Struct linux_perf_data::PerfFileReader

pub struct PerfFileReader<R: Read> {
    pub perf_file: PerfFile,
    pub record_iter: PerfRecordIter<R>,
}

A parser for the perf.data file format.

Example

use linux_perf_data::{AttributeDescription, PerfFileReader, PerfFileRecord};

let file = std::fs::File::open("perf.data")?;
let reader = std::io::BufReader::new(file);
let PerfFileReader { mut perf_file, mut record_iter } = PerfFileReader::parse_file(reader)?;
let event_names: Vec<_> =
    perf_file.event_attributes().iter().filter_map(AttributeDescription::name).collect();
println!("perf events: {}", event_names.join(", "));

while let Some(record) = record_iter.next_record(&mut perf_file)? {
    match record {
        PerfFileRecord::EventRecord { attr_index, record } => {
            let record_type = record.record_type;
            let parsed_record = record.parse()?;
            println!("{:?} for event {}: {:?}", record_type, attr_index, parsed_record);
        }
        PerfFileRecord::UserRecord(record) => {
            let record_type = record.record_type;
            let parsed_record = record.parse()?;
            println!("{:?}: {:?}", record_type, parsed_record);
        }
    }
}

Fields

perf_file: PerfFile

record_iter: PerfRecordIter<R>

Implementations

impl<C: Read + Seek> PerfFileReader<C>

pub fn parse_file(cursor: C) -> Result<Self, Error>