Struct TscTimePoint
A time point maintained through the TSC timer
struct TscTimePoint
;
TSC is a time counter maintained directly by the CPU. It counts how many "cycles" (loosly corresponding to actual CPU cycles) since an arbitrary start point. It is read by a single assembly instruciton, and is more efficient to read than kernel operatons.
Fields
| Name | Type | Description |
|---|---|---|
cycles
|
long | Time represented by TscTimePoint in units of cycles. |
cyclesPerMsec
|
immutable(long) | Provide the cycles/time ratio for the current machine. |
cyclesPerMsecDivisor
|
immutable(S64Divisor) | Prepared dividor for the cycles/time value |
cyclesPerSecond
|
immutable(long) | Provide the cycles/time ratio for the current machine. |
cyclesPerSecondDivisor
|
immutable(S64Divisor) | Prepared dividor for the cycles/time value |
cyclesPerUsec
|
immutable(long) | Provide the cycles/time ratio for the current machine. |
cyclesPerUsecDivisor
|
immutable(S64Divisor) | Prepared dividor for the cycles/time value |
Methods
| Name | Description |
|---|---|
diff
|
Calculate difference between two TscTimePoint in the given units |
fromNow
|
Calculate a TscTimePoint for a set duration from now |
fromSysTime
|
Calculate a TscTimePoint for a time given in systime from now |
hardNow
|
Get a TscTimePoint representing now. |
now
|
Get a TscTimePoint representing now. |
setHardNowThreshold
|
Set the frequency with which we take a hard TSC reading |
to
|
Convert to any of the units accepted by toDuration |
toCycles
|
Various conversion functions |
toDuration
|
Various conversion functions |
toMsecs
|
Various conversion functions |
toUsecs
|
Various conversion functions |
Aliases
| Name | Description |
|---|---|
frequency
|
Provide the cycles/time ratio for the current machine. |