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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/util.c Normal file
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#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"
#include "jemalloc/internal/util.h"
/* Reads the next size pair in a multi-sized option. */
bool
multi_setting_parse_next(const char **setting_segment_cur, size_t *len_left,
size_t *key_start, size_t *key_end, size_t *value) {
const char *cur = *setting_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;
}
*key_start = (size_t)um;
cur = end + 1;
/* Second number, then ':' */
um = malloc_strtoumax(cur, &end, 0);
if (get_errno() != 0 || *end != ':') {
return true;
}
*key_end = (size_t)um;
cur = end + 1;
/* Last number */
um = malloc_strtoumax(cur, &end, 0);
if (get_errno() != 0) {
return true;
}
*value = (size_t)um;
/* Consume the separator if there is one. */
if (*end == '|') {
end++;
}
*len_left -= end - *setting_segment_cur;
*setting_segment_cur = end;
return false;
}