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#![allow(missing_docs)]
use std::future::Future;
use std::sync::Arc;
use dashmap::DashMap;
use parking_lot::Mutex;
use tokio::task::JoinHandle;
pub type TaskHandle = JoinHandle<()>;
pub type BoxFuture<Output> = std::pin::Pin<Box<dyn Future<Output = Output> + Send + Sync + 'static>>;
pub fn spawn<F>(task: F) -> TaskHandle
where
F: Future<Output = ()> + ConditionallySafe + 'static,
{
tokio::spawn(task)
}
pub fn exhaust_pool() {
unimplemented!("Not implemented in non-wasm hosts")
}
#[allow(missing_debug_implementations)]
pub struct SafeMap<K, V>(DashMap<K, V>)
where
K: std::hash::Hash,
K: Eq;
impl<K, V> SafeMap<K, V>
where
K: std::hash::Hash,
K: Eq,
{
pub fn remove(&self, key: &K) -> Option<V> {
self.0.remove(key).map(|v| v.1)
}
pub fn insert(&self, key: K, value: V) {
self.0.insert(key, value);
}
#[must_use]
pub fn len(&self) -> usize {
self.0.len()
}
#[must_use]
pub fn is_empty(&self) -> bool {
self.0.is_empty()
}
pub fn cloned(&self, key: &K) -> Option<V>
where
V: Clone,
{
self.0.get(key).map(|v| v.clone())
}
pub fn entry(&self, key: K) -> Entry<'_, K, V> {
match self.0.entry(key) {
dashmap::mapref::entry::Entry::Occupied(v) => Entry::Occupied::<K, V>(OccupiedEntry(v)),
dashmap::mapref::entry::Entry::Vacant(v) => Entry::Vacant::<K, V>(VacantEntry(v)),
}
}
}
#[must_use]
#[allow(missing_debug_implementations)]
pub enum Entry<'a, K, V> {
Occupied(OccupiedEntry<'a, K, V>),
Vacant(VacantEntry<'a, K, V>),
}
#[allow(missing_debug_implementations)]
pub struct OccupiedEntry<'a, K, V>(dashmap::mapref::entry::OccupiedEntry<'a, K, V>);
impl<'a, K, V> OccupiedEntry<'a, K, V>
where
K: Eq,
K: std::hash::Hash,
{
pub fn get(&self) -> &V {
self.0.get()
}
pub fn remove(self) -> V {
self.0.remove()
}
}
#[allow(missing_debug_implementations)]
pub struct VacantEntry<'a, K, V>(dashmap::mapref::entry::VacantEntry<'a, K, V>);
impl<K, V> Default for SafeMap<K, V>
where
K: std::hash::Hash,
K: Eq,
{
fn default() -> Self {
Self(Default::default())
}
}
#[allow(missing_debug_implementations)]
pub struct OptionalMut<T>(Arc<Mutex<Option<T>>>);
impl<T> OptionalMut<T>
where
T: Send,
{
pub fn new(item: T) -> Self {
Self(Arc::new(Mutex::new(Some(item))))
}
#[must_use]
pub fn none() -> Self {
Self(Arc::new(Mutex::new(None)))
}
#[must_use]
pub fn take(&self) -> Option<T> {
self.0.lock().take()
}
pub fn insert(&self, item: T) {
let _ = self.0.lock().insert(item);
}
}
impl<T> Clone for OptionalMut<T> {
fn clone(&self) -> Self {
Self(self.0.clone())
}
}
#[allow(missing_debug_implementations)]
pub struct MutRc<T>(pub(super) Arc<Mutex<T>>);
impl<T> MutRc<T>
where
T: ConditionallySafe,
{
pub fn new(item: T) -> Self {
Self(Arc::new(Mutex::new(item)))
}
pub fn lock(&self) -> parking_lot::lock_api::MutexGuard<'_, parking_lot::RawMutex, T> {
self.0.lock()
}
}
impl<T> PartialEq for MutRc<T>
where
T: PartialEq,
{
fn eq(&self, other: &Self) -> bool {
self.0.lock().eq(&other.0.lock())
}
}
pub type RtRc<T> = Arc<T>;
pub trait ConditionallySafe: Send + Sync + 'static {}
impl<S> ConditionallySafe for S where S: Send + Sync + 'static {}