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| author | Mattias Andrée <maandree@kth.se> | 2018-11-15 23:41:59 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2018-11-15 23:42:15 +0100 |
| commit | 17e612c5383f9421d12faaaefe6b5e81c9265e6c (patch) | |
| tree | b2ae16ca7144ddf0fe27e8a7d0bd10ea11bd3895 /man3 | |
| parent | libsimple-arg: add test for long options (diff) | |
| download | libsimple-17e612c5383f9421d12faaaefe6b5e81c9265e6c.tar.gz libsimple-17e612c5383f9421d12faaaefe6b5e81c9265e6c.tar.bz2 libsimple-17e612c5383f9421d12faaaefe6b5e81c9265e6c.tar.xz | |
memalloc/arrayalloc: add L1-cache optimisation
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'man3')
| -rw-r--r-- | man3/libsimple_vmemalloc.3 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/man3/libsimple_vmemalloc.3 b/man3/libsimple_vmemalloc.3 index b661f29..e088af2 100644 --- a/man3/libsimple_vmemalloc.3 +++ b/man3/libsimple_vmemalloc.3 @@ -73,6 +73,24 @@ The alignment of the returned pointer should be the page size. By default the alignment is .IR "alignof(max_align_t)" . .TP +.B LIBSIMPLE_MEMALLOC_ALIGNMENT_TO_CACHE_LINE +Align the pointer to the cache line (usuallly 64 bytes), +in addition other specific or default alignment. +.TP +.B LIBSIMPLE_MEMALLOC_ALLOW_CACHE_LINE_SPLITTING +Allow the allocated memory to misaligned to the +cache line such that the memory is stored over +one more cache line than necessary. For example, +if the cache line is 64 bytes and the requested +alignment is 8 bytes, pointer can be aligned to +the cache line or off by 8, 16, 24, 32, 40, 48, +or 56 bytes. If 32 is allocated, an misalignment +to the cache line by 0, 8, 16, 24, or 32 is +normally used, by if +.B LIBSIMPLE_MEMALLOC_ALLOW_CACHE_LINE_SPLITTING +is used, the alignment can be of with 0, 8, 16, +24, 32, 40, 48, or 56 bytes. +.TP .B LIBSIMPLE_MEMALLOC_ROUND_UP_SIZE_TO_ALIGNMENT The number of bytes to allocated should be rounded up to the next multiple of the alignment, unless it already is |