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Access to non-available memory areas #71

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Merged
merged 3 commits into from
Nov 2, 2020
Merged

Access to non-available memory areas #71

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2ac88f7
Add Public Access to All Memory Regions
CalebLBaker Nov 1, 2020
c8f4501
Fix Syntax Error
CalebLBaker Nov 1, 2020
27dc1b6
Leverage filter function to simplify memory_areas implementation
CalebLBaker Nov 2, 2020
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13 changes: 8 additions & 5 deletions src/memory_map.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,12 @@ pub struct MemoryMapTag {

impl MemoryMapTag {
/// Return an iterator over all AVAILABLE marked memory areas.
pub fn memory_areas(&self) -> MemoryAreaIter {
pub fn memory_areas(&self) -> impl Iterator<Item = &MemoryArea> {
self.all_memory_areas().filter(|entry| entry.typ == 1)
}

/// Return an iterator over all marked memory areas.
pub fn all_memory_areas(&self) -> MemoryAreaIter {
let self_ptr = self as *const MemoryMapTag;
let start_area = (&self.first_area) as *const MemoryArea;
MemoryAreaIter {
Expand Down Expand Up @@ -91,7 +96,7 @@ pub enum MemoryAreaType {
Defective,
}

/// An iterator over Available memory areas.
/// An iterator over all memory areas
#[derive(Clone, Debug)]
pub struct MemoryAreaIter<'a> {
current_area: u64,
Expand All @@ -108,9 +113,7 @@ impl<'a> Iterator for MemoryAreaIter<'a> {
} else {
let area = unsafe{&*(self.current_area as *const MemoryArea)};
self.current_area = self.current_area + (self.entry_size as u64);
if area.typ == 1 {
Some(area)
} else {self.next()}
Some(area)
}
}
}
Expand Down