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Kernel: Add RegionTree::find_region_containing(address or range)

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Let's encapsulate looking up regions so clients don't have to dig into
RegionTree internals.
This commit is contained in:
Andreas Kling 2022-04-05 12:07:45 +02:00
parent da7ea2556e
commit cfb61cbd54
4 changed files with 25 additions and 15 deletions
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18
Kernel/Memory/RegionTree.cpp
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@ -170,4 +170,22 @@ bool RegionTree::remove(Region& region)
return m_regions.remove(region.range().base().get());
}
Region* RegionTree::find_region_containing(VirtualAddress address)
{
SpinlockLocker locker(m_lock);
auto* region = m_regions.find_largest_not_above(address.get());
if (!region || !region->contains(address))
return nullptr;
return region;
}
Region* RegionTree::find_region_containing(VirtualRange range)
{
SpinlockLocker lock(m_lock);
auto* region = m_regions.find_largest_not_above(range.base().get());
if (!region || !region->contains(range))
return nullptr;
return region;
}
}