Struct MallocSizeOfOps

pub struct MallocSizeOfOps { /* private fields */ }

Operations used when measuring heap usage of data structures.

Implementations

impl MallocSizeOfOps

pub fn new( size_of: unsafe extern "C" fn(ptr: *const c_void) -> usize, malloc_enclosing_size_of: Option<unsafe extern "C" fn(ptr: *const c_void) -> usize>, have_seen_ptr: Option<Box<dyn FnMut(*const c_void) -> bool>>, ) -> Self

pub unsafe fn malloc_size_of<T: ?Sized>(&self, ptr: *const T) -> usize

Call size_of_op on ptr, first checking that the allocation isn’t empty, because some types (such as Vec) utilize empty allocations.

pub fn has_malloc_enclosing_size_of(&self) -> bool

Is an enclosing_size_of_op available?

pub unsafe fn malloc_enclosing_size_of<T>(&self, ptr: *const T) -> usize

Call enclosing_size_of_op, which must be available, on ptr, which must not be empty.

pub fn have_seen_ptr<T>(&mut self, ptr: *const T) -> bool

Call have_seen_ptr_op on ptr.