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Implement pz2ind(), pind2sz(), and psz2u().

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These compute size classes and indices similarly to size2index(),
index2size() and s2u(), respectively, but using the subset of size
classes that are multiples of the page size.  Note that pszind_t and
szind_t are not interchangeable.
This commit is contained in:
Jason Evans 2016-04-17 16:16:11 -07:00
parent bcd5424b1c
commit 1abb49f09d
6 changed files with 202 additions and 27 deletions
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4
src/arena.c
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@ -3711,7 +3711,7 @@ bin_info_init(void)
bin_info_run_size_calc(bin_info); \
bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs);
#define BIN_INFO_INIT_bin_no(index, size)
#define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \
#define SC(index, lg_grp, lg_delta, ndelta, psz, bin, lg_delta_lookup) \
BIN_INFO_INIT_bin_##bin(index, (ZU(1)<<lg_grp) + (ZU(ndelta)<<lg_delta))
SIZE_CLASSES
#undef BIN_INFO_INIT_bin_yes
@ -3735,7 +3735,7 @@ small_run_size_init(void)
small_run_tab[bin_info->run_size >> LG_PAGE] = true; \
}
#define TAB_INIT_bin_no(index, size)
#define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \
#define SC(index, lg_grp, lg_delta, ndelta, psz, bin, lg_delta_lookup) \
TAB_INIT_bin_##bin(index, (ZU(1)<<lg_grp) + (ZU(ndelta)<<lg_delta))
SIZE_CLASSES
#undef TAB_INIT_bin_yes

4
src/jemalloc.c
View file

@ -88,7 +88,7 @@ static uint8_t malloc_slow_flags;
/* Last entry for overflow detection only. */
JEMALLOC_ALIGNED(CACHELINE)
const size_t index2size_tab[NSIZES+1] = {
#define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \
#define SC(index, lg_grp, lg_delta, ndelta, psz, bin, lg_delta_lookup) \
((ZU(1)<<lg_grp) + (ZU(ndelta)<<lg_delta)),
SIZE_CLASSES
#undef SC
@ -161,7 +161,7 @@ const uint8_t size2index_tab[] = {
#define S2B_11(i) S2B_10(i) S2B_10(i)
#endif
#define S2B_no(i)
#define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \
#define SC(index, lg_grp, lg_delta, ndelta, psz, bin, lg_delta_lookup) \
S2B_##lg_delta_lookup(index)
SIZE_CLASSES
#undef S2B_3