| use crate::alloc::{GlobalAlloc, Layout, System}; |
| use crate::ptr; |
| use crate::sys::hermit::abi; |
| |
| #[stable(feature = "alloc_system_type", since = "1.28.0")] |
| unsafe impl GlobalAlloc for System { |
| #[inline] |
| unsafe fn alloc(&self, layout: Layout) -> *mut u8 { |
| abi::malloc(layout.size(), layout.align()) |
| } |
| |
| unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 { |
| let addr = abi::malloc(layout.size(), layout.align()); |
| |
| if !addr.is_null() { |
| ptr::write_bytes(addr, 0x00, layout.size()); |
| } |
| |
| addr |
| } |
| |
| #[inline] |
| unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) { |
| abi::free(ptr, layout.size(), layout.align()) |
| } |
| |
| #[inline] |
| unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 { |
| abi::realloc(ptr, layout.size(), layout.align(), new_size) |
| } |
| } |