Struct orx_concurrent_vec::Linear

pub struct Linear { /* private fields */ }

Strategy which allows the split vector to grow linearly.

In other words, each new fragment will have equal capacity, which is equal to the capacity of the first fragment.

Examples

use orx_split_vec::*;

// SplitVec<usize, Linear>
let mut vec = SplitVec::with_linear_growth(4);

assert_eq!(1, vec.fragments().len());
assert_eq!(Some(16), vec.fragments().first().map(|f| f.capacity()));
assert_eq!(Some(0), vec.fragments().first().map(|f| f.len()));

// push 160 elements
for i in 0..10 * 16 {
    vec.push(i);
}

assert_eq!(10, vec.fragments().len());
for fragment in vec.fragments() {
    assert_eq!(16, fragment.len());
    assert_eq!(16, fragment.capacity());
}

// push the 161-st element
vec.push(42);
assert_eq!(11, vec.fragments().len());
assert_eq!(Some(16), vec.fragments().last().map(|f| f.capacity()));
assert_eq!(Some(1), vec.fragments().last().map(|f| f.len()));

Trait Implementations

impl Clone for Linear

fn clone(&self) -> Linear

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Linear

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

Formats the value using the given formatter.

impl Growth for Linear

unsafe fn get_ptr_mut<T>( &self, fragments: &mut [Fragment<T>], index: usize ) -> Option<*mut T>

O(1) Returns a mutable reference to the index-th element of the split vector of the fragments.

Returns None if index-th position does not belong to the split vector; i.e., if index is out of cumulative capacity of fragments.

Safety

This method allows to write to a memory which is greater than the split vector’s length. On the other hand, it will never return a pointer to a memory location that the vector does not own.

fn new_fragment_capacity<T>(&self, _fragments: &[Fragment<T>]) -> usize

Given that the split vector contains the given fragments, returns the capacity of the next fragment.

fn get_fragment_and_inner_indices<T>( &self, vec_len: usize, _fragments: &[Fragment<T>], element_index: usize ) -> Option<(usize, usize)>

O(fragments.len()) Returns the location of the element with the given element_index on the split vector as a tuple of (fragment-index, index-within-fragment).

fn maximum_concurrent_capacity<T>( &self, fragments: &[Fragment<T>], fragments_capacity: usize ) -> usize

Returns the maximum number of elements that can safely be stored in a concurrent program.

fn required_fragments_len<T>( &self, _: &[Fragment<T>], maximum_capacity: usize ) -> Result<usize, String>

Returns the number of fragments with this growth strategy in order to be able to reach a capacity of maximum_capacity of elements. Returns the error if it the growth strategy does not allow the required number of fragments.

impl GrowthWithConstantTimeAccess for Linear

fn get_fragment_and_inner_indices_unchecked( &self, element_index: usize ) -> (usize, usize)

O(1) Returns the location of the element with the given element_index on the split vector as a tuple of (fragment-index, index-within-fragment).

unsafe fn get_ptr_mut<T>( &self, fragments: &mut [Fragment<T>], index: usize ) -> Option<*mut T>

O(1) Returns a mutable reference to the index-th element of the split vector of the fragments.

impl PartialEq for Linear

fn eq(&self, other: &Linear) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Linear