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tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | /// ```
/// use std::sync::Arc;
/// use tokio::sync::Semaphore;
///
/// #[tokio::main]
/// async fn main() {
/// let semaphore = Arc::new(Semaphore::new(3));
/// let mut join_handles = Vec::new();
///
/// for _ in 0..5 {
/// let permit = semaphore.clone().acqu... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | Ok(OwnedSemaphorePermit {
sem: self,
permits: 1,
})
}
/// Acquires `n` permits from the semaphore.
///
/// The semaphore must be wrapped in an [`Arc`] to call this method.
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | /// handle.await.unwrap();
/// }
/// }
/// ```
///
/// [`Arc`]: std::sync::Arc
/// [`AcquireError`]: crate::sync::AcquireError
/// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub async fn acquire_many_owned(
self: Arc<Self>,
n: u32,
) -> Re... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:23 | /// ```
/// use tokio::sync::Semaphore;
/// use std::sync::Arc;
/// use tokio::sync::TryAcquireError;
///
/// #[tokio::main]
/// async fn main() {
/// let semaphore = Arc::new(Semaphore::new(1));
/// let semaphore2 = semaphore.clone();
///
/// tokio::spawn(async move ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 881 | 940 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:24 | /// Merge two [`SemaphorePermit`] instances together, consuming `other`
/// without releasing the permits it holds.
///
/// Permits held by both `self` and `other` are released when `self` drops.
///
/// # Panics
///
/// This function panics if permits from different [`Semaphore`] instances
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 921 | 980 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:25 | assert!(
Arc::ptr_eq(&self.sem, &other.sem),
"merging permits from different semaphore instances"
);
self.permits += other.permits;
other.permits = 0;
}
/// Returns the [`Semaphore`] from which this permit was acquired.
pub fn semaphore(&self) -> &Arc<Semapho... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 0fbde0e94b06536917b6686e996856a33aeb29ee | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0fbde0e94b06536917b6686e996856a33aeb29ee/tokio/src/sync/semaphore.rs | 961 | 985 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:12 | ///
/// [`tokio-console`]: https://github.com/tokio-rs/console
/// [unstable feature]: crate#unstable-features
#[cfg(not(all(loom, test)))]
pub const fn const_new(permits: usize) -> Self {
Self {
ll_sem: ll::Semaphore::const_new(permits),
#[cfg(all(tokio_unstable, feature... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 441 | 500 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:13 | self.ll_sem.release(n);
}
/// Acquires a permit from the semaphore.
///
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`SemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method use... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 481 | 540 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | || self.ll_sem.acquire(1),
self.resource_span.clone(),
"Semaphore::acquire",
"poll",
true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
let inner = self.ll_sem.acquire(1);
inner.await?;
Ok(SemaphorePermit {
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | /// ```
///
/// [`AcquireError`]: crate::sync::AcquireError
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub async fn acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
trace::async_op(
|| self.... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | ///
/// let permit_2 = semaphore.try_acquire().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`TryAcquireError::Closed`]: crate::syn... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | ///
/// for _ in 0..5 {
/// let permit = semaphore.clone().acquire_owned().await.unwrap();
/// join_handles.push(tokio::spawn(async move {
/// // perform task...
/// // explicitly own `permit` in the task
/// drop(permit);
/// }... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | /// The semaphore must be wrapped in an [`Arc`] to call this method.
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`OwnedSemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method uses a queue t... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | pub async fn acquire_many_owned(
self: Arc<Self>,
n: u32,
) -> Result<OwnedSemaphorePermit, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
let inner = trace::async_op(
|| self.ll_sem.acquire(n as usize),
self.resource_span.clone(),
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | /// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = Arc::clone(&semaphore).try_acquire_owned().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire_owned();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 801 | 860 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | ///
/// let permit_1 = Arc::clone(&semaphore).try_acquire_many_owned(3).unwrap();
/// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = semaphore.try_acquire_many_owned(2);
/// assert_eq!(permit_2.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 841 | 900 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:23 | /// let semaphore2 = semaphore.clone();
///
/// tokio::spawn(async move {
/// let permit = semaphore.acquire_many(2).await;
/// assert!(permit.is_err());
/// println!("waiter received error");
/// });
///
/// println!("closing semaphore");
/// ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 881 | 940 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:24 | /// This function panics if permits from different [`Semaphore`] instances
/// are merged.
#[track_caller]
pub fn merge(&mut self, mut other: Self) {
assert!(
std::ptr::eq(self.sem, other.sem),
"merging permits from different semaphore instances"
);
self.permi... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 921 | 977 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:25 | /// Returns the [`Semaphore`] from which this permit was acquired.
pub fn semaphore(&self) -> &Arc<Semaphore> {
&self.sem
}
}
impl Drop for SemaphorePermit<'_> {
fn drop(&mut self) {
self.sem.add_permits(self.permits as usize);
}
}
impl Drop for OwnedSemaphorePermit {
fn drop(&mut ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7c606ab44aa9f0c33dfcf5bc8678411dddeaa9e5/tokio/src/sync/semaphore.rs | 961 | 977 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | || self.ll_sem.acquire(1),
self.resource_span.clone(),
"Semaphore::acquire",
"poll",
true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
let inner = self.ll_sem.acquire(1);
inner.await?;
Ok(SemaphorePermit {
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | /// ```
///
/// [`AcquireError`]: crate::sync::AcquireError
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub async fn acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
trace::async_op(
|| self.... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | ///
/// let permit_2 = semaphore.try_acquire().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`TryAcquireError::Closed`]: crate::syn... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | /// The semaphore must be wrapped in an [`Arc`] to call this method.
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`OwnedSemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method uses a queue t... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | pub async fn acquire_many_owned(
self: Arc<Self>,
n: u32,
) -> Result<OwnedSemaphorePermit, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
let inner = trace::async_op(
|| self.ll_sem.acquire(n),
self.resource_span.clone(),
"Semaph... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | /// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = Arc::clone(&semaphore).try_acquire_owned().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire_owned();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 801 | 860 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | ///
/// let permit_1 = Arc::clone(&semaphore).try_acquire_many_owned(3).unwrap();
/// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = semaphore.try_acquire_many_owned(2);
/// assert_eq!(permit_2.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 7b555185ff9186f618b198126ee853980b187698 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/7b555185ff9186f618b198126ee853980b187698/tokio/src/sync/semaphore.rs | 841 | 900 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:10 | /// This type is created by the [`acquire_owned`] method.
///
/// [`acquire_owned`]: crate::sync::Semaphore::acquire_owned()
#[must_use]
#[clippy::has_significant_drop]
#[derive(Debug)]
pub struct OwnedSemaphorePermit {
sem: Arc<Semaphore>,
permits: u32,
}
#[test]
#[cfg(not(loom))]
fn bounds() {
fn check_u... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 361 | 420 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:11 | tracing::trace_span!(
"runtime.resource",
concrete_type = "Semaphore",
kind = "Sync",
loc.file = location.file(),
loc.line = location.line(),
loc.col = location.column(),
inherits_child_attrs = true,
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 401 | 460 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:12 | /// [`tokio-console`]: https://github.com/tokio-rs/console
/// [unstable feature]: crate#unstable-features
#[cfg(not(all(loom, test)))]
pub const fn const_new(permits: usize) -> Self {
Self {
ll_sem: ll::Semaphore::const_new(permits),
#[cfg(all(tokio_unstable, feature = "trac... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 441 | 500 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:13 | }
/// Acquires a permit from the semaphore.
///
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`SemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method uses a queue to fairly distribu... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 481 | 540 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | self.resource_span.clone(),
"Semaphore::acquire",
"poll",
true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
let inner = self.ll_sem.acquire(1);
inner.await?;
Ok(SemaphorePermit {
sem: self,
permits: 1,
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | ///
/// [`AcquireError`]: crate::sync::AcquireError
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub async fn acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
trace::async_op(
|| self.ll_sem.acqui... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | /// let permit_2 = semaphore.try_acquire().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`TryAcquireError::Closed`]: crate::sync::TryAc... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | /// for _ in 0..5 {
/// let permit = semaphore.clone().acquire_owned().await.unwrap();
/// join_handles.push(tokio::spawn(async move {
/// // perform task...
/// // explicitly own `permit` in the task
/// drop(permit);
/// }));
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | /// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`OwnedSemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method uses a queue to fairly distribute permits in the order they
/// were requested. Can... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | self: Arc<Self>,
n: u32,
) -> Result<OwnedSemaphorePermit, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
let inner = trace::async_op(
|| self.ll_sem.acquire(n),
self.resource_span.clone(),
"Semaphore::acquire_many_owned",
"po... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | ///
/// let permit_2 = Arc::clone(&semaphore).try_acquire_owned().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire_owned();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: std::... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 801 | 860 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | /// let permit_1 = Arc::clone(&semaphore).try_acquire_many_owned(3).unwrap();
/// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = semaphore.try_acquire_many_owned(2);
/// assert_eq!(permit_2.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: s... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 841 | 900 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:23 | ///
/// tokio::spawn(async move {
/// let permit = semaphore.acquire_many(2).await;
/// assert!(permit.is_err());
/// println!("waiter received error");
/// });
///
/// println!("closing semaphore");
/// semaphore2.close();
///
/// // C... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 881 | 940 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:24 | /// are merged.
#[track_caller]
pub fn merge(&mut self, mut other: Self) {
assert!(
std::ptr::eq(self.sem, other.sem),
"merging permits from different semaphore instances"
);
self.permits += other.permits;
other.permits = 0;
}
}
impl OwnedSemaphorePer... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 921 | 976 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:25 | pub fn semaphore(&self) -> &Arc<Semaphore> {
&self.sem
}
}
impl Drop for SemaphorePermit<'_> {
fn drop(&mut self) {
self.sem.add_permits(self.permits as usize);
}
}
impl Drop for OwnedSemaphorePermit {
fn drop(&mut self) {
self.sem.add_permits(self.permits as usize);
}
} | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 6871084629ad95c37c7136d865890ab2e371ea12 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/6871084629ad95c37c7136d865890ab2e371ea12/tokio/src/sync/semaphore.rs | 961 | 976 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | ///
/// [`AcquireError`]: crate::sync::AcquireError
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub async fn acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
trace::async_op(
|| self.ll_sem.acqui... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | d6ed00c292472d2aa75abd90321f0155141e06ad | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6ed00c292472d2aa75abd90321f0155141e06ad/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | /// let permit_2 = semaphore.try_acquire().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`TryAcquireError::Closed`]: crate::sync::TryAc... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | d6ed00c292472d2aa75abd90321f0155141e06ad | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6ed00c292472d2aa75abd90321f0155141e06ad/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | self: Arc<Self>,
n: u32,
) -> Result<OwnedSemaphorePermit, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
let inner = trace::async_op(
|| self.ll_sem.acquire(n),
self.resource_span.clone(),
"Semaphore::acquire_many_owned",
"po... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | d6ed00c292472d2aa75abd90321f0155141e06ad | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6ed00c292472d2aa75abd90321f0155141e06ad/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | ///
/// let permit_2 = Arc::clone(&semaphore).try_acquire_owned().unwrap();
/// assert_eq!(semaphore.available_permits(), 0);
///
/// let permit_3 = semaphore.try_acquire_owned();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: std::... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | d6ed00c292472d2aa75abd90321f0155141e06ad | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6ed00c292472d2aa75abd90321f0155141e06ad/tokio/src/sync/semaphore.rs | 801 | 860 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | /// let permit_1 = Arc::clone(&semaphore).try_acquire_many_owned(3).unwrap();
/// assert_eq!(semaphore.available_permits(), 1);
///
/// let permit_2 = semaphore.try_acquire_many_owned(2);
/// assert_eq!(permit_2.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: s... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | d6ed00c292472d2aa75abd90321f0155141e06ad | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6ed00c292472d2aa75abd90321f0155141e06ad/tokio/src/sync/semaphore.rs | 841 | 900 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:9 | /// }
/// ```
///
/// [`PollSemaphore`]: https://docs.rs/tokio-util/latest/tokio_util/sync/struct.PollSemaphore.html
/// [`Semaphore::acquire_owned`]: crate::sync::Semaphore::acquire_owned
#[derive(Debug)]
pub struct Semaphore {
/// The low level semaphore
ll_sem: ll::Semaphore,
#[cfg(all(tokio_unstable, fe... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 321 | 380 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:10 | #[cfg(not(loom))]
fn bounds() {
fn check_unpin<T: Unpin>() {}
// This has to take a value, since the async fn's return type is unnameable.
fn check_send_sync_val<T: Send + Sync>(_t: T) {}
fn check_send_sync<T: Send + Sync>() {}
check_unpin::<Semaphore>();
check_unpin::<SemaphorePermit<'_>>();
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 361 | 420 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:11 | #[cfg(all(tokio_unstable, feature = "tracing"))]
let ll_sem = resource_span.in_scope(|| ll::Semaphore::new(permits));
#[cfg(any(not(tokio_unstable), not(feature = "tracing")))]
let ll_sem = ll::Semaphore::new(permits);
Self {
ll_sem,
#[cfg(all(tokio_unstable, fe... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 401 | 460 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:12 | pub(crate) fn new_closed() -> Self {
Self {
ll_sem: ll::Semaphore::new_closed(),
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: tracing::Span::none(),
}
}
/// Creates a new closed semaphore with 0 permits.
#[cfg(not(all(loom, test)))]
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 441 | 500 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:13 | /// in the queue.
///
/// # Examples
///
/// ```
/// use tokio::sync::Semaphore;
///
/// #[tokio::main]
/// async fn main() {
/// let semaphore = Semaphore::new(2);
///
/// let permit_1 = semaphore.acquire().await.unwrap();
/// assert_eq!(semaphore.available_p... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 481 | 540 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | })
}
/// Acquires `n` permits from the semaphore.
///
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`SemaphorePermit`] representing the
/// acquired permits.
///
/// # Cancel safety
///
/// This method uses a queue to fair... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | .await?;
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
self.ll_sem.acquire(n).await?;
Ok(SemaphorePermit {
sem: self,
permits: n,
})
}
/// Tries to acquire a permit from the semaphore.
///
/// If the semaphore has been closed, this retur... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | match self.ll_sem.try_acquire(1) {
Ok(_) => Ok(SemaphorePermit {
sem: self,
permits: 1,
}),
Err(e) => Err(e),
}
}
/// Tries to acquire `n` permits from the semaphore.
///
/// If the semaphore has been closed, this returns a [`T... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:17 | Err(e) => Err(e),
}
}
/// Acquires a permit from the semaphore.
///
/// The semaphore must be wrapped in an [`Arc`] to call this method.
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`OwnedSemaphorePermit`] representing the
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 641 | 700 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | /// }
/// ```
///
/// [`Arc`]: std::sync::Arc
/// [`AcquireError`]: crate::sync::AcquireError
/// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub async fn acquire_owned(self: Arc<Self>) -> Result<OwnedSemaphorePermit, AcquireError> {
#[cfg(all(tokio_unstable, feature = "t... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | /// ```
/// use std::sync::Arc;
/// use tokio::sync::Semaphore;
///
/// #[tokio::main]
/// async fn main() {
/// let semaphore = Arc::new(Semaphore::new(10));
/// let mut join_handles = Vec::new();
///
/// for _ in 0..5 {
/// let permit = semaphore.clone().acq... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | let inner = self.ll_sem.acquire(n);
inner.await?;
Ok(OwnedSemaphorePermit {
sem: self,
permits: n,
})
}
/// Tries to acquire a permit from the semaphore.
///
/// The semaphore must be wrapped in an [`Arc`] to call this method. If
/// the semaphore ha... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | /// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub fn try_acquire_owned(self: Arc<Self>) -> Result<OwnedSemaphorePermit, TryAcquireError> {
match self.ll_sem.try_acquire(1) {
Ok(_) => Ok(OwnedSemaphorePermit {
sem: self,
permits: 1,
})... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 801 | 860 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | pub fn try_acquire_many_owned(
self: Arc<Self>,
n: u32,
) -> Result<OwnedSemaphorePermit, TryAcquireError> {
match self.ll_sem.try_acquire(n) {
Ok(_) => Ok(OwnedSemaphorePermit {
sem: self,
permits: n,
}),
Err(e) => Err(e),
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 841 | 900 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:23 | /// }
/// ```
pub fn close(&self) {
self.ll_sem.close();
}
/// Returns true if the semaphore is closed
pub fn is_closed(&self) -> bool {
self.ll_sem.is_closed()
}
}
impl<'a> SemaphorePermit<'a> {
/// Forgets the permit **without** releasing it back to the semaphore.
///... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 881 | 940 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:24 | impl OwnedSemaphorePermit {
/// Forgets the permit **without** releasing it back to the semaphore.
/// This can be used to reduce the amount of permits available from a
/// semaphore.
pub fn forget(mut self) {
self.permits = 0;
}
/// Merge two [`OwnedSemaphorePermit`] instances together... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 5d29136a8348ca13262295cc5bd7eb96d647ba65 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/5d29136a8348ca13262295cc5bd7eb96d647ba65/tokio/src/sync/semaphore.rs | 921 | 964 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:6 | /// let capacity = 5;
/// let update_interval = Duration::from_secs_f32(1.0 / capacity as f32);
/// let bucket = TokenBucket::new(update_interval, capacity);
///
/// for _ in 0..5 {
/// bucket.acquire().await;
///
/// // do the operation
/// }
/// }
/// ```
///
/// [`PollSemaphore`]:... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:7 | #[must_use]
#[clippy::has_significant_drop]
#[derive(Debug)]
pub struct OwnedSemaphorePermit {
sem: Arc<Semaphore>,
permits: u32,
}
#[test]
#[cfg(not(loom))]
fn bounds() {
fn check_unpin<T: Unpin>() {}
// This has to take a value, since the async fn's return type is unnameable.
fn check_send_sync_v... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 241 | 300 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:8 | concrete_type = "Semaphore",
kind = "Sync",
loc.file = location.file(),
loc.line = location.line(),
loc.col = location.column(),
inherits_child_attrs = true,
)
};
#[cfg(all(tokio_unstable, feature = "tracing"))]... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 281 | 340 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:9 | pub const fn const_new(permits: usize) -> Self {
Self {
ll_sem: ll::Semaphore::const_new(permits),
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: tracing::Span::none(),
}
}
/// Creates a new closed semaphore with 0 permits.
pub(crate) fn ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 321 | 380 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:10 | ///
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`SemaphorePermit`] representing the
/// acquired permit.
///
/// # Cancel safety
///
/// This method uses a queue to fairly distribute permits in the order they
/// were requested. ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 361 | 420 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:11 | true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
let inner = self.ll_sem.acquire(1);
inner.await?;
Ok(SemaphorePermit {
sem: self,
permits: 1,
})
}
/// Acquires `n` permits from the semaphore.
///
/// If the semaphor... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 401 | 460 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:12 | pub async fn acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, AcquireError> {
#[cfg(all(tokio_unstable, feature = "tracing"))]
trace::async_op(
|| self.ll_sem.acquire(n),
self.resource_span.clone(),
"Semaphore::acquire_many",
"poll",
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 441 | 500 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:13 | /// let permit_3 = semaphore.try_acquire();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::TryAcquireError::NoPermits
/// [`SemaphoreP... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 481 | 540 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | /// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::TryAcquireError::NoPermits
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub fn try_acquire_many(&self, n: u32) -> Result<SemaphorePermit<'_>, TryAcquireError> {
match self.... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | /// // perform task...
/// // explicitly own `permit` in the task
/// drop(permit);
/// }));
/// }
///
/// for handle in join_handles {
/// handle.await.unwrap();
/// }
/// }
/// ```
///
/// [`Arc`]: std::syn... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | ///
/// # Cancel safety
///
/// This method uses a queue to fairly distribute permits in the order they
/// were requested. Cancelling a call to `acquire_many_owned` makes you lose
/// your place in the queue.
///
/// # Examples
///
/// ```
/// use std::sync::Arc;
/// use tok... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:17 | #[cfg(all(tokio_unstable, feature = "tracing"))]
let inner = trace::async_op(
|| self.ll_sem.acquire(n),
self.resource_span.clone(),
"Semaphore::acquire_many_owned",
"poll",
true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 641 | 700 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | ///
/// let permit_3 = semaphore.try_acquire_owned();
/// assert_eq!(permit_3.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: std::sync::Arc
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::T... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | /// let permit_2 = semaphore.try_acquire_many_owned(2);
/// assert_eq!(permit_2.err(), Some(TryAcquireError::NoPermits));
/// # }
/// ```
///
/// [`Arc`]: std::sync::Arc
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::Try... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | /// assert!(permit.is_err());
/// println!("waiter received error");
/// });
///
/// println!("closing semaphore");
/// semaphore2.close();
///
/// // Cannot obtain more permits
/// assert_eq!(semaphore2.try_acquire().err(), Some(TryAcquireError::Close... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | assert!(
std::ptr::eq(self.sem, other.sem),
"merging permits from different semaphore instances"
);
self.permits += other.permits;
other.permits = 0;
}
}
impl OwnedSemaphorePermit {
/// Forgets the permit **without** releasing it back to the semaphore.
/// Th... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 801 | 853 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:22 | }
impl Drop for SemaphorePermit<'_> {
fn drop(&mut self) {
self.sem.add_permits(self.permits as usize);
}
}
impl Drop for OwnedSemaphorePermit {
fn drop(&mut self) {
self.sem.add_permits(self.permits as usize);
}
} | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | 02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/02aacf5110f8b9091489b1c0b6c254f7b8a9a6a4/tokio/src/sync/semaphore.rs | 841 | 853 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:6 | ///
/// // do the operation
/// }
///
/// bucket.close().await;
/// }
/// ```
///
/// [`PollSemaphore`]: https://docs.rs/tokio-util/latest/tokio_util/sync/struct.PollSemaphore.html
/// [`Semaphore::acquire_owned`]: crate::sync::Semaphore::acquire_owned
#[derive(Debug)]
pub struct Semaphore {
/// The... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:7 | sem: Arc<Semaphore>,
permits: u32,
}
#[test]
#[cfg(not(loom))]
fn bounds() {
fn check_unpin<T: Unpin>() {}
// This has to take a value, since the async fn's return type is unnameable.
fn check_send_sync_val<T: Send + Sync>(_t: T) {}
fn check_send_sync<T: Send + Sync>() {}
check_unpin::<Semaphor... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 241 | 300 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:8 | loc.col = location.column(),
inherits_child_attrs = true,
)
};
#[cfg(all(tokio_unstable, feature = "tracing"))]
let ll_sem = resource_span.in_scope(|| ll::Semaphore::new(permits));
#[cfg(any(not(tokio_unstable), not(feature = "tracing")))]
let ll_sem... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 281 | 340 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:9 | resource_span: tracing::Span::none(),
}
}
/// Creates a new closed semaphore with 0 permits.
pub(crate) fn new_closed() -> Self {
Self {
ll_sem: ll::Semaphore::new_closed(),
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: tracing::Span::no... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 321 | 380 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:10 | ///
/// # Cancel safety
///
/// This method uses a queue to fairly distribute permits in the order they
/// were requested. Cancelling a call to `acquire` makes you lose your place
/// in the queue.
///
/// # Examples
///
/// ```
/// use tokio::sync::Semaphore;
///
/// #[... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 361 | 420 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:11 | inner.await?;
Ok(SemaphorePermit {
sem: self,
permits: 1,
})
}
/// Acquires `n` permits from the semaphore.
///
/// If the semaphore has been closed, this returns an [`AcquireError`].
/// Otherwise, this returns a [`SemaphorePermit`] representing the
/// ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 401 | 460 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:12 | self.resource_span.clone(),
"Semaphore::acquire_many",
"poll",
true,
)
.await?;
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
self.ll_sem.acquire(n).await?;
Ok(SemaphorePermit {
sem: self,
permits: n,
}... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 441 | 500 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:13 | ///
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::TryAcquireError::NoPermits
/// [`SemaphorePermit`]: crate::sync::SemaphorePermit
pub fn try_acquire(&self) -> Result<SemaphorePermit<'_>, TryAcquireError> {
match self.ll_se... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 481 | 540 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:14 | match self.ll_sem.try_acquire(n) {
Ok(_) => Ok(SemaphorePermit {
sem: self,
permits: n,
}),
Err(e) => Err(e),
}
}
/// Acquires a permit from the semaphore.
///
/// The semaphore must be wrapped in an [`Arc`] to call this method... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 521 | 580 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:15 | /// }
///
/// for handle in join_handles {
/// handle.await.unwrap();
/// }
/// }
/// ```
///
/// [`Arc`]: std::sync::Arc
/// [`AcquireError`]: crate::sync::AcquireError
/// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub async fn acquire_o... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 561 | 620 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:16 | /// were requested. Cancelling a call to `acquire_many_owned` makes you lose
/// your place in the queue.
///
/// # Examples
///
/// ```
/// use std::sync::Arc;
/// use tokio::sync::Semaphore;
///
/// #[tokio::main]
/// async fn main() {
/// let semaphore = Arc::new(Semap... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 601 | 660 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:17 | "Semaphore::acquire_many_owned",
"poll",
true,
);
#[cfg(not(all(tokio_unstable, feature = "tracing")))]
let inner = self.ll_sem.acquire(n);
inner.await?;
Ok(OwnedSemaphorePermit {
sem: self,
permits: n,
})
}
/// Tr... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 641 | 700 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:18 | /// ```
///
/// [`Arc`]: std::sync::Arc
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::TryAcquireError::NoPermits
/// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub fn try_acquire_owned(self: Arc<Self>) -> R... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 681 | 740 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:19 | ///
/// [`Arc`]: std::sync::Arc
/// [`TryAcquireError::Closed`]: crate::sync::TryAcquireError::Closed
/// [`TryAcquireError::NoPermits`]: crate::sync::TryAcquireError::NoPermits
/// [`OwnedSemaphorePermit`]: crate::sync::OwnedSemaphorePermit
pub fn try_acquire_many_owned(
self: Arc<Self>,
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 721 | 780 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:20 | /// println!("closing semaphore");
/// semaphore2.close();
///
/// // Cannot obtain more permits
/// assert_eq!(semaphore2.try_acquire().err(), Some(TryAcquireError::Closed))
/// }
/// ```
pub fn close(&self) {
self.ll_sem.close();
}
/// Returns true if the s... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 761 | 820 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:21 | self.permits += other.permits;
other.permits = 0;
}
}
impl OwnedSemaphorePermit {
/// Forgets the permit **without** releasing it back to the semaphore.
/// This can be used to reduce the amount of permits available from a
/// semaphore.
pub fn forget(mut self) {
self.permits = 0;
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | b161633b5f8aac105c0da5cc7a1008495794c528 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/b161633b5f8aac105c0da5cc7a1008495794c528/tokio/src/sync/semaphore.rs | 801 | 849 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:6 | /// });
/// }
/// }
/// # async fn handle_connection(_socket: &mut tokio::net::TcpStream) {
/// # // Do work
/// # }
/// ```
///
/// [`PollSemaphore`]: https://docs.rs/tokio-util/latest/tokio_util/sync/struct.PollSemaphore.html
/// [`Semaphore::acquire_owned`]: crate::sync::Semaphore::acquire_owned
#[deri... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | f5b8cf9dac1e153595036eb36ee214e5b6afb183 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/f5b8cf9dac1e153595036eb36ee214e5b6afb183/tokio/src/sync/semaphore.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:4 | /// # async fn handle_connection(_socket: &mut tokio::net::TcpStream) {
/// # // Do work
/// # }
/// ```
///
/// [`PollSemaphore`]: https://docs.rs/tokio-util/latest/tokio_util/sync/struct.PollSemaphore.html
/// [`Semaphore::acquire_owned`]: crate::sync::Semaphore::acquire_owned
#[derive(Debug)]
pub struct Semaphore ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | e6553c4ee3c5914cba885a6498451fcd0de3e506 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e6553c4ee3c5914cba885a6498451fcd0de3e506/tokio/src/sync/semaphore.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:5 | #[test]
#[cfg(not(loom))]
fn bounds() {
fn check_unpin<T: Unpin>() {}
// This has to take a value, since the async fn's return type is unnameable.
fn check_send_sync_val<T: Send + Sync>(_t: T) {}
fn check_send_sync<T: Send + Sync>() {}
check_unpin::<Semaphore>();
check_unpin::<SemaphorePermit<'_... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | e6553c4ee3c5914cba885a6498451fcd0de3e506 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e6553c4ee3c5914cba885a6498451fcd0de3e506/tokio/src/sync/semaphore.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:6 | };
#[cfg(all(tokio_unstable, feature = "tracing"))]
let ll_sem = resource_span.in_scope(|| ll::Semaphore::new(permits));
#[cfg(any(not(tokio_unstable), not(feature = "tracing")))]
let ll_sem = ll::Semaphore::new(permits);
Self {
ll_sem,
#[cfg(all(tokio_... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | e6553c4ee3c5914cba885a6498451fcd0de3e506 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e6553c4ee3c5914cba885a6498451fcd0de3e506/tokio/src/sync/semaphore.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/semaphore.rs:7 | /// Creates a new closed semaphore with 0 permits.
pub(crate) fn new_closed() -> Self {
Self {
ll_sem: ll::Semaphore::new_closed(),
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: tracing::Span::none(),
}
}
/// Creates a new closed semapho... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/semaphore.rs | MIT | e6553c4ee3c5914cba885a6498451fcd0de3e506 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e6553c4ee3c5914cba885a6498451fcd0de3e506/tokio/src/sync/semaphore.rs | 241 | 300 |
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