Struct tokio_sync::semaphore::TryAcquireError

[+] Show declaration

pub struct TryAcquireError { /* fields omitted */ }

[−] Expand description

Error returned by Permit::try_acquire.

Implementations

impl TryAcquireError[−]

pub fn is_closed(&self) -> bool[−]

Returns true if the error was caused by a closed semaphore.

pub fn is_no_permits(&self) -> bool[−]

Returns true if the error was caused by calling try_acquire on a semaphore with no available permits.

Trait Implementations

impl Debug for TryAcquireError[+]

[+] Show hidden undocumented items

fn fmt(&self, f: &mut Formatter<'_>) -> Result[−]

Formats the value using the given formatter.

impl Display for TryAcquireError[+]

[+] Show hidden undocumented items

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result[−]

Formats the value using the given formatter.

impl Error for TryAcquireError[+]

[+] Show hidden undocumented items

fn description(&self) -> &str[−]

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

pub fn source(&self) -> Option<&(dyn Error + 'static)>[−]

The lower-level source of this error, if any.

pub fn backtrace(&self) -> Option<&Backtrace>[−]

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

pub fn cause(&self) -> Option<&dyn Error>

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting