Struct ThreadPool 

pub struct ThreadPool { /* private fields */ }

Implementations

impl ThreadPool

pub fn new(pool_size: u8) -> Self

Creates a new thread pool with the following behavior constraints:

• pool_size is 0: runs in multithreaded default mode using maximum parallelism
• pool_size is 1: runs in single-threaded mode (all jobs are run in the main thread)
• pool_size is 1<N<=255: runs in multithreaded mode with N jobs

pub fn execute<F>(&self, f: F) -> Result<(), Box<dyn Error>>

where F: FnOnce() + Send + 'static,

Executes a job on the thread pool.

Behavior

• Single-threaded mode (max_jobs=1): Job executes synchronously in the calling thread
• Multi-threaded mode: Job is queued and executed asynchronously by worker threads

pub fn is_single_threaded(&self) -> bool

Returns true if running in single-threaded mode.

Single-threaded mode is active when max_jobs=1, resulting in:

• No worker threads spawned
• No message passing channel created
• All jobs executed synchronously in the main thread

Trait Implementations

impl Default for ThreadPool

fn default() -> Self

Returns the “default value” for a type.

impl Display for ThreadPool

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

Formats the value using the given formatter.

impl Drop for ThreadPool

fn drop(&mut self)

Executes the destructor for this type.