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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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13
src/stats.c
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@@ -42,15 +42,18 @@ const char *arena_mutex_names[mutex_prof_num_arena_mutexes] = {
assert(miblen_new == miblen + 1); \
} while (0)
#define CTL_M2_GET(n, i, v, t) do { \
#define CTL_MIB_GET(n, i, v, t, ind) do { \
size_t mib[CTL_MAX_DEPTH]; \
size_t miblen = sizeof(mib) / sizeof(size_t); \
size_t sz = sizeof(t); \
xmallctlnametomib(n, mib, &miblen); \
mib[2] = (i); \
mib[(ind)] = (i); \
xmallctlbymib(mib, miblen, (void *)v, &sz, NULL, 0); \
} while (0)
#define CTL_M1_GET(n, i, v, t) CTL_MIB_GET(n, i, v, t, 1)
#define CTL_M2_GET(n, i, v, t) CTL_MIB_GET(n, i, v, t, 2)
/******************************************************************************/
/* Data. */
@@ -1042,6 +1045,8 @@ JEMALLOC_COLD
static void
stats_arena_print(emitter_t *emitter, unsigned i, bool bins, bool large,
bool mutex, bool extents, bool hpa) {
char name[ARENA_NAME_LEN];
char *namep = name;
unsigned nthreads;
const char *dss;
ssize_t dirty_decay_ms, muzzy_decay_ms;
@@ -1059,6 +1064,10 @@ stats_arena_print(emitter_t *emitter, unsigned i, bool bins, bool large,
uint64_t uptime;
CTL_GET("arenas.page", &page, size_t);
if (i != MALLCTL_ARENAS_ALL && i != MALLCTL_ARENAS_DESTROYED) {
CTL_M1_GET("arena.0.name", i, (void *)&namep, const char *);
emitter_kv(emitter, "name", "name", emitter_type_string, &namep);
}
CTL_M2_GET("stats.arenas.0.nthreads", i, &nthreads, unsigned);
emitter_kv(emitter, "nthreads", "assigned threads",