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Overview
| Comment: | cpu-count (performance counter) recognition is rewritten (also resolves gcc warning: suggest parentheses around '&&' within '||') |
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| Downloads: | Tarball | ZIP archive | SQL 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 |
Context
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2019-03-08
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| 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.
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*/ SYSTEM_INFO systemInfo; unsigned int regs[4]; GetSystemInfo(&systemInfo); if (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)) { timeInfo.perfCounterAvailable = TRUE; } else { timeInfo.perfCounterAvailable = FALSE; } } #endif /* above code is Win32 only */ |
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*/ 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 */ |