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//! Data collection for processes.
//!
//! For Linux, this is handled by a custom set of functions.
//! For Windows, macOS, FreeBSD, Android, and Linux, this is handled by sysinfo.
use cfg_if::cfg_if;
use std::{borrow::Cow, time::Duration};
use super::DataCollector;
use crate::{utils::error, Pid};
cfg_if! {
if #[cfg(target_os = "linux")] {
pub mod linux;
pub use self::linux::*;
} else if #[cfg(target_os = "macos")] {
pub mod macos;
pub(crate) use self::macos::*;
} else if #[cfg(target_os = "windows")] {
pub mod windows;
pub use self::windows::*;
} else if #[cfg(target_os = "freebsd")] {
pub mod freebsd;
pub(crate) use self::freebsd::*;
} else if #[cfg(target_family = "unix")] {
pub(crate) struct GenericProcessExt;
impl UnixProcessExt for GenericProcessExt {}
}
}
cfg_if! {
if #[cfg(target_family = "unix")] {
pub mod unix;
pub use self::unix::*;
}
}
#[derive(Debug, Clone, Default)]
pub struct ProcessHarvest {
/// The pid of the process.
pub pid: Pid,
/// The parent PID of the process. A `parent_pid` of 0 is usually the root.
pub parent_pid: Option<Pid>,
/// CPU usage as a percentage.
pub cpu_usage_percent: f32,
/// Memory usage as a percentage.
pub mem_usage_percent: f32,
/// Memory usage as bytes.
pub mem_usage_bytes: u64,
/// The name of the process.
pub name: String,
/// The exact command for the process.
pub command: String,
/// Bytes read per second.
pub read_bytes_per_sec: u64,
/// Bytes written per second.
pub write_bytes_per_sec: u64,
/// The total number of bytes read by the process.
pub total_read_bytes: u64,
/// The total number of bytes written by the process.
pub total_write_bytes: u64,
/// The current state of the process (e.g. zombie, asleep).
pub process_state: (String, char),
/// Cumulative total CPU time used.
pub time: Duration,
/// This is the *effective* user ID of the process. This is only used on Unix platforms.
#[cfg(target_family = "unix")]
pub uid: Option<libc::uid_t>,
/// This is the process' user.
pub user: Cow<'static, str>,
// TODO: Additional fields
// pub rss_kb: u64,
// pub virt_kb: u64,
}
impl ProcessHarvest {
pub(crate) fn add(&mut self, rhs: &ProcessHarvest) {
self.cpu_usage_percent += rhs.cpu_usage_percent;
self.mem_usage_bytes += rhs.mem_usage_bytes;
self.mem_usage_percent += rhs.mem_usage_percent;
self.read_bytes_per_sec += rhs.read_bytes_per_sec;
self.write_bytes_per_sec += rhs.write_bytes_per_sec;
self.total_read_bytes += rhs.total_read_bytes;
self.total_write_bytes += rhs.total_write_bytes;
self.time += rhs.time;
}
}
impl DataCollector {
pub(crate) fn get_processes(&mut self) -> error::Result<Vec<ProcessHarvest>> {
cfg_if! {
if #[cfg(target_os = "linux")] {
let time_diff = self.data.collection_time
.duration_since(self.last_collection_time)
.as_secs();
linux_process_data(
self,
time_diff,
)
} else if #[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "windows", target_os = "android", target_os = "ios"))] {
sysinfo_process_data(self)
} else {
Err(error::BottomError::GenericError("Unsupported OS".to_string()))
}
}
}
}
|
