Struct os::mm::memory_set::MapArea

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pub struct MapArea {
    vpn_range: SimpleRange<VirtPageNum>,
    data_frames: BTreeMap<VirtPageNum, FrameTracker>,
    map_type: MapType,
    map_perm: MapPermission,
}
Expand description

map area structure, controls a contiguous piece of virtual memory

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§vpn_range: SimpleRange<VirtPageNum>§data_frames: BTreeMap<VirtPageNum, FrameTracker>§map_type: MapType§map_perm: MapPermission

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impl MapArea

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pub fn new( start_va: VirtAddr, end_va: VirtAddr, map_type: MapType, map_perm: MapPermission ) -> Self

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pub fn from_another(another: &Self) -> Self

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pub fn map_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)

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pub fn unmap_one(&mut self, page_table: &mut PageTable, vpn: VirtPageNum)

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pub fn map(&mut self, page_table: &mut PageTable)

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pub fn unmap(&mut self, page_table: &mut PageTable)

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pub fn shrink_to(&mut self, page_table: &mut PageTable, new_end: VirtPageNum)

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pub fn append_to(&mut self, page_table: &mut PageTable, new_end: VirtPageNum)

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pub fn copy_data(&mut self, page_table: &mut PageTable, data: &[u8])

data: start-aligned but maybe with shorter length assume that all frames were cleared before

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