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authorMattias Andrée <maandree@kth.se>2018-11-15 23:41:59 +0100
committerMattias Andrée <maandree@kth.se>2018-11-15 23:42:15 +0100
commit17e612c5383f9421d12faaaefe6b5e81c9265e6c (patch)
treeb2ae16ca7144ddf0fe27e8a7d0bd10ea11bd3895 /man3/libsimple_vmemalloc.3
parentlibsimple-arg: add test for long options (diff)
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memalloc/arrayalloc: add L1-cache optimisation
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to '')
-rw-r--r--man3/libsimple_vmemalloc.318
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