project-base/server-skynet-source-3rd-jemalloc
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Prefer old/low extent_t structures during reuse.

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Rather than using a LIFO queue to track available extent_t structures,
use a red-black tree, and always choose the oldest/lowest available
during reuse.
This commit is contained in:
Jason Evans
2017-04-16 22:31:16 -07:00
parent 76b35f4b2f
commit 881fbf762f
10 changed files with 80 additions and 37 deletions
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31
include/jemalloc/internal/extent_inlines.h
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@@ -53,8 +53,10 @@ void extent_list_replace(extent_list_t *list, extent_t *to_remove,
extent_t *to_insert);
void extent_list_remove(extent_list_t *list, extent_t *extent);
int extent_sn_comp(const extent_t *a, const extent_t *b);
int extent_esn_comp(const extent_t *a, const extent_t *b);
int extent_ad_comp(const extent_t *a, const extent_t *b);
int extent_snad_comp(const extent_t *a, const extent_t *b);
int extent_esnead_comp(const extent_t *a, const extent_t *b);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_EXTENT_C_))
@@ -378,6 +380,14 @@ extent_sn_comp(const extent_t *a, const extent_t *b) {
return (a_sn > b_sn) - (a_sn < b_sn);
}
JEMALLOC_INLINE int
extent_esn_comp(const extent_t *a, const extent_t *b) {
size_t a_esn = extent_esn_get(a);
size_t b_esn = extent_esn_get(b);
return (a_esn > b_esn) - (a_esn < b_esn);
}
JEMALLOC_INLINE int
extent_ad_comp(const extent_t *a, const extent_t *b) {
uintptr_t a_addr = (uintptr_t)extent_addr_get(a);
@@ -386,6 +396,14 @@ extent_ad_comp(const extent_t *a, const extent_t *b) {
return (a_addr > b_addr) - (a_addr < b_addr);
}
JEMALLOC_INLINE int
extent_ead_comp(const extent_t *a, const extent_t *b) {
uintptr_t a_eaddr = (uintptr_t)a;
uintptr_t b_eaddr = (uintptr_t)b;
return (a_eaddr > b_eaddr) - (a_eaddr < b_eaddr);
}
JEMALLOC_INLINE int
extent_snad_comp(const extent_t *a, const extent_t *b) {
int ret;
@@ -398,6 +416,19 @@ extent_snad_comp(const extent_t *a, const extent_t *b) {
ret = extent_ad_comp(a, b);
return ret;
}
JEMALLOC_INLINE int
extent_esnead_comp(const extent_t *a, const extent_t *b) {
int ret;
ret = extent_esn_comp(a, b);
if (ret != 0) {
return ret;
}
ret = extent_ead_comp(a, b);
return ret;
}
#endif
#endif /* JEMALLOC_INTERNAL_EXTENT_INLINES_H */