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* malloc/malloc.c: Use all small bin slots on 64-bit archs.

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* malloc/malloc.c (largebin_index): Really have 32 buckets with 64
	sizes.
This commit is contained in:
Ulrich Drepper 2007-05-15 01:51:37 +00:00
parent 1a31b586c4
commit 1d47e92f71
2 changed files with 23 additions and 5 deletions
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5
ChangeLog
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@ -1,6 +1,9 @@
2007-05-14 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c (largebin_index): Really have 32 buckets with 64 sizes.
* malloc/malloc.c: Use all small bin slots on 64-bit archs.
* malloc/malloc.c (largebin_index): Really have 32 buckets with 64
sizes.
2007-05-13 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c [MALLOC_DEBUG]: Keep track of current maximum

23
malloc/malloc.c
View File

@ -2125,15 +2125,16 @@ typedef struct malloc_chunk* mbinptr;
#define NBINS 128
#define NSMALLBINS 64
#define SMALLBIN_WIDTH 8
#define MIN_LARGE_SIZE 512
#define SMALLBIN_WIDTH MALLOC_ALIGNMENT
#define MIN_LARGE_SIZE (NSMALLBINS * SMALLBIN_WIDTH)
#define in_smallbin_range(sz) \
((unsigned long)(sz) < (unsigned long)MIN_LARGE_SIZE)
#define smallbin_index(sz) (((unsigned)(sz)) >> 3)
#define smallbin_index(sz) \
(SMALLBIN_WIDTH == 16 ? (((unsigned)(sz)) >> 4) : (((unsigned)(sz)) >> 3))
#define largebin_index(sz) \
#define largebin_index_32(sz) \
(((((unsigned long)(sz)) >> 6) <= 38)? 56 + (((unsigned long)(sz)) >> 6): \
((((unsigned long)(sz)) >> 9) <= 20)? 91 + (((unsigned long)(sz)) >> 9): \
((((unsigned long)(sz)) >> 12) <= 10)? 110 + (((unsigned long)(sz)) >> 12): \
@ -2141,6 +2142,20 @@ typedef struct malloc_chunk* mbinptr;
((((unsigned long)(sz)) >> 18) <= 2)? 124 + (((unsigned long)(sz)) >> 18): \
126)
// XXX It remains to be seen whether it is good to keep the widths of
// XXX the buckets the same or whether it should be scaled by a factor
// XXX of two as well.
#define largebin_index_64(sz) \
(((((unsigned long)(sz)) >> 6) <= 48)? 48 + (((unsigned long)(sz)) >> 6): \
((((unsigned long)(sz)) >> 9) <= 20)? 91 + (((unsigned long)(sz)) >> 9): \
((((unsigned long)(sz)) >> 12) <= 10)? 110 + (((unsigned long)(sz)) >> 12): \
((((unsigned long)(sz)) >> 15) <= 4)? 119 + (((unsigned long)(sz)) >> 15): \
((((unsigned long)(sz)) >> 18) <= 2)? 124 + (((unsigned long)(sz)) >> 18): \
126)
#define largebin_index(sz) \
(SIZE_SZ == 8 ? largebin_index_64 (sz) : largebin_index_32 (sz))
#define bin_index(sz) \
((in_smallbin_range(sz)) ? smallbin_index(sz) : largebin_index(sz))