package mirage-clock

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Monotonic clock

Clock returning monotonic time since an arbitrary point. To be used for eg. profiling.

include Mirage_device.S

type +'a io

The type for potentially blocking I/O operation

type t

The type representing the internal state of the device

val disconnect : t -> unit io

Disconnect from the device. While this might take some time to complete, it can never result in an error.

val elapsed_ns : t -> int64

elapsed_ns () is a monotonically increasing count of nanoseconds elapsed since some arbitrary point

val period_ns : t -> int64 option

period_ns () is Some ns representing the clock's nanosecond period ns, if known