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50 lines
1.3 KiB
50 lines
1.3 KiB
use super::*;
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use core::any::Any;
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// here may be a interesting part for lab
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pub trait MemoryHandler: Any + Debug + Send + Sync + 'static {
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fn box_clone(&self) -> Box<dyn MemoryHandler>;
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/// Map `addr` in the page table
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/// Should set page flags here instead of in `page_fault_handler`
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fn map(&self, pt: &mut dyn PageTable, addr: VirtAddr, attr: &MemoryAttr);
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/// Unmap `addr` in the page table
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fn unmap(&self, pt: &mut dyn PageTable, addr: VirtAddr);
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/// Clone map `addr` from page table `src_pt` to `pt`.
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fn clone_map(
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&self,
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pt: &mut dyn PageTable,
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src_pt: &mut dyn PageTable,
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addr: VirtAddr,
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attr: &MemoryAttr,
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);
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/// Handle page fault on `addr`
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/// Return true if success, false if error
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fn handle_page_fault(&self, pt: &mut dyn PageTable, addr: VirtAddr) -> bool;
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}
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impl Clone for Box<dyn MemoryHandler> {
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fn clone(&self) -> Box<dyn MemoryHandler> {
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self.box_clone()
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}
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}
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pub trait FrameAllocator: Debug + Clone + Send + Sync + 'static {
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fn alloc(&self) -> Option<PhysAddr>;
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fn dealloc(&self, target: PhysAddr);
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}
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mod byframe;
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mod delay;
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mod file;
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mod linear;
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//mod swap;
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pub use self::byframe::ByFrame;
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pub use self::delay::Delay;
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pub use self::file::{File, MappedFile};
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pub use self::linear::Linear;
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