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Create an EmptyFrameAllocator

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Philipp Oppermann
2019-03-13 14:30:13 +01:00
parent 6146ccba2d
commit 3e59283c19
1 changed files with 9 additions and 0 deletions
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9
src/memory.rs
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@@ -54,3 +54,12 @@ pub fn create_example_mapping(
let map_to_result = unsafe { mapper.map_to(page, frame, flags, frame_allocator) }; let map_to_result = unsafe { mapper.map_to(page, frame, flags, frame_allocator) };
map_to_result.expect("map_to failed").flush(); map_to_result.expect("map_to failed").flush();
} }
/// A FrameAllocator that always returns `None`.
pub struct EmptyFrameAllocator;
impl FrameAllocator<Size4KiB> for EmptyFrameAllocator {
fn allocate_frame(&mut self) -> Option<PhysFrame> {
None
}
}