Struct Limit

pub struct Limit<A> { /* private fields */ }

Implementations

impl<A: GlobalAlloc> Limit<A>

pub const fn new(limit: usize, alloc: A) -> Self

Examples found in repository

examples/huge_vec.rs (line 6)

static A: Limit<System> = Limit::new(4_000_000, System);

pub unsafe fn try_alloc(&self, layout: Layout) -> Option<*mut u8>

Returns None if the memory limit would be exhausted after allocating.

Safety

The same restrictions as GlobalAlloc::alloc.

pub fn remaining(&self) -> usize

Returns remaining memory in bytes. This value does not guarantee that an allocation of x bytes will succeed.

Trait Implementations

impl<'a, A: GlobalAlloc> GlobalAlloc for &'a Limit<A>

unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.

impl<A: GlobalAlloc> GlobalAlloc for Limit<A>

unsafe fn alloc(&self, layout: Layout) -> *mut u8

Allocates memory as described by the given layout.

unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout)

Deallocates the block of memory at the given ptr pointer with the given layout.

unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8

Behaves like alloc, but also ensures that the contents are set to zero before being returned.

unsafe fn realloc( &self, ptr: *mut u8, layout: Layout, new_size: usize, ) -> *mut u8

Shrinks or grows a block of memory to the given new_size in bytes. The block is described by the given ptr pointer and layout.