perf-event-data

Parse data emitted by perf_event_open into usable rust structs.

Getting Started

• The Record type is an enum with every known record type.
• The parse module has what you need to parse bytes into known records.

Putting it all together, we get

use perf_event_data::endian::Native;
use perf_event_data::parse::{ParseConfig, Parser};
use perf_event_data::Record;

fn main() {
    let data: &[u8] = &[
        0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00,
        0x16, 0x4C, 0x01, 0x00, 0x17, 0x4C, 0x01, 0x00,
        0x00, 0xA0, 0x48, 0x96, 0x4F, 0x7F, 0x00, 0x00,
        0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
        0x00, 0xA0, 0x48, 0x96, 0x4F, 0x7F, 0x00, 0x00,
        0x2F, 0x2F, 0x61, 0x6E, 0x6F, 0x6E, 0x00, 0x00, 
    ];

    let config = ParseConfig::<Native>::default();
    let mut parser = Parser::new(data, config);
    let record: Record = parser.parse().expect("failed to parse the record");

    // ...
}

See Also

• The perf-event2 crate allows you to set up sampled perf event counters. You will likely need this, or an equivalent crate, in order to get the event data this crate parses.
• The linux-perf-event-reader crate provides similar functionality to this one.