Struct PolarsAllocator

pub struct PolarsAllocator(/* private fields */);

A memory allocator that relays allocations to the allocator used by Polars.

You can use it as the global memory allocator:

use pyo3_polars::PolarsAllocator;

#[global_allocator]
static ALLOC: PolarsAllocator = PolarsAllocator::new();

If the allocator capsule (polars.polars._allocator) is not available, this allocator fallbacks to std::alloc::System.

Implementations

impl PolarsAllocator

pub const fn new() -> Self

Create a PolarsAllocator.

Trait Implementations

impl Default for PolarsAllocator

fn default() -> Self

Returns the “default value” for a type.

impl GlobalAlloc for PolarsAllocator

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.