Struct tikv::server::status_server::profiler_guard::PROFILER_MUTEX

[+] Show declaration

struct PROFILER_MUTEX {
    __private_field: (),
}

Fields

__private_field: ()

Methods from Deref<Target = Mutex<u32>>

pub async fn lock(&'_ self) -> MutexGuard<'_, T>[−]

Locks this mutex, causing the current task to yield until the lock has been acquired. When the lock has been acquired, function returns a MutexGuard.

Examples

use tokio::sync::Mutex;

#[tokio::main]
async fn main() {
    let mutex = Mutex::new(1);

    let mut n = mutex.lock().await;
    *n = 2;
}

pub async fn lock_owned(self: Arc<Mutex<T>>) -> OwnedMutexGuard<T>[−]

Locks this mutex, causing the current task to yield until the lock has been acquired. When the lock has been acquired, this returns an OwnedMutexGuard.

This method is identical to Mutex::lock, except that the returned guard references the Mutex with an Arc rather than by borrowing it. Therefore, the Mutex must be wrapped in an Arc to call this method, and the guard will live for the 'static lifetime, as it keeps the Mutex alive by holding an Arc.

Examples

use tokio::sync::Mutex;
use std::sync::Arc;

#[tokio::main]
async fn main() {
    let mutex = Arc::new(Mutex::new(1));

    let mut n = mutex.clone().lock_owned().await;
    *n = 2;
}

pub fn try_lock(&self) -> Result<MutexGuard<'_, T>, TryLockError>[−]

Attempts to acquire the lock, and returns TryLockError if the lock is currently held somewhere else.

Examples

use tokio::sync::Mutex;

let mutex = Mutex::new(1);

let n = mutex.try_lock()?;
assert_eq!(*n, 1);

pub fn try_lock_owned(
    self: Arc<Mutex<T>>
) -> Result<OwnedMutexGuard<T>, TryLockError>[−]

Attempts to acquire the lock, and returns TryLockError if the lock is currently held somewhere else.

This method is identical to Mutex::try_lock, except that the returned guard references the Mutex with an Arc rather than by borrowing it. Therefore, the Mutex must be wrapped in an Arc to call this method, and the guard will live for the 'static lifetime, as it keeps the Mutex alive by holding an Arc.

Examples

use tokio::sync::Mutex;
use std::sync::Arc;

let mutex = Arc::new(Mutex::new(1));

let n = mutex.clone().try_lock_owned()?;
assert_eq!(*n, 1);

Trait Implementations

impl Deref for PROFILER_MUTEX[+]

[+] Show hidden undocumented items

type Target = Mutex<u32>

The resulting type after dereferencing.

fn deref(&self) -> &Mutex<u32>[−]

Dereferences the value.

impl LazyStatic for PROFILER_MUTEX[+]

[+] Show hidden undocumented items

fn initialize(lazy: &Self)