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53 lines
1.1 KiB
53 lines
1.1 KiB
use super::address::PhysAddr;
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pub const PAGE_SIZE: usize = 4096;
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#[derive(Debug, PartialEq, Eq, PartialOrd, Ord)]
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pub struct Frame {
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pub(super) number: usize,
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}
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impl Frame {
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pub fn of_addr(address: usize) -> Frame {
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Frame{ number: address / PAGE_SIZE }
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}
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//TODO: Set private
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pub fn start_address(&self) -> PhysAddr {
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PhysAddr((self.number * PAGE_SIZE) as u64)
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}
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pub fn clone(&self) -> Frame {
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Frame { number: self.number }
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}
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//TODO: Set private
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pub fn range_inclusive(start: Frame, end: Frame) -> FrameIter {
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FrameIter {
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start,
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end,
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}
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}
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}
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pub struct FrameIter {
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start: Frame,
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end: Frame,
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}
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impl Iterator for FrameIter {
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type Item = Frame;
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fn next(&mut self) -> Option<Frame> {
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if self.start <= self.end {
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let frame = self.start.clone();
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self.start.number += 1;
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Some(frame)
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} else {
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None
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}
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}
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}
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pub trait FrameAllocator {
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fn allocate_frame(&mut self) -> Option<Frame>;
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fn deallocate_frame(&mut self, frame: Frame);
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} |