Struct Clock 

pub struct Clock { /* private fields */ }

clock: how much time has passed, and waiting for more of it to pass.

Implementations

impl Clock

pub fn real() -> Self

Real monotonic time, measured from the instant this host is built.

The origin is the host’s own construction rather than the Unix epoch, so granting clock never discloses the wall-clock date.

pub fn virtual_clock(time: VirtualTime) -> Self

A clock whose time moves only when time is advanced.

sleep on a virtual clock advances time by the requested duration and returns immediately: the host satisfies the wait by moving its own clock instead of by blocking. A program cannot observe the difference except that it finishes at once, which is what makes a test that depends on elapsed time deterministic.

Trait Implementations

impl HostApi for Clock

fn module_schema(&self) -> ModuleSchema

The whole of what this module declares about itself: the name Cove source uses, the capability a host must grant for it, the operations it exposes, the types it declares, and the kinds of resource it can open.

fn call_with( &self, op: &str, args: Vec<Value>, back: &mut dyn Reentry, ) -> Result<Value, RuntimeError>

Invokes one operation.

fn call(&self, op: &str, args: Vec<Value>) -> Result<Value, RuntimeError>

Invokes one operation.

fn call_resource( &self, handle: &ResourceHandle, op: &str, args: Vec<Value>, back: &mut dyn Reentry, ) -> Result<Value, RuntimeError>

Invokes one operation on a handle this module issued.