pagers-core 0.1.6

Core library for page cache diagnostics and control on Linux and macOS
Documentation 
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//! Events emitted during file processing for UI consumption.

use std::sync::Arc;
use std::sync::Mutex;
use std::sync::mpsc::Sender;

use crate::mincore::DefaultPageMap;

#[derive(Debug, Clone, PartialEq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub enum Event<PM = DefaultPageMap> {
    /// A file has started processing. Includes initial residency snapshot.
    FileStart {
        path: Arc<str>,
        total_pages: usize,
        residency: PM,
    },
    /// Residency update during touch/lock polling.
    FileProgress {
        path: Arc<str>,
        page_offset: usize,
        pages_walked: usize,
        resident: bool,
    },
    /// File processing complete.
    FileDone {
        path: Arc<str>,
    },
    AllDone,
}

/// `Sync` wrapper around `Sender<Event>` for use with rayon.
pub struct EventSink<PM>(Mutex<Sender<Event<PM>>>);

impl<PM> EventSink<PM> {
    pub fn new(sender: Sender<Event<PM>>) -> Self {
        Self(Mutex::new(sender))
    }

    pub fn send(&self, event: Event<PM>) {
        let _ = self.0.lock().unwrap().send(event);
    }
}