Struct pmu_x86::Counter

pub struct Counter { /* private fields */ }

A logical counter object to correspond to a physical PMC

Implementations

impl Counter

pub fn new(event: EventType) -> Result<Counter, &'static str>

Creates a Counter object and assigns a physical counter for it. If it’s a general PMC, writes the UMASK and Event Code to the relevant MSR, but leaves enable bit clear.

pub fn start(&mut self) -> Result<(), &'static str>

Starts the count.

pub fn get_count_since_start(&self) -> Result<u64, &'static str>

Allows user to get count since start without stopping/releasing the counter.

pub fn end(self) -> Result<u64, &'static str>

Stops counting, releases the counter, and returns the count of events since the counter was initialized. This will consume the counter object since after freeing the counter, the counter should not be accessed.

pub fn diff(&self) -> u64

lightweight function with no checks to get the counter value from when it was started.

Trait Implementations

impl Drop for Counter

fn drop(&mut self)

Executes the destructor for this type.