Struct snmalloc_rs::SnMalloc

pub struct SnMalloc;

Trait Implementations

impl GlobalAlloc for SnMalloc

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

Allocate the memory with the given alignment and size. On success, it returns a pointer pointing to the required memory address. On failure, it returns a null pointer. The client must assure the following things:

• alignment is greater than zero
• Other constrains are the same as the rust standard library. The program may be forced to abort if the constrains are not full-filled.

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

De-allocate the memory at the given address with the given alignment and size. The client must assure the following things:

• the memory is acquired using the same allocator and the pointer points to the start position.
• Other constrains are the same as the rust standard library. The program may be forced to abort if the constrains are not full-filled.

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

Re-allocate the memory at the given address with the given alignment and size. On success, it returns a pointer pointing to the required memory address. The memory content within the new_size will remains the same as previous. On failure, it returns a null pointer. In this situation, the previous memory is not returned to the allocator. The client must assure the following things:

• the memory is acquired using the same allocator and the pointer points to the start position
• alignment fulfills all the requirements as rust_alloc
• Other constrains are the same as the rust standard library. The program may be forced to abort if the constrains are not full-filled.