project-base/server-skynet-source-3rd-jemalloc
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Finish arena_prof_ctx_set() optimization.

Browse Source 
Delay reading the mapbits until it's unavoidable.
This commit is contained in:
Jason Evans 2013-12-15 22:08:44 -08:00
parent 6e62984ef6
commit 5fbad0902b
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
include/jemalloc/internal/arena.h
View File

@ -889,7 +889,7 @@ JEMALLOC_INLINE void
arena_prof_ctx_set(const void *ptr, size_t usize, prof_ctx_t *ctx) arena_prof_ctx_set(const void *ptr, size_t usize, prof_ctx_t *ctx)
{ {
arena_chunk_t *chunk; arena_chunk_t *chunk;
size_t pageind, mapbits; size_t pageind;
cassert(config_prof); cassert(config_prof);
assert(ptr != NULL); assert(ptr != NULL);
@ -897,17 +897,17 @@ arena_prof_ctx_set(const void *ptr, size_t usize, prof_ctx_t *ctx)
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
mapbits = arena_mapbits_get(chunk, pageind); assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
assert((mapbits & CHUNK_MAP_ALLOCATED) != 0);
if (usize > SMALL_MAXCLASS || (prof_promote && if (usize > SMALL_MAXCLASS || (prof_promote &&
((uintptr_t)ctx != (uintptr_t)1U || ((mapbits & CHUNK_MAP_LARGE) != ((uintptr_t)ctx != (uintptr_t)1U || arena_mapbits_large_get(chunk,
0)))) { pageind) != 0))) {
assert((mapbits & CHUNK_MAP_LARGE) != 0); assert(arena_mapbits_large_get(chunk, pageind) != 0);
arena_mapp_get(chunk, pageind)->prof_ctx = ctx; arena_mapp_get(chunk, pageind)->prof_ctx = ctx;
} else { } else {
assert((mapbits & CHUNK_MAP_LARGE) == 0); assert(arena_mapbits_large_get(chunk, pageind) == 0);
if (prof_promote == false) { if (prof_promote == false) {
size_t mapbits = arena_mapbits_get(chunk, pageind);
arena_run_t *run = (arena_run_t *)((uintptr_t)chunk + arena_run_t *run = (arena_run_t *)((uintptr_t)chunk +
(uintptr_t)((pageind - (mapbits >> LG_PAGE)) << (uintptr_t)((pageind - (mapbits >> LG_PAGE)) <<
LG_PAGE)); LG_PAGE));