Trait PlatformAlloc 

pub trait PlatformAlloc {
    // Required methods
    fn alloc(size: usize) -> *mut c_void;
    fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void;
    fn dealloc(ptr: *mut c_void);

    // Provided methods
    fn heap_used_bytes() -> usize { ... }
    fn heap_total_bytes() -> usize { ... }
}

Heap memory allocation.

Required Methods

fn alloc(size: usize) -> *mut c_void

Allocate size bytes. Returns null on failure.

fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void

Reallocate a previously allocated block. Returns null on failure.

fn dealloc(ptr: *mut c_void)

Free a previously allocated block.

Provided Methods

fn heap_used_bytes() -> usize

Phase 230 Z5 / RFC-0034 D7 — bytes currently allocated from the platform heap. The true unified figure where the platform owns one kernel heap shared by the C side (alloc) and the Rust #[global_allocator]. Default 0 = “unknown / not instrumented”.

fn heap_total_bytes() -> usize

Total managed heap size in bytes (used + free), or 0 if unknown.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl PlatformAlloc for CffiPlatform

fn alloc(size: usize) -> *mut c_void

fn realloc(ptr: *mut c_void, size: usize) -> *mut c_void

fn dealloc(ptr: *mut c_void)

fn heap_used_bytes() -> usize

fn heap_total_bytes() -> usize

Implementors