Struct alloc_cortex_m::CortexMHeap
source · pub struct CortexMHeap { /* private fields */ }
Implementations§
source§impl CortexMHeap
impl CortexMHeap
sourcepub const fn empty() -> CortexMHeap
pub const fn empty() -> CortexMHeap
Crate a new UNINITIALIZED heap allocator
You must initialize this heap using the
init
method before using the allocator.
sourcepub unsafe fn init(&self, start_addr: usize, size: usize)
pub unsafe fn init(&self, start_addr: usize, size: usize)
Initializes the heap
This function must be called BEFORE you run any code that makes use of the allocator.
start_addr
is the address where the heap will be located.
size
is the size of the heap in bytes.
Note that:
-
The heap grows “upwards”, towards larger addresses. Thus
end_addr
must be larger thanstart_addr
-
The size of the heap is
(end_addr as usize) - (start_addr as usize)
. The allocator won’t use the byte atend_addr
.
Safety
Obey these or Bad Stuff will happen.
- This function must be called exactly ONCE.
size > 0
Trait Implementations§
source§impl GlobalAlloc for CortexMHeap
impl GlobalAlloc for CortexMHeap
source§unsafe fn alloc(&self, layout: Layout) -> *mut u8
unsafe fn alloc(&self, layout: Layout) -> *mut u8
Allocate memory as described by the given
layout
. Read more