Struct BufferPool 

pub struct BufferPool<M: RawMutex, T, const N: usize> { /* private fields */ }

Pool of N buffers of type T, synchronized with mutex M.

Free slots are tracked with a u32 bitmask, so N must be in 1..=32.

Implementations

impl<M: RawMutex, T, const N: usize> BufferPool<M, T, N>

pub const fn new(buffer: [T; N]) -> Self

Creates a pool with the given backing storage; all slots start available.

Valid N

N must be in 1..=32. Otherwise BufferPool::new panics when run, or fails const evaluation if used in a const item.

pub fn try_take(&'static self) -> Option<BufferGuard<M, T>>

Tries to take one buffer without blocking. Returns None if the pool is empty.

pub fn take(&'static self) -> impl Future<Output = BufferGuard<M, T>>

Waits until a buffer is available, then returns a guard.

If the pool is empty, the current task’s waker is registered; when another task drops a BufferGuard or MappedBufferGuard, waiters are woken.

Trait Implementations

impl<M: RawMutex + Send, T: Send, const N: usize> Send for BufferPool<M, T, N>

impl<M: RawMutex + Sync, T: Send, const N: usize> Sync for BufferPool<M, T, N>