W3cubDocs

/Rust

Struct std::alloc::Global

pub struct Global;
🔬 This is a nightly-only experimental API. (allocator_api #32838)

The global memory allocator.

This type implements the Alloc trait by forwarding calls to the allocator registered with the #[global_allocator] attribute if there is one, or the std crate’s default.

Trait Implementations

impl Default for Global [src]

Returns the "default value" for a type. Read more

impl Alloc for Global [src]

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Returns a pointer meeting the size and alignment guarantees of layout. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Deallocate the memory referenced by ptr. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Returns a pointer suitable for holding data described by a new layout with layout’s alginment and a size given by new_size. To accomplish this, this may extend or shrink the allocation referenced by ptr to fit the new layout. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

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

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Returns bounds on the guaranteed usable size of a successful allocation created with the specified layout. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Behaves like alloc, but also returns the whole size of the returned block. For some layout inputs, like arrays, this may include extra storage usable for additional data. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Behaves like realloc, but also returns the whole size of the returned block. For some layout inputs, like arrays, this may include extra storage usable for additional data. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Attempts to extend the allocation referenced by ptr to fit new_size. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Attempts to shrink the allocation referenced by ptr to fit new_size. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Allocates a block suitable for holding an instance of T. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Deallocates a block suitable for holding an instance of T. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Allocates a block suitable for holding n instances of T. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Reallocates a block previously suitable for holding n_old instances of T, returning a block suitable for holding n_new instances of T. Read more

🔬 This is a nightly-only experimental API. (allocator_api #32838)

Deallocates a block suitable for holding n instances of T. Read more

impl Clone for Global [src]

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl Copy for Global [src]

impl Debug for Global [src]

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl Send for Global

impl Sync for Global

Blanket Implementations

impl<T, U> TryFrom for T where
    T: From<U>, 
[src]

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T> From for T [src]

Performs the conversion.

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
[src]

🔬 This is a nightly-only experimental API. (try_from #33417)

The type returned in the event of a conversion error.

🔬 This is a nightly-only experimental API. (try_from #33417)

Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
[src]

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
[src]

ⓘImportant traits for &'a mut I
impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<'a, R: Read + ?Sized> Read for &'a mut R
impl<'a, W: Write + ?Sized> Write for &'a mut W

Immutably borrows from an owned value. Read more

impl<T> BorrowMut for T where
    T: ?Sized
[src]

ⓘImportant traits for &'a mut I
impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized, 
    type Item = <I as Iterator>::Item;
impl<'a, R: Read + ?Sized> Read for &'a mut R
impl<'a, W: Write + ?Sized> Write for &'a mut W

Mutably borrows from an owned value. Read more

impl<T> Any for T where
    T: 'static + ?Sized
[src]

🔬 This is a nightly-only experimental API. (get_type_id #27745)this method will likely be replaced by an associated static

Gets the TypeId of self. Read more

impl<T> ToOwned for T where
    T: Clone
[src]

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/alloc/struct.Global.html