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Mark slab as true on sized dealloc fast path.

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For sized dealloc, fastpath only handles lookup-able sizes, which must be slabs.
This commit is contained in:
Qi Wang
2021-11-30 15:58:03 -08:00
committed by Qi Wang
parent af6ee27c0d
commit 7dcf77809c
2 changed files with 17 additions and 4 deletions
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11
include/jemalloc/internal/sc.h
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@@ -248,16 +248,21 @@
/* The largest size class in the lookup table, and its binary log. */
#define SC_LG_MAX_LOOKUP 12
#define SC_LOOKUP_MAXCLASS ((size_t)1 << SC_LG_MAX_LOOKUP)
#define SC_LOOKUP_MAXCLASS (1 << SC_LG_MAX_LOOKUP)
/* Internal, only used for the definition of SC_SMALL_MAXCLASS. */
#define SC_SMALL_MAX_BASE ((size_t)1 << (LG_PAGE + SC_LG_NGROUP - 1))
#define SC_SMALL_MAX_DELTA ((size_t)1 << (LG_PAGE - 1))
#define SC_SMALL_MAX_BASE (1 << (LG_PAGE + SC_LG_NGROUP - 1))
#define SC_SMALL_MAX_DELTA (1 << (LG_PAGE - 1))
/* The largest size class allocated out of a slab. */
#define SC_SMALL_MAXCLASS (SC_SMALL_MAX_BASE \
+ (SC_NGROUP - 1) * SC_SMALL_MAX_DELTA)
/* The fastpath assumes all lookup-able sizes are small. */
#if (SC_SMALL_MAXCLASS < SC_LOOKUP_MAXCLASS)
# error "Lookup table sizes must be small"
#endif
/* The smallest size class not allocated out of a slab. */
#define SC_LARGE_MINCLASS ((size_t)1ULL << (LG_PAGE + SC_LG_NGROUP))
#define SC_LG_LARGE_MINCLASS (LG_PAGE + SC_LG_NGROUP)