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Skip iterating through unallocated memory for MonotonePageResource #1189

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merged 2 commits into from
Aug 28, 2024
Merged

Skip iterating through unallocated memory for MonotonePageResource #1189

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Skip iterating through unallocated memory for `MonotonePageResource`
k-sareen Aug 28, 2024
e56a18e
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k-sareen Aug 28, 2024
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8 changes: 7 additions & 1 deletion src/util/heap/monotonepageresource.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -350,7 +350,13 @@ impl<VM: VMBinding> MonotonePageResource<VM> {
} else {
let start = self.discontiguous_start;
self.discontiguous_start = self.pr.vm_map().get_next_contiguous_region(start);
let size = self.pr.vm_map().get_contiguous_region_size(start);
// If the current cursor is within the current discontiguous region (i.e. chunk),
// then return the size till the cursor
let size = if self.pr.cursor().chunk_index() == start.chunk_index() {
self.pr.cursor() - start
} else {
self.pr.vm_map().get_contiguous_region_size(start)
};
Some((start, size))
}
}
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