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Add arena-level name.

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An arena-level name can help identify manual arenas.
This commit is contained in:
Guangli Dai 2022-09-01 16:42:56 -07:00 • committed by Qi Wang
parent a0734fd6ee
commit ba19d2cb78
8 changed files with 146 additions and 9 deletions
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21
src/arena.c
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@ -1547,6 +1547,22 @@ arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec) {
return false;
}
void
arena_name_get(arena_t *arena, char *name) {
char *end = (char *)memchr((void *)arena->name, '\0', ARENA_NAME_LEN);
assert(end != NULL);
size_t len = (uintptr_t)end - (uintptr_t)arena->name + 1;
assert(len > 0 && len <= ARENA_NAME_LEN);
strncpy(name, arena->name, len);
}
void
arena_name_set(arena_t *arena, const char *name) {
strncpy(arena->name, name, ARENA_NAME_LEN);
arena->name[ARENA_NAME_LEN - 1] = '\0';
}
ssize_t
arena_dirty_decay_ms_default_get(void) {
return atomic_load_zd(&dirty_decay_ms_default, ATOMIC_RELAXED);
@ -1670,6 +1686,11 @@ arena_new(tsdn_t *tsdn, unsigned ind, const arena_config_t *config) {
arena_set(ind, arena);
arena->ind = ind;
/* Init the name. */
malloc_snprintf(arena->name, sizeof(arena->name), "%s_%u",
arena_is_auto(arena) ? "auto" : "manual", arena->ind);
arena->name[ARENA_NAME_LEN - 1] = '\0';
nstime_init_update(&arena->create_time);
/*