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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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9
Kernel/Thread.cpp
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@ -1190,13 +1190,10 @@ KResult Thread::make_thread_specific_region(Badge<Process>)
if (!process().m_master_tls_region)
return KSuccess;
auto range = process().address_space().allocate_range({}, thread_specific_region_size());
if (!range.has_value())
return ENOMEM;
auto range = TRY(process().address_space().try_allocate_range({}, thread_specific_region_size()));
auto* region = TRY(process().address_space().allocate_region(range, "Thread-specific", PROT_READ | PROT_WRITE));
auto* region = TRY(process().address_space().allocate_region(range.value(), "Thread-specific", PROT_READ | PROT_WRITE));
m_thread_specific_range = range.value();
m_thread_specific_range = range;
SmapDisabler disabler;
auto* thread_specific_data = (ThreadSpecificData*)region->vaddr().offset(align_up_to(process().m_master_tls_size, thread_specific_region_alignment())).as_ptr();