joule-profiler-source-procfs 0.1.1

procfs source for joule-profiler
Documentation 
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//! Error types for the procfs metric source.

use thiserror::Error;
use tokio::task::JoinError;

/// Errors that can occur while reading metrics from `/proc`.
#[derive(Error, Debug)]
pub enum ProcfsError {
    /// The source was used before [`crate::Procfs::init`] was called.
    #[error("Procfs not initialized, call init first")]
    NotInitialized,

    /// An error from the `procfs` crate (e.g., process not found, parse failure).
    #[error(transparent)]
    Procfs(#[from] procfs::ProcError),

    /// An I/O error reading from `/proc` directly (e.g., `/proc/{pid}/task/{tid}/children`).
    #[error(transparent)]
    Io(#[from] std::io::Error),

    /// An error occured while joining the polling task.
    #[error("Failed to join tokio task: {0}")]
    JoinError(
        #[from]
        #[source]
        JoinError,
    ),

    #[error("procfs source mutex poisoned.")]
    MutexPoisoned,
}