1 // SPDX-License-Identifier: GPL-2.0
6 use core::alloc::{GlobalAlloc, Layout};
7 use core::ptr;
15 /// - `ptr` can be either null or a pointer which has been allocated by this allocator.
16 /// - `new_layout` must have a non-zero size.
17 pub(crate) unsafe fn krealloc_aligned(ptr: *mut u8, new_layout: Layout, flags: Flags) -> *mut u8 {  in krealloc_aligned()
27     // - `ptr` is either null or a pointer returned from a previous `k{re}alloc()` by the  in krealloc_aligned()
29     // - `size` is greater than 0 since it's from `layout.size()` (which cannot be zero according  in krealloc_aligned()
31     unsafe { bindings::krealloc(ptr as *const core::ffi::c_void, size, flags.0) as *mut u8 }  in krealloc_aligned()  constant
35     unsafe fn alloc(&self, layout: Layout) -> *mut u8 {  in alloc()
36         // SAFETY: `ptr::null_mut()` is null and `layout` has a non-zero size by the function safety  in alloc()
43             bindings::kfree(ptr as *const core::ffi::c_void);  in dealloc()  constant
47     unsafe fn realloc(&self, ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8 {  in realloc()
49         // - `new_size`, when rounded up to the nearest multiple of `layout.align()`, will not  in realloc()
51         // - `layout.align()` is a proper alignment (i.e. not zero and must be a power of two).  in realloc()
55         // - `ptr` is either null or a pointer allocated by this allocator by the function safety  in realloc()
57         // - the size of `layout` is not zero because `new_size` is not zero by the function safety  in realloc()
62     unsafe fn alloc_zeroed(&self, layout: Layout) -> *mut u8 {  in alloc_zeroed()
63         // SAFETY: `ptr::null_mut()` is null and `layout` has a non-zero size by the function safety  in alloc_zeroed()
72 // See <https://github.com/rust-lang/rust/pull/86844>.