Struct PerfFileReader

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

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>

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

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

Auto Trait Implementations§

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impl<R> Freeze for PerfFileReader<R>
where R: Freeze,

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impl<R> RefUnwindSafe for PerfFileReader<R>
where R: RefUnwindSafe,

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impl<R> Send for PerfFileReader<R>
where R: Send,

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impl<R> Sync for PerfFileReader<R>
where R: Sync,

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impl<R> Unpin for PerfFileReader<R>
where R: Unpin,

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impl<R> UnwindSafe for PerfFileReader<R>
where R: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.