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Remove cache bin dead stores

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This commit is contained in:
Slobodan Predolac 2026-05-26 16:52:56 -07:00
parent 6b24522545
commit f4e31eb86b
2 changed files with 5 additions and 7 deletions
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3
include/jemalloc/internal/cache_bin.h
View file

@ -523,14 +523,13 @@ cache_bin_stash(cache_bin_t *bin, void *ptr) {
/* Get the number of stashed pointers. */
JEMALLOC_ALWAYS_INLINE cache_bin_sz_t
cache_bin_nstashed_get_internal(cache_bin_t *bin) {
cache_bin_sz_t ncached_max = cache_bin_ncached_max_get(bin);
cache_bin_sz_t low_bits_low_bound = cache_bin_low_bits_low_bound_get(
bin);
cache_bin_sz_t n = cache_bin_diff(
bin, low_bits_low_bound, bin->low_bits_full)
/ sizeof(void *);
assert(n <= ncached_max);
assert(n <= cache_bin_ncached_max_get(bin));
if (config_debug && n != 0) {
/* Below are for assertions only. */
void **low_bound = cache_bin_low_bound_get(bin);

9
src/cache_bin.c
View file

@ -10,8 +10,8 @@ const uintptr_t disabled_bin = JUNK_ADDR;
void
cache_bin_info_init(cache_bin_info_t *info, cache_bin_sz_t ncached_max) {
assert(ncached_max <= CACHE_BIN_NCACHED_MAX);
size_t stack_size = (size_t)ncached_max * sizeof(void *);
assert(stack_size < ((size_t)1 << (sizeof(cache_bin_sz_t) * 8)));
assert((size_t)ncached_max * sizeof(void *)
< ((size_t)1 << (sizeof(cache_bin_sz_t) * 8)));
info->ncached_max = (cache_bin_sz_t)ncached_max;
}
@ -94,9 +94,8 @@ cache_bin_init(cache_bin_t *bin, const cache_bin_info_t *info, void *alloc,
bin->low_bits_full = (cache_bin_sz_t)(uintptr_t)full_position;
bin->low_bits_empty = (cache_bin_sz_t)(uintptr_t)empty_position;
cache_bin_info_init(&bin->bin_info, info->ncached_max);
cache_bin_sz_t free_spots = cache_bin_diff(bin, bin->low_bits_full,
(cache_bin_sz_t)(uintptr_t)bin->stack_head);
assert(free_spots == bin_stack_size);
assert(cache_bin_diff(bin, bin->low_bits_full,
(cache_bin_sz_t)(uintptr_t)bin->stack_head) == bin_stack_size);
if (!cache_bin_disabled(bin)) {
assert(cache_bin_ncached_get_local(bin) == 0);
}