project-base/server-skynet-source-3rd-jemalloc
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Embed root node into rtree_t.

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This avoids one atomic operation per tree access.
This commit is contained in:
Jason Evans
2017-03-22 16:38:03 -07:00
parent 99d68445ef
commit ce41ab0c57
5 changed files with 86 additions and 140 deletions
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2
include/jemalloc/internal/rtree_externs.h
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@@ -23,7 +23,7 @@ static const rtree_level_t rtree_levels[] = {
#endif
};
bool rtree_new(rtree_t *rtree);
bool rtree_new(rtree_t *rtree, bool zeroed);
#ifdef JEMALLOC_JET
typedef rtree_node_elm_t *(rtree_node_alloc_t)(tsdn_t *, rtree_t *, size_t);
extern rtree_node_alloc_t *rtree_node_alloc;

12
include/jemalloc/internal/rtree_structs.h
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@@ -39,13 +39,17 @@ struct rtree_ctx_s {
#ifndef _MSC_VER
JEMALLOC_ALIGNED(CACHELINE)
#endif
rtree_ctx_cache_elm_t cache[RTREE_CTX_NCACHE];
rtree_ctx_cache_elm_t cache[RTREE_CTX_NCACHE];
};
struct rtree_s {
/* An rtree_{internal,leaf}_elm_t *. */
atomic_p_t root;
malloc_mutex_t init_lock;
malloc_mutex_t init_lock;
/* Number of elements based on rtree_levels[0].bits. */
#if RTREE_HEIGHT > 1
rtree_node_elm_t root[1U << (RTREE_NSB/RTREE_HEIGHT)];
#else
rtree_leaf_elm_t root[1U << (RTREE_NSB/RTREE_HEIGHT)];
#endif
};
#endif /* JEMALLOC_INTERNAL_RTREE_STRUCTS_H */