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Convert extent_t's usize to szind.

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Rather than storing usize only for large (and prof-promoted)
allocations, store the size class index for allocations that reside
within the extent, such that the size class index is valid for all
extents that contain extant allocations, and invalid otherwise (mainly
to make debugging simpler).
This commit is contained in:
Jason Evans
2017-03-13 17:36:57 -07:00
parent bda12bd925
commit e8921cf2eb
13 changed files with 233 additions and 238 deletions
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20
include/jemalloc/internal/arena_inlines_b.h
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@@ -147,15 +147,15 @@ arena_dalloc(tsdn_t *tsdn, extent_t *extent, void *ptr, tcache_t *tcache,
extent, ptr);
}
} else {
size_t usize = extent_usize_get(extent);
szind_t szind = extent_szind_get(extent);
if (likely(tcache != NULL) && usize <= tcache_maxclass) {
if (config_prof && unlikely(usize <= SMALL_MAXCLASS)) {
if (likely(tcache != NULL) && szind < nhbins) {
if (config_prof && unlikely(szind < NBINS)) {
arena_dalloc_promoted(tsdn, extent, ptr,
tcache, slow_path);
} else {
tcache_dalloc_large(tsdn_tsd(tsdn), tcache,
ptr, usize, slow_path);
ptr, szind, slow_path);
}
} else {
large_dalloc(tsdn, extent);
@@ -169,25 +169,25 @@ arena_sdalloc(tsdn_t *tsdn, extent_t *extent, void *ptr, size_t size,
assert(!tsdn_null(tsdn) || tcache == NULL);
assert(ptr != NULL);
szind_t szind = size2index(size);
if (likely(extent_slab_get(extent))) {
/* Small allocation. */
if (likely(tcache != NULL)) {
szind_t binind = size2index(size);
assert(binind == extent_slab_data_get(extent)->binind);
tcache_dalloc_small(tsdn_tsd(tsdn), tcache, ptr, binind,
assert(szind == extent_slab_data_get(extent)->binind);
tcache_dalloc_small(tsdn_tsd(tsdn), tcache, ptr, szind,
slow_path);
} else {
arena_dalloc_small(tsdn, extent_arena_get(extent),
extent, ptr);
}
} else {
if (likely(tcache != NULL) && size <= tcache_maxclass) {
if (config_prof && unlikely(size <= SMALL_MAXCLASS)) {
if (likely(tcache != NULL) && szind < nhbins) {
if (config_prof && unlikely(szind < NBINS)) {
arena_dalloc_promoted(tsdn, extent, ptr,
tcache, slow_path);
} else {
tcache_dalloc_large(tsdn_tsd(tsdn), tcache, ptr,
size, slow_path);
szind, slow_path);
}
} else {
large_dalloc(tsdn, extent);