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Add mallctl to set and get ncached_max of each cache_bin.

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1. `thread_tcache_ncached_max_read_sizeclass` allows users to get the
    ncached_max of the bin with the input sizeclass, passed in through
    oldp (will be upper casted if not an exact bin size is given).
2. `thread_tcache_ncached_max_write` takes in a char array
    representing the settings for bins in the tcache.
This commit is contained in:
guangli-dai 2023-09-19 14:37:09 -07:00 • committed by Qi Wang
parent 6b197fdd46
commit 630f7de952
14 changed files with 477 additions and 70 deletions
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49
src/jemalloc.c
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@ -821,50 +821,6 @@ init_opt_stats_opts(const char *v, size_t vlen, char *dest) {
assert(opts_len == strlen(dest));
}
/* Reads the next size pair in a multi-sized option. */
static bool
malloc_conf_multi_sizes_next(const char **slab_size_segment_cur,
size_t *vlen_left, size_t *slab_start, size_t *slab_end, size_t *new_size) {
const char *cur = *slab_size_segment_cur;
char *end;
uintmax_t um;
set_errno(0);
/* First number, then '-' */
um = malloc_strtoumax(cur, &end, 0);
if (get_errno() != 0 || *end != '-') {
return true;
}
*slab_start = (size_t)um;
cur = end + 1;
/* Second number, then ':' */
um = malloc_strtoumax(cur, &end, 0);
if (get_errno() != 0 || *end != ':') {
return true;
}
*slab_end = (size_t)um;
cur = end + 1;
/* Last number */
um = malloc_strtoumax(cur, &end, 0);
if (get_errno() != 0) {
return true;
}
*new_size = (size_t)um;
/* Consume the separator if there is one. */
if (*end == '|') {
end++;
}
*vlen_left -= end - *slab_size_segment_cur;
*slab_size_segment_cur = end;
return false;
}
static void
malloc_conf_format_error(const char *msg, const char *begin, const char *end) {
size_t len = end - begin + 1;
@ -1351,7 +1307,7 @@ malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
size_t size_start;
size_t size_end;
size_t nshards;
bool err = malloc_conf_multi_sizes_next(
bool err = multi_setting_parse_next(
&bin_shards_segment_cur, &vlen_left,
&size_start, &size_end, &nshards);
if (err || bin_update_shard_size(
@ -1613,7 +1569,7 @@ malloc_conf_init_helper(sc_data_t *sc_data, unsigned bin_shard_sizes[SC_NBINS],
size_t slab_start;
size_t slab_end;
size_t pgs;
err = malloc_conf_multi_sizes_next(
err = multi_setting_parse_next(
&slab_size_segment_cur,
&vlen_left, &slab_start, &slab_end,
&pgs);
@ -4140,6 +4096,7 @@ batch_alloc(void **ptrs, size_t num, size_t size, int flags) {
tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind,
/* slow */ true, /* is_alloc */ true);
if (likely(tcache != NULL &&
ind < tcache_nbins_get(tcache->tcache_slow) &&
!tcache_bin_disabled(ind, &tcache->bins[ind],
tcache->tcache_slow)) && progress < batch) {
if (bin == NULL) {