Struct CountSem 

pub struct CountSem { /* private fields */ }

A counting semaphore.

Implementations

impl CountSem

pub fn new(name: &str, initial_value: u32) -> Result<Self>

Creates a new counting semaphore.

For portability, keep initial_value within short int range (0–32767). Some RTOS impose upper limits.

Arguments

• name: A unique string to identify the semaphore.
• initial_value: The initial count of the semaphore.

pub fn give(&self) -> Result<()>

Increments (gives) the semaphore’s count.

pub fn take(&self) -> Result<()>

Blocks until the semaphore’s count is non-zero, then decrements it.

pub fn timed_wait(&self, timeout_ms: u32) -> Result<()>

Blocks until the semaphore can be taken, with a timeout.

Arguments

• timeout_ms: Timeout in milliseconds.

pub fn get_id_by_name(name: &str) -> Result<OsalId>

Finds an existing counting semaphore ID by its name.

pub fn get_info(&self) -> Result<CountSemProp>

Retrieves information about this counting semaphore.

Trait Implementations

impl Debug for CountSem

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

Formats the value using the given formatter.

impl Drop for CountSem

fn drop(&mut self)

Executes the destructor for this type.