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static inline Tcl_WideInt
NativeCalc100NsOffs(
LONGLONG ciPerfCounter,
LONGLONG curCounter
) {
curCounter -= ciPerfCounter; /* current distance */
if (!curCounter) {
return 0; /* virtual time without offset */
}
/* virtual time with offset */
return curCounter * 10000000 / timeInfo.nominalFreq;
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static inline Tcl_WideInt
NativeCalc100NsOffs(
LONGLONG ciPerfCounter,
LONGLONG curCounter
) {
curCounter -= ciPerfCounter; /* current distance */
/* virtual time without offset (or nominal frequency equals 10000000) */
if (!curCounter || timeInfo.nominalFreq == 10000000) {
return (Tcl_WideInt)curCounter;
}
/* virtual time with offset, try to avoid overflow in signed wide int */
if (curCounter < WIDE_MAX / 10000000) {
return (Tcl_WideInt)curCounter * 10000000 / timeInfo.nominalFreq;
}
return (Tcl_WideInt)(curCounter / ((double)timeInfo.nominalFreq / 10000000));
}
/*
* Representing the number of 100-nanosecond intervals since posix epoch.
*/
static inline Tcl_WideInt
GetSystemTimeAsVirtual(void)
|