38 | merge 8.5 (fixed performance test for short exec-time) check-in: 177092d5da user: sebres tags: sebres-8-5-event-perf-branch | |
| 04:37 | cpu-count (performance counter) recognition is rewritten (also resolves gcc warning: suggest parenth... check-in: 518ab3c556 user: sebres tags: sebres-8-5-event-perf-branch | |
| 04:08 | merge 8.5 - timerate is part of Tcl now (since TIP#527 got merged), conflicts resolved, merge-points... check-in: 1ca0b19a51 user: sebres tags: sebres-8-5-event-perf-branch | |
Changes
Changes to win/tclWinTime.c.
| ︙ | ︙ | |||
697 698 699 700 701 702 703 | */ SYSTEM_INFO systemInfo; unsigned int regs[4]; GetSystemInfo(&systemInfo); | > | > > | > | > > | | 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 |
*/
SYSTEM_INFO systemInfo;
unsigned int regs[4];
GetSystemInfo(&systemInfo);
if ( systemInfo.dwNumberOfProcessors >= 2
|| (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 */
)
)
) {
timeInfo.perfCounterAvailable = TRUE;
} else {
timeInfo.perfCounterAvailable = FALSE;
}
}
#endif /* above code is Win32 only */
|
| ︙ | ︙ |