Trait Profiler 

pub trait Profiler {
    // Required methods
    fn start(&mut self);
    fn end(&mut self);
}

An interface to profile iterator consumption/prodution performance

In real applications utilizing pipelining it’s important to measure the production and consumption rates of each pipeline step, to help identify current bottleneck.

ProfileEgress and ProfileIngress pinky-promise to alway call start first, and then call corresponding end before calling start again. The final end is not guaranteed to be called (eg. if the inner iterator panicked), and in particular the ProfileEgress will usually call the last start with no-corresponding end, since it’s impossible to predict if the next iterator chain step will call next() again to pull for the next item.

See TotalTimeProfiler for simple starting built-in implementation.

Required Methods

fn start(&mut self)

fn end(&mut self)

Implementors

impl<Reporter> Profiler for TotalTimeProfiler<Reporter>

where Reporter: Reporter,