Struct gharial::TestAlloc

pub struct TestAlloc<A> where
    A: GlobalAlloc,  { /* fields omitted */ }

TestAlloc is a implementation for GlobalAlloc to test memory leak and so on.

It is a wrapper of another GlobalAlloc , and delegates the requests to the inner after testing.

The checks are followings.

• The argument *mut u8 passed to dealloc is not null. (The behavior is undefined according to GlobalAlloc interface.)
• The consistency of the argument Layout . i.e. the argument passed to dealloc matches to that passed to alloc having returned the corresponding pointer.
• All allocated memories have already been deallocated on the drop. (Note that cloned instances share the allocating memory information. The check is done when the last cloned instance is dropped.)

See also GAlloc . It is an alias to TestAlloc<std::alloc::System> .

Trait Implementations

impl<A> Clone for TestAlloc<A> where
    A: GlobalAlloc + Clone, 

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<A> Debug for TestAlloc<A> where
    A: GlobalAlloc + Debug, 

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<A> Default for TestAlloc<A> where
    A: GlobalAlloc + Default, 

fn default() -> Self

Returns the "default value" for a type.

impl<A> Drop for TestAlloc<A> where
    A: GlobalAlloc, 

fn drop(&mut self)

Executes the destructor for this type.

impl<A> From<A> for TestAlloc<A> where
    A: GlobalAlloc, 

fn from(inner: A) -> Self

Performs the conversion.

impl<A> GlobalAlloc for TestAlloc<A> where
    A: GlobalAlloc, 

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

Allocate memory as described by the given layout.

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

Deallocate 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

Shrink or grow a block of memory to the given new_size. The block is described by the given ptr pointer and layout.

impl<A> Send for TestAlloc<A> where
    A: GlobalAlloc + Send, 

impl<A> Sync for TestAlloc<A> where
    A: GlobalAlloc + Send + Sync,