Struct SpinLatch

pub(crate) struct SpinLatch<'r> {
    core_latch: CoreLatch,
    registry: &'r Arc<Registry>,
    target_worker_index: usize,
    cross: bool,
}

Spin latches are the simplest, most efficient kind, but they do not support a wait() operation. They just have a boolean flag that becomes true when set() is called.

Fields

core_latch: CoreLatch

registry: &'r Arc<Registry>

target_worker_index: usize

cross: bool

Implementations

impl<'r> SpinLatch<'r>

pub(crate) fn new(thread: &'r WorkerThread) -> SpinLatch<'r>

Creates a new spin latch that is owned by thread. This means that thread is the only thread that should be blocking on this latch – it also means that when the latch is set, we will wake thread if it is sleeping.

pub(crate) fn cross(thread: &'r WorkerThread) -> SpinLatch<'r>

Creates a new spin latch for cross-threadpool blocking. Notably, we need to make sure the registry is kept alive after setting, so we can safely call the notification.

pub(crate) fn probe(&self) -> bool

Trait Implementations

impl<'r> AsCoreLatch for SpinLatch<'r>

fn as_core_latch(&self) -> &CoreLatch

impl<'r> Latch for SpinLatch<'r>

unsafe fn set(this: *const Self)

Set the latch, signalling others.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes