1 files changed, 0 insertions, 237 deletions
diff --git a/vendor/tracing-subscriber-0.3.3/src/reload.rs b/vendor/tracing-subscriber-0.3.3/src/reload.rs
deleted file mode 100644
index b8ec67dfa..000000000
--- a/vendor/tracing-subscriber-0.3.3/src/reload.rs
+++ /dev/null
@@ -1,237 +0,0 @@
-//! Wrapper for a `Layer` to allow it to be dynamically reloaded.
-//!
-//! This module provides a [`Layer` type] which wraps another type implementing
-//! the [`Layer` trait], allowing the wrapped type to be replaced with another
-//! instance of that type at runtime.
-//!
-//! This can be used in cases where a subset of `Subscriber` functionality
-//! should be dynamically reconfigured, such as when filtering directives may
-//! change at runtime. Note that this layer introduces a (relatively small)
-//! amount of overhead, and should thus only be used as needed.
-//!
-//! [`Layer` type]: struct.Layer.html
-//! [`Layer` trait]: ../layer/trait.Layer.html
-use crate::layer;
-use crate::sync::RwLock;
-
-use std::{
-    error, fmt,
-    marker::PhantomData,
-    sync::{Arc, Weak},
-};
-use tracing_core::{
-    callsite, span,
-    subscriber::{Interest, Subscriber},
-    Event, Metadata,
-};
-
-/// Wraps a `Layer`, allowing it to be reloaded dynamically at runtime.
-#[derive(Debug)]
-pub struct Layer<L, S> {
-    // TODO(eliza): this once used a `crossbeam_util::ShardedRwLock`. We may
-    // eventually wish to replace it with a sharded lock implementation on top
-    // of our internal `RwLock` wrapper type. If possible, we should profile
-    // this first to determine if it's necessary.
-    inner: Arc<RwLock<L>>,
-    _s: PhantomData<fn(S)>,
-}
-
-/// Allows reloading the state of an associated `Layer`.
-#[derive(Debug)]
-pub struct Handle<L, S> {
-    inner: Weak<RwLock<L>>,
-    _s: PhantomData<fn(S)>,
-}
-
-/// Indicates that an error occurred when reloading a layer.
-#[derive(Debug)]
-pub struct Error {
-    kind: ErrorKind,
-}
-
-#[derive(Debug)]
-enum ErrorKind {
-    SubscriberGone,
-    Poisoned,
-}
-
-// ===== impl Layer =====
-
-impl<L, S> crate::Layer<S> for Layer<L, S>
-where
-    L: crate::Layer<S> + 'static,
-    S: Subscriber,
-{
-    fn on_layer(&mut self, subscriber: &mut S) {
-        try_lock!(self.inner.write(), else return).on_layer(subscriber);
-    }
-
-    #[inline]
-    fn register_callsite(&self, metadata: &'static Metadata<'static>) -> Interest {
-        try_lock!(self.inner.read(), else return Interest::sometimes()).register_callsite(metadata)
-    }
-
-    #[inline]
-    fn enabled(&self, metadata: &Metadata<'_>, ctx: layer::Context<'_, S>) -> bool {
-        try_lock!(self.inner.read(), else return false).enabled(metadata, ctx)
-    }
-
-    #[inline]
-    fn on_new_span(&self, attrs: &span::Attributes<'_>, id: &span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_new_span(attrs, id, ctx)
-    }
-
-    #[inline]
-    fn on_record(&self, span: &span::Id, values: &span::Record<'_>, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_record(span, values, ctx)
-    }
-
-    #[inline]
-    fn on_follows_from(&self, span: &span::Id, follows: &span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_follows_from(span, follows, ctx)
-    }
-
-    #[inline]
-    fn on_event(&self, event: &Event<'_>, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_event(event, ctx)
-    }
-
-    #[inline]
-    fn on_enter(&self, id: &span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_enter(id, ctx)
-    }
-
-    #[inline]
-    fn on_exit(&self, id: &span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_exit(id, ctx)
-    }
-
-    #[inline]
-    fn on_close(&self, id: span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_close(id, ctx)
-    }
-
-    #[inline]
-    fn on_id_change(&self, old: &span::Id, new: &span::Id, ctx: layer::Context<'_, S>) {
-        try_lock!(self.inner.read()).on_id_change(old, new, ctx)
-    }
-}
-
-impl<L, S> Layer<L, S>
-where
-    L: crate::Layer<S> + 'static,
-    S: Subscriber,
-{
-    /// Wraps the given `Layer`, returning a `Layer` and a `Handle` that allows
-    /// the inner type to be modified at runtime.
-    pub fn new(inner: L) -> (Self, Handle<L, S>) {
-        let this = Self {
-            inner: Arc::new(RwLock::new(inner)),
-            _s: PhantomData,
-        };
-        let handle = this.handle();
-        (this, handle)
-    }
-
-    /// Returns a `Handle` that can be used to reload the wrapped `Layer`.
-    pub fn handle(&self) -> Handle<L, S> {
-        Handle {
-            inner: Arc::downgrade(&self.inner),
-            _s: PhantomData,
-        }
-    }
-}
-
-// ===== impl Handle =====
-
-impl<L, S> Handle<L, S>
-where
-    L: crate::Layer<S> + 'static,
-    S: Subscriber,
-{
-    /// Replace the current layer with the provided `new_layer`.
-    pub fn reload(&self, new_layer: impl Into<L>) -> Result<(), Error> {
-        self.modify(|layer| {
-            *layer = new_layer.into();
-        })
-    }
-
-    /// Invokes a closure with a mutable reference to the current layer,
-    /// allowing it to be modified in place.
-    pub fn modify(&self, f: impl FnOnce(&mut L)) -> Result<(), Error> {
-        let inner = self.inner.upgrade().ok_or(Error {
-            kind: ErrorKind::SubscriberGone,
-        })?;
-
-        let mut lock = try_lock!(inner.write(), else return Err(Error::poisoned()));
-        f(&mut *lock);
-        // Release the lock before rebuilding the interest cache, as that
-        // function will lock the new layer.
-        drop(lock);
-
-        callsite::rebuild_interest_cache();
-        Ok(())
-    }
-
-    /// Returns a clone of the layer's current value if it still exists.
-    /// Otherwise, if the subscriber has been dropped, returns `None`.
-    pub fn clone_current(&self) -> Option<L>
-    where
-        L: Clone,
-    {
-        self.with_current(L::clone).ok()
-    }
-
-    /// Invokes a closure with a borrowed reference to the current layer,
-    /// returning the result (or an error if the subscriber no longer exists).
-    pub fn with_current<T>(&self, f: impl FnOnce(&L) -> T) -> Result<T, Error> {
-        let inner = self.inner.upgrade().ok_or(Error {
-            kind: ErrorKind::SubscriberGone,
-        })?;
-        let inner = try_lock!(inner.read(), else return Err(Error::poisoned()));
-        Ok(f(&*inner))
-    }
-}
-
-impl<L, S> Clone for Handle<L, S> {
-    fn clone(&self) -> Self {
-        Handle {
-            inner: self.inner.clone(),
-            _s: PhantomData,
-        }
-    }
-}
-
-// ===== impl Error =====
-
-impl Error {
-    fn poisoned() -> Self {
-        Self {
-            kind: ErrorKind::Poisoned,
-        }
-    }
-
-    /// Returns `true` if this error occurred because the layer was poisoned by
-    /// a panic on another thread.
-    pub fn is_poisoned(&self) -> bool {
-        matches!(self.kind, ErrorKind::Poisoned)
-    }
-
-    /// Returns `true` if this error occurred because the `Subscriber`
-    /// containing the reloadable layer was dropped.
-    pub fn is_dropped(&self) -> bool {
-        matches!(self.kind, ErrorKind::SubscriberGone)
-    }
-}
-
-impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let msg = match self.kind {
-            ErrorKind::SubscriberGone => "subscriber no longer exists",
-            ErrorKind::Poisoned => "lock poisoned",
-        };
-        f.pad(msg)
-    }
-}
-
-impl error::Error for Error {}