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branches/zip: Add UNIV_UNLIKELY hints to help branch prediction.

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marko 2007-10-26 12:31:48 +00:00
parent a4b26c4ffb
commit 021fea8f15
2 changed files with 3 additions and 3 deletions
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4
include/ut0lst.h
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@ -73,12 +73,12 @@ the pointer to the node to be added to the list. NAME is the list name. */
((BASE).count)++;\ ((BASE).count)++;\
((N)->NAME).next = (BASE).start;\ ((N)->NAME).next = (BASE).start;\
((N)->NAME).prev = NULL;\ ((N)->NAME).prev = NULL;\
if ((BASE).start != NULL) {\ if (UNIV_LIKELY((BASE).start != NULL)) {\
ut_ad((BASE).start != (N));\ ut_ad((BASE).start != (N));\
(((BASE).start)->NAME).prev = (N);\ (((BASE).start)->NAME).prev = (N);\
}\ }\
(BASE).start = (N);\ (BASE).start = (N);\
if ((BASE).end == NULL) {\ if (UNIV_UNLIKELY((BASE).end == NULL)) {\
(BASE).end = (N);\ (BASE).end = (N);\
}\ }\
}\ }\

2
rem/rem0rec.c
View file

@ -533,7 +533,7 @@ rec_get_offsets_func(
if (UNIV_UNLIKELY(!offsets) if (UNIV_UNLIKELY(!offsets)
|| UNIV_UNLIKELY(rec_offs_get_n_alloc(offsets) < size)) { || UNIV_UNLIKELY(rec_offs_get_n_alloc(offsets) < size)) {
if (!*heap) { if (UNIV_UNLIKELY(!*heap)) {
*heap = mem_heap_create_func(size * sizeof(ulint), *heap = mem_heap_create_func(size * sizeof(ulint),
MEM_HEAP_DYNAMIC, MEM_HEAP_DYNAMIC,
file, line); file, line);