Struct SimpleClock

pub struct SimpleClock {
    pub instret: u64,
}

A simple implementation of the Clock trait.

This implementation only counts instructions. The CSRs cycle, time, and instret all return the same counter to create a very basic simulation of time.

With the serialize crate feature, this structure is serializable using Serde.

Fields

instret: u64

Instruction counter CSR.

Implementations

impl SimpleClock

pub fn new() -> Self

Create an instance with the counter starting at 0.

Trait Implementations

impl Clock for SimpleClock

fn read_cycle(&self) -> u64

Read the cycle CSR, which counts the number of CPU cycles executed.

fn read_time(&self) -> u64

Read the time CSR, which holds wall-clock time.

fn read_instret(&self) -> u64

Read the instret CSR, which counts the number of instructions executed.

fn progress(&mut self, _op: &Op)

Progress clocks, after the given instruction was executed.

fn check_quota(&self) -> bool

Check execution quotas. Called at the very start of Interp::step.

impl Clone for SimpleClock

fn clone(&self) -> SimpleClock

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SimpleClock

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SimpleClock

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for SimpleClock

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for SimpleClock