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value | syntax stringclasses 1
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values | repo stringclasses 27
values | path stringlengths 5 116 | license stringclasses 6
values | commit stringlengths 40 40 | source_host stringclasses 1
value | category stringclasses 16
values | source_url stringlengths 85 196 | line_start int64 1 4.28k | line_end int64 4 4.31k |
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tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:5 | ///
/// **Note:** This won't *necessarily* allow any additional readers to acquire
/// locks, since [`RwLock`] is fair and it is possible that a writer is next
/// in line.
///
/// Returns an RAII guard which will drop this read access of the `RwLock`
/// when dropped.
///
/// # Examples... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:6 | #[cfg(all(tokio_unstable, feature = "tracing"))]
self.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_update",
write_locked = false,
write_locked.op = "override",
)
});
#[cfg(all(tokio_unstable, feature =... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:7 | impl<T: ?Sized> ops::DerefMut for OwnedRwLockWriteGuard<T> {
fn deref_mut(&mut self) -> &mut T {
unsafe { &mut *self.data }
}
}
impl<T: ?Sized> fmt::Debug for OwnedRwLockWriteGuard<T>
where
T: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**se... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard.rs | 241 | 279 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:1 | use crate::sync::rwlock::owned_read_guard::OwnedRwLockReadGuard;
use crate::sync::rwlock::owned_write_guard_mapped::OwnedRwLockMappedWriteGuard;
use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure us... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:2 | /// use tokio::sync::{RwLock, OwnedRwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let lock = Arc::clone(&lock);
/// ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:3 | /// This operation cannot fail as the `OwnedRwLockWriteGuard` passed in
/// already locked the data.
///
/// This is an associated function that needs to be
/// used as `OwnedRwLockWriteGuard::try_map(...)`. A method would interfere
/// with methods of the same name on the contents of the locked dat... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:4 | Some(data) => data as *mut U,
None => return Err(this),
};
let permits_acquired = this.permits_acquired;
let lock = unsafe { ManuallyDrop::take(&mut this.lock) };
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(OwnedRwLockMappedWriteG... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:5 | /// #
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(1));
///
/// let n = lock.clone().write_owned().await;
///
/// let cloned_lock = lock.clone();
/// let handle = tokio::spawn(async move {
/// *cloned_lock.write_owned().await = 2;
/// });
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:6 | unsafe { &*self.data }
}
}
impl<T: ?Sized> ops::DerefMut for OwnedRwLockWriteGuard<T> {
fn deref_mut(&mut self) -> &mut T {
unsafe { &mut *self.data }
}
}
impl<T: ?Sized> fmt::Debug for OwnedRwLockWriteGuard<T>
where
T: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard.rs | 201 | 234 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:1 | use crate::sync::rwlock::owned_read_guard::OwnedRwLockReadGuard;
use crate::sync::rwlock::owned_write_guard_mapped::OwnedRwLockMappedWriteGuard;
use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure us... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | e89c8981f151a667bb676213d38b7dbeb51620e9 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e89c8981f151a667bb676213d38b7dbeb51620e9/tokio/src/sync/rwlock/owned_write_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:1 | use crate::sync::rwlock::owned_read_guard::OwnedRwLockReadGuard;
use crate::sync::rwlock::owned_write_guard_mapped::OwnedRwLockMappedWriteGuard;
use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure us... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:2 | ///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let lock = Arc::clone(&lock);
/// let mut mapped = OwnedRwLockWriteGuard::map(lock.write_... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:3 | /// This is an associated function that needs to be
/// used as `OwnedRwLockWriteGuard::try_map(...)`. A method would interfere
/// with methods of the same name on the contents of the locked data.
///
/// [`RwLockMappedWriteGuard`]: struct@crate::sync::RwLockMappedWriteGuard
///
/// # Examples
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:4 | let lock = unsafe { ManuallyDrop::take(&mut this.lock) };
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(OwnedRwLockMappedWriteGuard {
lock: ManuallyDrop::new(lock),
data,
_p: PhantomData,
})
}
/// Converts this `Own... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:5 | /// let n = lock.clone().write_owned().await;
///
/// let cloned_lock = lock.clone();
/// let handle = tokio::spawn(async move {
/// *cloned_lock.write_owned().await = 2;
/// });
///
/// let n = n.downgrade();
/// assert_eq!(*n, 1, "downgrade is atomic");
///
/// drop(n);
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard.rs:6 | fn deref_mut(&mut self) -> &mut T {
unsafe { &mut *self.data }
}
}
impl<T: ?Sized> fmt::Debug for OwnedRwLockWriteGuard<T>
where
T: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**self, f)
}
}
impl<T: ?Sized> fmt::Display for OwnedRwLockWrite... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard.rs | 201 | 229 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::marker::PhantomData;
use std::sync::Arc;
use std::{fmt, mem, ops, ptr};
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`]. It is a
/// separate type from `... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | unsafe {
Inner {
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: ptr::read(&me.resource_span),
permits_acquired: me.permits_acquired,
lock: ptr::read(&me.lock),
data: me.data,
}
}
}
/... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | /// assert_eq!(Foo(2), *lock.read().await);
/// # }
/// ```
#[inline]
pub fn map<F, V: ?Sized>(mut this: Self, f: F) -> OwnedRwLockMappedWriteGuard<T, V>
where
F: FnOnce(&mut U) -> &mut V,
{
let data = f(&mut *this) as *mut V;
let this = this.skip_drop();
OwnedRw... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | ///
/// # #[tokio::main(flavor = "current_thread")]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let guard = Arc::clone(&lock).write_owned().await;
/// let mut guard = OwnedRwLockWriteGuard::try_map(guard, |f| Some(&mut f.0)).expect("should not ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | /// # Examples
///
/// ```
/// use std::sync::Arc;
/// use tokio::sync::{
/// RwLock,
/// OwnedRwLockWriteGuard,
/// OwnedRwLockMappedWriteGuard,
/// };
///
/// # #[tokio::main(flavor = "current_thread")]
/// # async fn main() {
/// let lock = Arc::new(RwLock:... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:6 | U: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**self, f)
}
}
impl<T: ?Sized, U: ?Sized> fmt::Display for OwnedRwLockMappedWriteGuard<T, U>
where
U: fmt::Display,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 201 | 230 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | unsafe {
Inner {
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: ptr::read(&me.resource_span),
permits_acquired: me.permits_acquired,
lock: ptr::read(&me.lock),
data: me.data,
}
}
}
/... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4565b81097e8938761431592c0ad36df3bd20cd2 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4565b81097e8938761431592c0ad36df3bd20cd2/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | /// assert_eq!(Foo(2), *lock.read().await);
/// # }
/// ```
#[inline]
pub fn map<F, V: ?Sized>(mut this: Self, f: F) -> OwnedRwLockMappedWriteGuard<T, V>
where
F: FnOnce(&mut U) -> &mut V,
{
let data = f(&mut *this) as *mut V;
let this = this.skip_drop();
OwnedRw... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4565b81097e8938761431592c0ad36df3bd20cd2 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4565b81097e8938761431592c0ad36df3bd20cd2/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | ///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let guard = Arc::clone(&lock).write_owned().await;
/// let mut guard = OwnedRwLockWriteGuard::try_map(guard, |f| Some(&mut f.0)).expect("should not fail");
/// *guard ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4565b81097e8938761431592c0ad36df3bd20cd2 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4565b81097e8938761431592c0ad36df3bd20cd2/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | /// # Examples
///
/// ```
/// use std::sync::Arc;
/// use tokio::sync::{
/// RwLock,
/// OwnedRwLockWriteGuard,
/// OwnedRwLockMappedWriteGuard,
/// };
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(1));
///
/// l... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4565b81097e8938761431592c0ad36df3bd20cd2 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4565b81097e8938761431592c0ad36df3bd20cd2/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | ///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let guard = Arc::clone(&lock).write_owned().await;
/// let mut guard = OwnedRwLockWriteGuard::try_map(guard, |f| Some(&mut f.0)).expect("should not fail");
/// *guard ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | type Target = U;
fn deref(&self) -> &U {
unsafe { &*self.data }
}
}
impl<T: ?Sized, U: ?Sized> ops::DerefMut for OwnedRwLockMappedWriteGuard<T, U> {
fn deref_mut(&mut self) -> &mut U {
unsafe { &mut *self.data }
}
}
impl<T: ?Sized, U: ?Sized> fmt::Debug for OwnedRwLockMappedWriteGuard... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 205 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`].... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | /// ```
/// use std::sync::Arc;
/// use tokio::sync::{RwLock, OwnedRwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | }
}
/// Attempts to make a new `OwnedRwLockMappedWriteGuard` for a component
/// of the locked data. The original guard is returned if the closure
/// returns `None`.
///
/// This operation cannot fail as the `OwnedRwLockMappedWriteGuard` passed
/// in already locked the data.
///
/... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | ) -> Result<OwnedRwLockMappedWriteGuard<T, V>, Self>
where
F: FnOnce(&mut U) -> Option<&mut V>,
{
let data = match f(&mut *this) {
Some(data) => data as *mut V,
None => return Err(this),
};
let lock = unsafe { ManuallyDrop::take(&mut this.lock) };
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | impl<T: ?Sized, U: ?Sized> fmt::Debug for OwnedRwLockMappedWriteGuard<T, U>
where
U: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**self, f)
}
}
impl<T: ?Sized, U: ?Sized> fmt::Display for OwnedRwLockMappedWriteGuard<T, U>
where
U: fmt::Display,
{
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 192 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`].... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | /// use std::sync::Arc;
/// use tokio::sync::{RwLock, OwnedRwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let lock = ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | }
/// Attempts to make a new `OwnedRwLockMappedWriteGuard` for a component
/// of the locked data. The original guard is returned if the closure
/// returns `None`.
///
/// This operation cannot fail as the `OwnedRwLockMappedWriteGuard` passed
/// in already locked the data.
///
/// Thi... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | where
F: FnOnce(&mut U) -> Option<&mut V>,
{
let data = match f(&mut *this) {
Some(data) => data as *mut V,
None => return Err(this),
};
let lock = unsafe { ManuallyDrop::take(&mut this.lock) };
let permits_acquired = this.permits_acquired;
#[c... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | where
U: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**self, f)
}
}
impl<T: ?Sized, U: ?Sized> fmt::Display for OwnedRwLockMappedWriteGuard<T, U>
where
U: fmt::Display,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Di... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 191 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`].... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | ///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let lock = Arc::clone(&lock);
/// let mut mapped = OwnedRwLockWriteGuard::map(lock.write_... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | /// in already locked the data.
///
/// This is an associated function that needs to be
/// used as `OwnedRwLockMappedWriteGuard::try_map(...)`. A method would interfere with
/// methods of the same name on the contents of the locked data.
///
/// # Examples
///
/// ```
/// use std::... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | let lock = unsafe { ManuallyDrop::take(&mut this.lock) };
let permits_acquired = this.permits_acquired;
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(OwnedRwLockMappedWriteGuard {
permits_acquired,
lock: ManuallyDrop::new(lock),
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 171 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:5 | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&**self, f)
}
}
impl<T: ?Sized, U: ?Sized> Drop for OwnedRwLockMappedWriteGuard<T, U> {
fn drop(&mut self) {
self.lock.s.release(self.permits_acquired as usize);
unsafe { ManuallyDrop::drop(&mut self.lock) };
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 161 | 171 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`].... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | e89c8981f151a667bb676213d38b7dbeb51620e9 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e89c8981f151a667bb676213d38b7dbeb51620e9/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:1 | use crate::sync::rwlock::RwLock;
use std::fmt;
use std::marker::PhantomData;
use std::mem::{self, ManuallyDrop};
use std::ops;
use std::sync::Arc;
/// Owned RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/// This structure is created by [mapping] an [`OwnedRwLockWriteGuard`].... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:2 | /// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = Arc::new(RwLock::new(Foo(1)));
///
/// {
/// let lock = Arc::clone(&lock);
/// let mut mapped = OwnedRwLockWriteGuard::map(lock.write_owned().... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:3 | /// used as `OwnedRwLockMappedWriteGuard::try_map(...)`. A method would interfere with
/// methods of the same name on the contents of the locked data.
///
/// # Examples
///
/// ```
/// use std::sync::Arc;
/// use tokio::sync::{RwLock, OwnedRwLockWriteGuard};
///
/// #[derive(Debug,... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/owned_write_guard_mapped.rs:4 | Ok(OwnedRwLockMappedWriteGuard {
lock: ManuallyDrop::new(lock),
data,
_p: PhantomData,
})
}
}
impl<T: ?Sized, U: ?Sized> ops::Deref for OwnedRwLockMappedWriteGuard<T, U> {
type Target = U;
fn deref(&self) -> &U {
unsafe { &*self.data }
}
}
impl<T: ?... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/owned_write_guard_mapped.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/owned_write_guard_mapped.rs | 121 | 166 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::marker::PhantomData;
use std::{fmt, mem, ops};
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
/// [... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | s: me.s,
data: me.data,
}
}
/// Makes a new `RwLockReadGuard` for a component of the locked data.
///
/// This operation cannot fail as the `RwLockReadGuard` passed in already
/// locked the data.
///
/// This is an associated function that needs to be
/// used as `R... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | where
F: FnOnce(&T) -> &U,
{
let data = f(&*this) as *const U;
let this = this.skip_drop();
RwLockReadGuard {
s: this.s,
data,
marker: PhantomData,
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: this.resour... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | /// # #[tokio::main(flavor = "current_thread")]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;
/// let guard = RwLockReadGuard::try_map(guard, |f| Some(&f.0)).expect("should not fail");
///
/// assert_eq!(1, *guard);
/// # }
/// ```... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/read_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:5 | where
T: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Debug::fmt(&**self, f)
}
}
impl<'a, T: ?Sized> fmt::Display for RwLockReadGuard<'a, T>
where
T: fmt::Display,
{
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&**self... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/read_guard.rs | 161 | 191 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | s: me.s,
data: me.data,
}
}
/// Makes a new `RwLockReadGuard` for a component of the locked data.
///
/// This operation cannot fail as the `RwLockReadGuard` passed in already
/// locked the data.
///
/// This is an associated function that needs to be
/// used as `R... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | where
F: FnOnce(&T) -> &U,
{
let data = f(&*this) as *const U;
let this = this.skip_drop();
RwLockReadGuard {
s: this.s,
data,
marker: PhantomData,
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: this.resour... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | /// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;
/// let guard = RwLockReadGuard::try_map(guard, |f| Some(&f.0)).expect("should not fail");
///
/// assert_eq!(1, *guard);
/// # }
/// ```
#[inline]
pub fn t... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/read_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | /// # Examples
///
/// ```
/// use tokio::sync::{RwLock, RwLockReadGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | /// locked data. The original guard is returned if the closure returns
/// `None`.
///
/// This operation cannot fail as the `RwLockReadGuard` passed in already
/// locked the data.
///
/// This is an associated function that needs to be used as
/// `RwLockReadGuard::try_map(..)`. A method w... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | Some(data) => data as *const U,
None => return Err(this),
};
let s = this.s;
#[cfg(all(tokio_unstable, feature = "tracing"))]
let resource_span = this.resource_span.clone();
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(RwL... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/read_guard.rs | 121 | 179 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:5 | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt::Display::fmt(&**self, f)
}
}
impl<'a, T: ?Sized> Drop for RwLockReadGuard<'a, T> {
fn drop(&mut self) {
self.s.release(1);
#[cfg(all(tokio_unstable, feature = "tracing"))]
self.resource_span.in_scope(|| {
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | d6dbefcdc043da552615bf2c8ad1f3a9580a1735 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/d6dbefcdc043da552615bf2c8ad1f3a9580a1735/tokio/src/sync/rwlock/read_guard.rs | 161 | 179 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | ///
/// ```
/// use tokio::sync::{RwLock, RwLockReadGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;
/// let guard ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | /// `None`.
///
/// This operation cannot fail as the `RwLockReadGuard` passed in already
/// locked the data.
///
/// This is an associated function that needs to be used as
/// `RwLockReadGuard::try_map(..)`. A method would interfere with methods of the
/// same name on the contents of the... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | None => return Err(this),
};
let s = this.s;
#[cfg(all(tokio_unstable, feature = "tracing"))]
let resource_span = this.resource_span.clone();
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(RwLockReadGuard {
s,
da... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4/tokio/src/sync/rwlock/read_guard.rs | 121 | 178 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:5 | fmt::Display::fmt(&**self, f)
}
}
impl<'a, T: ?Sized> Drop for RwLockReadGuard<'a, T> {
fn drop(&mut self) {
self.s.release(1);
#[cfg(all(tokio_unstable, feature = "tracing"))]
self.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_u... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/ff6fbc327dcd8f8d023dbe7b684d9ca13ac3aec4/tokio/src/sync/rwlock/read_guard.rs | 161 | 178 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | /// ```
/// use tokio::sync::{RwLock, RwLockReadGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;
/// let guard = RwLock... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | ///
/// This operation cannot fail as the `RwLockReadGuard` passed in already
/// locked the data.
///
/// This is an associated function that needs to be used as
/// `RwLockReadGuard::try_map(..)`. A method would interfere with methods of the
/// same name on the contents of the locked data.
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | };
let s = this.s;
#[cfg(all(tokio_unstable, feature = "tracing"))]
let resource_span = this.resource_span.clone();
// NB: Forget to avoid drop impl from being called.
mem::forget(this);
Ok(RwLockReadGuard {
s,
data,
marker: marker::Ph... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/read_guard.rs | 121 | 177 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:5 | }
}
impl<'a, T: ?Sized> Drop for RwLockReadGuard<'a, T> {
fn drop(&mut self) {
self.s.release(1);
#[cfg(all(tokio_unstable, feature = "tracing"))]
self.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_update",
current_reader... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 4e3268d222423e874f5bbfa67e20f773da3c025f | github | async-runtime | https://github.com/tokio-rs/tokio/blob/4e3268d222423e874f5bbfa67e20f773da3c025f/tokio/src/sync/rwlock/read_guard.rs | 161 | 177 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:2 | ///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// let guard = lock.read().await;
/// let guard = RwLockReadGuard::map(guard, |f| &f.0);
///
/// assert_eq!(1, *... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/read_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:3 | ///
/// This is an asynchronous version of [`RwLockReadGuard::try_map`] from the
/// [`parking_lot` crate].
///
/// [`RwLockReadGuard::try_map`]: https://docs.rs/lock_api/latest/lock_api/struct.RwLockReadGuard.html#method.try_map
/// [`parking_lot` crate]: https://crates.io/crates/parking_lot
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/read_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:4 | marker: marker::PhantomData,
})
}
}
impl<T: ?Sized> ops::Deref for RwLockReadGuard<'_, T> {
type Target = T;
fn deref(&self) -> &T {
unsafe { &*self.data }
}
}
impl<'a, T: ?Sized> fmt::Debug for RwLockReadGuard<'a, T>
where
T: fmt::Debug,
{
fn fmt(&self, f: &mut fmt::Formatter... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 03969cdae7674681d1b10926e6a56fbb8908dbb8 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/03969cdae7674681d1b10926e6a56fbb8908dbb8/tokio/src/sync/rwlock/read_guard.rs | 121 | 156 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | 0dc4769708279a076e01a66dc53ec226083c1bdb | github | async-runtime | https://github.com/tokio-rs/tokio/blob/0dc4769708279a076e01a66dc53ec226083c1bdb/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/read_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use std::fmt;
use std::marker;
use std::mem;
use std::ops;
/// RAII structure used to release the shared read access of a lock when
/// dropped.
///
/// This structure is created by the [`read`] method on
/// [`RwLock`].
///
/// [`read`]: method@crate::sync::RwLock::read
//... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/read_guard.rs | MIT | e3f2dcf5bc8315f01c8843259e78c8e98203a978 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/e3f2dcf5bc8315f01c8843259e78c8e98203a978/tokio/src/sync/rwlock/read_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:1 | use crate::sync::batch_semaphore::Semaphore;
use crate::sync::rwlock::read_guard::RwLockReadGuard;
use crate::sync::rwlock::write_guard_mapped::RwLockMappedWriteGuard;
use std::marker::PhantomData;
use std::{fmt, mem, ops};
/// RAII structure used to release the exclusive write access of a lock when
/// dropped.
///
/... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 1 | 60 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:2 | // forgets the originals, so in the end no value is duplicated.
Inner {
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: unsafe { std::ptr::read(&me.resource_span) },
permits_acquired: me.permits_acquired,
s: me.s,
data: me.data,
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:3 | /// *mapped = 2;
/// }
///
/// assert_eq!(Foo(2), *lock.read().await);
/// # }
/// ```
#[inline]
pub fn map<F, U: ?Sized>(mut this: Self, f: F) -> RwLockMappedWriteGuard<'a, U>
where
F: FnOnce(&mut T) -> &mut U,
{
let data = f(&mut *this) as *mut U;
let th... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:4 | /// [`RwLockWriteGuard::map`]: https://docs.rs/lock_api/latest/lock_api/struct.RwLockWriteGuard.html#method.map
/// [`RwLockWriteGuard::downgrade`]: https://docs.rs/lock_api/latest/lock_api/struct.RwLockWriteGuard.html#method.downgrade
/// [`parking_lot` crate]: https://crates.io/crates/parking_lot
///
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:5 | #[cfg(all(tokio_unstable, feature = "tracing"))]
guard.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_update",
write_locked = false,
write_locked.op = "override",
)
});
#[cfg(all(tokio_unstable, feature ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:6 | ///
/// ```
/// use tokio::sync::{RwLock, RwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main(flavor = "current_thread")]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// {
/// let gua... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:7 | resource_span: this.resource_span,
})
}
/// Attempts to make a new [`RwLockReadGuard`] for a component of
/// the locked data. The original guard is returned if the closure returns
/// `None`.
///
/// This operation cannot fail as the `RwLockWriteGuard` passed in already
/// locked ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 241 | 300 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:8 | /// let guard = RwLockWriteGuard::try_downgrade_map(lock.write().await, |f| Some(&f.0)).expect("should not fail");
/// let foo = lock.read().await;
/// assert_eq!(foo.0, *guard);
/// # }
/// ```
#[inline]
pub fn try_downgrade_map<F, U: ?Sized>(this: Self, f: F) -> Result<RwLockReadGuard<'a, U>, ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 281 | 340 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:9 | current_readers = 1,
current_readers.op = "add",
)
});
Ok(guard)
}
/// Converts this `RwLockWriteGuard` into an `RwLockMappedWriteGuard`. This
/// method can be used to store a non-mapped guard in a struct field that
/// expects a mapped guard.
///
/// T... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 321 | 380 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:10 | /// let cloned_lock = lock.clone();
/// let handle = tokio::spawn(async move {
/// *cloned_lock.write().await = 2;
/// });
///
/// let n = n.downgrade();
/// assert_eq!(*n, 1, "downgrade is atomic");
///
/// drop(n);
/// handle.await.unwrap();
/// assert_eq!(*lock.read().awai... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 361 | 420 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:11 | tracing::trace!(
target: "runtime::resource::state_update",
current_readers = 1,
current_readers.op = "add",
)
});
guard
}
}
impl<T: ?Sized> ops::Deref for RwLockWriteGuard<'_, T> {
type Target = T;
fn deref(&self) -> &T {
unsafe { &... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 401 | 457 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:12 | }
}
impl<'a, T: ?Sized> Drop for RwLockWriteGuard<'a, T> {
fn drop(&mut self) {
self.s.release(self.permits_acquired as usize);
#[cfg(all(tokio_unstable, feature = "tracing"))]
self.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_updat... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/c6d58ce7e7bf4a6e7e6efc1ffeb42daa3a627c17/tokio/src/sync/rwlock/write_guard.rs | 441 | 457 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:2 | // forgets the originals, so in the end no value is duplicated.
Inner {
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: unsafe { std::ptr::read(&me.resource_span) },
permits_acquired: me.permits_acquired,
s: me.s,
data: me.data,
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 41 | 100 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:3 | /// *mapped = 2;
/// }
///
/// assert_eq!(Foo(2), *lock.read().await);
/// # }
/// ```
#[inline]
pub fn map<F, U: ?Sized>(mut this: Self, f: F) -> RwLockMappedWriteGuard<'a, U>
where
F: FnOnce(&mut T) -> &mut U,
{
let data = f(&mut *this) as *mut U;
let th... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:4 | /// [`RwLockWriteGuard::map`]: https://docs.rs/lock_api/latest/lock_api/struct.RwLockWriteGuard.html#method.map
/// [`RwLockWriteGuard::downgrade`]: https://docs.rs/lock_api/latest/lock_api/struct.RwLockWriteGuard.html#method.downgrade
/// [`parking_lot` crate]: https://crates.io/crates/parking_lot
///
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:5 | #[cfg(all(tokio_unstable, feature = "tracing"))]
guard.resource_span.in_scope(|| {
tracing::trace!(
target: "runtime::resource::state_update",
write_locked = false,
write_locked.op = "override",
)
});
#[cfg(all(tokio_unstable, feature ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:6 | ///
/// ```
/// use tokio::sync::{RwLock, RwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// let lock = RwLock::new(Foo(1));
///
/// {
/// let guard = lock.write().await;
... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 201 | 260 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:7 | resource_span: this.resource_span,
})
}
/// Attempts to make a new [`RwLockReadGuard`] for a component of
/// the locked data. The original guard is returned if the closure returns
/// `None`.
///
/// This operation cannot fail as the `RwLockWriteGuard` passed in already
/// locked ... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 241 | 300 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:9 | current_readers = 1,
current_readers.op = "add",
)
});
Ok(guard)
}
/// Converts this `RwLockWriteGuard` into an `RwLockMappedWriteGuard`. This
/// method can be used to store a non-mapped guard in a struct field that
/// expects a mapped guard.
///
/// T... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 002f4a28c882d127a665bb8d71f751d4eb5e1b22 | github | async-runtime | https://github.com/tokio-rs/tokio/blob/002f4a28c882d127a665bb8d71f751d4eb5e1b22/tokio/src/sync/rwlock/write_guard.rs | 321 | 380 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:3 | /// *mapped = 2;
/// }
///
/// assert_eq!(Foo(2), *lock.read().await);
/// # }
/// ```
#[inline]
pub fn map<F, U: ?Sized>(mut this: Self, f: F) -> RwLockMappedWriteGuard<'a, U>
where
F: FnOnce(&mut T) -> &mut U,
{
let data = f(&mut *this) as *mut U;
let th... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/write_guard.rs | 81 | 140 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:4 | /// [`parking_lot` crate]: https://crates.io/crates/parking_lot
///
/// # Examples
///
/// ```
/// use tokio::sync::{RwLock, RwLockWriteGuard};
///
/// #[derive(Debug, Clone, Copy, PartialEq, Eq)]
/// struct Foo(u32);
///
/// # #[tokio::main]
/// # async fn main() {
/// l... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/write_guard.rs | 121 | 180 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:5 | data,
marker: PhantomData,
#[cfg(all(tokio_unstable, feature = "tracing"))]
resource_span: this.resource_span,
})
}
/// Converts this `RwLockWriteGuard` into an `RwLockMappedWriteGuard`. This
/// method can be used to store a non-mapped guard in a struct field th... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/write_guard.rs | 161 | 220 |
tokio-rs/tokio:tokio/src/sync/rwlock/write_guard.rs:6 | /// let handle = tokio::spawn(async move {
/// *cloned_lock.write().await = 2;
/// });
///
/// let n = n.downgrade();
/// assert_eq!(*n, 1, "downgrade is atomic");
///
/// drop(n);
/// handle.await.unwrap();
/// assert_eq!(*lock.read().await, 2, "second writer obtained write lock... | rust | rust | rust-source | tokio-rs/tokio | tokio/src/sync/rwlock/write_guard.rs | MIT | 24aac0add3547803b571e9d5c6d6c3ecbd09bb5b | github | async-runtime | https://github.com/tokio-rs/tokio/blob/24aac0add3547803b571e9d5c6d6c3ecbd09bb5b/tokio/src/sync/rwlock/write_guard.rs | 201 | 260 |
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