Struct InstrumentedSystemAllocator 

pub struct InstrumentedSystemAllocator { /* private fields */ }

Rust’s System global allocator instrumented with allocation counters.

The counters track requested bytes, excluding allocator metadata, alignment padding, and fragmentation. All instances contribute to the same counters; install exactly one as the process global allocator.

Implementations

impl InstrumentedSystemAllocator

pub const fn new() -> Self

Trait Implementations

impl GlobalAlloc for InstrumentedSystemAllocator

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

Allocates memory as described by 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 dealloc(&self, ptr: *mut u8, layout: Layout)

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

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.