Cheri-research/snmalloc
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Remove cache-friendly offset.

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This commit is contained in:
Matthew Parkinson
2021-05-04 10:03:12 +01:00
committed by Matthew Parkinson
parent f0ebbebf74
commit e77a5d9c58
8 changed files with 29 additions and 132 deletions
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21
src/mem/sizeclasstable.h
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@@ -25,8 +25,6 @@ namespace snmalloc
{
sizeclass_t sizeclass_lookup[sizeclass_lookup_size] = {{}};
ModArray<NUM_SIZECLASSES, size_t> size;
ModArray<NUM_SIZECLASSES, size_t> cache_friendly_mask;
ModArray<NUM_SIZECLASSES, size_t> inverse_cache_friendly_mask;
ModArray<NUM_SMALL_CLASSES, uint16_t> initial_offset_ptr;
ModArray<NUM_SMALL_CLASSES, uint16_t> short_initial_offset_ptr;
ModArray<NUM_SMALL_CLASSES, uint16_t> capacity;
@@ -39,8 +37,6 @@ namespace snmalloc
constexpr SizeClassTable()
: size(),
cache_friendly_mask(),
inverse_cache_friendly_mask(),
initial_offset_ptr(),
short_initial_offset_ptr(),
capacity(),
@@ -77,11 +73,6 @@ namespace snmalloc
sizeclass_lookup[sizeclass_lookup_index(curr)] = sizeclass;
}
}
size_t alignment = bits::min(
bits::one_at_bit(bits::ctz_const(size[sizeclass])), OS_PAGE_SIZE);
cache_friendly_mask[sizeclass] = (alignment - 1);
inverse_cache_friendly_mask[sizeclass] = ~(alignment - 1);
}
size_t header_size = sizeof(Superslab);
@@ -138,18 +129,6 @@ namespace snmalloc
return sizeclass_metadata.size[sizeclass];
}
constexpr static inline size_t
sizeclass_to_cache_friendly_mask(sizeclass_t sizeclass)
{
return sizeclass_metadata.cache_friendly_mask[sizeclass];
}
constexpr static SNMALLOC_FAST_PATH size_t
sizeclass_to_inverse_cache_friendly_mask(sizeclass_t sizeclass)
{
return sizeclass_metadata.inverse_cache_friendly_mask[sizeclass];
}
static inline sizeclass_t size_to_sizeclass(size_t size)
{
if ((size - 1) <= (SLAB_SIZE - 1))