Struct System

#[non_exhaustive]
pub struct System;

Available on crate feature alloc only.

System buffer that can be used in combination with an Allocator.

This uses the System allocator.

Examples

use musli::alloc::{System, Vec};

let alloc = System::new();

let mut buf1 = Vec::new_in(alloc);
let mut buf2 = Vec::new_in(alloc);
buf1.extend_from_slice(b"Hello, ")?;
buf2.extend_from_slice(b"world!")?;

assert_eq!(buf1.as_slice(), b"Hello, ");
assert_eq!(buf2.as_slice(), b"world!");

buf1.extend(buf2);
assert_eq!(buf1.as_slice(), b"Hello, world!");

Implementations

impl System

pub const fn new() -> Self

Construct a new system allocator.

Trait Implementations

impl Allocator for System

const IS_SYSTEM: bool = true

Whether the allocations returned by this allocatore is backed by the system allocator or not.

type Alloc<T> = SystemAlloc<T>

A raw allocation from the allocator.

fn alloc<T>(self, value: T) -> Result<Self::Alloc<T>, AllocError>

Construct an empty uninitialized raw allocation with an alignment matching that of T that is associated with this allocator.

fn alloc_empty<T>(self) -> Self::Alloc<T>

Construct an empty uninitialized raw vector with an alignment matching that of T that is associated with this allocator.

impl Clone for System

fn clone(&self) -> System

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for System

fn default() -> Self

Returns the “default value” for a type.

impl Copy for System