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use std::borrow::Cow;
use std::fmt;
use crate::prelude::*;
/// CGROUP records indicate when a new cgroup is created and activated.
///
/// This struct corresponds to `PERF_RECORD_CGROUP`. See the [manpage] for more
/// documentation.
///
/// [manpage]: http://man7.org/linux/man-pages/man2/perf_event_open.2.html
#[derive(Clone)]
pub struct CGroup<'a> {
/// The cgroup ID.
pub id: u64,
/// Path of the cgroup from the root.
pub path: Cow<'a, [u8]>,
}
impl<'a> CGroup<'a> {
/// Get `path` as a [`Path`](std::path::Path).
#[cfg(unix)]
pub fn path_os(&self) -> &std::path::Path {
use std::ffi::OsStr;
use std::os::unix::ffi::OsStrExt;
use std::path::Path;
Path::new(OsStr::from_bytes(&self.path))
}
/// Convert all the borrowed data in this `CGroup` into owned data.
pub fn into_owned(self) -> CGroup<'static> {
CGroup {
path: self.path.into_owned().into(),
..self
}
}
}
impl<'p> Parse<'p> for CGroup<'p> {
fn parse<B, E>(p: &mut Parser<B, E>) -> ParseResult<Self>
where
E: Endian,
B: ParseBuf<'p>,
{
Ok(Self {
id: p.parse()?,
path: p.parse_rest_trim_nul()?,
})
}
}
impl fmt::Debug for CGroup<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("CGroup")
.field("id", &self.id)
.field("path", &crate::util::fmt::ByteStr(&self.path))
.finish()
}
}