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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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7
Kernel/Syscalls/clock.cpp
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@ -17,11 +17,8 @@ KResultOr<FlatPtr> Process::sys$map_time_page()
auto& vmobject = TimeManagement::the().time_page_vmobject();
auto range = address_space().page_directory().range_allocator().allocate_randomized(PAGE_SIZE, PAGE_SIZE);
if (!range.has_value())
return ENOMEM;
auto* region = TRY(address_space().allocate_region_with_vmobject(range.value(), vmobject, 0, "Kernel time page"sv, PROT_READ, true));
auto range = TRY(address_space().page_directory().range_allocator().try_allocate_randomized(PAGE_SIZE, PAGE_SIZE));
auto* region = TRY(address_space().allocate_region_with_vmobject(range, vmobject, 0, "Kernel time page"sv, PROT_READ, true));
return region->vaddr().get();
}