project-base/server-skynet-source-3rd-jemalloc
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mark huge allocations as unlikely

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This cleans up the fast path a bit more by moving away more code.
This commit is contained in:
Daniel Micay
2014-10-23 10:30:52 -04:00
committed by Jason Evans
parent c93ed81cd0
commit 809b0ac391
4 changed files with 16 additions and 16 deletions
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4
src/arena.c
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@@ -2095,7 +2095,7 @@ arena_ralloc_large(void *ptr, size_t oldsize, size_t size, size_t extra,
size_t usize;
/* Make sure extra can't cause size_t overflow. */
if (extra >= arena_maxclass)
if (unlikely(extra >= arena_maxclass))
return (true);
usize = s2u(size + extra);
@@ -2142,7 +2142,7 @@ arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size, size_t extra,
/*
* Avoid moving the allocation if the size class can be left the same.
*/
if (oldsize <= arena_maxclass) {
if (likely(oldsize <= arena_maxclass)) {
if (oldsize <= SMALL_MAXCLASS) {
assert(arena_bin_info[size2index(oldsize)].reg_size
== oldsize);

4
src/jemalloc.c
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@@ -264,7 +264,7 @@ a0alloc(size_t size, bool zero)
if (size == 0)
size = 1;
if (size <= arena_maxclass)
if (likely(size <= arena_maxclass))
ret = arena_malloc(NULL, a0get(), size, zero, false);
else
ret = huge_malloc(NULL, a0get(), size, zero, false);
@@ -295,7 +295,7 @@ a0free(void *ptr)
return;
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
if (chunk != ptr)
if (likely(chunk != ptr))
arena_dalloc(NULL, chunk, ptr, false);
else
huge_dalloc(NULL, ptr, false);