Struct crossbeam_utils::CachePadded

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pub struct CachePadded<T> { /* fields omitted */ }

[−] Expand description

Pads T to the length of a cache line.

Sometimes concurrent programming requires a piece of data to be padded out to the size of a cacheline to avoid "false sharing": cache lines being invalidated due to unrelated concurrent activity. Use this type when you want to avoid cache locality.

Cache lines are assumed to be 64 bytes on all architectures.

Size and alignment

The size of CachePadded<T> is the smallest multiple of 64 bytes large enough to accommodate a value of type T.

The alignment of CachePadded<T> is the maximum of 64 bytes and the alignment of T.

Methods

impl<T> CachePadded<T>

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pub fn new(t: T) -> CachePadded<T>

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Pads a value to the length of a cache line.

Trait Implementations

impl<T: Sync> Sync for CachePadded<T>

impl<T: Default> Default for CachePadded<T>

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fn default() -> CachePadded<T>

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Returns the "default value" for a type.

impl<T> From<T> for CachePadded<T>

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fn from(t: T) -> Self

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Performs the conversion.

impl<T: Send> Send for CachePadded<T>

impl<T: Clone> Clone for CachePadded<T>

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fn clone(&self) -> CachePadded<T>

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Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

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Performs copy-assignment from source.

impl<T> Deref for CachePadded<T>

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type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &T

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Dereferences the value.

impl<T> DerefMut for CachePadded<T>

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fn deref_mut(&mut self) -> &mut T

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Mutably dereferences the value.

impl<T: Debug> Debug for CachePadded<T>

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

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Formats the value using the given formatter.