Struct VmHeap 

pub struct VmHeap {
    vm: &'static Vm,
    zones: [Vec<Arc<UmaZone>>; 15],
    stats: CpuLocal<RefCell<Stats>>,
}

Kernel heap that allocate a memory from a virtual memory management system. This struct is a merge of malloc_type and malloc_type_internal structure.

Fields

vm: &'static Vm

zones: [Vec<Arc<UmaZone>>; 15]

stats: CpuLocal<RefCell<Stats>>

Implementations

impl VmHeap

const KMEM_ZSHIFT: usize = 4

const KMEM_ZBASE: usize = 16

const KMEM_ZMASK: usize

const KMEM_ZSIZE: usize

pub fn new(vm: &'static Vm) -> Self

See kmeminit on the Orbis for a reference.

Reference offsets

Version	Offset
PS4 11.00	0x1A4B80

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

Returns null on failure.

See malloc on the Orbis for a reference.

Safety

layout must be nonzero.

Reference offsets

Version	Offset
PS4 11.00	0x1A4220

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

See free on the Orbis for a reference.

Safety

ptr must be obtained with Self::alloc() and layout must be the same one that was passed to that method.

Reference offsets

Version	Offset
PS4 11.00	0x1A43E0

fn zone_for_layout(&self, layout: Layout) -> Option<&UmaZone>

Returns None if align is not supported.

Panics

If size greater than PAGE_SIZE.