World imports
- Imports:
- interface
wasi:clocks/monotonic-clock@0.2.0 - interface
wasi:clocks/wall-clock@0.2.0
- interface
Import interface wasi:clocks/monotonic-clock@0.2.0
WASI Monotonic Clock is a clock API intended to let users measure elapsed time.
It is intended to be portable at least between Unix-family platforms and Windows.
A monotonic clock is a clock which has an unspecified initial value, and successive reads of the clock will produce non-decreasing values.
It is intended for measuring elapsed time.
Types
type instant
u64
Hermes does not support `poll` use wasi:io/poll@0.2.0.{pollable}; An instant in time, in nanoseconds. An instant is relative to an unspecified initial value, and can only be compared to instances from the same monotonic-clock.
type duration
u64
A duration of time, in nanoseconds.
Functions
now: func
Read the current value of the clock.
The clock is monotonic, therefore calling this function repeatedly will produce a sequence of non-decreasing values.
Return values
resolution: func
Query the resolution of the clock. Returns the duration of time corresponding to a clock tick.
Return values
Import interface wasi:clocks/wall-clock@0.2.0
WASI Wall Clock is a clock API intended to let users query the current time. The name "wall" makes an analogy to a "clock on the wall", which is not necessarily monotonic as it may be reset.
It is intended to be portable at least between Unix-family platforms and Windows.
A wall clock is a clock which measures the date and time according to some external reference.
External references may be reset, so this clock is not necessarily monotonic, making it unsuitable for measuring elapsed time.
It is intended for reporting the current date and time for humans.
Types
record datetime
A time and date in seconds plus nanoseconds.
Record Fields
Functions
now: func
Read the current value of the clock.
This clock is not monotonic, therefore calling this function repeatedly will not necessarily produce a sequence of non-decreasing values.
The returned timestamps represent the number of seconds since 1970-01-01T00:00:00Z, also known as POSIX's Seconds Since the Epoch, also known as Unix Time.
The nanoseconds field of the output is always less than 1000000000.
Return values
resolution: func
Query the resolution of the clock.
The nanoseconds field of the output is always less than 1000000000.