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Kernel: Make Memory::RingBuffer construction fallible

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This commit is contained in:
Idan Horowitz 2022-01-20 21:10:46 +02:00 • committed by Andreas Kling
parent 9eccd4c56e
commit d65347d39d
4 changed files with 17 additions and 8 deletions
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11
Kernel/Memory/RingBuffer.cpp
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@ -10,8 +10,15 @@
namespace Kernel::Memory {
RingBuffer::RingBuffer(StringView region_name, size_t capacity)
: m_region(MM.allocate_contiguous_kernel_region(page_round_up(capacity).release_value_but_fixme_should_propagate_errors(), region_name, Region::Access::Read | Region::Access::Write).release_value())
ErrorOr<NonnullOwnPtr<RingBuffer>> RingBuffer::try_create(StringView region_name, size_t capacity)
{
auto region_size = TRY(page_round_up(capacity));
auto region = TRY(MM.allocate_contiguous_kernel_region(region_size, region_name, Region::Access::Read | Region::Access::Write));
return adopt_nonnull_own_or_enomem(new (nothrow) RingBuffer(move(region), capacity));
}
RingBuffer::RingBuffer(NonnullOwnPtr<Memory::Region> region, size_t capacity)
: m_region(move(region))
, m_capacity_in_bytes(capacity)
{
}