#define JEMALLOC_STATS_C_
#include "jemalloc/internal/jemalloc_preamble.h"
#include "jemalloc/internal/jemalloc_internal_includes.h"
#include "jemalloc/internal/assert.h"
#include "jemalloc/internal/ctl.h"
#include "jemalloc/internal/mutex_prof.h"
const char *global_mutex_names[mutex_prof_num_global_mutexes] = {
#define OP(mtx) #mtx,
MUTEX_PROF_GLOBAL_MUTEXES
#undef OP
};
const char *arena_mutex_names[mutex_prof_num_arena_mutexes] = {
#define OP(mtx) #mtx,
MUTEX_PROF_ARENA_MUTEXES
#undef OP
};
#define CTL_GET(n, v, t) do { \
size_t sz = sizeof(t); \
xmallctl(n, (void *)v, &sz, NULL, 0); \
} while (0)
#define CTL_M2_GET(n, i, v, t) 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); \
xmallctlbymib(mib, miblen, (void *)v, &sz, NULL, 0); \
} while (0)
#define CTL_M2_M4_GET(n, i, j, v, t) 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[4] = (j); \
xmallctlbymib(mib, miblen, (void *)v, &sz, NULL, 0); \
} while (0)
/******************************************************************************/
/* Data. */
bool opt_stats_print = false;
/******************************************************************************/
/* Calculate x.yyy and output a string (takes a fixed sized char array). */
static bool
get_rate_str(uint64_t dividend, uint64_t divisor, char str[6]) {
if (divisor == 0 || dividend > divisor) {
/* The rate is not supposed to be greater than 1. */
return true;
}
if (dividend > 0) {
assert(UINT64_MAX / dividend >= 1000);
}
unsigned n = (unsigned)((dividend * 1000) / divisor);
if (n < 10) {
malloc_snprintf(str, 6, "0.00%u", n);
} else if (n < 100) {
malloc_snprintf(str, 6, "0.0%u", n);
} else if (n < 1000) {
malloc_snprintf(str, 6, "0.%u", n);
} else {
malloc_snprintf(str, 6, "1");
}
return false;
}
#define MUTEX_CTL_STR_MAX_LENGTH 128
static void
gen_mutex_ctl_str(char *str, size_t buf_len, const char *prefix,
const char *mutex, const char *counter) {
malloc_snprintf(str, buf_len, "stats.%s.%s.%s", prefix, mutex, counter);
}
static void
read_arena_bin_mutex_stats(unsigned arena_ind, unsigned bin_ind,
uint64_t results[mutex_prof_num_counters]) {
char cmd[MUTEX_CTL_STR_MAX_LENGTH];
#define OP(c, t) \
gen_mutex_ctl_str(cmd, MUTEX_CTL_STR_MAX_LENGTH, \
"arenas.0.bins.0","mutex", #c); \
CTL_M2_M4_GET(cmd, arena_ind, bin_ind, \
(t *)&results[mutex_counter_##c], t);
MUTEX_PROF_COUNTERS
#undef OP
}
static void
mutex_stats_output_json(void (*write_cb)(void *, const char *), void *cbopaque,
const char *name, uint64_t stats[mutex_prof_num_counters],
const char *json_indent, bool last) {
malloc_cprintf(write_cb, cbopaque, "%s\"%s\": {\n", json_indent, name);
mutex_prof_counter_ind_t k = 0;
char *fmt_str[2] = {"%s\t\"%s\": %"FMTu32"%s\n",
"%s\t\"%s\": %"FMTu64"%s\n"};
#define OP(c, t) \
malloc_cprintf(write_cb, cbopaque, \
fmt_str[sizeof(t) / sizeof(uint32_t) - 1], \
json_indent, #c, (t)stats[mutex_counter_##c], \
(++k == mutex_prof_num_counters) ? "" : ",");
MUTEX_PROF_COUNTERS
#undef OP
malloc_cprintf(write_cb, cbopaque, "%s}%s\n", json_indent,
last ? "" : ",");
}
static void
stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque,
bool json, bool large, bool mutex, unsigned i) {
size_t page;
bool in_gap, in_gap_prev;
unsigned nbins, j;
CTL_GET("arenas.page", &page, size_t);
CTL_GET("arenas.nbins", &nbins, unsigned);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"bins\": [\n");
} else {
char *mutex_counters = " n_lock_ops n_waiting"
" n_spin_acq max_wait_ns\n";
malloc_cprintf(write_cb, cbopaque,
"bins: size ind allocated nmalloc"
" ndalloc nrequests curregs curslabs regs"
" pgs util nfills nflushes newslabs"
" reslabs%s", mutex ? mutex_counters : "\n");
}
for (j = 0, in_gap = false; j < nbins; j++) {
uint64_t nslabs;
size_t reg_size, slab_size, curregs;
size_t curslabs;
uint32_t nregs;
uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes;
uint64_t nreslabs;
CTL_M2_M4_GET("stats.arenas.0.bins.0.nslabs", i, j, &nslabs,
uint64_t);
in_gap_prev = in_gap;
in_gap = (nslabs == 0);
if (!json && in_gap_prev && !in_gap) {
malloc_cprintf(write_cb, cbopaque,
" ---\n");
}
CTL_M2_GET("arenas.bin.0.size", j, ®_size, size_t);
CTL_M2_GET("arenas.bin.0.nregs", j, &nregs, uint32_t);
CTL_M2_GET("arenas.bin.0.slab_size", j, &slab_size, size_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.nmalloc", i, j, &nmalloc,
uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.ndalloc", i, j, &ndalloc,
uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.curregs", i, j, &curregs,
size_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.nrequests", i, j,
&nrequests, uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.nfills", i, j, &nfills,
uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.nflushes", i, j, &nflushes,
uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.nreslabs", i, j, &nreslabs,
uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.curslabs", i, j, &curslabs,
size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t{\n"
"\t\t\t\t\t\t\"nmalloc\": %"FMTu64",\n"
"\t\t\t\t\t\t\"ndalloc\": %"FMTu64",\n"
"\t\t\t\t\t\t\"curregs\": %zu,\n"
"\t\t\t\t\t\t\"nrequests\": %"FMTu64",\n"
"\t\t\t\t\t\t\"nfills\": %"FMTu64",\n"
"\t\t\t\t\t\t\"nflushes\": %"FMTu64",\n"
"\t\t\t\t\t\t\"nreslabs\": %"FMTu64",\n"
"\t\t\t\t\t\t\"curslabs\": %zu%s\n",
nmalloc, ndalloc, curregs, nrequests, nfills,
nflushes, nreslabs, curslabs, mutex ? "," : "");
if (mutex) {
uint64_t mutex_stats[mutex_prof_num_counters];
read_arena_bin_mutex_stats(i, j, mutex_stats);
mutex_stats_output_json(write_cb, cbopaque,
"mutex", mutex_stats, "\t\t\t\t\t\t", true);
}
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t}%s\n",
(j + 1 < nbins) ? "," : "");
} else if (!in_gap) {
size_t availregs = nregs * curslabs;
char util[6];
if (get_rate_str((uint64_t)curregs, (uint64_t)availregs,
util)) {
if (availregs == 0) {
malloc_snprintf(util, sizeof(util),
"1");
} else if (curregs > availregs) {
/*
* Race detected: the counters were read
* in separate mallctl calls and
* concurrent operations happened in
* between. In this case no meaningful
* utilization can be computed.
*/
malloc_snprintf(util, sizeof(util),
" race");
} else {
not_reached();
}
}
/* Output less info for bin mutexes to save space. */
uint64_t num_ops, num_wait, max_wait;
CTL_M2_M4_GET("stats.arenas.0.bins.0.mutex.num_wait",
i, j, &num_wait, uint64_t);
CTL_M2_M4_GET(
"stats.arenas.0.bins.0.mutex.max_wait_time", i, j,
&max_wait, uint64_t);
CTL_M2_M4_GET("stats.arenas.0.bins.0.mutex.num_ops",
i, j, &num_ops, uint64_t);
uint64_t mutex_stats[mutex_prof_num_counters];
if (mutex) {
read_arena_bin_mutex_stats(i, j, mutex_stats);
}
char rate[6];
if (get_rate_str(num_wait, num_ops, rate)) {
if (num_ops == 0) {
malloc_snprintf(rate, sizeof(rate),
"0");
}
}
malloc_cprintf(write_cb, cbopaque, "%20zu %3u %12zu %12"
FMTu64" %12"FMTu64" %12"FMTu64" %12zu %12zu %4u"
" %3zu %-5s %12"FMTu64" %12"FMTu64" %12"FMTu64
" %12"FMTu64, reg_size, j, curregs * reg_size,
nmalloc, ndalloc, nrequests, curregs, curslabs,
nregs, slab_size / page, util, nfills, nflushes,
nslabs, nreslabs);
if (mutex) {
malloc_cprintf(write_cb, cbopaque,
" %12"FMTu64" %12"FMTu64" %12"FMTu64
" %12"FMTu64"\n",
mutex_stats[mutex_counter_num_ops],
mutex_stats[mutex_counter_num_wait],
mutex_stats[mutex_counter_num_spin_acq],
mutex_stats[mutex_counter_max_wait_time]);
} else {
malloc_cprintf(write_cb, cbopaque, "\n");
}
}
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t]%s\n", large ? "," : "");
} else {
if (in_gap) {
malloc_cprintf(write_cb, cbopaque,
" ---\n");
}
}
}
static void
stats_arena_lextents_print(void (*write_cb)(void *, const char *),
void *cbopaque, bool json, unsigned i) {
unsigned nbins, nlextents, j;
bool in_gap, in_gap_prev;
CTL_GET("arenas.nbins", &nbins, unsigned);
CTL_GET("arenas.nlextents", &nlextents, unsigned);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"lextents\": [\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"large: size ind allocated nmalloc"
" ndalloc nrequests curlextents\n");
}
for (j = 0, in_gap = false; j < nlextents; j++) {
uint64_t nmalloc, ndalloc, nrequests;
size_t lextent_size, curlextents;
CTL_M2_M4_GET("stats.arenas.0.lextents.0.nmalloc", i, j,
&nmalloc, uint64_t);
CTL_M2_M4_GET("stats.arenas.0.lextents.0.ndalloc", i, j,
&ndalloc, uint64_t);
CTL_M2_M4_GET("stats.arenas.0.lextents.0.nrequests", i, j,
&nrequests, uint64_t);
in_gap_prev = in_gap;
in_gap = (nrequests == 0);
if (!json && in_gap_prev && !in_gap) {
malloc_cprintf(write_cb, cbopaque,
" ---\n");
}
CTL_M2_GET("arenas.lextent.0.size", j, &lextent_size, size_t);
CTL_M2_M4_GET("stats.arenas.0.lextents.0.curlextents", i, j,
&curlextents, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t{\n"
"\t\t\t\t\t\t\"curlextents\": %zu\n"
"\t\t\t\t\t}%s\n",
curlextents,
(j + 1 < nlextents) ? "," : "");
} else if (!in_gap) {
malloc_cprintf(write_cb, cbopaque,
"%20zu %3u %12zu %12"FMTu64" %12"FMTu64
" %12"FMTu64" %12zu\n",
lextent_size, nbins + j,
curlextents * lextent_size, nmalloc, ndalloc,
nrequests, curlextents);
}
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t]\n");
} else {
if (in_gap) {
malloc_cprintf(write_cb, cbopaque,
" ---\n");
}
}
}
static void
read_arena_mutex_stats(unsigned arena_ind,
uint64_t results[mutex_prof_num_arena_mutexes][mutex_prof_num_counters]) {
char cmd[MUTEX_CTL_STR_MAX_LENGTH];
mutex_prof_arena_ind_t i;
for (i = 0; i < mutex_prof_num_arena_mutexes; i++) {
#define OP(c, t) \
gen_mutex_ctl_str(cmd, MUTEX_CTL_STR_MAX_LENGTH, \
"arenas.0.mutexes", arena_mutex_names[i], #c); \
CTL_M2_GET(cmd, arena_ind, \
(t *)&results[i][mutex_counter_##c], t);
MUTEX_PROF_COUNTERS
#undef OP
}
}
static void
mutex_stats_output(void (*write_cb)(void *, const char *), void *cbopaque,
const char *name, uint64_t stats[mutex_prof_num_counters],
bool first_mutex) {
if (first_mutex) {
/* Print title. */
malloc_cprintf(write_cb, cbopaque,
" n_lock_ops n_waiting"
" n_spin_acq n_owner_switch total_wait_ns"
" max_wait_ns max_n_thds\n");
}
malloc_cprintf(write_cb, cbopaque, "%s", name);
malloc_cprintf(write_cb, cbopaque, ":%*c",
(int)(20 - strlen(name)), ' ');
char *fmt_str[2] = {"%12"FMTu32, "%16"FMTu64};
#define OP(c, t) \
malloc_cprintf(write_cb, cbopaque, \
fmt_str[sizeof(t) / sizeof(uint32_t) - 1], \
(t)stats[mutex_counter_##c]);
MUTEX_PROF_COUNTERS
#undef OP
malloc_cprintf(write_cb, cbopaque, "\n");
}
static void
stats_arena_mutexes_print(void (*write_cb)(void *, const char *),
void *cbopaque, bool json, bool json_end, unsigned arena_ind) {
uint64_t mutex_stats[mutex_prof_num_arena_mutexes][mutex_prof_num_counters];
read_arena_mutex_stats(arena_ind, mutex_stats);
/* Output mutex stats. */
if (json) {
malloc_cprintf(write_cb, cbopaque, "\t\t\t\t\"mutexes\": {\n");
mutex_prof_arena_ind_t i, last_mutex;
last_mutex = mutex_prof_num_arena_mutexes - 1;
for (i = 0; i < mutex_prof_num_arena_mutexes; i++) {
mutex_stats_output_json(write_cb, cbopaque,
arena_mutex_names[i], mutex_stats[i],
"\t\t\t\t\t", (i == last_mutex));
}
malloc_cprintf(write_cb, cbopaque, "\t\t\t\t}%s\n",
json_end ? "" : ",");
} else {
mutex_prof_arena_ind_t i;
for (i = 0; i < mutex_prof_num_arena_mutexes; i++) {
mutex_stats_output(write_cb, cbopaque,
arena_mutex_names[i], mutex_stats[i], i == 0);
}
}
}
static void
stats_arena_print(void (*write_cb)(void *, const char *), void *cbopaque,
bool json, unsigned i, bool bins, bool large, bool mutex) {
unsigned nthreads;
const char *dss;
ssize_t dirty_decay_time, muzzy_decay_time;
size_t page, pactive, pdirty, pmuzzy, mapped, retained;
size_t base, internal, resident;
uint64_t dirty_npurge, dirty_nmadvise, dirty_purged;
uint64_t muzzy_npurge, muzzy_nmadvise, muzzy_purged;
size_t small_allocated;
uint64_t small_nmalloc, small_ndalloc, small_nrequests;
size_t large_allocated;
uint64_t large_nmalloc, large_ndalloc, large_nrequests;
size_t tcache_bytes;
CTL_GET("arenas.page", &page, size_t);
CTL_M2_GET("stats.arenas.0.nthreads", i, &nthreads, unsigned);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"nthreads\": %u,\n", nthreads);
} else {
malloc_cprintf(write_cb, cbopaque,
"assigned threads: %u\n", nthreads);
}
CTL_M2_GET("stats.arenas.0.dss", i, &dss, const char *);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"dss\": \"%s\",\n", dss);
} else {
malloc_cprintf(write_cb, cbopaque,
"dss allocation precedence: %s\n", dss);
}
CTL_M2_GET("stats.arenas.0.dirty_decay_time", i, &dirty_decay_time,
ssize_t);
CTL_M2_GET("stats.arenas.0.muzzy_decay_time", i, &muzzy_decay_time,
ssize_t);
CTL_M2_GET("stats.arenas.0.pactive", i, &pactive, size_t);
CTL_M2_GET("stats.arenas.0.pdirty", i, &pdirty, size_t);
CTL_M2_GET("stats.arenas.0.pmuzzy", i, &pmuzzy, size_t);
CTL_M2_GET("stats.arenas.0.dirty_npurge", i, &dirty_npurge, uint64_t);
CTL_M2_GET("stats.arenas.0.dirty_nmadvise", i, &dirty_nmadvise,
uint64_t);
CTL_M2_GET("stats.arenas.0.dirty_purged", i, &dirty_purged, uint64_t);
CTL_M2_GET("stats.arenas.0.muzzy_npurge", i, &muzzy_npurge, uint64_t);
CTL_M2_GET("stats.arenas.0.muzzy_nmadvise", i, &muzzy_nmadvise,
uint64_t);
CTL_M2_GET("stats.arenas.0.muzzy_purged", i, &muzzy_purged, uint64_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"dirty_decay_time\": %zd,\n", dirty_decay_time);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"muzzy_decay_time\": %zd,\n", muzzy_decay_time);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"pactive\": %zu,\n", pactive);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"pdirty\": %zu,\n", pdirty);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"pmuzzy\": %zu,\n", pmuzzy);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"dirty_npurge\": %"FMTu64",\n", dirty_npurge);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"dirty_nmadvise\": %"FMTu64",\n", dirty_nmadvise);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"dirty_purged\": %"FMTu64",\n", dirty_purged);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"muzzy_npurge\": %"FMTu64",\n", muzzy_npurge);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"muzzy_nmadvise\": %"FMTu64",\n", muzzy_nmadvise);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"muzzy_purged\": %"FMTu64",\n", muzzy_purged);
} else {
malloc_cprintf(write_cb, cbopaque,
"decaying: time npages sweeps madvises"
" purged\n");
if (dirty_decay_time >= 0) {
malloc_cprintf(write_cb, cbopaque,
" dirty: %5zd %12zu %12"FMTu64" %12"FMTu64" %12"
FMTu64"\n", dirty_decay_time, pdirty, dirty_npurge,
dirty_nmadvise, dirty_purged);
} else {
malloc_cprintf(write_cb, cbopaque,
" dirty: N/A %12zu %12"FMTu64" %12"FMTu64" %12"
FMTu64"\n", pdirty, dirty_npurge, dirty_nmadvise,
dirty_purged);
}
if (muzzy_decay_time >= 0) {
malloc_cprintf(write_cb, cbopaque,
" muzzy: %5zd %12zu %12"FMTu64" %12"FMTu64" %12"
FMTu64"\n", muzzy_decay_time, pmuzzy, muzzy_npurge,
muzzy_nmadvise, muzzy_purged);
} else {
malloc_cprintf(write_cb, cbopaque,
" muzzy: N/A %12zu %12"FMTu64" %12"FMTu64" %12"
FMTu64"\n", pmuzzy, muzzy_npurge, muzzy_nmadvise,
muzzy_purged);
}
}
CTL_M2_GET("stats.arenas.0.small.allocated", i, &small_allocated,
size_t);
CTL_M2_GET("stats.arenas.0.small.nmalloc", i, &small_nmalloc, uint64_t);
CTL_M2_GET("stats.arenas.0.small.ndalloc", i, &small_ndalloc, uint64_t);
CTL_M2_GET("stats.arenas.0.small.nrequests", i, &small_nrequests,
uint64_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"small\": {\n");
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"allocated\": %zu,\n", small_allocated);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"nmalloc\": %"FMTu64",\n", small_nmalloc);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"ndalloc\": %"FMTu64",\n", small_ndalloc);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"nrequests\": %"FMTu64"\n", small_nrequests);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t},\n");
} else {
malloc_cprintf(write_cb, cbopaque,
" allocated nmalloc"
" ndalloc nrequests\n");
malloc_cprintf(write_cb, cbopaque,
"small: %12zu %12"FMTu64" %12"FMTu64
" %12"FMTu64"\n",
small_allocated, small_nmalloc, small_ndalloc,
small_nrequests);
}
CTL_M2_GET("stats.arenas.0.large.allocated", i, &large_allocated,
size_t);
CTL_M2_GET("stats.arenas.0.large.nmalloc", i, &large_nmalloc, uint64_t);
CTL_M2_GET("stats.arenas.0.large.ndalloc", i, &large_ndalloc, uint64_t);
CTL_M2_GET("stats.arenas.0.large.nrequests", i, &large_nrequests,
uint64_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"large\": {\n");
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"allocated\": %zu,\n", large_allocated);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"nmalloc\": %"FMTu64",\n", large_nmalloc);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"ndalloc\": %"FMTu64",\n", large_ndalloc);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"nrequests\": %"FMTu64"\n", large_nrequests);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t},\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"large: %12zu %12"FMTu64" %12"FMTu64
" %12"FMTu64"\n",
large_allocated, large_nmalloc, large_ndalloc,
large_nrequests);
malloc_cprintf(write_cb, cbopaque,
"total: %12zu %12"FMTu64" %12"FMTu64
" %12"FMTu64"\n",
small_allocated + large_allocated, small_nmalloc +
large_nmalloc, small_ndalloc + large_ndalloc,
small_nrequests + large_nrequests);
}
if (!json) {
malloc_cprintf(write_cb, cbopaque,
"active: %12zu\n", pactive * page);
}
CTL_M2_GET("stats.arenas.0.mapped", i, &mapped, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"mapped\": %zu,\n", mapped);
} else {
malloc_cprintf(write_cb, cbopaque,
"mapped: %12zu\n", mapped);
}
CTL_M2_GET("stats.arenas.0.retained", i, &retained, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"retained\": %zu,\n", retained);
} else {
malloc_cprintf(write_cb, cbopaque,
"retained: %12zu\n", retained);
}
CTL_M2_GET("stats.arenas.0.base", i, &base, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"base\": %zu,\n", base);
} else {
malloc_cprintf(write_cb, cbopaque,
"base: %12zu\n", base);
}
CTL_M2_GET("stats.arenas.0.internal", i, &internal, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"internal\": %zu,\n", internal);
} else {
malloc_cprintf(write_cb, cbopaque,
"internal: %12zu\n", internal);
}
CTL_M2_GET("stats.arenas.0.tcache_bytes", i, &tcache_bytes, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"tcache\": %zu,\n", tcache_bytes);
} else {
malloc_cprintf(write_cb, cbopaque,
"tcache: %12zu\n", tcache_bytes);
}
CTL_M2_GET("stats.arenas.0.resident", i, &resident, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\"resident\": %zu%s\n", resident,
(bins || large || mutex) ? "," : "");
} else {
malloc_cprintf(write_cb, cbopaque,
"resident: %12zu\n", resident);
}
if (mutex) {
stats_arena_mutexes_print(write_cb, cbopaque, json,
!(bins || large), i);
}
if (bins) {
stats_arena_bins_print(write_cb, cbopaque, json, large, mutex,
i);
}
if (large) {
stats_arena_lextents_print(write_cb, cbopaque, json, i);
}
}
static void
stats_general_print(void (*write_cb)(void *, const char *), void *cbopaque,
bool json, bool more) {
const char *cpv;
bool bv;
unsigned uv;
uint32_t u32v;
uint64_t u64v;
ssize_t ssv;
size_t sv, bsz, usz, ssz, sssz, cpsz;
bsz = sizeof(bool);
usz = sizeof(unsigned);
ssz = sizeof(size_t);
sssz = sizeof(ssize_t);
cpsz = sizeof(const char *);
CTL_GET("version", &cpv, const char *);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"version\": \"%s\",\n", cpv);
} else {
malloc_cprintf(write_cb, cbopaque, "Version: %s\n", cpv);
}
/* config. */
#define CONFIG_WRITE_BOOL_JSON(n, c) \
if (json) { \
CTL_GET("config."#n, &bv, bool); \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %s%s\n", bv ? "true" : "false", \
(c)); \
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"config\": {\n");
}
CONFIG_WRITE_BOOL_JSON(cache_oblivious, ",")
CTL_GET("config.debug", &bv, bool);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"debug\": %s,\n", bv ? "true" : "false");
} else {
malloc_cprintf(write_cb, cbopaque, "Assertions %s\n",
bv ? "enabled" : "disabled");
}
CONFIG_WRITE_BOOL_JSON(fill, ",")
CONFIG_WRITE_BOOL_JSON(lazy_lock, ",")
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"malloc_conf\": \"%s\",\n",
config_malloc_conf);
} else {
malloc_cprintf(write_cb, cbopaque,
"config.malloc_conf: \"%s\"\n", config_malloc_conf);
}
CONFIG_WRITE_BOOL_JSON(prof, ",")
CONFIG_WRITE_BOOL_JSON(prof_libgcc, ",")
CONFIG_WRITE_BOOL_JSON(prof_libunwind, ",")
CONFIG_WRITE_BOOL_JSON(stats, ",")
CONFIG_WRITE_BOOL_JSON(utrace, ",")
CONFIG_WRITE_BOOL_JSON(xmalloc, "")
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t},\n");
}
#undef CONFIG_WRITE_BOOL_JSON
/* opt. */
#define OPT_WRITE_BOOL(n, c) \
if (je_mallctl("opt."#n, (void *)&bv, &bsz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %s%s\n", bv ? "true" : \
"false", (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": %s\n", bv ? "true" : "false"); \
} \
}
#define OPT_WRITE_BOOL_MUTABLE(n, m, c) { \
bool bv2; \
if (je_mallctl("opt."#n, (void *)&bv, &bsz, NULL, 0) == 0 && \
je_mallctl(#m, (void *)&bv2, &bsz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %s%s\n", bv ? "true" : \
"false", (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": %s ("#m": %s)\n", bv ? "true" \
: "false", bv2 ? "true" : "false"); \
} \
} \
}
#define OPT_WRITE_UNSIGNED(n, c) \
if (je_mallctl("opt."#n, (void *)&uv, &usz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %u%s\n", uv, (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": %u\n", uv); \
} \
}
#define OPT_WRITE_SSIZE_T(n, c) \
if (je_mallctl("opt."#n, (void *)&ssv, &sssz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %zd%s\n", ssv, (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": %zd\n", ssv); \
} \
}
#define OPT_WRITE_SSIZE_T_MUTABLE(n, m, c) { \
ssize_t ssv2; \
if (je_mallctl("opt."#n, (void *)&ssv, &sssz, NULL, 0) == 0 && \
je_mallctl(#m, (void *)&ssv2, &sssz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": %zd%s\n", ssv, (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": %zd ("#m": %zd)\n", \
ssv, ssv2); \
} \
} \
}
#define OPT_WRITE_CHAR_P(n, c) \
if (je_mallctl("opt."#n, (void *)&cpv, &cpsz, NULL, 0) == 0) { \
if (json) { \
malloc_cprintf(write_cb, cbopaque, \
"\t\t\t\""#n"\": \"%s\"%s\n", cpv, (c)); \
} else { \
malloc_cprintf(write_cb, cbopaque, \
" opt."#n": \"%s\"\n", cpv); \
} \
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"opt\": {\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"Run-time option settings:\n");
}
OPT_WRITE_BOOL(abort, ",")
OPT_WRITE_BOOL(retain, ",")
OPT_WRITE_CHAR_P(dss, ",")
OPT_WRITE_UNSIGNED(narenas, ",")
OPT_WRITE_CHAR_P(percpu_arena, ",")
OPT_WRITE_SSIZE_T_MUTABLE(dirty_decay_time, arenas.dirty_decay_time,
",")
OPT_WRITE_SSIZE_T_MUTABLE(muzzy_decay_time, arenas.muzzy_decay_time,
",")
OPT_WRITE_CHAR_P(junk, ",")
OPT_WRITE_BOOL(zero, ",")
OPT_WRITE_BOOL(utrace, ",")
OPT_WRITE_BOOL(xmalloc, ",")
OPT_WRITE_BOOL(tcache, ",")
OPT_WRITE_SSIZE_T(lg_tcache_max, ",")
OPT_WRITE_BOOL(prof, ",")
OPT_WRITE_CHAR_P(prof_prefix, ",")
OPT_WRITE_BOOL_MUTABLE(prof_active, prof.active, ",")
OPT_WRITE_BOOL_MUTABLE(prof_thread_active_init, prof.thread_active_init,
",")
OPT_WRITE_SSIZE_T_MUTABLE(lg_prof_sample, prof.lg_sample, ",")
OPT_WRITE_BOOL(prof_accum, ",")
OPT_WRITE_SSIZE_T(lg_prof_interval, ",")
OPT_WRITE_BOOL(prof_gdump, ",")
OPT_WRITE_BOOL(prof_final, ",")
OPT_WRITE_BOOL(prof_leak, ",")
/*
* stats_print is always emitted, so as long as stats_print comes last
* it's safe to unconditionally omit the comma here (rather than having
* to conditionally omit it elsewhere depending on configuration).
*/
OPT_WRITE_BOOL(stats_print, "")
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t},\n");
}
#undef OPT_WRITE_BOOL
#undef OPT_WRITE_BOOL_MUTABLE
#undef OPT_WRITE_SSIZE_T
#undef OPT_WRITE_CHAR_P
/* arenas. */
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"arenas\": {\n");
}
CTL_GET("arenas.narenas", &uv, unsigned);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"narenas\": %u,\n", uv);
} else {
malloc_cprintf(write_cb, cbopaque, "Arenas: %u\n", uv);
}
CTL_GET("arenas.dirty_decay_time", &ssv, ssize_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"dirty_decay_time\": %zd,\n", ssv);
} else {
malloc_cprintf(write_cb, cbopaque,
"Unused dirty page decay time: %zd%s\n", ssv, (ssv < 0) ?
" (no decay)" : "");
}
CTL_GET("arenas.muzzy_decay_time", &ssv, ssize_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"muzzy_decay_time\": %zd,\n", ssv);
} else {
malloc_cprintf(write_cb, cbopaque,
"Unused muzzy page decay time: %zd%s\n", ssv, (ssv < 0) ?
" (no decay)" : "");
}
CTL_GET("arenas.quantum", &sv, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"quantum\": %zu,\n", sv);
} else {
malloc_cprintf(write_cb, cbopaque, "Quantum size: %zu\n", sv);
}
CTL_GET("arenas.page", &sv, size_t);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"page\": %zu,\n", sv);
} else {
malloc_cprintf(write_cb, cbopaque, "Page size: %zu\n", sv);
}
if (je_mallctl("arenas.tcache_max", (void *)&sv, &ssz, NULL, 0) == 0) {
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"tcache_max\": %zu,\n", sv);
} else {
malloc_cprintf(write_cb, cbopaque,
"Maximum thread-cached size class: %zu\n", sv);
}
}
if (json) {
unsigned nbins, nlextents, i;
CTL_GET("arenas.nbins", &nbins, unsigned);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"nbins\": %u,\n", nbins);
CTL_GET("arenas.nhbins", &uv, unsigned);
malloc_cprintf(write_cb, cbopaque, "\t\t\t\"nhbins\": %u,\n",
uv);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"bin\": [\n");
for (i = 0; i < nbins; i++) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t{\n");
CTL_M2_GET("arenas.bin.0.size", i, &sv, size_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"size\": %zu,\n", sv);
CTL_M2_GET("arenas.bin.0.nregs", i, &u32v, uint32_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"nregs\": %"FMTu32",\n", u32v);
CTL_M2_GET("arenas.bin.0.slab_size", i, &sv, size_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"slab_size\": %zu\n", sv);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t}%s\n", (i + 1 < nbins) ? "," : "");
}
malloc_cprintf(write_cb, cbopaque,
"\t\t\t],\n");
CTL_GET("arenas.nlextents", &nlextents, unsigned);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"nlextents\": %u,\n", nlextents);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"lextent\": [\n");
for (i = 0; i < nlextents; i++) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t{\n");
CTL_M2_GET("arenas.lextent.0.size", i, &sv, size_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t\t\"size\": %zu\n", sv);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\t}%s\n", (i + 1 < nlextents) ? "," : "");
}
malloc_cprintf(write_cb, cbopaque,
"\t\t\t]\n");
malloc_cprintf(write_cb, cbopaque,
"\t\t}%s\n", (config_prof || more) ? "," : "");
}
/* prof. */
if (config_prof && json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"prof\": {\n");
CTL_GET("prof.thread_active_init", &bv, bool);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"thread_active_init\": %s,\n", bv ? "true" :
"false");
CTL_GET("prof.active", &bv, bool);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"active\": %s,\n", bv ? "true" : "false");
CTL_GET("prof.gdump", &bv, bool);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"gdump\": %s,\n", bv ? "true" : "false");
CTL_GET("prof.interval", &u64v, uint64_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"interval\": %"FMTu64",\n", u64v);
CTL_GET("prof.lg_sample", &ssv, ssize_t);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"lg_sample\": %zd\n", ssv);
malloc_cprintf(write_cb, cbopaque,
"\t\t}%s\n", more ? "," : "");
}
}
static void
read_global_mutex_stats(
uint64_t results[mutex_prof_num_global_mutexes][mutex_prof_num_counters]) {
char cmd[MUTEX_CTL_STR_MAX_LENGTH];
mutex_prof_global_ind_t i;
for (i = 0; i < mutex_prof_num_global_mutexes; i++) {
#define OP(c, t) \
gen_mutex_ctl_str(cmd, MUTEX_CTL_STR_MAX_LENGTH, \
"mutexes", global_mutex_names[i], #c); \
CTL_GET(cmd, (t *)&results[i][mutex_counter_##c], t);
MUTEX_PROF_COUNTERS
#undef OP
}
}
static void
stats_print_helper(void (*write_cb)(void *, const char *), void *cbopaque,
bool json, bool merged, bool destroyed, bool unmerged, bool bins,
bool large, bool mutex) {
size_t allocated, active, metadata, resident, mapped, retained;
CTL_GET("stats.allocated", &allocated, size_t);
CTL_GET("stats.active", &active, size_t);
CTL_GET("stats.metadata", &metadata, size_t);
CTL_GET("stats.resident", &resident, size_t);
CTL_GET("stats.mapped", &mapped, size_t);
CTL_GET("stats.retained", &retained, size_t);
uint64_t mutex_stats[mutex_prof_num_global_mutexes][mutex_prof_num_counters];
if (mutex) {
read_global_mutex_stats(mutex_stats);
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"stats\": {\n");
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"allocated\": %zu,\n", allocated);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"active\": %zu,\n", active);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"metadata\": %zu,\n", metadata);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"resident\": %zu,\n", resident);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"mapped\": %zu,\n", mapped);
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"retained\": %zu%s\n", retained, mutex ? "," : "");
if (mutex) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"mutexes\": {\n");
mutex_prof_global_ind_t i;
for (i = 0; i < mutex_prof_num_global_mutexes; i++) {
mutex_stats_output_json(write_cb, cbopaque,
global_mutex_names[i], mutex_stats[i],
"\t\t\t\t",
i == mutex_prof_num_global_mutexes - 1);
}
malloc_cprintf(write_cb, cbopaque, "\t\t\t}\n");
}
malloc_cprintf(write_cb, cbopaque,
"\t\t}%s\n", (merged || unmerged || destroyed) ? "," : "");
} else {
malloc_cprintf(write_cb, cbopaque,
"Allocated: %zu, active: %zu, metadata: %zu,"
" resident: %zu, mapped: %zu, retained: %zu\n",
allocated, active, metadata, resident, mapped, retained);
if (mutex) {
mutex_prof_global_ind_t i;
for (i = 0; i < mutex_prof_num_global_mutexes; i++) {
mutex_stats_output(write_cb, cbopaque,
global_mutex_names[i], mutex_stats[i],
i == 0);
}
}
}
if (merged || destroyed || unmerged) {
unsigned narenas;
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\"stats.arenas\": {\n");
}
CTL_GET("arenas.narenas", &narenas, unsigned);
{
size_t mib[3];
size_t miblen = sizeof(mib) / sizeof(size_t);
size_t sz;
VARIABLE_ARRAY(bool, initialized, narenas);
bool destroyed_initialized;
unsigned i, j, ninitialized;
xmallctlnametomib("arena.0.initialized", mib, &miblen);
for (i = ninitialized = 0; i < narenas; i++) {
mib[1] = i;
sz = sizeof(bool);
xmallctlbymib(mib, miblen, &initialized[i], &sz,
NULL, 0);
if (initialized[i]) {
ninitialized++;
}
}
mib[1] = MALLCTL_ARENAS_DESTROYED;
sz = sizeof(bool);
xmallctlbymib(mib, miblen, &destroyed_initialized, &sz,
NULL, 0);
/* Merged stats. */
if (merged && (ninitialized > 1 || !unmerged)) {
/* Print merged arena stats. */
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"merged\": {\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"\nMerged arenas stats:\n");
}
stats_arena_print(write_cb, cbopaque, json,
MALLCTL_ARENAS_ALL, bins, large, mutex);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t}%s\n",
((destroyed_initialized &&
destroyed) || unmerged) ? "," :
"");
}
}
/* Destroyed stats. */
if (destroyed_initialized && destroyed) {
/* Print destroyed arena stats. */
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t\"destroyed\": {\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"\nDestroyed arenas stats:\n");
}
stats_arena_print(write_cb, cbopaque, json,
MALLCTL_ARENAS_DESTROYED, bins, large,
mutex);
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t\t}%s\n", unmerged ? "," :
"");
}
}
/* Unmerged stats. */
if (unmerged) {
for (i = j = 0; i < narenas; i++) {
if (initialized[i]) {
if (json) {
j++;
malloc_cprintf(write_cb,
cbopaque,
"\t\t\t\"%u\": {\n",
i);
} else {
malloc_cprintf(write_cb,
cbopaque,
"\narenas[%u]:\n",
i);
}
stats_arena_print(write_cb,
cbopaque, json, i, bins,
large, mutex);
if (json) {
malloc_cprintf(write_cb,
cbopaque,
"\t\t\t}%s\n", (j <
ninitialized) ? ","
: "");
}
}
}
}
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t\t}\n");
}
}
}
void
stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
const char *opts) {
int err;
uint64_t epoch;
size_t u64sz;
bool json = false;
bool general = true;
bool merged = config_stats;
bool destroyed = config_stats;
bool unmerged = config_stats;
bool bins = true;
bool large = true;
bool mutex = true;
/*
* Refresh stats, in case mallctl() was called by the application.
*
* Check for OOM here, since refreshing the ctl cache can trigger
* allocation. In practice, none of the subsequent mallctl()-related
* calls in this function will cause OOM if this one succeeds.
* */
epoch = 1;
u64sz = sizeof(uint64_t);
err = je_mallctl("epoch", (void *)&epoch, &u64sz, (void *)&epoch,
sizeof(uint64_t));
if (err != 0) {
if (err == EAGAIN) {
malloc_write("<jemalloc>: Memory allocation failure in "
"mallctl(\"epoch\", ...)\n");
return;
}
malloc_write("<jemalloc>: Failure in mallctl(\"epoch\", "
"...)\n");
abort();
}
if (opts != NULL) {
unsigned i;
for (i = 0; opts[i] != '\0'; i++) {
switch (opts[i]) {
case 'J':
json = true;
break;
case 'g':
general = false;
break;
case 'm':
merged = false;
break;
case 'd':
destroyed = false;
break;
case 'a':
unmerged = false;
break;
case 'b':
bins = false;
break;
case 'l':
large = false;
break;
case 'x':
mutex = false;
break;
default:;
}
}
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"{\n"
"\t\"jemalloc\": {\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"___ Begin jemalloc statistics ___\n");
}
if (general) {
stats_general_print(write_cb, cbopaque, json, config_stats);
}
if (config_stats) {
stats_print_helper(write_cb, cbopaque, json, merged, destroyed,
unmerged, bins, large, mutex);
}
if (json) {
malloc_cprintf(write_cb, cbopaque,
"\t}\n"
"}\n");
} else {
malloc_cprintf(write_cb, cbopaque,
"--- End jemalloc statistics ---\n");
}
}