Crate linux_perf_event_reader
source · [−]Expand description
linux-perf-event-reader
This crate lets you parse Linux perf events and associated structures.
Example
use linux_perf_event_reader::{PerfEventAttr, RawData, RecordType};
use linux_perf_event_reader::records::{CommOrExecRecord, ParsedRecord, RawRecord, RecordParseInfo};
// Read the perf_event_attr data.
let attr_data = vec![
0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 229, 3, 0, 0, 0, 0, 0, 0, 47, 177, 0,
0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 3, 183, 215, 97, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 15,
255, 0, 0, 0, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 104, 0, 0, 0, 0, 0, 0, 0, 128, 0,
0, 0, 0, 0, 0, 0,
];
let attr =
PerfEventAttr::parse::<_, byteorder::LittleEndian>(&attr_data[..], None).unwrap();
let parse_info = RecordParseInfo::from_attr(&attr);
let body = vec![
108, 71, 8, 0, 108, 71, 8, 0, 100, 117, 109, 112, 95, 115, 121, 109, 115, 0, 0, 0, 0,
0, 0, 0, 108, 71, 8, 0, 108, 71, 8, 0, 56, 27, 248, 24, 104, 88, 4, 0,
];
let body_raw_data = RawData::from(&body[..]);
let raw_record = RawRecord::new(RecordType(3), 0x2000, body_raw_data);
let parsed_record = raw_record
.to_parsed::<byteorder::LittleEndian>(&parse_info)
.unwrap();
assert_eq!(
parsed_record,
ParsedRecord::Comm(CommOrExecRecord {
pid: 542572,
tid: 542572,
name: RawData::Single(b"dump_syms"),
is_execve: true
})
);Modules
Structs
perf_event_attr
perf_event_header
The format of the data returned by read() on a perf event fd, as specified by attr.read_format:
Enums
Specifies how precise the instruction address should be.
With perf record -e you can set the precision by appending /p to the
event name, with varying numbers of ps.
A slice of u8 data that can have non-contiguous backing storage split into two pieces, and abstracts that split away so that users can pretend to deal with a contiguous slice.