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Kernel: Make VirtualRangeAllocator return KResultOr<VirtualRange>

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This achieves two things:
- The allocator can report more specific errors
- Callers can (and now do) use TRY() :^)
This commit is contained in:
Andreas Kling 2021-09-05 23:12:16 +02:00
parent 21f7932ae2
commit f4a9a0d561
9 changed files with 82 additions and 95 deletions
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6
Kernel/Memory/AddressSpace.cpp
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@ -131,13 +131,13 @@ KResult AddressSpace::unmap_mmap_range(VirtualAddress addr, size_t size)
return KSuccess;
}
Optional<VirtualRange> AddressSpace::allocate_range(VirtualAddress vaddr, size_t size, size_t alignment)
KResultOr<VirtualRange> AddressSpace::try_allocate_range(VirtualAddress vaddr, size_t size, size_t alignment)
{
vaddr.mask(PAGE_MASK);
size = page_round_up(size);
if (vaddr.is_null())
return page_directory().range_allocator().allocate_anywhere(size, alignment);
return page_directory().range_allocator().allocate_specific(vaddr, size);
return page_directory().range_allocator().try_allocate_anywhere(size, alignment);
return page_directory().range_allocator().try_allocate_specific(vaddr, size);
}
KResultOr<Region*> AddressSpace::try_allocate_split_region(Region const& source_region, VirtualRange const& range, size_t offset_in_vmobject)