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AK: Prefix CACHE_ALIGNED & SYSTEM_CACHE_ALIGNMENT_SIZE

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Brian Gianforcaro 2022-07-31 13:32:33 -07:00 committed by Linus Groh
parent 5f253988ef
commit ea9ef33a7f
Notes: sideshowbarker 2024-07-17 08:29:20 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/ea9ef33a7f
Pull-request: https://github.com/SerenityOS/serenity/pull/14746
2 changed files with 10 additions and 10 deletions
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14
AK/Platform.h
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@ -126,15 +126,15 @@ extern "C" {
# define CLOCK_REALTIME_COARSE CLOCK_REALTIME
#endif
#ifndef SYSTEM_CACHE_ALIGNMENT_SIZE
#ifndef AK_SYSTEM_CACHE_ALIGNMENT_SIZE
# if ARCH(AARCH64) || ARCH(x86_64)
# define SYSTEM_CACHE_ALIGNMENT_SIZE 64
# define AK_SYSTEM_CACHE_ALIGNMENT_SIZE 64
# else
# define SYSTEM_CACHE_ALIGNMENT_SIZE 128
# define AK_SYSTEM_CACHE_ALIGNMENT_SIZE 128
# endif
#endif /* SYSTEM_CACHE_ALIGNMENT_SIZE */
#endif /* AK_SYSTEM_CACHE_ALIGNMENT_SIZE */
#ifdef CACHE_ALIGNED
# undef CACHE_ALIGNED
#ifdef AK_CACHE_ALIGNED
# undef AK_CACHE_ALIGNED
#endif
#define CACHE_ALIGNED alignas(SYSTEM_CACHE_ALIGNMENT_SIZE)
#define AK_CACHE_ALIGNED alignas(AK_SYSTEM_CACHE_ALIGNMENT_SIZE)

6
Userland/Libraries/LibCore/SharedCircularQueue.h
View file

@ -168,9 +168,9 @@ private:
// A full queue is signalled with: head - 1 mod size = tail mod size (i.e. head and tail point to the same index in the data array)
// FIXME: These invariants aren't proven to be correct after each successful completion of each operation where it is relevant.
// The work could be put in but for now I think the algorithmic correctness proofs of the functions are enough.
CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_tail { 0 };
CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_head { 0 };
CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_head_protector { NumericLimits<size_t>::max() };
AK_CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_tail { 0 };
AK_CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_head { 0 };
AK_CACHE_ALIGNED Atomic<size_t, AK::MemoryOrder::memory_order_seq_cst> m_head_protector { NumericLimits<size_t>::max() };
alignas(ValueType) Array<ValueType, Size> m_data;
};