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fuchsia / third_party / github.com / jemalloc / jemalloc / 391bad4b95839e2c690879ca62b1e904a49a78df / . / src / ctl.c
blob: 135271bafae78f3afa828c07d534f031b07ed74a [file] [log] [blame]
#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/extent_dss.h"
#include "jemalloc/internal/extent_mmap.h"
#include "jemalloc/internal/inspect.h"
#include "jemalloc/internal/mutex.h"
#include "jemalloc/internal/nstime.h"
#include "jemalloc/internal/peak_event.h"
#include "jemalloc/internal/prof_data.h"
#include "jemalloc/internal/prof_log.h"
#include "jemalloc/internal/prof_recent.h"
#include "jemalloc/internal/prof_stats.h"
#include "jemalloc/internal/prof_sys.h"
#include "jemalloc/internal/safety_check.h"
#include "jemalloc/internal/sc.h"
#include "jemalloc/internal/util.h"
/******************************************************************************/
/* Data. */
/*
* ctl_mtx protects the following:
* - ctl_stats->*
*/
static malloc_mutex_t ctl_mtx;
static bool ctl_initialized;
static ctl_stats_t *ctl_stats;
static ctl_arenas_t *ctl_arenas;
/******************************************************************************/
/* Helpers for named and indexed nodes. */
static const ctl_named_node_t *
ctl_named_node(const ctl_node_t *node) {
return ((node->named) ? (const ctl_named_node_t *)node : NULL);
}
static const ctl_named_node_t *
ctl_named_children(const ctl_named_node_t *node, size_t index) {
const ctl_named_node_t *children = ctl_named_node(node->children);
return (children ? &children[index] : NULL);
}
static const ctl_indexed_node_t *
ctl_indexed_node(const ctl_node_t *node) {
return (!node->named ? (const ctl_indexed_node_t *)node : NULL);
}
/******************************************************************************/
/* Function prototypes for non-inline static functions. */
#define CTL_PROTO(n) \
static int n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, \
void *oldp, size_t *oldlenp, void *newp, size_t newlen);
#define INDEX_PROTO(n) \
static const ctl_named_node_t *n##_index(tsdn_t *tsdn, \
const size_t *mib, size_t miblen, size_t i);
CTL_PROTO(version)
CTL_PROTO(epoch)
CTL_PROTO(background_thread)
CTL_PROTO(max_background_threads)
CTL_PROTO(thread_tcache_enabled)
CTL_PROTO(thread_tcache_flush)
CTL_PROTO(thread_peak_read)
CTL_PROTO(thread_peak_reset)
CTL_PROTO(thread_prof_name)
CTL_PROTO(thread_prof_active)
CTL_PROTO(thread_arena)
CTL_PROTO(thread_allocated)
CTL_PROTO(thread_allocatedp)
CTL_PROTO(thread_deallocated)
CTL_PROTO(thread_deallocatedp)
CTL_PROTO(thread_idle)
CTL_PROTO(config_cache_oblivious)
CTL_PROTO(config_debug)
CTL_PROTO(config_fill)
CTL_PROTO(config_lazy_lock)
CTL_PROTO(config_malloc_conf)
CTL_PROTO(config_opt_safety_checks)
CTL_PROTO(config_prof)
CTL_PROTO(config_prof_libgcc)
CTL_PROTO(config_prof_libunwind)
CTL_PROTO(config_stats)
CTL_PROTO(config_utrace)
CTL_PROTO(config_xmalloc)
CTL_PROTO(opt_abort)
CTL_PROTO(opt_abort_conf)
CTL_PROTO(opt_cache_oblivious)
CTL_PROTO(opt_trust_madvise)
CTL_PROTO(opt_confirm_conf)
CTL_PROTO(opt_hpa)
CTL_PROTO(opt_hpa_slab_max_alloc)
CTL_PROTO(opt_hpa_hugification_threshold)
CTL_PROTO(opt_hpa_hugify_delay_ms)
CTL_PROTO(opt_hpa_min_purge_interval_ms)
CTL_PROTO(opt_hpa_dirty_mult)
CTL_PROTO(opt_hpa_sec_nshards)
CTL_PROTO(opt_hpa_sec_max_alloc)
CTL_PROTO(opt_hpa_sec_max_bytes)
CTL_PROTO(opt_hpa_sec_bytes_after_flush)
CTL_PROTO(opt_hpa_sec_batch_fill_extra)
CTL_PROTO(opt_metadata_thp)
CTL_PROTO(opt_retain)
CTL_PROTO(opt_dss)
CTL_PROTO(opt_narenas)
CTL_PROTO(opt_percpu_arena)
CTL_PROTO(opt_oversize_threshold)
CTL_PROTO(opt_background_thread)
CTL_PROTO(opt_mutex_max_spin)
CTL_PROTO(opt_max_background_threads)
CTL_PROTO(opt_dirty_decay_ms)
CTL_PROTO(opt_muzzy_decay_ms)
CTL_PROTO(opt_stats_print)
CTL_PROTO(opt_stats_print_opts)
CTL_PROTO(opt_stats_interval)
CTL_PROTO(opt_stats_interval_opts)
CTL_PROTO(opt_junk)
CTL_PROTO(opt_zero)
CTL_PROTO(opt_utrace)
CTL_PROTO(opt_xmalloc)
CTL_PROTO(opt_experimental_infallible_new)
CTL_PROTO(opt_tcache)
CTL_PROTO(opt_tcache_max)
CTL_PROTO(opt_tcache_nslots_small_min)
CTL_PROTO(opt_tcache_nslots_small_max)
CTL_PROTO(opt_tcache_nslots_large)
CTL_PROTO(opt_lg_tcache_nslots_mul)
CTL_PROTO(opt_tcache_gc_incr_bytes)
CTL_PROTO(opt_tcache_gc_delay_bytes)
CTL_PROTO(opt_lg_tcache_flush_small_div)
CTL_PROTO(opt_lg_tcache_flush_large_div)
CTL_PROTO(opt_thp)
CTL_PROTO(opt_lg_extent_max_active_fit)
CTL_PROTO(opt_prof)
CTL_PROTO(opt_prof_prefix)
CTL_PROTO(opt_prof_active)
CTL_PROTO(opt_prof_thread_active_init)
CTL_PROTO(opt_lg_prof_sample)
CTL_PROTO(opt_lg_prof_interval)
CTL_PROTO(opt_prof_gdump)
CTL_PROTO(opt_prof_final)
CTL_PROTO(opt_prof_leak)
CTL_PROTO(opt_prof_leak_error)
CTL_PROTO(opt_prof_accum)
CTL_PROTO(opt_prof_recent_alloc_max)
CTL_PROTO(opt_prof_stats)
CTL_PROTO(opt_prof_sys_thread_name)
CTL_PROTO(opt_prof_time_res)
CTL_PROTO(opt_lg_san_uaf_align)
CTL_PROTO(opt_zero_realloc)
CTL_PROTO(tcache_create)
CTL_PROTO(tcache_flush)
CTL_PROTO(tcache_destroy)
CTL_PROTO(arena_i_initialized)
CTL_PROTO(arena_i_decay)
CTL_PROTO(arena_i_purge)
CTL_PROTO(arena_i_reset)
CTL_PROTO(arena_i_destroy)
CTL_PROTO(arena_i_dss)
CTL_PROTO(arena_i_oversize_threshold)
CTL_PROTO(arena_i_dirty_decay_ms)
CTL_PROTO(arena_i_muzzy_decay_ms)
CTL_PROTO(arena_i_extent_hooks)
CTL_PROTO(arena_i_retain_grow_limit)
INDEX_PROTO(arena_i)
CTL_PROTO(arenas_bin_i_size)
CTL_PROTO(arenas_bin_i_nregs)
CTL_PROTO(arenas_bin_i_slab_size)
CTL_PROTO(arenas_bin_i_nshards)
INDEX_PROTO(arenas_bin_i)
CTL_PROTO(arenas_lextent_i_size)
INDEX_PROTO(arenas_lextent_i)
CTL_PROTO(arenas_narenas)
CTL_PROTO(arenas_dirty_decay_ms)
CTL_PROTO(arenas_muzzy_decay_ms)
CTL_PROTO(arenas_quantum)
CTL_PROTO(arenas_page)
CTL_PROTO(arenas_tcache_max)
CTL_PROTO(arenas_nbins)
CTL_PROTO(arenas_nhbins)
CTL_PROTO(arenas_nlextents)
CTL_PROTO(arenas_create)
CTL_PROTO(arenas_lookup)
CTL_PROTO(prof_thread_active_init)
CTL_PROTO(prof_active)
CTL_PROTO(prof_dump)
CTL_PROTO(prof_gdump)
CTL_PROTO(prof_prefix)
CTL_PROTO(prof_reset)
CTL_PROTO(prof_interval)
CTL_PROTO(lg_prof_sample)
CTL_PROTO(prof_log_start)
CTL_PROTO(prof_log_stop)
CTL_PROTO(prof_stats_bins_i_live)
CTL_PROTO(prof_stats_bins_i_accum)
INDEX_PROTO(prof_stats_bins_i)
CTL_PROTO(prof_stats_lextents_i_live)
CTL_PROTO(prof_stats_lextents_i_accum)
INDEX_PROTO(prof_stats_lextents_i)
CTL_PROTO(stats_arenas_i_small_allocated)
CTL_PROTO(stats_arenas_i_small_nmalloc)
CTL_PROTO(stats_arenas_i_small_ndalloc)
CTL_PROTO(stats_arenas_i_small_nrequests)
CTL_PROTO(stats_arenas_i_small_nfills)
CTL_PROTO(stats_arenas_i_small_nflushes)
CTL_PROTO(stats_arenas_i_large_allocated)
CTL_PROTO(stats_arenas_i_large_nmalloc)
CTL_PROTO(stats_arenas_i_large_ndalloc)
CTL_PROTO(stats_arenas_i_large_nrequests)
CTL_PROTO(stats_arenas_i_large_nfills)
CTL_PROTO(stats_arenas_i_large_nflushes)
CTL_PROTO(stats_arenas_i_bins_j_nmalloc)
CTL_PROTO(stats_arenas_i_bins_j_ndalloc)
CTL_PROTO(stats_arenas_i_bins_j_nrequests)
CTL_PROTO(stats_arenas_i_bins_j_curregs)
CTL_PROTO(stats_arenas_i_bins_j_nfills)
CTL_PROTO(stats_arenas_i_bins_j_nflushes)
CTL_PROTO(stats_arenas_i_bins_j_nslabs)
CTL_PROTO(stats_arenas_i_bins_j_nreslabs)
CTL_PROTO(stats_arenas_i_bins_j_curslabs)
CTL_PROTO(stats_arenas_i_bins_j_nonfull_slabs)
INDEX_PROTO(stats_arenas_i_bins_j)
CTL_PROTO(stats_arenas_i_lextents_j_nmalloc)
CTL_PROTO(stats_arenas_i_lextents_j_ndalloc)
CTL_PROTO(stats_arenas_i_lextents_j_nrequests)
CTL_PROTO(stats_arenas_i_lextents_j_curlextents)
INDEX_PROTO(stats_arenas_i_lextents_j)
CTL_PROTO(stats_arenas_i_extents_j_ndirty)
CTL_PROTO(stats_arenas_i_extents_j_nmuzzy)
CTL_PROTO(stats_arenas_i_extents_j_nretained)
CTL_PROTO(stats_arenas_i_extents_j_dirty_bytes)
CTL_PROTO(stats_arenas_i_extents_j_muzzy_bytes)
CTL_PROTO(stats_arenas_i_extents_j_retained_bytes)
INDEX_PROTO(stats_arenas_i_extents_j)
CTL_PROTO(stats_arenas_i_hpa_shard_npurge_passes)
CTL_PROTO(stats_arenas_i_hpa_shard_npurges)
CTL_PROTO(stats_arenas_i_hpa_shard_nhugifies)
CTL_PROTO(stats_arenas_i_hpa_shard_ndehugifies)
/* We have a set of stats for full slabs. */
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_nactive_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_full_slabs_ndirty_huge)
/* A parallel set for the empty slabs. */
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_nactive_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge)
/*
* And one for the slabs that are neither empty nor full, but indexed by how
* full they are.
*/
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge)
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge)
CTL_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge)
INDEX_PROTO(stats_arenas_i_hpa_shard_nonfull_slabs_j)
CTL_PROTO(stats_arenas_i_nthreads)
CTL_PROTO(stats_arenas_i_uptime)
CTL_PROTO(stats_arenas_i_dss)
CTL_PROTO(stats_arenas_i_dirty_decay_ms)
CTL_PROTO(stats_arenas_i_muzzy_decay_ms)
CTL_PROTO(stats_arenas_i_pactive)
CTL_PROTO(stats_arenas_i_pdirty)
CTL_PROTO(stats_arenas_i_pmuzzy)
CTL_PROTO(stats_arenas_i_mapped)
CTL_PROTO(stats_arenas_i_retained)
CTL_PROTO(stats_arenas_i_extent_avail)
CTL_PROTO(stats_arenas_i_dirty_npurge)
CTL_PROTO(stats_arenas_i_dirty_nmadvise)
CTL_PROTO(stats_arenas_i_dirty_purged)
CTL_PROTO(stats_arenas_i_muzzy_npurge)
CTL_PROTO(stats_arenas_i_muzzy_nmadvise)
CTL_PROTO(stats_arenas_i_muzzy_purged)
CTL_PROTO(stats_arenas_i_base)
CTL_PROTO(stats_arenas_i_internal)
CTL_PROTO(stats_arenas_i_metadata_thp)
CTL_PROTO(stats_arenas_i_tcache_bytes)
CTL_PROTO(stats_arenas_i_tcache_stashed_bytes)
CTL_PROTO(stats_arenas_i_resident)
CTL_PROTO(stats_arenas_i_abandoned_vm)
CTL_PROTO(stats_arenas_i_hpa_sec_bytes)
INDEX_PROTO(stats_arenas_i)
CTL_PROTO(stats_allocated)
CTL_PROTO(stats_active)
CTL_PROTO(stats_background_thread_num_threads)
CTL_PROTO(stats_background_thread_num_runs)
CTL_PROTO(stats_background_thread_run_interval)
CTL_PROTO(stats_metadata)
CTL_PROTO(stats_metadata_thp)
CTL_PROTO(stats_resident)
CTL_PROTO(stats_mapped)
CTL_PROTO(stats_retained)
CTL_PROTO(stats_zero_reallocs)
CTL_PROTO(experimental_hooks_install)
CTL_PROTO(experimental_hooks_remove)
CTL_PROTO(experimental_hooks_prof_backtrace)
CTL_PROTO(experimental_hooks_prof_dump)
CTL_PROTO(experimental_hooks_safety_check_abort)
CTL_PROTO(experimental_thread_activity_callback)
CTL_PROTO(experimental_utilization_query)
CTL_PROTO(experimental_utilization_batch_query)
CTL_PROTO(experimental_arenas_i_pactivep)
INDEX_PROTO(experimental_arenas_i)
CTL_PROTO(experimental_prof_recent_alloc_max)
CTL_PROTO(experimental_prof_recent_alloc_dump)
CTL_PROTO(experimental_batch_alloc)
CTL_PROTO(experimental_arenas_create_ext)
#define MUTEX_STATS_CTL_PROTO_GEN(n) \
CTL_PROTO(stats_##n##_num_ops) \
CTL_PROTO(stats_##n##_num_wait) \
CTL_PROTO(stats_##n##_num_spin_acq) \
CTL_PROTO(stats_##n##_num_owner_switch) \
CTL_PROTO(stats_##n##_total_wait_time) \
CTL_PROTO(stats_##n##_max_wait_time) \
CTL_PROTO(stats_##n##_max_num_thds)
/* Global mutexes. */
#define OP(mtx) MUTEX_STATS_CTL_PROTO_GEN(mutexes_##mtx)
MUTEX_PROF_GLOBAL_MUTEXES
#undef OP
/* Per arena mutexes. */
#define OP(mtx) MUTEX_STATS_CTL_PROTO_GEN(arenas_i_mutexes_##mtx)
MUTEX_PROF_ARENA_MUTEXES
#undef OP
/* Arena bin mutexes. */
MUTEX_STATS_CTL_PROTO_GEN(arenas_i_bins_j_mutex)
#undef MUTEX_STATS_CTL_PROTO_GEN
CTL_PROTO(stats_mutexes_reset)
/******************************************************************************/
/* mallctl tree. */
#define NAME(n) {true}, n
#define CHILD(t, c) \
sizeof(c##_node) / sizeof(ctl_##t##_node_t), \
(ctl_node_t *)c##_node, \
NULL
#define CTL(c) 0, NULL, c##_ctl
/*
* Only handles internal indexed nodes, since there are currently no external
* ones.
*/
#define INDEX(i) {false}, i##_index
static const ctl_named_node_t thread_tcache_node[] = {
{NAME("enabled"), CTL(thread_tcache_enabled)},
{NAME("flush"), CTL(thread_tcache_flush)}
};
static const ctl_named_node_t thread_peak_node[] = {
{NAME("read"), CTL(thread_peak_read)},
{NAME("reset"), CTL(thread_peak_reset)},
};
static const ctl_named_node_t thread_prof_node[] = {
{NAME("name"), CTL(thread_prof_name)},
{NAME("active"), CTL(thread_prof_active)}
};
static const ctl_named_node_t thread_node[] = {
{NAME("arena"), CTL(thread_arena)},
{NAME("allocated"), CTL(thread_allocated)},
{NAME("allocatedp"), CTL(thread_allocatedp)},
{NAME("deallocated"), CTL(thread_deallocated)},
{NAME("deallocatedp"), CTL(thread_deallocatedp)},
{NAME("tcache"), CHILD(named, thread_tcache)},
{NAME("peak"), CHILD(named, thread_peak)},
{NAME("prof"), CHILD(named, thread_prof)},
{NAME("idle"), CTL(thread_idle)}
};
static const ctl_named_node_t config_node[] = {
{NAME("cache_oblivious"), CTL(config_cache_oblivious)},
{NAME("debug"), CTL(config_debug)},
{NAME("fill"), CTL(config_fill)},
{NAME("lazy_lock"), CTL(config_lazy_lock)},
{NAME("malloc_conf"), CTL(config_malloc_conf)},
{NAME("opt_safety_checks"), CTL(config_opt_safety_checks)},
{NAME("prof"), CTL(config_prof)},
{NAME("prof_libgcc"), CTL(config_prof_libgcc)},
{NAME("prof_libunwind"), CTL(config_prof_libunwind)},
{NAME("stats"), CTL(config_stats)},
{NAME("utrace"), CTL(config_utrace)},
{NAME("xmalloc"), CTL(config_xmalloc)}
};
static const ctl_named_node_t opt_node[] = {
{NAME("abort"), CTL(opt_abort)},
{NAME("abort_conf"), CTL(opt_abort_conf)},
{NAME("cache_oblivious"), CTL(opt_cache_oblivious)},
{NAME("trust_madvise"), CTL(opt_trust_madvise)},
{NAME("confirm_conf"), CTL(opt_confirm_conf)},
{NAME("hpa"), CTL(opt_hpa)},
{NAME("hpa_slab_max_alloc"), CTL(opt_hpa_slab_max_alloc)},
{NAME("hpa_hugification_threshold"),
CTL(opt_hpa_hugification_threshold)},
{NAME("hpa_hugify_delay_ms"), CTL(opt_hpa_hugify_delay_ms)},
{NAME("hpa_min_purge_interval_ms"), CTL(opt_hpa_min_purge_interval_ms)},
{NAME("hpa_dirty_mult"), CTL(opt_hpa_dirty_mult)},
{NAME("hpa_sec_nshards"), CTL(opt_hpa_sec_nshards)},
{NAME("hpa_sec_max_alloc"), CTL(opt_hpa_sec_max_alloc)},
{NAME("hpa_sec_max_bytes"), CTL(opt_hpa_sec_max_bytes)},
{NAME("hpa_sec_bytes_after_flush"),
CTL(opt_hpa_sec_bytes_after_flush)},
{NAME("hpa_sec_batch_fill_extra"),
CTL(opt_hpa_sec_batch_fill_extra)},
{NAME("metadata_thp"), CTL(opt_metadata_thp)},
{NAME("retain"), CTL(opt_retain)},
{NAME("dss"), CTL(opt_dss)},
{NAME("narenas"), CTL(opt_narenas)},
{NAME("percpu_arena"), CTL(opt_percpu_arena)},
{NAME("oversize_threshold"), CTL(opt_oversize_threshold)},
{NAME("mutex_max_spin"), CTL(opt_mutex_max_spin)},
{NAME("background_thread"), CTL(opt_background_thread)},
{NAME("max_background_threads"), CTL(opt_max_background_threads)},
{NAME("dirty_decay_ms"), CTL(opt_dirty_decay_ms)},
{NAME("muzzy_decay_ms"), CTL(opt_muzzy_decay_ms)},
{NAME("stats_print"), CTL(opt_stats_print)},
{NAME("stats_print_opts"), CTL(opt_stats_print_opts)},
{NAME("stats_interval"), CTL(opt_stats_interval)},
{NAME("stats_interval_opts"), CTL(opt_stats_interval_opts)},
{NAME("junk"), CTL(opt_junk)},
{NAME("zero"), CTL(opt_zero)},
{NAME("utrace"), CTL(opt_utrace)},
{NAME("xmalloc"), CTL(opt_xmalloc)},
{NAME("experimental_infallible_new"),
CTL(opt_experimental_infallible_new)},
{NAME("tcache"), CTL(opt_tcache)},
{NAME("tcache_max"), CTL(opt_tcache_max)},
{NAME("tcache_nslots_small_min"),
CTL(opt_tcache_nslots_small_min)},
{NAME("tcache_nslots_small_max"),
CTL(opt_tcache_nslots_small_max)},
{NAME("tcache_nslots_large"), CTL(opt_tcache_nslots_large)},
{NAME("lg_tcache_nslots_mul"), CTL(opt_lg_tcache_nslots_mul)},
{NAME("tcache_gc_incr_bytes"), CTL(opt_tcache_gc_incr_bytes)},
{NAME("tcache_gc_delay_bytes"), CTL(opt_tcache_gc_delay_bytes)},
{NAME("lg_tcache_flush_small_div"),
CTL(opt_lg_tcache_flush_small_div)},
{NAME("lg_tcache_flush_large_div"),
CTL(opt_lg_tcache_flush_large_div)},
{NAME("thp"), CTL(opt_thp)},
{NAME("lg_extent_max_active_fit"), CTL(opt_lg_extent_max_active_fit)},
{NAME("prof"), CTL(opt_prof)},
{NAME("prof_prefix"), CTL(opt_prof_prefix)},
{NAME("prof_active"), CTL(opt_prof_active)},
{NAME("prof_thread_active_init"), CTL(opt_prof_thread_active_init)},
{NAME("lg_prof_sample"), CTL(opt_lg_prof_sample)},
{NAME("lg_prof_interval"), CTL(opt_lg_prof_interval)},
{NAME("prof_gdump"), CTL(opt_prof_gdump)},
{NAME("prof_final"), CTL(opt_prof_final)},
{NAME("prof_leak"), CTL(opt_prof_leak)},
{NAME("prof_leak_error"), CTL(opt_prof_leak_error)},
{NAME("prof_accum"), CTL(opt_prof_accum)},
{NAME("prof_recent_alloc_max"), CTL(opt_prof_recent_alloc_max)},
{NAME("prof_stats"), CTL(opt_prof_stats)},
{NAME("prof_sys_thread_name"), CTL(opt_prof_sys_thread_name)},
{NAME("prof_time_resolution"), CTL(opt_prof_time_res)},
{NAME("lg_san_uaf_align"), CTL(opt_lg_san_uaf_align)},
{NAME("zero_realloc"), CTL(opt_zero_realloc)}
};
static const ctl_named_node_t tcache_node[] = {
{NAME("create"), CTL(tcache_create)},
{NAME("flush"), CTL(tcache_flush)},
{NAME("destroy"), CTL(tcache_destroy)}
};
static const ctl_named_node_t arena_i_node[] = {
{NAME("initialized"), CTL(arena_i_initialized)},
{NAME("decay"), CTL(arena_i_decay)},
{NAME("purge"), CTL(arena_i_purge)},
{NAME("reset"), CTL(arena_i_reset)},
{NAME("destroy"), CTL(arena_i_destroy)},
{NAME("dss"), CTL(arena_i_dss)},
/*
* Undocumented for now, since we anticipate an arena API in flux after
* we cut the last 5-series release.
*/
{NAME("oversize_threshold"), CTL(arena_i_oversize_threshold)},
{NAME("dirty_decay_ms"), CTL(arena_i_dirty_decay_ms)},
{NAME("muzzy_decay_ms"), CTL(arena_i_muzzy_decay_ms)},
{NAME("extent_hooks"), CTL(arena_i_extent_hooks)},
{NAME("retain_grow_limit"), CTL(arena_i_retain_grow_limit)}
};
static const ctl_named_node_t super_arena_i_node[] = {
{NAME(""), CHILD(named, arena_i)}
};
static const ctl_indexed_node_t arena_node[] = {
{INDEX(arena_i)}
};
static const ctl_named_node_t arenas_bin_i_node[] = {
{NAME("size"), CTL(arenas_bin_i_size)},
{NAME("nregs"), CTL(arenas_bin_i_nregs)},
{NAME("slab_size"), CTL(arenas_bin_i_slab_size)},
{NAME("nshards"), CTL(arenas_bin_i_nshards)}
};
static const ctl_named_node_t super_arenas_bin_i_node[] = {
{NAME(""), CHILD(named, arenas_bin_i)}
};
static const ctl_indexed_node_t arenas_bin_node[] = {
{INDEX(arenas_bin_i)}
};
static const ctl_named_node_t arenas_lextent_i_node[] = {
{NAME("size"), CTL(arenas_lextent_i_size)}
};
static const ctl_named_node_t super_arenas_lextent_i_node[] = {
{NAME(""), CHILD(named, arenas_lextent_i)}
};
static const ctl_indexed_node_t arenas_lextent_node[] = {
{INDEX(arenas_lextent_i)}
};
static const ctl_named_node_t arenas_node[] = {
{NAME("narenas"), CTL(arenas_narenas)},
{NAME("dirty_decay_ms"), CTL(arenas_dirty_decay_ms)},
{NAME("muzzy_decay_ms"), CTL(arenas_muzzy_decay_ms)},
{NAME("quantum"), CTL(arenas_quantum)},
{NAME("page"), CTL(arenas_page)},
{NAME("tcache_max"), CTL(arenas_tcache_max)},
{NAME("nbins"), CTL(arenas_nbins)},
{NAME("nhbins"), CTL(arenas_nhbins)},
{NAME("bin"), CHILD(indexed, arenas_bin)},
{NAME("nlextents"), CTL(arenas_nlextents)},
{NAME("lextent"), CHILD(indexed, arenas_lextent)},
{NAME("create"), CTL(arenas_create)},
{NAME("lookup"), CTL(arenas_lookup)}
};
static const ctl_named_node_t prof_stats_bins_i_node[] = {
{NAME("live"), CTL(prof_stats_bins_i_live)},
{NAME("accum"), CTL(prof_stats_bins_i_accum)}
};
static const ctl_named_node_t super_prof_stats_bins_i_node[] = {
{NAME(""), CHILD(named, prof_stats_bins_i)}
};
static const ctl_indexed_node_t prof_stats_bins_node[] = {
{INDEX(prof_stats_bins_i)}
};
static const ctl_named_node_t prof_stats_lextents_i_node[] = {
{NAME("live"), CTL(prof_stats_lextents_i_live)},
{NAME("accum"), CTL(prof_stats_lextents_i_accum)}
};
static const ctl_named_node_t super_prof_stats_lextents_i_node[] = {
{NAME(""), CHILD(named, prof_stats_lextents_i)}
};
static const ctl_indexed_node_t prof_stats_lextents_node[] = {
{INDEX(prof_stats_lextents_i)}
};
static const ctl_named_node_t prof_stats_node[] = {
{NAME("bins"), CHILD(indexed, prof_stats_bins)},
{NAME("lextents"), CHILD(indexed, prof_stats_lextents)},
};
static const ctl_named_node_t prof_node[] = {
{NAME("thread_active_init"), CTL(prof_thread_active_init)},
{NAME("active"), CTL(prof_active)},
{NAME("dump"), CTL(prof_dump)},
{NAME("gdump"), CTL(prof_gdump)},
{NAME("prefix"), CTL(prof_prefix)},
{NAME("reset"), CTL(prof_reset)},
{NAME("interval"), CTL(prof_interval)},
{NAME("lg_sample"), CTL(lg_prof_sample)},
{NAME("log_start"), CTL(prof_log_start)},
{NAME("log_stop"), CTL(prof_log_stop)},
{NAME("stats"), CHILD(named, prof_stats)}
};
static const ctl_named_node_t stats_arenas_i_small_node[] = {
{NAME("allocated"), CTL(stats_arenas_i_small_allocated)},
{NAME("nmalloc"), CTL(stats_arenas_i_small_nmalloc)},
{NAME("ndalloc"), CTL(stats_arenas_i_small_ndalloc)},
{NAME("nrequests"), CTL(stats_arenas_i_small_nrequests)},
{NAME("nfills"), CTL(stats_arenas_i_small_nfills)},
{NAME("nflushes"), CTL(stats_arenas_i_small_nflushes)}
};
static const ctl_named_node_t stats_arenas_i_large_node[] = {
{NAME("allocated"), CTL(stats_arenas_i_large_allocated)},
{NAME("nmalloc"), CTL(stats_arenas_i_large_nmalloc)},
{NAME("ndalloc"), CTL(stats_arenas_i_large_ndalloc)},
{NAME("nrequests"), CTL(stats_arenas_i_large_nrequests)},
{NAME("nfills"), CTL(stats_arenas_i_large_nfills)},
{NAME("nflushes"), CTL(stats_arenas_i_large_nflushes)}
};
#define MUTEX_PROF_DATA_NODE(prefix) \
static const ctl_named_node_t stats_##prefix##_node[] = { \
{NAME("num_ops"), \
CTL(stats_##prefix##_num_ops)}, \
{NAME("num_wait"), \
CTL(stats_##prefix##_num_wait)}, \
{NAME("num_spin_acq"), \
CTL(stats_##prefix##_num_spin_acq)}, \
{NAME("num_owner_switch"), \
CTL(stats_##prefix##_num_owner_switch)}, \
{NAME("total_wait_time"), \
CTL(stats_##prefix##_total_wait_time)}, \
{NAME("max_wait_time"), \
CTL(stats_##prefix##_max_wait_time)}, \
{NAME("max_num_thds"), \
CTL(stats_##prefix##_max_num_thds)} \
/* Note that # of current waiting thread not provided. */ \
};
MUTEX_PROF_DATA_NODE(arenas_i_bins_j_mutex)
static const ctl_named_node_t stats_arenas_i_bins_j_node[] = {
{NAME("nmalloc"), CTL(stats_arenas_i_bins_j_nmalloc)},
{NAME("ndalloc"), CTL(stats_arenas_i_bins_j_ndalloc)},
{NAME("nrequests"), CTL(stats_arenas_i_bins_j_nrequests)},
{NAME("curregs"), CTL(stats_arenas_i_bins_j_curregs)},
{NAME("nfills"), CTL(stats_arenas_i_bins_j_nfills)},
{NAME("nflushes"), CTL(stats_arenas_i_bins_j_nflushes)},
{NAME("nslabs"), CTL(stats_arenas_i_bins_j_nslabs)},
{NAME("nreslabs"), CTL(stats_arenas_i_bins_j_nreslabs)},
{NAME("curslabs"), CTL(stats_arenas_i_bins_j_curslabs)},
{NAME("nonfull_slabs"), CTL(stats_arenas_i_bins_j_nonfull_slabs)},
{NAME("mutex"), CHILD(named, stats_arenas_i_bins_j_mutex)}
};
static const ctl_named_node_t super_stats_arenas_i_bins_j_node[] = {
{NAME(""), CHILD(named, stats_arenas_i_bins_j)}
};
static const ctl_indexed_node_t stats_arenas_i_bins_node[] = {
{INDEX(stats_arenas_i_bins_j)}
};
static const ctl_named_node_t stats_arenas_i_lextents_j_node[] = {
{NAME("nmalloc"), CTL(stats_arenas_i_lextents_j_nmalloc)},
{NAME("ndalloc"), CTL(stats_arenas_i_lextents_j_ndalloc)},
{NAME("nrequests"), CTL(stats_arenas_i_lextents_j_nrequests)},
{NAME("curlextents"), CTL(stats_arenas_i_lextents_j_curlextents)}
};
static const ctl_named_node_t super_stats_arenas_i_lextents_j_node[] = {
{NAME(""), CHILD(named, stats_arenas_i_lextents_j)}
};
static const ctl_indexed_node_t stats_arenas_i_lextents_node[] = {
{INDEX(stats_arenas_i_lextents_j)}
};
static const ctl_named_node_t stats_arenas_i_extents_j_node[] = {
{NAME("ndirty"), CTL(stats_arenas_i_extents_j_ndirty)},
{NAME("nmuzzy"), CTL(stats_arenas_i_extents_j_nmuzzy)},
{NAME("nretained"), CTL(stats_arenas_i_extents_j_nretained)},
{NAME("dirty_bytes"), CTL(stats_arenas_i_extents_j_dirty_bytes)},
{NAME("muzzy_bytes"), CTL(stats_arenas_i_extents_j_muzzy_bytes)},
{NAME("retained_bytes"), CTL(stats_arenas_i_extents_j_retained_bytes)}
};
static const ctl_named_node_t super_stats_arenas_i_extents_j_node[] = {
{NAME(""), CHILD(named, stats_arenas_i_extents_j)}
};
static const ctl_indexed_node_t stats_arenas_i_extents_node[] = {
{INDEX(stats_arenas_i_extents_j)}
};
#define OP(mtx) MUTEX_PROF_DATA_NODE(arenas_i_mutexes_##mtx)
MUTEX_PROF_ARENA_MUTEXES
#undef OP
static const ctl_named_node_t stats_arenas_i_mutexes_node[] = {
#define OP(mtx) {NAME(#mtx), CHILD(named, stats_arenas_i_mutexes_##mtx)},
MUTEX_PROF_ARENA_MUTEXES
#undef OP
};
static const ctl_named_node_t stats_arenas_i_hpa_shard_full_slabs_node[] = {
{NAME("npageslabs_nonhuge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge)},
{NAME("npageslabs_huge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge)},
{NAME("nactive_nonhuge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge)},
{NAME("nactive_huge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_nactive_huge)},
{NAME("ndirty_nonhuge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge)},
{NAME("ndirty_huge"),
CTL(stats_arenas_i_hpa_shard_full_slabs_ndirty_huge)}
};
static const ctl_named_node_t stats_arenas_i_hpa_shard_empty_slabs_node[] = {
{NAME("npageslabs_nonhuge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge)},
{NAME("npageslabs_huge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge)},
{NAME("nactive_nonhuge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge)},
{NAME("nactive_huge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_nactive_huge)},
{NAME("ndirty_nonhuge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge)},
{NAME("ndirty_huge"),
CTL(stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge)}
};
static const ctl_named_node_t stats_arenas_i_hpa_shard_nonfull_slabs_j_node[] = {
{NAME("npageslabs_nonhuge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge)},
{NAME("npageslabs_huge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge)},
{NAME("nactive_nonhuge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge)},
{NAME("nactive_huge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge)},
{NAME("ndirty_nonhuge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge)},
{NAME("ndirty_huge"),
CTL(stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge)}
};
static const ctl_named_node_t super_stats_arenas_i_hpa_shard_nonfull_slabs_j_node[] = {
{NAME(""),
CHILD(named, stats_arenas_i_hpa_shard_nonfull_slabs_j)}
};
static const ctl_indexed_node_t stats_arenas_i_hpa_shard_nonfull_slabs_node[] =
{
{INDEX(stats_arenas_i_hpa_shard_nonfull_slabs_j)}
};
static const ctl_named_node_t stats_arenas_i_hpa_shard_node[] = {
{NAME("full_slabs"), CHILD(named,
stats_arenas_i_hpa_shard_full_slabs)},
{NAME("empty_slabs"), CHILD(named,
stats_arenas_i_hpa_shard_empty_slabs)},
{NAME("nonfull_slabs"), CHILD(indexed,
stats_arenas_i_hpa_shard_nonfull_slabs)},
{NAME("npurge_passes"), CTL(stats_arenas_i_hpa_shard_npurge_passes)},
{NAME("npurges"), CTL(stats_arenas_i_hpa_shard_npurges)},
{NAME("nhugifies"), CTL(stats_arenas_i_hpa_shard_nhugifies)},
{NAME("ndehugifies"), CTL(stats_arenas_i_hpa_shard_ndehugifies)}
};
static const ctl_named_node_t stats_arenas_i_node[] = {
{NAME("nthreads"), CTL(stats_arenas_i_nthreads)},
{NAME("uptime"), CTL(stats_arenas_i_uptime)},
{NAME("dss"), CTL(stats_arenas_i_dss)},
{NAME("dirty_decay_ms"), CTL(stats_arenas_i_dirty_decay_ms)},
{NAME("muzzy_decay_ms"), CTL(stats_arenas_i_muzzy_decay_ms)},
{NAME("pactive"), CTL(stats_arenas_i_pactive)},
{NAME("pdirty"), CTL(stats_arenas_i_pdirty)},
{NAME("pmuzzy"), CTL(stats_arenas_i_pmuzzy)},
{NAME("mapped"), CTL(stats_arenas_i_mapped)},
{NAME("retained"), CTL(stats_arenas_i_retained)},
{NAME("extent_avail"), CTL(stats_arenas_i_extent_avail)},
{NAME("dirty_npurge"), CTL(stats_arenas_i_dirty_npurge)},
{NAME("dirty_nmadvise"), CTL(stats_arenas_i_dirty_nmadvise)},
{NAME("dirty_purged"), CTL(stats_arenas_i_dirty_purged)},
{NAME("muzzy_npurge"), CTL(stats_arenas_i_muzzy_npurge)},
{NAME("muzzy_nmadvise"), CTL(stats_arenas_i_muzzy_nmadvise)},
{NAME("muzzy_purged"), CTL(stats_arenas_i_muzzy_purged)},
{NAME("base"), CTL(stats_arenas_i_base)},
{NAME("internal"), CTL(stats_arenas_i_internal)},
{NAME("metadata_thp"), CTL(stats_arenas_i_metadata_thp)},
{NAME("tcache_bytes"), CTL(stats_arenas_i_tcache_bytes)},
{NAME("tcache_stashed_bytes"),
CTL(stats_arenas_i_tcache_stashed_bytes)},
{NAME("resident"), CTL(stats_arenas_i_resident)},
{NAME("abandoned_vm"), CTL(stats_arenas_i_abandoned_vm)},
{NAME("hpa_sec_bytes"), CTL(stats_arenas_i_hpa_sec_bytes)},
{NAME("small"), CHILD(named, stats_arenas_i_small)},
{NAME("large"), CHILD(named, stats_arenas_i_large)},
{NAME("bins"), CHILD(indexed, stats_arenas_i_bins)},
{NAME("lextents"), CHILD(indexed, stats_arenas_i_lextents)},
{NAME("extents"), CHILD(indexed, stats_arenas_i_extents)},
{NAME("mutexes"), CHILD(named, stats_arenas_i_mutexes)},
{NAME("hpa_shard"), CHILD(named, stats_arenas_i_hpa_shard)}
};
static const ctl_named_node_t super_stats_arenas_i_node[] = {
{NAME(""), CHILD(named, stats_arenas_i)}
};
static const ctl_indexed_node_t stats_arenas_node[] = {
{INDEX(stats_arenas_i)}
};
static const ctl_named_node_t stats_background_thread_node[] = {
{NAME("num_threads"), CTL(stats_background_thread_num_threads)},
{NAME("num_runs"), CTL(stats_background_thread_num_runs)},
{NAME("run_interval"), CTL(stats_background_thread_run_interval)}
};
#define OP(mtx) MUTEX_PROF_DATA_NODE(mutexes_##mtx)
MUTEX_PROF_GLOBAL_MUTEXES
#undef OP
static const ctl_named_node_t stats_mutexes_node[] = {
#define OP(mtx) {NAME(#mtx), CHILD(named, stats_mutexes_##mtx)},
MUTEX_PROF_GLOBAL_MUTEXES
#undef OP
{NAME("reset"), CTL(stats_mutexes_reset)}
};
#undef MUTEX_PROF_DATA_NODE
static const ctl_named_node_t stats_node[] = {
{NAME("allocated"), CTL(stats_allocated)},
{NAME("active"), CTL(stats_active)},
{NAME("metadata"), CTL(stats_metadata)},
{NAME("metadata_thp"), CTL(stats_metadata_thp)},
{NAME("resident"), CTL(stats_resident)},
{NAME("mapped"), CTL(stats_mapped)},
{NAME("retained"), CTL(stats_retained)},
{NAME("background_thread"),
CHILD(named, stats_background_thread)},
{NAME("mutexes"), CHILD(named, stats_mutexes)},
{NAME("arenas"), CHILD(indexed, stats_arenas)},
{NAME("zero_reallocs"), CTL(stats_zero_reallocs)},
};
static const ctl_named_node_t experimental_hooks_node[] = {
{NAME("install"), CTL(experimental_hooks_install)},
{NAME("remove"), CTL(experimental_hooks_remove)},
{NAME("prof_backtrace"), CTL(experimental_hooks_prof_backtrace)},
{NAME("prof_dump"), CTL(experimental_hooks_prof_dump)},
{NAME("safety_check_abort"), CTL(experimental_hooks_safety_check_abort)},
};
static const ctl_named_node_t experimental_thread_node[] = {
{NAME("activity_callback"),
CTL(experimental_thread_activity_callback)}
};
static const ctl_named_node_t experimental_utilization_node[] = {
{NAME("query"), CTL(experimental_utilization_query)},
{NAME("batch_query"), CTL(experimental_utilization_batch_query)}
};
static const ctl_named_node_t experimental_arenas_i_node[] = {
{NAME("pactivep"), CTL(experimental_arenas_i_pactivep)}
};
static const ctl_named_node_t super_experimental_arenas_i_node[] = {
{NAME(""), CHILD(named, experimental_arenas_i)}
};
static const ctl_indexed_node_t experimental_arenas_node[] = {
{INDEX(experimental_arenas_i)}
};
static const ctl_named_node_t experimental_prof_recent_node[] = {
{NAME("alloc_max"), CTL(experimental_prof_recent_alloc_max)},
{NAME("alloc_dump"), CTL(experimental_prof_recent_alloc_dump)},
};
static const ctl_named_node_t experimental_node[] = {
{NAME("hooks"), CHILD(named, experimental_hooks)},
{NAME("utilization"), CHILD(named, experimental_utilization)},
{NAME("arenas"), CHILD(indexed, experimental_arenas)},
{NAME("arenas_create_ext"), CTL(experimental_arenas_create_ext)},
{NAME("prof_recent"), CHILD(named, experimental_prof_recent)},
{NAME("batch_alloc"), CTL(experimental_batch_alloc)},
{NAME("thread"), CHILD(named, experimental_thread)}
};
static const ctl_named_node_t root_node[] = {
{NAME("version"), CTL(version)},
{NAME("epoch"), CTL(epoch)},
{NAME("background_thread"), CTL(background_thread)},
{NAME("max_background_threads"), CTL(max_background_threads)},
{NAME("thread"), CHILD(named, thread)},
{NAME("config"), CHILD(named, config)},
{NAME("opt"), CHILD(named, opt)},
{NAME("tcache"), CHILD(named, tcache)},
{NAME("arena"), CHILD(indexed, arena)},
{NAME("arenas"), CHILD(named, arenas)},
{NAME("prof"), CHILD(named, prof)},
{NAME("stats"), CHILD(named, stats)},
{NAME("experimental"), CHILD(named, experimental)}
};
static const ctl_named_node_t super_root_node[] = {
{NAME(""), CHILD(named, root)}
};
#undef NAME
#undef CHILD
#undef CTL
#undef INDEX
/******************************************************************************/
/*
* Sets *dst + *src non-atomically. This is safe, since everything is
* synchronized by the ctl mutex.
*/
static void
ctl_accum_locked_u64(locked_u64_t *dst, locked_u64_t *src) {
locked_inc_u64_unsynchronized(dst,
locked_read_u64_unsynchronized(src));
}
static void
ctl_accum_atomic_zu(atomic_zu_t *dst, atomic_zu_t *src) {
size_t cur_dst = atomic_load_zu(dst, ATOMIC_RELAXED);
size_t cur_src = atomic_load_zu(src, ATOMIC_RELAXED);
atomic_store_zu(dst, cur_dst + cur_src, ATOMIC_RELAXED);
}
/******************************************************************************/
static unsigned
arenas_i2a_impl(size_t i, bool compat, bool validate) {
unsigned a;
switch (i) {
case MALLCTL_ARENAS_ALL:
a = 0;
break;
case MALLCTL_ARENAS_DESTROYED:
a = 1;
break;
default:
if (compat && i == ctl_arenas->narenas) {
/*
* Provide deprecated backward compatibility for
* accessing the merged stats at index narenas rather
* than via MALLCTL_ARENAS_ALL. This is scheduled for
* removal in 6.0.0.
*/
a = 0;
} else if (validate && i >= ctl_arenas->narenas) {
a = UINT_MAX;
} else {
/*
* This function should never be called for an index
* more than one past the range of indices that have
* initialized ctl data.
*/
assert(i < ctl_arenas->narenas || (!validate && i ==
ctl_arenas->narenas));
a = (unsigned)i + 2;
}
break;
}
return a;
}
static unsigned
arenas_i2a(size_t i) {
return arenas_i2a_impl(i, true, false);
}
static ctl_arena_t *
arenas_i_impl(tsd_t *tsd, size_t i, bool compat, bool init) {
ctl_arena_t *ret;
assert(!compat || !init);
ret = ctl_arenas->arenas[arenas_i2a_impl(i, compat, false)];
if (init && ret == NULL) {
if (config_stats) {
struct container_s {
ctl_arena_t ctl_arena;
ctl_arena_stats_t astats;
};
struct container_s *cont =
(struct container_s *)base_alloc(tsd_tsdn(tsd),
b0get(), sizeof(struct container_s), QUANTUM);
if (cont == NULL) {
return NULL;
}
ret = &cont->ctl_arena;
ret->astats = &cont->astats;
} else {
ret = (ctl_arena_t *)base_alloc(tsd_tsdn(tsd), b0get(),
sizeof(ctl_arena_t), QUANTUM);
if (ret == NULL) {
return NULL;
}
}
ret->arena_ind = (unsigned)i;
ctl_arenas->arenas[arenas_i2a_impl(i, compat, false)] = ret;
}
assert(ret == NULL || arenas_i2a(ret->arena_ind) == arenas_i2a(i));
return ret;
}
static ctl_arena_t *
arenas_i(size_t i) {
ctl_arena_t *ret = arenas_i_impl(tsd_fetch(), i, true, false);
assert(ret != NULL);
return ret;
}
static void
ctl_arena_clear(ctl_arena_t *ctl_arena) {
ctl_arena->nthreads = 0;
ctl_arena->dss = dss_prec_names[dss_prec_limit];
ctl_arena->dirty_decay_ms = -1;
ctl_arena->muzzy_decay_ms = -1;
ctl_arena->pactive = 0;
ctl_arena->pdirty = 0;
ctl_arena->pmuzzy = 0;
if (config_stats) {
memset(&ctl_arena->astats->astats, 0, sizeof(arena_stats_t));
ctl_arena->astats->allocated_small = 0;
ctl_arena->astats->nmalloc_small = 0;
ctl_arena->astats->ndalloc_small = 0;
ctl_arena->astats->nrequests_small = 0;
ctl_arena->astats->nfills_small = 0;
ctl_arena->astats->nflushes_small = 0;
memset(ctl_arena->astats->bstats, 0, SC_NBINS *
sizeof(bin_stats_data_t));
memset(ctl_arena->astats->lstats, 0, (SC_NSIZES - SC_NBINS) *
sizeof(arena_stats_large_t));
memset(ctl_arena->astats->estats, 0, SC_NPSIZES *
sizeof(pac_estats_t));
memset(&ctl_arena->astats->hpastats, 0,
sizeof(hpa_shard_stats_t));
memset(&ctl_arena->astats->secstats, 0,
sizeof(sec_stats_t));
}
}
static void
ctl_arena_stats_amerge(tsdn_t *tsdn, ctl_arena_t *ctl_arena, arena_t *arena) {
unsigned i;
if (config_stats) {
arena_stats_merge(tsdn, arena, &ctl_arena->nthreads,
&ctl_arena->dss, &ctl_arena->dirty_decay_ms,
&ctl_arena->muzzy_decay_ms, &ctl_arena->pactive,
&ctl_arena->pdirty, &ctl_arena->pmuzzy,
&ctl_arena->astats->astats, ctl_arena->astats->bstats,
ctl_arena->astats->lstats, ctl_arena->astats->estats,
&ctl_arena->astats->hpastats, &ctl_arena->astats->secstats);
for (i = 0; i < SC_NBINS; i++) {
bin_stats_t *bstats =
&ctl_arena->astats->bstats[i].stats_data;
ctl_arena->astats->allocated_small += bstats->curregs *
sz_index2size(i);
ctl_arena->astats->nmalloc_small += bstats->nmalloc;
ctl_arena->astats->ndalloc_small += bstats->ndalloc;
ctl_arena->astats->nrequests_small += bstats->nrequests;
ctl_arena->astats->nfills_small += bstats->nfills;
ctl_arena->astats->nflushes_small += bstats->nflushes;
}
} else {
arena_basic_stats_merge(tsdn, arena, &ctl_arena->nthreads,
&ctl_arena->dss, &ctl_arena->dirty_decay_ms,
&ctl_arena->muzzy_decay_ms, &ctl_arena->pactive,
&ctl_arena->pdirty, &ctl_arena->pmuzzy);
}
}
static void
ctl_arena_stats_sdmerge(ctl_arena_t *ctl_sdarena, ctl_arena_t *ctl_arena,
bool destroyed) {
unsigned i;
if (!destroyed) {
ctl_sdarena->nthreads += ctl_arena->nthreads;
ctl_sdarena->pactive += ctl_arena->pactive;
ctl_sdarena->pdirty += ctl_arena->pdirty;
ctl_sdarena->pmuzzy += ctl_arena->pmuzzy;
} else {
assert(ctl_arena->nthreads == 0);
assert(ctl_arena->pactive == 0);
assert(ctl_arena->pdirty == 0);
assert(ctl_arena->pmuzzy == 0);
}
if (config_stats) {
ctl_arena_stats_t *sdstats = ctl_sdarena->astats;
ctl_arena_stats_t *astats = ctl_arena->astats;
if (!destroyed) {
sdstats->astats.mapped += astats->astats.mapped;
sdstats->astats.pa_shard_stats.pac_stats.retained
+= astats->astats.pa_shard_stats.pac_stats.retained;
sdstats->astats.pa_shard_stats.edata_avail
+= astats->astats.pa_shard_stats.edata_avail;
}
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge,
&astats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge);
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise,
&astats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise);
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_dirty.purged,
&astats->astats.pa_shard_stats.pac_stats.decay_dirty.purged);
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge,
&astats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge);
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise,
&astats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise);
ctl_accum_locked_u64(
&sdstats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged,
&astats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged);
#define OP(mtx) malloc_mutex_prof_merge( \
&(sdstats->astats.mutex_prof_data[ \
arena_prof_mutex_##mtx]), \
&(astats->astats.mutex_prof_data[ \
arena_prof_mutex_##mtx]));
MUTEX_PROF_ARENA_MUTEXES
#undef OP
if (!destroyed) {
sdstats->astats.base += astats->astats.base;
sdstats->astats.resident += astats->astats.resident;
sdstats->astats.metadata_thp += astats->astats.metadata_thp;
ctl_accum_atomic_zu(&sdstats->astats.internal,
&astats->astats.internal);
} else {
assert(atomic_load_zu(
&astats->astats.internal, ATOMIC_RELAXED) == 0);
}
if (!destroyed) {
sdstats->allocated_small += astats->allocated_small;
} else {
assert(astats->allocated_small == 0);
}
sdstats->nmalloc_small += astats->nmalloc_small;
sdstats->ndalloc_small += astats->ndalloc_small;
sdstats->nrequests_small += astats->nrequests_small;
sdstats->nfills_small += astats->nfills_small;
sdstats->nflushes_small += astats->nflushes_small;
if (!destroyed) {
sdstats->astats.allocated_large +=
astats->astats.allocated_large;
} else {
assert(astats->astats.allocated_large == 0);
}
sdstats->astats.nmalloc_large += astats->astats.nmalloc_large;
sdstats->astats.ndalloc_large += astats->astats.ndalloc_large;
sdstats->astats.nrequests_large
+= astats->astats.nrequests_large;
sdstats->astats.nflushes_large += astats->astats.nflushes_large;
ctl_accum_atomic_zu(
&sdstats->astats.pa_shard_stats.pac_stats.abandoned_vm,
&astats->astats.pa_shard_stats.pac_stats.abandoned_vm);
sdstats->astats.tcache_bytes += astats->astats.tcache_bytes;
sdstats->astats.tcache_stashed_bytes +=
astats->astats.tcache_stashed_bytes;
if (ctl_arena->arena_ind == 0) {
sdstats->astats.uptime = astats->astats.uptime;
}
/* Merge bin stats. */
for (i = 0; i < SC_NBINS; i++) {
bin_stats_t *bstats = &astats->bstats[i].stats_data;
bin_stats_t *merged = &sdstats->bstats[i].stats_data;
merged->nmalloc += bstats->nmalloc;
merged->ndalloc += bstats->ndalloc;
merged->nrequests += bstats->nrequests;
if (!destroyed) {
merged->curregs += bstats->curregs;
} else {
assert(bstats->curregs == 0);
}
merged->nfills += bstats->nfills;
merged->nflushes += bstats->nflushes;
merged->nslabs += bstats->nslabs;
merged->reslabs += bstats->reslabs;
if (!destroyed) {
merged->curslabs += bstats->curslabs;
merged->nonfull_slabs += bstats->nonfull_slabs;
} else {
assert(bstats->curslabs == 0);
assert(bstats->nonfull_slabs == 0);
}
malloc_mutex_prof_merge(&sdstats->bstats[i].mutex_data,
&astats->bstats[i].mutex_data);
}
/* Merge stats for large allocations. */
for (i = 0; i < SC_NSIZES - SC_NBINS; i++) {
ctl_accum_locked_u64(&sdstats->lstats[i].nmalloc,
&astats->lstats[i].nmalloc);
ctl_accum_locked_u64(&sdstats->lstats[i].ndalloc,
&astats->lstats[i].ndalloc);
ctl_accum_locked_u64(&sdstats->lstats[i].nrequests,
&astats->lstats[i].nrequests);
if (!destroyed) {
sdstats->lstats[i].curlextents +=
astats->lstats[i].curlextents;
} else {
assert(astats->lstats[i].curlextents == 0);
}
}
/* Merge extents stats. */
for (i = 0; i < SC_NPSIZES; i++) {
sdstats->estats[i].ndirty += astats->estats[i].ndirty;
sdstats->estats[i].nmuzzy += astats->estats[i].nmuzzy;
sdstats->estats[i].nretained
+= astats->estats[i].nretained;
sdstats->estats[i].dirty_bytes
+= astats->estats[i].dirty_bytes;
sdstats->estats[i].muzzy_bytes
+= astats->estats[i].muzzy_bytes;
sdstats->estats[i].retained_bytes
+= astats->estats[i].retained_bytes;
}
/* Merge HPA stats. */
hpa_shard_stats_accum(&sdstats->hpastats, &astats->hpastats);
sec_stats_accum(&sdstats->secstats, &astats->secstats);
}
}
static void
ctl_arena_refresh(tsdn_t *tsdn, arena_t *arena, ctl_arena_t *ctl_sdarena,
unsigned i, bool destroyed) {
ctl_arena_t *ctl_arena = arenas_i(i);
ctl_arena_clear(ctl_arena);
ctl_arena_stats_amerge(tsdn, ctl_arena, arena);
/* Merge into sum stats as well. */
ctl_arena_stats_sdmerge(ctl_sdarena, ctl_arena, destroyed);
}
static unsigned
ctl_arena_init(tsd_t *tsd, const arena_config_t *config) {
unsigned arena_ind;
ctl_arena_t *ctl_arena;
if ((ctl_arena = ql_last(&ctl_arenas->destroyed, destroyed_link)) !=
NULL) {
ql_remove(&ctl_arenas->destroyed, ctl_arena, destroyed_link);
arena_ind = ctl_arena->arena_ind;
} else {
arena_ind = ctl_arenas->narenas;
}
/* Trigger stats allocation. */
if (arenas_i_impl(tsd, arena_ind, false, true) == NULL) {
return UINT_MAX;
}
/* Initialize new arena. */
if (arena_init(tsd_tsdn(tsd), arena_ind, config) == NULL) {
return UINT_MAX;
}
if (arena_ind == ctl_arenas->narenas) {
ctl_arenas->narenas++;
}
return arena_ind;
}
static void
ctl_background_thread_stats_read(tsdn_t *tsdn) {
background_thread_stats_t *stats = &ctl_stats->background_thread;
if (!have_background_thread ||
background_thread_stats_read(tsdn, stats)) {
memset(stats, 0, sizeof(background_thread_stats_t));
nstime_init_zero(&stats->run_interval);
}
malloc_mutex_prof_copy(
&ctl_stats->mutex_prof_data[global_prof_mutex_max_per_bg_thd],
&stats->max_counter_per_bg_thd);
}
static void
ctl_refresh(tsdn_t *tsdn) {
unsigned i;
ctl_arena_t *ctl_sarena = arenas_i(MALLCTL_ARENAS_ALL);
VARIABLE_ARRAY(arena_t *, tarenas, ctl_arenas->narenas);
/*
* Clear sum stats, since they will be merged into by
* ctl_arena_refresh().
*/
ctl_arena_clear(ctl_sarena);
for (i = 0; i < ctl_arenas->narenas; i++) {
tarenas[i] = arena_get(tsdn, i, false);
}
for (i = 0; i < ctl_arenas->narenas; i++) {
ctl_arena_t *ctl_arena = arenas_i(i);
bool initialized = (tarenas[i] != NULL);
ctl_arena->initialized = initialized;
if (initialized) {
ctl_arena_refresh(tsdn, tarenas[i], ctl_sarena, i,
false);
}
}
if (config_stats) {
ctl_stats->allocated = ctl_sarena->astats->allocated_small +
ctl_sarena->astats->astats.allocated_large;
ctl_stats->active = (ctl_sarena->pactive << LG_PAGE);
ctl_stats->metadata = ctl_sarena->astats->astats.base +
atomic_load_zu(&ctl_sarena->astats->astats.internal,
ATOMIC_RELAXED);
ctl_stats->resident = ctl_sarena->astats->astats.resident;
ctl_stats->metadata_thp =
ctl_sarena->astats->astats.metadata_thp;
ctl_stats->mapped = ctl_sarena->astats->astats.mapped;
ctl_stats->retained = ctl_sarena->astats->astats
.pa_shard_stats.pac_stats.retained;
ctl_background_thread_stats_read(tsdn);
#define READ_GLOBAL_MUTEX_PROF_DATA(i, mtx) \
malloc_mutex_lock(tsdn, &mtx); \
malloc_mutex_prof_read(tsdn, &ctl_stats->mutex_prof_data[i], &mtx); \
malloc_mutex_unlock(tsdn, &mtx);
if (config_prof && opt_prof) {
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof, bt2gctx_mtx);
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof_thds_data, tdatas_mtx);
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof_dump, prof_dump_mtx);
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof_recent_alloc,
prof_recent_alloc_mtx);
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof_recent_dump,
prof_recent_dump_mtx);
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_prof_stats, prof_stats_mtx);
}
if (have_background_thread) {
READ_GLOBAL_MUTEX_PROF_DATA(
global_prof_mutex_background_thread,
background_thread_lock);
} else {
memset(&ctl_stats->mutex_prof_data[
global_prof_mutex_background_thread], 0,
sizeof(mutex_prof_data_t));
}
/* We own ctl mutex already. */
malloc_mutex_prof_read(tsdn,
&ctl_stats->mutex_prof_data[global_prof_mutex_ctl],
&ctl_mtx);
#undef READ_GLOBAL_MUTEX_PROF_DATA
}
ctl_arenas->epoch++;
}
static bool
ctl_init(tsd_t *tsd) {
bool ret;
tsdn_t *tsdn = tsd_tsdn(tsd);
malloc_mutex_lock(tsdn, &ctl_mtx);
if (!ctl_initialized) {
ctl_arena_t *ctl_sarena, *ctl_darena;
unsigned i;
/*
* Allocate demand-zeroed space for pointers to the full
* range of supported arena indices.
*/
if (ctl_arenas == NULL) {
ctl_arenas = (ctl_arenas_t *)base_alloc(tsdn,
b0get(), sizeof(ctl_arenas_t), QUANTUM);
if (ctl_arenas == NULL) {
ret = true;
goto label_return;
}
}
if (config_stats && ctl_stats == NULL) {
ctl_stats = (ctl_stats_t *)base_alloc(tsdn, b0get(),
sizeof(ctl_stats_t), QUANTUM);
if (ctl_stats == NULL) {
ret = true;
goto label_return;
}
}
/*
* Allocate space for the current full range of arenas
* here rather than doing it lazily elsewhere, in order
* to limit when OOM-caused errors can occur.
*/
if ((ctl_sarena = arenas_i_impl(tsd, MALLCTL_ARENAS_ALL, false,
true)) == NULL) {
ret = true;
goto label_return;
}
ctl_sarena->initialized = true;
if ((ctl_darena = arenas_i_impl(tsd, MALLCTL_ARENAS_DESTROYED,
false, true)) == NULL) {
ret = true;
goto label_return;
}
ctl_arena_clear(ctl_darena);
/*
* Don't toggle ctl_darena to initialized until an arena is
* actually destroyed, so that arena.<i>.initialized can be used
* to query whether the stats are relevant.
*/
ctl_arenas->narenas = narenas_total_get();
for (i = 0; i < ctl_arenas->narenas; i++) {
if (arenas_i_impl(tsd, i, false, true) == NULL) {
ret = true;
goto label_return;
}
}
ql_new(&ctl_arenas->destroyed);
ctl_refresh(tsdn);
ctl_initialized = true;
}
ret = false;
label_return:
malloc_mutex_unlock(tsdn, &ctl_mtx);
return ret;
}
static int
ctl_lookup(tsdn_t *tsdn, const ctl_named_node_t *starting_node,
const char *name, const ctl_named_node_t **ending_nodep, size_t *mibp,
size_t *depthp) {
int ret;
const char *elm, *tdot, *dot;
size_t elen, i, j;
const ctl_named_node_t *node;
elm = name;
/* Equivalent to strchrnul(). */
dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot : strchr(elm, '\0');
elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
if (elen == 0) {
ret = ENOENT;
goto label_return;
}
node = starting_node;
for (i = 0; i < *depthp; i++) {
assert(node);
assert(node->nchildren > 0);
if (ctl_named_node(node->children) != NULL) {
const ctl_named_node_t *pnode = node;
/* Children are named. */
for (j = 0; j < node->nchildren; j++) {
const ctl_named_node_t *child =
ctl_named_children(node, j);
if (strlen(child->name) == elen &&
strncmp(elm, child->name, elen) == 0) {
node = child;
mibp[i] = j;
break;
}
}
if (node == pnode) {
ret = ENOENT;
goto label_return;
}
} else {
uintmax_t index;
const ctl_indexed_node_t *inode;
/* Children are indexed. */
index = malloc_strtoumax(elm, NULL, 10);
if (index == UINTMAX_MAX || index > SIZE_T_MAX) {
ret = ENOENT;
goto label_return;
}
inode = ctl_indexed_node(node->children);
node = inode->index(tsdn, mibp, *depthp, (size_t)index);
if (node == NULL) {
ret = ENOENT;
goto label_return;
}
mibp[i] = (size_t)index;
}
/* Reached the end? */
if (node->ctl != NULL || *dot == '\0') {
/* Terminal node. */
if (*dot != '\0') {
/*
* The name contains more elements than are
* in this path through the tree.
*/
ret = ENOENT;
goto label_return;
}
/* Complete lookup successful. */
*depthp = i + 1;
break;
}
/* Update elm. */
elm = &dot[1];
dot = ((tdot = strchr(elm, '.')) != NULL) ? tdot :
strchr(elm, '\0');
elen = (size_t)((uintptr_t)dot - (uintptr_t)elm);
}
if (ending_nodep != NULL) {
*ending_nodep = node;
}
ret = 0;
label_return:
return ret;
}
int
ctl_byname(tsd_t *tsd, const char *name, void *oldp, size_t *oldlenp,
void *newp, size_t newlen) {
int ret;
size_t depth;
size_t mib[CTL_MAX_DEPTH];
const ctl_named_node_t *node;
if (!ctl_initialized && ctl_init(tsd)) {
ret = EAGAIN;
goto label_return;
}
depth = CTL_MAX_DEPTH;
ret = ctl_lookup(tsd_tsdn(tsd), super_root_node, name, &node, mib,
&depth);
if (ret != 0) {
goto label_return;
}
if (node != NULL && node->ctl) {
ret = node->ctl(tsd, mib, depth, oldp, oldlenp, newp, newlen);
} else {
/* The name refers to a partial path through the ctl tree. */
ret = ENOENT;
}
label_return:
return(ret);
}
int
ctl_nametomib(tsd_t *tsd, const char *name, size_t *mibp, size_t *miblenp) {
int ret;
if (!ctl_initialized && ctl_init(tsd)) {
ret = EAGAIN;
goto label_return;
}
ret = ctl_lookup(tsd_tsdn(tsd), super_root_node, name, NULL, mibp,
miblenp);
label_return:
return(ret);
}
static int
ctl_lookupbymib(tsdn_t *tsdn, const ctl_named_node_t **ending_nodep,
const size_t *mib, size_t miblen) {
int ret;
const ctl_named_node_t *node = super_root_node;
for (size_t i = 0; i < miblen; i++) {
assert(node);
assert(node->nchildren > 0);
if (ctl_named_node(node->children) != NULL) {
/* Children are named. */
if (node->nchildren <= mib[i]) {
ret = ENOENT;
goto label_return;
}
node = ctl_named_children(node, mib[i]);
} else {
const ctl_indexed_node_t *inode;
/* Indexed element. */
inode = ctl_indexed_node(node->children);
node = inode->index(tsdn, mib, miblen, mib[i]);
if (node == NULL) {
ret = ENOENT;
goto label_return;
}
}
}
assert(ending_nodep != NULL);
*ending_nodep = node;
ret = 0;
label_return:
return(ret);
}
int
ctl_bymib(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const ctl_named_node_t *node;
if (!ctl_initialized && ctl_init(tsd)) {
ret = EAGAIN;
goto label_return;
}
ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
if (ret != 0) {
goto label_return;
}
/* Call the ctl function. */
if (node && node->ctl) {
ret = node->ctl(tsd, mib, miblen, oldp, oldlenp, newp, newlen);
} else {
/* Partial MIB. */
ret = ENOENT;
}
label_return:
return(ret);
}
int
ctl_mibnametomib(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
size_t *miblenp) {
int ret;
const ctl_named_node_t *node;
if (!ctl_initialized && ctl_init(tsd)) {
ret = EAGAIN;
goto label_return;
}
ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
if (ret != 0) {
goto label_return;
}
if (node == NULL || node->ctl != NULL) {
ret = ENOENT;
goto label_return;
}
assert(miblenp != NULL);
assert(*miblenp >= miblen);
*miblenp -= miblen;
ret = ctl_lookup(tsd_tsdn(tsd), node, name, NULL, mib + miblen,
miblenp);
*miblenp += miblen;
label_return:
return(ret);
}
int
ctl_bymibname(tsd_t *tsd, size_t *mib, size_t miblen, const char *name,
size_t *miblenp, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const ctl_named_node_t *node;
if (!ctl_initialized && ctl_init(tsd)) {
ret = EAGAIN;
goto label_return;
}
ret = ctl_lookupbymib(tsd_tsdn(tsd), &node, mib, miblen);
if (ret != 0) {
goto label_return;
}
if (node == NULL || node->ctl != NULL) {
ret = ENOENT;
goto label_return;
}
assert(miblenp != NULL);
assert(*miblenp >= miblen);
*miblenp -= miblen;
/*
* The same node supplies the starting node and stores the ending node.
*/
ret = ctl_lookup(tsd_tsdn(tsd), node, name, &node, mib + miblen,
miblenp);
*miblenp += miblen;
if (ret != 0) {
goto label_return;
}
if (node != NULL && node->ctl) {
ret = node->ctl(tsd, mib, *miblenp, oldp, oldlenp, newp,
newlen);
} else {
/* The name refers to a partial path through the ctl tree. */
ret = ENOENT;
}
label_return:
return(ret);
}
bool
ctl_boot(void) {
if (malloc_mutex_init(&ctl_mtx, "ctl", WITNESS_RANK_CTL,
malloc_mutex_rank_exclusive)) {
return true;
}
ctl_initialized = false;
return false;
}
void
ctl_prefork(tsdn_t *tsdn) {
malloc_mutex_prefork(tsdn, &ctl_mtx);
}
void
ctl_postfork_parent(tsdn_t *tsdn) {
malloc_mutex_postfork_parent(tsdn, &ctl_mtx);
}
void
ctl_postfork_child(tsdn_t *tsdn) {
malloc_mutex_postfork_child(tsdn, &ctl_mtx);
}
void
ctl_mtx_assert_held(tsdn_t *tsdn) {
malloc_mutex_assert_owner(tsdn, &ctl_mtx);
}
/******************************************************************************/
/* *_ctl() functions. */
#define READONLY() do { \
if (newp != NULL || newlen != 0) { \
ret = EPERM; \
goto label_return; \
} \
} while (0)
#define WRITEONLY() do { \
if (oldp != NULL || oldlenp != NULL) { \
ret = EPERM; \
goto label_return; \
} \
} while (0)
/* Can read or write, but not both. */
#define READ_XOR_WRITE() do { \
if ((oldp != NULL && oldlenp != NULL) && (newp != NULL || \
newlen != 0)) { \
ret = EPERM; \
goto label_return; \
} \
} while (0)
/* Can neither read nor write. */
#define NEITHER_READ_NOR_WRITE() do { \
if (oldp != NULL || oldlenp != NULL || newp != NULL || \
newlen != 0) { \
ret = EPERM; \
goto label_return; \
} \
} while (0)
/* Verify that the space provided is enough. */
#define VERIFY_READ(t) do { \
if (oldp == NULL || oldlenp == NULL || *oldlenp != sizeof(t)) { \
*oldlenp = 0; \
ret = EINVAL; \
goto label_return; \
} \
} while (0)
#define READ(v, t) do { \
if (oldp != NULL && oldlenp != NULL) { \
if (*oldlenp != sizeof(t)) { \
size_t copylen = (sizeof(t) <= *oldlenp) \
? sizeof(t) : *oldlenp; \
memcpy(oldp, (void *)&(v), copylen); \
*oldlenp = copylen; \
ret = EINVAL; \
goto label_return; \
} \
*(t *)oldp = (v); \
} \
} while (0)
#define WRITE(v, t) do { \
if (newp != NULL) { \
if (newlen != sizeof(t)) { \
ret = EINVAL; \
goto label_return; \
} \
(v) = *(t *)newp; \
} \
} while (0)
#define ASSURED_WRITE(v, t) do { \
if (newp == NULL || newlen != sizeof(t)) { \
ret = EINVAL; \
goto label_return; \
} \
(v) = *(t *)newp; \
} while (0)
#define MIB_UNSIGNED(v, i) do { \
if (mib[i] > UINT_MAX) { \
ret = EFAULT; \
goto label_return; \
} \
v = (unsigned)mib[i]; \
} while (0)
/*
* There's a lot of code duplication in the following macros due to limitations
* in how nested cpp macros are expanded.
*/
#define CTL_RO_CLGEN(c, l, n, v, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp, \
size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
if (!(c)) { \
return ENOENT; \
} \
if (l) { \
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx); \
} \
READONLY(); \
oldval = (v); \
READ(oldval, t); \
\
ret = 0; \
label_return: \
if (l) { \
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx); \
} \
return ret; \
}
#define CTL_RO_CGEN(c, n, v, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, \
void *oldp, size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
if (!(c)) { \
return ENOENT; \
} \
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx); \
READONLY(); \
oldval = (v); \
READ(oldval, t); \
\
ret = 0; \
label_return: \
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx); \
return ret; \
}
#define CTL_RO_GEN(n, v, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp, \
size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx); \
READONLY(); \
oldval = (v); \
READ(oldval, t); \
\
ret = 0; \
label_return: \
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx); \
return ret; \
}
/*
* ctl_mtx is not acquired, under the assumption that no pertinent data will
* mutate during the call.
*/
#define CTL_RO_NL_CGEN(c, n, v, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, \
void *oldp, size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
if (!(c)) { \
return ENOENT; \
} \
READONLY(); \
oldval = (v); \
READ(oldval, t); \
\
ret = 0; \
label_return: \
return ret; \
}
#define CTL_RO_NL_GEN(n, v, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, \
void *oldp, size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
READONLY(); \
oldval = (v); \
READ(oldval, t); \
\
ret = 0; \
label_return: \
return ret; \
}
#define CTL_RO_CONFIG_GEN(n, t) \
static int \
n##_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, \
void *oldp, size_t *oldlenp, void *newp, size_t newlen) { \
int ret; \
t oldval; \
\
READONLY(); \
oldval = n; \
READ(oldval, t); \
\
ret = 0; \
label_return: \
return ret; \
}
/******************************************************************************/
CTL_RO_NL_GEN(version, JEMALLOC_VERSION, const char *)
static int
epoch_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
UNUSED uint64_t newval;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
WRITE(newval, uint64_t);
if (newp != NULL) {
ctl_refresh(tsd_tsdn(tsd));
}
READ(ctl_arenas->epoch, uint64_t);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
background_thread_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp,
void *newp, size_t newlen) {
int ret;
bool oldval;
if (!have_background_thread) {
return ENOENT;
}
background_thread_ctl_init(tsd_tsdn(tsd));
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
if (newp == NULL) {
oldval = background_thread_enabled();
READ(oldval, bool);
} else {
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
oldval = background_thread_enabled();
READ(oldval, bool);
bool newval = *(bool *)newp;
if (newval == oldval) {
ret = 0;
goto label_return;
}
background_thread_enabled_set(tsd_tsdn(tsd), newval);
if (newval) {
if (background_threads_enable(tsd)) {
ret = EFAULT;
goto label_return;
}
} else {
if (background_threads_disable(tsd)) {
ret = EFAULT;
goto label_return;
}
}
}
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
max_background_threads_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
size_t oldval;
if (!have_background_thread) {
return ENOENT;
}
background_thread_ctl_init(tsd_tsdn(tsd));
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
if (newp == NULL) {
oldval = max_background_threads;
READ(oldval, size_t);
} else {
if (newlen != sizeof(size_t)) {
ret = EINVAL;
goto label_return;
}
oldval = max_background_threads;
READ(oldval, size_t);
size_t newval = *(size_t *)newp;
if (newval == oldval) {
ret = 0;
goto label_return;
}
if (newval > opt_max_background_threads) {
ret = EINVAL;
goto label_return;
}
if (background_thread_enabled()) {
background_thread_enabled_set(tsd_tsdn(tsd), false);
if (background_threads_disable(tsd)) {
ret = EFAULT;
goto label_return;
}
max_background_threads = newval;
background_thread_enabled_set(tsd_tsdn(tsd), true);
if (background_threads_enable(tsd)) {
ret = EFAULT;
goto label_return;
}
} else {
max_background_threads = newval;
}
}
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
/******************************************************************************/
CTL_RO_CONFIG_GEN(config_cache_oblivious, bool)
CTL_RO_CONFIG_GEN(config_debug, bool)
CTL_RO_CONFIG_GEN(config_fill, bool)
CTL_RO_CONFIG_GEN(config_lazy_lock, bool)
CTL_RO_CONFIG_GEN(config_malloc_conf, const char *)
CTL_RO_CONFIG_GEN(config_opt_safety_checks, bool)
CTL_RO_CONFIG_GEN(config_prof, bool)
CTL_RO_CONFIG_GEN(config_prof_libgcc, bool)
CTL_RO_CONFIG_GEN(config_prof_libunwind, bool)
CTL_RO_CONFIG_GEN(config_stats, bool)
CTL_RO_CONFIG_GEN(config_utrace, bool)
CTL_RO_CONFIG_GEN(config_xmalloc, bool)
/******************************************************************************/
CTL_RO_NL_GEN(opt_abort, opt_abort, bool)
CTL_RO_NL_GEN(opt_abort_conf, opt_abort_conf, bool)
CTL_RO_NL_GEN(opt_cache_oblivious, opt_cache_oblivious, bool)
CTL_RO_NL_GEN(opt_trust_madvise, opt_trust_madvise, bool)
CTL_RO_NL_GEN(opt_confirm_conf, opt_confirm_conf, bool)
/* HPA options. */
CTL_RO_NL_GEN(opt_hpa, opt_hpa, bool)
CTL_RO_NL_GEN(opt_hpa_hugification_threshold,
opt_hpa_opts.hugification_threshold, size_t)
CTL_RO_NL_GEN(opt_hpa_hugify_delay_ms, opt_hpa_opts.hugify_delay_ms, uint64_t)
CTL_RO_NL_GEN(opt_hpa_min_purge_interval_ms, opt_hpa_opts.min_purge_interval_ms,
uint64_t)
/*
* This will have to change before we publicly document this option; fxp_t and
* its representation are internal implementation details.
*/
CTL_RO_NL_GEN(opt_hpa_dirty_mult, opt_hpa_opts.dirty_mult, fxp_t)
CTL_RO_NL_GEN(opt_hpa_slab_max_alloc, opt_hpa_opts.slab_max_alloc, size_t)
/* HPA SEC options */
CTL_RO_NL_GEN(opt_hpa_sec_nshards, opt_hpa_sec_opts.nshards, size_t)
CTL_RO_NL_GEN(opt_hpa_sec_max_alloc, opt_hpa_sec_opts.max_alloc, size_t)
CTL_RO_NL_GEN(opt_hpa_sec_max_bytes, opt_hpa_sec_opts.max_bytes, size_t)
CTL_RO_NL_GEN(opt_hpa_sec_bytes_after_flush, opt_hpa_sec_opts.bytes_after_flush,
size_t)
CTL_RO_NL_GEN(opt_hpa_sec_batch_fill_extra, opt_hpa_sec_opts.batch_fill_extra,
size_t)
CTL_RO_NL_GEN(opt_metadata_thp, metadata_thp_mode_names[opt_metadata_thp],
const char *)
CTL_RO_NL_GEN(opt_retain, opt_retain, bool)
CTL_RO_NL_GEN(opt_dss, opt_dss, const char *)
CTL_RO_NL_GEN(opt_narenas, opt_narenas, unsigned)
CTL_RO_NL_GEN(opt_percpu_arena, percpu_arena_mode_names[opt_percpu_arena],
const char *)
CTL_RO_NL_GEN(opt_mutex_max_spin, opt_mutex_max_spin, int64_t)
CTL_RO_NL_GEN(opt_oversize_threshold, opt_oversize_threshold, size_t)
CTL_RO_NL_GEN(opt_background_thread, opt_background_thread, bool)
CTL_RO_NL_GEN(opt_max_background_threads, opt_max_background_threads, size_t)
CTL_RO_NL_GEN(opt_dirty_decay_ms, opt_dirty_decay_ms, ssize_t)
CTL_RO_NL_GEN(opt_muzzy_decay_ms, opt_muzzy_decay_ms, ssize_t)
CTL_RO_NL_GEN(opt_stats_print, opt_stats_print, bool)
CTL_RO_NL_GEN(opt_stats_print_opts, opt_stats_print_opts, const char *)
CTL_RO_NL_GEN(opt_stats_interval, opt_stats_interval, int64_t)
CTL_RO_NL_GEN(opt_stats_interval_opts, opt_stats_interval_opts, const char *)
CTL_RO_NL_CGEN(config_fill, opt_junk, opt_junk, const char *)
CTL_RO_NL_CGEN(config_fill, opt_zero, opt_zero, bool)
CTL_RO_NL_CGEN(config_utrace, opt_utrace, opt_utrace, bool)
CTL_RO_NL_CGEN(config_xmalloc, opt_xmalloc, opt_xmalloc, bool)
CTL_RO_NL_CGEN(config_enable_cxx, opt_experimental_infallible_new,
opt_experimental_infallible_new, bool)
CTL_RO_NL_GEN(opt_tcache, opt_tcache, bool)
CTL_RO_NL_GEN(opt_tcache_max, opt_tcache_max, size_t)
CTL_RO_NL_GEN(opt_tcache_nslots_small_min, opt_tcache_nslots_small_min,
unsigned)
CTL_RO_NL_GEN(opt_tcache_nslots_small_max, opt_tcache_nslots_small_max,
unsigned)
CTL_RO_NL_GEN(opt_tcache_nslots_large, opt_tcache_nslots_large, unsigned)
CTL_RO_NL_GEN(opt_lg_tcache_nslots_mul, opt_lg_tcache_nslots_mul, ssize_t)
CTL_RO_NL_GEN(opt_tcache_gc_incr_bytes, opt_tcache_gc_incr_bytes, size_t)
CTL_RO_NL_GEN(opt_tcache_gc_delay_bytes, opt_tcache_gc_delay_bytes, size_t)
CTL_RO_NL_GEN(opt_lg_tcache_flush_small_div, opt_lg_tcache_flush_small_div,
unsigned)
CTL_RO_NL_GEN(opt_lg_tcache_flush_large_div, opt_lg_tcache_flush_large_div,
unsigned)
CTL_RO_NL_GEN(opt_thp, thp_mode_names[opt_thp], const char *)
CTL_RO_NL_GEN(opt_lg_extent_max_active_fit, opt_lg_extent_max_active_fit,
size_t)
CTL_RO_NL_CGEN(config_prof, opt_prof, opt_prof, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_prefix, opt_prof_prefix, const char *)
CTL_RO_NL_CGEN(config_prof, opt_prof_active, opt_prof_active, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_thread_active_init,
opt_prof_thread_active_init, bool)
CTL_RO_NL_CGEN(config_prof, opt_lg_prof_sample, opt_lg_prof_sample, size_t)
CTL_RO_NL_CGEN(config_prof, opt_prof_accum, opt_prof_accum, bool)
CTL_RO_NL_CGEN(config_prof, opt_lg_prof_interval, opt_lg_prof_interval, ssize_t)
CTL_RO_NL_CGEN(config_prof, opt_prof_gdump, opt_prof_gdump, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_final, opt_prof_final, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_leak, opt_prof_leak, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_leak_error, opt_prof_leak_error, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_recent_alloc_max,
opt_prof_recent_alloc_max, ssize_t)
CTL_RO_NL_CGEN(config_prof, opt_prof_stats, opt_prof_stats, bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_sys_thread_name, opt_prof_sys_thread_name,
bool)
CTL_RO_NL_CGEN(config_prof, opt_prof_time_res,
prof_time_res_mode_names[opt_prof_time_res], const char *)
CTL_RO_NL_CGEN(config_uaf_detection, opt_lg_san_uaf_align,
opt_lg_san_uaf_align, ssize_t)
CTL_RO_NL_GEN(opt_zero_realloc,
zero_realloc_mode_names[opt_zero_realloc_action], const char *)
/******************************************************************************/
static int
thread_arena_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
arena_t *oldarena;
unsigned newind, oldind;
oldarena = arena_choose(tsd, NULL);
if (oldarena == NULL) {
return EAGAIN;
}
newind = oldind = arena_ind_get(oldarena);
WRITE(newind, unsigned);
READ(oldind, unsigned);
if (newind != oldind) {
arena_t *newarena;
if (newind >= narenas_total_get()) {
/* New arena index is out of range. */
ret = EFAULT;
goto label_return;
}
if (have_percpu_arena &&
PERCPU_ARENA_ENABLED(opt_percpu_arena)) {
if (newind < percpu_arena_ind_limit(opt_percpu_arena)) {
/*
* If perCPU arena is enabled, thread_arena
* control is not allowed for the auto arena
* range.
*/
ret = EPERM;
goto label_return;
}
}
/* Initialize arena if necessary. */
newarena = arena_get(tsd_tsdn(tsd), newind, true);
if (newarena == NULL) {
ret = EAGAIN;
goto label_return;
}
/* Set new arena/tcache associations. */
arena_migrate(tsd, oldarena, newarena);
if (tcache_available(tsd)) {
tcache_arena_reassociate(tsd_tsdn(tsd),
tsd_tcache_slowp_get(tsd), tsd_tcachep_get(tsd),
newarena);
}
}
ret = 0;
label_return:
return ret;
}
CTL_RO_NL_GEN(thread_allocated, tsd_thread_allocated_get(tsd), uint64_t)
CTL_RO_NL_GEN(thread_allocatedp, tsd_thread_allocatedp_get(tsd), uint64_t *)
CTL_RO_NL_GEN(thread_deallocated, tsd_thread_deallocated_get(tsd), uint64_t)
CTL_RO_NL_GEN(thread_deallocatedp, tsd_thread_deallocatedp_get(tsd), uint64_t *)
static int
thread_tcache_enabled_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
bool oldval;
oldval = tcache_enabled_get(tsd);
if (newp != NULL) {
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
tcache_enabled_set(tsd, *(bool *)newp);
}
READ(oldval, bool);
ret = 0;
label_return:
return ret;
}
static int
thread_tcache_flush_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
if (!tcache_available(tsd)) {
ret = EFAULT;
goto label_return;
}
NEITHER_READ_NOR_WRITE();
tcache_flush(tsd);
ret = 0;
label_return:
return ret;
}
static int
thread_peak_read_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
if (!config_stats) {
return ENOENT;
}
READONLY();
peak_event_update(tsd);
uint64_t result = peak_event_max(tsd);
READ(result, uint64_t);
ret = 0;
label_return:
return ret;
}
static int
thread_peak_reset_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
if (!config_stats) {
return ENOENT;
}
NEITHER_READ_NOR_WRITE();
peak_event_zero(tsd);
ret = 0;
label_return:
return ret;
}
static int
thread_prof_name_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
if (!config_prof || !opt_prof) {
return ENOENT;
}
READ_XOR_WRITE();
if (newp != NULL) {
if (newlen != sizeof(const char *)) {
ret = EINVAL;
goto label_return;
}
if ((ret = prof_thread_name_set(tsd, *(const char **)newp)) !=
0) {
goto label_return;
}
} else {
const char *oldname = prof_thread_name_get(tsd);
READ(oldname, const char *);
}
ret = 0;
label_return:
return ret;
}
static int
thread_prof_active_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
bool oldval;
if (!config_prof) {
return ENOENT;
}
oldval = opt_prof ? prof_thread_active_get(tsd) : false;
if (newp != NULL) {
if (!opt_prof) {
ret = ENOENT;
goto label_return;
}
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
if (prof_thread_active_set(tsd, *(bool *)newp)) {
ret = EAGAIN;
goto label_return;
}
}
READ(oldval, bool);
ret = 0;
label_return:
return ret;
}
static int
thread_idle_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
NEITHER_READ_NOR_WRITE();
if (tcache_available(tsd)) {
tcache_flush(tsd);
}
/*
* This heuristic is perhaps not the most well-considered. But it
* matches the only idling policy we have experience with in the status
* quo. Over time we should investigate more principled approaches.
*/
if (opt_narenas > ncpus * 2) {
arena_t *arena = arena_choose(tsd, NULL);
if (arena != NULL) {
arena_decay(tsd_tsdn(tsd), arena, false, true);
}
/*
* The missing arena case is not actually an error; a thread
* might be idle before it associates itself to one. This is
* unusual, but not wrong.
*/
}
ret = 0;
label_return:
return ret;
}
/******************************************************************************/
static int
tcache_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned tcache_ind;
READONLY();
VERIFY_READ(unsigned);
if (tcaches_create(tsd, b0get(), &tcache_ind)) {
ret = EFAULT;
goto label_return;
}
READ(tcache_ind, unsigned);
ret = 0;
label_return:
return ret;
}
static int
tcache_flush_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned tcache_ind;
WRITEONLY();
ASSURED_WRITE(tcache_ind, unsigned);
tcaches_flush(tsd, tcache_ind);
ret = 0;
label_return:
return ret;
}
static int
tcache_destroy_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned tcache_ind;
WRITEONLY();
ASSURED_WRITE(tcache_ind, unsigned);
tcaches_destroy(tsd, tcache_ind);
ret = 0;
label_return:
return ret;
}
/******************************************************************************/
static int
arena_i_initialized_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
tsdn_t *tsdn = tsd_tsdn(tsd);
unsigned arena_ind;
bool initialized;
READONLY();
MIB_UNSIGNED(arena_ind, 1);
malloc_mutex_lock(tsdn, &ctl_mtx);
initialized = arenas_i(arena_ind)->initialized;
malloc_mutex_unlock(tsdn, &ctl_mtx);
READ(initialized, bool);
ret = 0;
label_return:
return ret;
}
static void
arena_i_decay(tsdn_t *tsdn, unsigned arena_ind, bool all) {
malloc_mutex_lock(tsdn, &ctl_mtx);
{
unsigned narenas = ctl_arenas->narenas;
/*
* Access via index narenas is deprecated, and scheduled for
* removal in 6.0.0.
*/
if (arena_ind == MALLCTL_ARENAS_ALL || arena_ind == narenas) {
unsigned i;
VARIABLE_ARRAY(arena_t *, tarenas, narenas);
for (i = 0; i < narenas; i++) {
tarenas[i] = arena_get(tsdn, i, false);
}
/*
* No further need to hold ctl_mtx, since narenas and
* tarenas contain everything needed below.
*/
malloc_mutex_unlock(tsdn, &ctl_mtx);
for (i = 0; i < narenas; i++) {
if (tarenas[i] != NULL) {
arena_decay(tsdn, tarenas[i], false,
all);
}
}
} else {
arena_t *tarena;
assert(arena_ind < narenas);
tarena = arena_get(tsdn, arena_ind, false);
/* No further need to hold ctl_mtx. */
malloc_mutex_unlock(tsdn, &ctl_mtx);
if (tarena != NULL) {
arena_decay(tsdn, tarena, false, all);
}
}
}
}
static int
arena_i_decay_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
NEITHER_READ_NOR_WRITE();
MIB_UNSIGNED(arena_ind, 1);
arena_i_decay(tsd_tsdn(tsd), arena_ind, false);
ret = 0;
label_return:
return ret;
}
static int
arena_i_purge_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
NEITHER_READ_NOR_WRITE();
MIB_UNSIGNED(arena_ind, 1);
arena_i_decay(tsd_tsdn(tsd), arena_ind, true);
ret = 0;
label_return:
return ret;
}
static int
arena_i_reset_destroy_helper(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen, unsigned *arena_ind,
arena_t **arena) {
int ret;
NEITHER_READ_NOR_WRITE();
MIB_UNSIGNED(*arena_ind, 1);
*arena = arena_get(tsd_tsdn(tsd), *arena_ind, false);
if (*arena == NULL || arena_is_auto(*arena)) {
ret = EFAULT;
goto label_return;
}
ret = 0;
label_return:
return ret;
}
static void
arena_reset_prepare_background_thread(tsd_t *tsd, unsigned arena_ind) {
/* Temporarily disable the background thread during arena reset. */
if (have_background_thread) {
malloc_mutex_lock(tsd_tsdn(tsd), &background_thread_lock);
if (background_thread_enabled()) {
background_thread_info_t *info =
background_thread_info_get(arena_ind);
assert(info->state == background_thread_started);
malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
info->state = background_thread_paused;
malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
}
}
}
static void
arena_reset_finish_background_thread(tsd_t *tsd, unsigned arena_ind) {
if (have_background_thread) {
if (background_thread_enabled()) {
background_thread_info_t *info =
background_thread_info_get(arena_ind);
assert(info->state == background_thread_paused);
malloc_mutex_lock(tsd_tsdn(tsd), &info->mtx);
info->state = background_thread_started;
malloc_mutex_unlock(tsd_tsdn(tsd), &info->mtx);
}
malloc_mutex_unlock(tsd_tsdn(tsd), &background_thread_lock);
}
}
static int
arena_i_reset_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
arena_t *arena;
ret = arena_i_reset_destroy_helper(tsd, mib, miblen, oldp, oldlenp,
newp, newlen, &arena_ind, &arena);
if (ret != 0) {
return ret;
}
arena_reset_prepare_background_thread(tsd, arena_ind);
arena_reset(tsd, arena);
arena_reset_finish_background_thread(tsd, arena_ind);
return ret;
}
static int
arena_i_destroy_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
arena_t *arena;
ctl_arena_t *ctl_darena, *ctl_arena;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
ret = arena_i_reset_destroy_helper(tsd, mib, miblen, oldp, oldlenp,
newp, newlen, &arena_ind, &arena);
if (ret != 0) {
goto label_return;
}
if (arena_nthreads_get(arena, false) != 0 || arena_nthreads_get(arena,
true) != 0) {
ret = EFAULT;
goto label_return;
}
arena_reset_prepare_background_thread(tsd, arena_ind);
/* Merge stats after resetting and purging arena. */
arena_reset(tsd, arena);
arena_decay(tsd_tsdn(tsd), arena, false, true);
ctl_darena = arenas_i(MALLCTL_ARENAS_DESTROYED);
ctl_darena->initialized = true;
ctl_arena_refresh(tsd_tsdn(tsd), arena, ctl_darena, arena_ind, true);
/* Destroy arena. */
arena_destroy(tsd, arena);
ctl_arena = arenas_i(arena_ind);
ctl_arena->initialized = false;
/* Record arena index for later recycling via arenas.create. */
ql_elm_new(ctl_arena, destroyed_link);
ql_tail_insert(&ctl_arenas->destroyed, ctl_arena, destroyed_link);
arena_reset_finish_background_thread(tsd, arena_ind);
assert(ret == 0);
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
arena_i_dss_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const char *dss = NULL;
unsigned arena_ind;
dss_prec_t dss_prec_old = dss_prec_limit;
dss_prec_t dss_prec = dss_prec_limit;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
WRITE(dss, const char *);
MIB_UNSIGNED(arena_ind, 1);
if (dss != NULL) {
int i;
bool match = false;
for (i = 0; i < dss_prec_limit; i++) {
if (strcmp(dss_prec_names[i], dss) == 0) {
dss_prec = i;
match = true;
break;
}
}
if (!match) {
ret = EINVAL;
goto label_return;
}
}
/*
* Access via index narenas is deprecated, and scheduled for removal in
* 6.0.0.
*/
if (arena_ind == MALLCTL_ARENAS_ALL || arena_ind ==
ctl_arenas->narenas) {
if (dss_prec != dss_prec_limit &&
extent_dss_prec_set(dss_prec)) {
ret = EFAULT;
goto label_return;
}
dss_prec_old = extent_dss_prec_get();
} else {
arena_t *arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
if (arena == NULL || (dss_prec != dss_prec_limit &&
arena_dss_prec_set(arena, dss_prec))) {
ret = EFAULT;
goto label_return;
}
dss_prec_old = arena_dss_prec_get(arena);
}
dss = dss_prec_names[dss_prec_old];
READ(dss, const char *);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
arena_i_oversize_threshold_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
MIB_UNSIGNED(arena_ind, 1);
arena_t *arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
if (arena == NULL) {
ret = EFAULT;
goto label_return;
}
if (oldp != NULL && oldlenp != NULL) {
size_t oldval = atomic_load_zu(
&arena->pa_shard.pac.oversize_threshold, ATOMIC_RELAXED);
READ(oldval, size_t);
}
if (newp != NULL) {
if (newlen != sizeof(size_t)) {
ret = EINVAL;
goto label_return;
}
atomic_store_zu(&arena->pa_shard.pac.oversize_threshold,
*(size_t *)newp, ATOMIC_RELAXED);
}
ret = 0;
label_return:
return ret;
}
static int
arena_i_decay_ms_ctl_impl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen, bool dirty) {
int ret;
unsigned arena_ind;
arena_t *arena;
MIB_UNSIGNED(arena_ind, 1);
arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
if (arena == NULL) {
ret = EFAULT;
goto label_return;
}
extent_state_t state = dirty ? extent_state_dirty : extent_state_muzzy;
if (oldp != NULL && oldlenp != NULL) {
size_t oldval = arena_decay_ms_get(arena, state);
READ(oldval, ssize_t);
}
if (newp != NULL) {
if (newlen != sizeof(ssize_t)) {
ret = EINVAL;
goto label_return;
}
if (arena_is_huge(arena_ind) && *(ssize_t *)newp > 0) {
/*
* By default the huge arena purges eagerly. If it is
* set to non-zero decay time afterwards, background
* thread might be needed.
*/
if (background_thread_create(tsd, arena_ind)) {
ret = EFAULT;
goto label_return;
}
}
if (arena_decay_ms_set(tsd_tsdn(tsd), arena, state,
*(ssize_t *)newp)) {
ret = EFAULT;
goto label_return;
}
}
ret = 0;
label_return:
return ret;
}
static int
arena_i_dirty_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
return arena_i_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
newlen, true);
}
static int
arena_i_muzzy_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
return arena_i_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
newlen, false);
}
static int
arena_i_extent_hooks_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
arena_t *arena;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
MIB_UNSIGNED(arena_ind, 1);
if (arena_ind < narenas_total_get()) {
extent_hooks_t *old_extent_hooks;
arena = arena_get(tsd_tsdn(tsd), arena_ind, false);
if (arena == NULL) {
if (arena_ind >= narenas_auto) {
ret = EFAULT;
goto label_return;
}
old_extent_hooks =
(extent_hooks_t *)&ehooks_default_extent_hooks;
READ(old_extent_hooks, extent_hooks_t *);
if (newp != NULL) {
/* Initialize a new arena as a side effect. */
extent_hooks_t *new_extent_hooks
JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_extent_hooks, extent_hooks_t *);
arena_config_t config = arena_config_default;
config.extent_hooks = new_extent_hooks;
arena = arena_init(tsd_tsdn(tsd), arena_ind,
&config);
if (arena == NULL) {
ret = EFAULT;
goto label_return;
}
}
} else {
if (newp != NULL) {
extent_hooks_t *new_extent_hooks
JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_extent_hooks, extent_hooks_t *);
old_extent_hooks = arena_set_extent_hooks(tsd,
arena, new_extent_hooks);
READ(old_extent_hooks, extent_hooks_t *);
} else {
old_extent_hooks =
ehooks_get_extent_hooks_ptr(
arena_get_ehooks(arena));
READ(old_extent_hooks, extent_hooks_t *);
}
}
} else {
ret = EFAULT;
goto label_return;
}
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
arena_i_retain_grow_limit_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
unsigned arena_ind;
arena_t *arena;
if (!opt_retain) {
/* Only relevant when retain is enabled. */
return ENOENT;
}
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
MIB_UNSIGNED(arena_ind, 1);
if (arena_ind < narenas_total_get() && (arena =
arena_get(tsd_tsdn(tsd), arena_ind, false)) != NULL) {
size_t old_limit, new_limit;
if (newp != NULL) {
WRITE(new_limit, size_t);
}
bool err = arena_retain_grow_limit_get_set(tsd, arena,
&old_limit, newp != NULL ? &new_limit : NULL);
if (!err) {
READ(old_limit, size_t);
ret = 0;
} else {
ret = EFAULT;
}
} else {
ret = EFAULT;
}
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static const ctl_named_node_t *
arena_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
size_t i) {
const ctl_named_node_t *ret;
malloc_mutex_lock(tsdn, &ctl_mtx);
switch (i) {
case MALLCTL_ARENAS_ALL:
case MALLCTL_ARENAS_DESTROYED:
break;
default:
if (i > ctl_arenas->narenas) {
ret = NULL;
goto label_return;
}
break;
}
ret = super_arena_i_node;
label_return:
malloc_mutex_unlock(tsdn, &ctl_mtx);
return ret;
}
/******************************************************************************/
static int
arenas_narenas_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned narenas;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
READONLY();
narenas = ctl_arenas->narenas;
READ(narenas, unsigned);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
arenas_decay_ms_ctl_impl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen, bool dirty) {
int ret;
if (oldp != NULL && oldlenp != NULL) {
size_t oldval = (dirty ? arena_dirty_decay_ms_default_get() :
arena_muzzy_decay_ms_default_get());
READ(oldval, ssize_t);
}
if (newp != NULL) {
if (newlen != sizeof(ssize_t)) {
ret = EINVAL;
goto label_return;
}
if (dirty ? arena_dirty_decay_ms_default_set(*(ssize_t *)newp)
: arena_muzzy_decay_ms_default_set(*(ssize_t *)newp)) {
ret = EFAULT;
goto label_return;
}
}
ret = 0;
label_return:
return ret;
}
static int
arenas_dirty_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
return arenas_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
newlen, true);
}
static int
arenas_muzzy_decay_ms_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
return arenas_decay_ms_ctl_impl(tsd, mib, miblen, oldp, oldlenp, newp,
newlen, false);
}
CTL_RO_NL_GEN(arenas_quantum, QUANTUM, size_t)
CTL_RO_NL_GEN(arenas_page, PAGE, size_t)
CTL_RO_NL_GEN(arenas_tcache_max, tcache_maxclass, size_t)
CTL_RO_NL_GEN(arenas_nbins, SC_NBINS, unsigned)
CTL_RO_NL_GEN(arenas_nhbins, nhbins, unsigned)
CTL_RO_NL_GEN(arenas_bin_i_size, bin_infos[mib[2]].reg_size, size_t)
CTL_RO_NL_GEN(arenas_bin_i_nregs, bin_infos[mib[2]].nregs, uint32_t)
CTL_RO_NL_GEN(arenas_bin_i_slab_size, bin_infos[mib[2]].slab_size, size_t)
CTL_RO_NL_GEN(arenas_bin_i_nshards, bin_infos[mib[2]].n_shards, uint32_t)
static const ctl_named_node_t *
arenas_bin_i_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t i) {
if (i > SC_NBINS) {
return NULL;
}
return super_arenas_bin_i_node;
}
CTL_RO_NL_GEN(arenas_nlextents, SC_NSIZES - SC_NBINS, unsigned)
CTL_RO_NL_GEN(arenas_lextent_i_size, sz_index2size(SC_NBINS+(szind_t)mib[2]),
size_t)
static const ctl_named_node_t *
arenas_lextent_i_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t i) {
if (i > SC_NSIZES - SC_NBINS) {
return NULL;
}
return super_arenas_lextent_i_node;
}
static int
arenas_create_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
VERIFY_READ(unsigned);
arena_config_t config = arena_config_default;
WRITE(config.extent_hooks, extent_hooks_t *);
if ((arena_ind = ctl_arena_init(tsd, &config)) == UINT_MAX) {
ret = EAGAIN;
goto label_return;
}
READ(arena_ind, unsigned);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
experimental_arenas_create_ext_ctl(tsd_t *tsd,
const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned arena_ind;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
arena_config_t config = arena_config_default;
VERIFY_READ(unsigned);
WRITE(config, arena_config_t);
if ((arena_ind = ctl_arena_init(tsd, &config)) == UINT_MAX) {
ret = EAGAIN;
goto label_return;
}
READ(arena_ind, unsigned);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
arenas_lookup_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
unsigned arena_ind;
void *ptr;
edata_t *edata;
arena_t *arena;
ptr = NULL;
ret = EINVAL;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
WRITE(ptr, void *);
edata = emap_edata_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr);
if (edata == NULL) {
goto label_return;
}
arena = arena_get_from_edata(edata);
if (arena == NULL) {
goto label_return;
}
arena_ind = arena_ind_get(arena);
READ(arena_ind, unsigned);
ret = 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
/******************************************************************************/
static int
prof_thread_active_init_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp,
size_t newlen) {
int ret;
bool oldval;
if (!config_prof) {
return ENOENT;
}
if (newp != NULL) {
if (!opt_prof) {
ret = ENOENT;
goto label_return;
}
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
oldval = prof_thread_active_init_set(tsd_tsdn(tsd),
*(bool *)newp);
} else {
oldval = opt_prof ? prof_thread_active_init_get(tsd_tsdn(tsd)) :
false;
}
READ(oldval, bool);
ret = 0;
label_return:
return ret;
}
static int
prof_active_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
bool oldval;
if (!config_prof) {
ret = ENOENT;
goto label_return;
}
if (newp != NULL) {
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
bool val = *(bool *)newp;
if (!opt_prof) {
if (val) {
ret = ENOENT;
goto label_return;
} else {
/* No change needed (already off). */
oldval = false;
}
} else {
oldval = prof_active_set(tsd_tsdn(tsd), val);
}
} else {
oldval = opt_prof ? prof_active_get(tsd_tsdn(tsd)) : false;
}
READ(oldval, bool);
ret = 0;
label_return:
return ret;
}
static int
prof_dump_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const char *filename = NULL;
if (!config_prof || !opt_prof) {
return ENOENT;
}
WRITEONLY();
WRITE(filename, const char *);
if (prof_mdump(tsd, filename)) {
ret = EFAULT;
goto label_return;
}
ret = 0;
label_return:
return ret;
}
static int
prof_gdump_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
bool oldval;
if (!config_prof) {
return ENOENT;
}
if (newp != NULL) {
if (!opt_prof) {
ret = ENOENT;
goto label_return;
}
if (newlen != sizeof(bool)) {
ret = EINVAL;
goto label_return;
}
oldval = prof_gdump_set(tsd_tsdn(tsd), *(bool *)newp);
} else {
oldval = opt_prof ? prof_gdump_get(tsd_tsdn(tsd)) : false;
}
READ(oldval, bool);
ret = 0;
label_return:
return ret;
}
static int
prof_prefix_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const char *prefix = NULL;
if (!config_prof || !opt_prof) {
return ENOENT;
}
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
WRITEONLY();
WRITE(prefix, const char *);
ret = prof_prefix_set(tsd_tsdn(tsd), prefix) ? EFAULT : 0;
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
prof_reset_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
size_t lg_sample = lg_prof_sample;
if (!config_prof || !opt_prof) {
return ENOENT;
}
WRITEONLY();
WRITE(lg_sample, size_t);
if (lg_sample >= (sizeof(uint64_t) << 3)) {
lg_sample = (sizeof(uint64_t) << 3) - 1;
}
prof_reset(tsd, lg_sample);
ret = 0;
label_return:
return ret;
}
CTL_RO_NL_CGEN(config_prof, prof_interval, prof_interval, uint64_t)
CTL_RO_NL_CGEN(config_prof, lg_prof_sample, lg_prof_sample, size_t)
static int
prof_log_start_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
int ret;
const char *filename = NULL;
if (!config_prof || !opt_prof) {
return ENOENT;
}
WRITEONLY();
WRITE(filename, const char *);
if (prof_log_start(tsd_tsdn(tsd), filename)) {
ret = EFAULT;
goto label_return;
}
ret = 0;
label_return:
return ret;
}
static int
prof_log_stop_ctl(tsd_t *tsd, const size_t *mib, size_t miblen, void *oldp,
size_t *oldlenp, void *newp, size_t newlen) {
if (!config_prof || !opt_prof) {
return ENOENT;
}
if (prof_log_stop(tsd_tsdn(tsd))) {
return EFAULT;
}
return 0;
}
static int
experimental_hooks_prof_backtrace_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (oldp == NULL && newp == NULL) {
ret = EINVAL;
goto label_return;
}
if (oldp != NULL) {
prof_backtrace_hook_t old_hook =
prof_backtrace_hook_get();
READ(old_hook, prof_backtrace_hook_t);
}
if (newp != NULL) {
if (!opt_prof) {
ret = ENOENT;
goto label_return;
}
prof_backtrace_hook_t new_hook JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_hook, prof_backtrace_hook_t);
if (new_hook == NULL) {
ret = EINVAL;
goto label_return;
}
prof_backtrace_hook_set(new_hook);
}
ret = 0;
label_return:
return ret;
}
static int
experimental_hooks_prof_dump_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (oldp == NULL && newp == NULL) {
ret = EINVAL;
goto label_return;
}
if (oldp != NULL) {
prof_dump_hook_t old_hook =
prof_dump_hook_get();
READ(old_hook, prof_dump_hook_t);
}
if (newp != NULL) {
if (!opt_prof) {
ret = ENOENT;
goto label_return;
}
prof_dump_hook_t new_hook JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(new_hook, prof_dump_hook_t);
prof_dump_hook_set(new_hook);
}
ret = 0;
label_return:
return ret;
}
/* For integration test purpose only. No plan to move out of experimental. */
static int
experimental_hooks_safety_check_abort_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
WRITEONLY();
if (newp != NULL) {
if (newlen != sizeof(safety_check_abort_hook_t)) {
ret = EINVAL;
goto label_return;
}
safety_check_abort_hook_t hook JEMALLOC_CC_SILENCE_INIT(NULL);
WRITE(hook, safety_check_abort_hook_t);
safety_check_set_abort(hook);
}
ret = 0;
label_return:
return ret;
}
/******************************************************************************/
CTL_RO_CGEN(config_stats, stats_allocated, ctl_stats->allocated, size_t)
CTL_RO_CGEN(config_stats, stats_active, ctl_stats->active, size_t)
CTL_RO_CGEN(config_stats, stats_metadata, ctl_stats->metadata, size_t)
CTL_RO_CGEN(config_stats, stats_metadata_thp, ctl_stats->metadata_thp, size_t)
CTL_RO_CGEN(config_stats, stats_resident, ctl_stats->resident, size_t)
CTL_RO_CGEN(config_stats, stats_mapped, ctl_stats->mapped, size_t)
CTL_RO_CGEN(config_stats, stats_retained, ctl_stats->retained, size_t)
CTL_RO_CGEN(config_stats, stats_background_thread_num_threads,
ctl_stats->background_thread.num_threads, size_t)
CTL_RO_CGEN(config_stats, stats_background_thread_num_runs,
ctl_stats->background_thread.num_runs, uint64_t)
CTL_RO_CGEN(config_stats, stats_background_thread_run_interval,
nstime_ns(&ctl_stats->background_thread.run_interval), uint64_t)
CTL_RO_CGEN(config_stats, stats_zero_reallocs,
atomic_load_zu(&zero_realloc_count, ATOMIC_RELAXED), size_t)
CTL_RO_GEN(stats_arenas_i_dss, arenas_i(mib[2])->dss, const char *)
CTL_RO_GEN(stats_arenas_i_dirty_decay_ms, arenas_i(mib[2])->dirty_decay_ms,
ssize_t)
CTL_RO_GEN(stats_arenas_i_muzzy_decay_ms, arenas_i(mib[2])->muzzy_decay_ms,
ssize_t)
CTL_RO_GEN(stats_arenas_i_nthreads, arenas_i(mib[2])->nthreads, unsigned)
CTL_RO_GEN(stats_arenas_i_uptime,
nstime_ns(&arenas_i(mib[2])->astats->astats.uptime), uint64_t)
CTL_RO_GEN(stats_arenas_i_pactive, arenas_i(mib[2])->pactive, size_t)
CTL_RO_GEN(stats_arenas_i_pdirty, arenas_i(mib[2])->pdirty, size_t)
CTL_RO_GEN(stats_arenas_i_pmuzzy, arenas_i(mib[2])->pmuzzy, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_mapped,
arenas_i(mib[2])->astats->astats.mapped, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_retained,
arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.retained, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_extent_avail,
arenas_i(mib[2])->astats->astats.pa_shard_stats.edata_avail, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_npurge,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.npurge),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_nmadvise,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.nmadvise),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_dirty_purged,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_dirty.purged),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_npurge,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.npurge),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_nmadvise,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.nmadvise),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_muzzy_purged,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.decay_muzzy.purged),
uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_base,
arenas_i(mib[2])->astats->astats.base,
size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_internal,
atomic_load_zu(&arenas_i(mib[2])->astats->astats.internal, ATOMIC_RELAXED),
size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_metadata_thp,
arenas_i(mib[2])->astats->astats.metadata_thp, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_tcache_bytes,
arenas_i(mib[2])->astats->astats.tcache_bytes, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_tcache_stashed_bytes,
arenas_i(mib[2])->astats->astats.tcache_stashed_bytes, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_resident,
arenas_i(mib[2])->astats->astats.resident,
size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_abandoned_vm,
atomic_load_zu(
&arenas_i(mib[2])->astats->astats.pa_shard_stats.pac_stats.abandoned_vm,
ATOMIC_RELAXED), size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_sec_bytes,
arenas_i(mib[2])->astats->secstats.bytes, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_allocated,
arenas_i(mib[2])->astats->allocated_small, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_nmalloc,
arenas_i(mib[2])->astats->nmalloc_small, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_ndalloc,
arenas_i(mib[2])->astats->ndalloc_small, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_nrequests,
arenas_i(mib[2])->astats->nrequests_small, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_nfills,
arenas_i(mib[2])->astats->nfills_small, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_small_nflushes,
arenas_i(mib[2])->astats->nflushes_small, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_large_allocated,
arenas_i(mib[2])->astats->astats.allocated_large, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_large_nmalloc,
arenas_i(mib[2])->astats->astats.nmalloc_large, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_large_ndalloc,
arenas_i(mib[2])->astats->astats.ndalloc_large, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_large_nrequests,
arenas_i(mib[2])->astats->astats.nrequests_large, uint64_t)
/*
* Note: "nmalloc_large" here instead of "nfills" in the read. This is
* intentional (large has no batch fill).
*/
CTL_RO_CGEN(config_stats, stats_arenas_i_large_nfills,
arenas_i(mib[2])->astats->astats.nmalloc_large, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_large_nflushes,
arenas_i(mib[2])->astats->astats.nflushes_large, uint64_t)
/* Lock profiling related APIs below. */
#define RO_MUTEX_CTL_GEN(n, l) \
CTL_RO_CGEN(config_stats, stats_##n##_num_ops, \
l.n_lock_ops, uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_num_wait, \
l.n_wait_times, uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_num_spin_acq, \
l.n_spin_acquired, uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_num_owner_switch, \
l.n_owner_switches, uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_total_wait_time, \
nstime_ns(&l.tot_wait_time), uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_max_wait_time, \
nstime_ns(&l.max_wait_time), uint64_t) \
CTL_RO_CGEN(config_stats, stats_##n##_max_num_thds, \
l.max_n_thds, uint32_t)
/* Global mutexes. */
#define OP(mtx) \
RO_MUTEX_CTL_GEN(mutexes_##mtx, \
ctl_stats->mutex_prof_data[global_prof_mutex_##mtx])
MUTEX_PROF_GLOBAL_MUTEXES
#undef OP
/* Per arena mutexes */
#define OP(mtx) RO_MUTEX_CTL_GEN(arenas_i_mutexes_##mtx, \
arenas_i(mib[2])->astats->astats.mutex_prof_data[arena_prof_mutex_##mtx])
MUTEX_PROF_ARENA_MUTEXES
#undef OP
/* tcache bin mutex */
RO_MUTEX_CTL_GEN(arenas_i_bins_j_mutex,
arenas_i(mib[2])->astats->bstats[mib[4]].mutex_data)
#undef RO_MUTEX_CTL_GEN
/* Resets all mutex stats, including global, arena and bin mutexes. */
static int
stats_mutexes_reset_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp,
void *newp, size_t newlen) {
if (!config_stats) {
return ENOENT;
}
tsdn_t *tsdn = tsd_tsdn(tsd);
#define MUTEX_PROF_RESET(mtx) \
malloc_mutex_lock(tsdn, &mtx); \
malloc_mutex_prof_data_reset(tsdn, &mtx); \
malloc_mutex_unlock(tsdn, &mtx);
/* Global mutexes: ctl and prof. */
MUTEX_PROF_RESET(ctl_mtx);
if (have_background_thread) {
MUTEX_PROF_RESET(background_thread_lock);
}
if (config_prof && opt_prof) {
MUTEX_PROF_RESET(bt2gctx_mtx);
MUTEX_PROF_RESET(tdatas_mtx);
MUTEX_PROF_RESET(prof_dump_mtx);
MUTEX_PROF_RESET(prof_recent_alloc_mtx);
MUTEX_PROF_RESET(prof_recent_dump_mtx);
MUTEX_PROF_RESET(prof_stats_mtx);
}
/* Per arena mutexes. */
unsigned n = narenas_total_get();
for (unsigned i = 0; i < n; i++) {
arena_t *arena = arena_get(tsdn, i, false);
if (!arena) {
continue;
}
MUTEX_PROF_RESET(arena->large_mtx);
MUTEX_PROF_RESET(arena->pa_shard.edata_cache.mtx);
MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_dirty.mtx);
MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_muzzy.mtx);
MUTEX_PROF_RESET(arena->pa_shard.pac.ecache_retained.mtx);
MUTEX_PROF_RESET(arena->pa_shard.pac.decay_dirty.mtx);
MUTEX_PROF_RESET(arena->pa_shard.pac.decay_muzzy.mtx);
MUTEX_PROF_RESET(arena->tcache_ql_mtx);
MUTEX_PROF_RESET(arena->base->mtx);
for (szind_t j = 0; j < SC_NBINS; j++) {
for (unsigned k = 0; k < bin_infos[j].n_shards; k++) {
bin_t *bin = arena_get_bin(arena, j, k);
MUTEX_PROF_RESET(bin->lock);
}
}
}
#undef MUTEX_PROF_RESET
return 0;
}
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nmalloc,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nmalloc, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_ndalloc,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.ndalloc, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nrequests,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nrequests, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_curregs,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.curregs, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nfills,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nfills, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nflushes,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nflushes, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nslabs,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nslabs, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nreslabs,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.reslabs, uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_curslabs,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.curslabs, size_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_bins_j_nonfull_slabs,
arenas_i(mib[2])->astats->bstats[mib[4]].stats_data.nonfull_slabs, size_t)
static const ctl_named_node_t *
stats_arenas_i_bins_j_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t j) {
if (j > SC_NBINS) {
return NULL;
}
return super_stats_arenas_i_bins_j_node;
}
CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_nmalloc,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->lstats[mib[4]].nmalloc), uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_ndalloc,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->lstats[mib[4]].ndalloc), uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_nrequests,
locked_read_u64_unsynchronized(
&arenas_i(mib[2])->astats->lstats[mib[4]].nrequests), uint64_t)
CTL_RO_CGEN(config_stats, stats_arenas_i_lextents_j_curlextents,
arenas_i(mib[2])->astats->lstats[mib[4]].curlextents, size_t)
static const ctl_named_node_t *
stats_arenas_i_lextents_j_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t j) {
if (j > SC_NSIZES - SC_NBINS) {
return NULL;
}
return super_stats_arenas_i_lextents_j_node;
}
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_ndirty,
arenas_i(mib[2])->astats->estats[mib[4]].ndirty, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_nmuzzy,
arenas_i(mib[2])->astats->estats[mib[4]].nmuzzy, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_nretained,
arenas_i(mib[2])->astats->estats[mib[4]].nretained, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_dirty_bytes,
arenas_i(mib[2])->astats->estats[mib[4]].dirty_bytes, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_muzzy_bytes,
arenas_i(mib[2])->astats->estats[mib[4]].muzzy_bytes, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_extents_j_retained_bytes,
arenas_i(mib[2])->astats->estats[mib[4]].retained_bytes, size_t);
static const ctl_named_node_t *
stats_arenas_i_extents_j_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t j) {
if (j >= SC_NPSIZES) {
return NULL;
}
return super_stats_arenas_i_extents_j_node;
}
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_npurge_passes,
arenas_i(mib[2])->astats->hpastats.nonderived_stats.npurge_passes, uint64_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_npurges,
arenas_i(mib[2])->astats->hpastats.nonderived_stats.npurges, uint64_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nhugifies,
arenas_i(mib[2])->astats->hpastats.nonderived_stats.nhugifies, uint64_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_ndehugifies,
arenas_i(mib[2])->astats->hpastats.nonderived_stats.ndehugifies, uint64_t);
/* Full, nonhuge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_npageslabs_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_nactive_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].nactive, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_ndirty_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[0].ndirty, size_t);
/* Full, huge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_npageslabs_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_nactive_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].nactive, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_full_slabs_ndirty_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.full_slabs[1].ndirty, size_t);
/* Empty, nonhuge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_npageslabs_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_nactive_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].nactive, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_ndirty_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[0].ndirty, size_t);
/* Empty, huge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_npageslabs_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_nactive_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].nactive, size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_empty_slabs_ndirty_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.empty_slabs[1].ndirty, size_t);
/* Nonfull, nonhuge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].nactive,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_nonhuge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][0].ndirty,
size_t);
/* Nonfull, huge */
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_npageslabs_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].npageslabs,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_nactive_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].nactive,
size_t);
CTL_RO_CGEN(config_stats, stats_arenas_i_hpa_shard_nonfull_slabs_j_ndirty_huge,
arenas_i(mib[2])->astats->hpastats.psset_stats.nonfull_slabs[mib[5]][1].ndirty,
size_t);
static const ctl_named_node_t *
stats_arenas_i_hpa_shard_nonfull_slabs_j_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t j) {
if (j >= PSSET_NPSIZES) {
return NULL;
}
return super_stats_arenas_i_hpa_shard_nonfull_slabs_j_node;
}
static bool
ctl_arenas_i_verify(size_t i) {
size_t a = arenas_i2a_impl(i, true, true);
if (a == UINT_MAX || !ctl_arenas->arenas[a]->initialized) {
return true;
}
return false;
}
static const ctl_named_node_t *
stats_arenas_i_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t i) {
const ctl_named_node_t *ret;
malloc_mutex_lock(tsdn, &ctl_mtx);
if (ctl_arenas_i_verify(i)) {
ret = NULL;
goto label_return;
}
ret = super_stats_arenas_i_node;
label_return:
malloc_mutex_unlock(tsdn, &ctl_mtx);
return ret;
}
static int
experimental_hooks_install_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (oldp == NULL || oldlenp == NULL|| newp == NULL) {
ret = EINVAL;
goto label_return;
}
/*
* Note: this is a *private* struct. This is an experimental interface;
* forcing the user to know the jemalloc internals well enough to
* extract the ABI hopefully ensures nobody gets too comfortable with
* this API, which can change at a moment's notice.
*/
hooks_t hooks;
WRITE(hooks, hooks_t);
void *handle = hook_install(tsd_tsdn(tsd), &hooks);
if (handle == NULL) {
ret = EAGAIN;
goto label_return;
}
READ(handle, void *);
ret = 0;
label_return:
return ret;
}
static int
experimental_hooks_remove_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
WRITEONLY();
void *handle = NULL;
WRITE(handle, void *);
if (handle == NULL) {
ret = EINVAL;
goto label_return;
}
hook_remove(tsd_tsdn(tsd), handle);
ret = 0;
label_return:
return ret;
}
static int
experimental_thread_activity_callback_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (!config_stats) {
return ENOENT;
}
activity_callback_thunk_t t_old = tsd_activity_callback_thunk_get(tsd);
READ(t_old, activity_callback_thunk_t);
if (newp != NULL) {
/*
* This initialization is unnecessary. If it's omitted, though,
* clang gets confused and warns on the subsequent use of t_new.
*/
activity_callback_thunk_t t_new = {NULL, NULL};
WRITE(t_new, activity_callback_thunk_t);
tsd_activity_callback_thunk_set(tsd, t_new);
}
ret = 0;
label_return:
return ret;
}
/*
* Output six memory utilization entries for an input pointer, the first one of
* type (void *) and the remaining five of type size_t, describing the following
* (in the same order):
*
* (a) memory address of the extent a potential reallocation would go into,
* == the five fields below describe about the extent the pointer resides in ==
* (b) number of free regions in the extent,
* (c) number of regions in the extent,
* (d) size of the extent in terms of bytes,
* (e) total number of free regions in the bin the extent belongs to, and
* (f) total number of regions in the bin the extent belongs to.
*
* Note that "(e)" and "(f)" are only available when stats are enabled;
* otherwise their values are undefined.
*
* This API is mainly intended for small class allocations, where extents are
* used as slab. Note that if the bin the extent belongs to is completely
* full, "(a)" will be NULL.
*
* In case of large class allocations, "(a)" will be NULL, and "(e)" and "(f)"
* will be zero (if stats are enabled; otherwise undefined). The other three
* fields will be properly set though the values are trivial: "(b)" will be 0,
* "(c)" will be 1, and "(d)" will be the usable size.
*
* The input pointer and size are respectively passed in by newp and newlen,
* and the output fields and size are respectively oldp and *oldlenp.
*
* It can be beneficial to define the following macros to make it easier to
* access the output:
*
* #define SLABCUR_READ(out) (*(void **)out)
* #define COUNTS(out) ((size_t *)((void **)out + 1))
* #define NFREE_READ(out) COUNTS(out)[0]
* #define NREGS_READ(out) COUNTS(out)[1]
* #define SIZE_READ(out) COUNTS(out)[2]
* #define BIN_NFREE_READ(out) COUNTS(out)[3]
* #define BIN_NREGS_READ(out) COUNTS(out)[4]
*
* and then write e.g. NFREE_READ(oldp) to fetch the output. See the unit test
* test_query in test/unit/extent_util.c for an example.
*
* For a typical defragmentation workflow making use of this API for
* understanding the fragmentation level, please refer to the comment for
* experimental_utilization_batch_query_ctl.
*
* It's up to the application how to determine the significance of
* fragmentation relying on the outputs returned. Possible choices are:
*
* (a) if extent utilization ratio is below certain threshold,
* (b) if extent memory consumption is above certain threshold,
* (c) if extent utilization ratio is significantly below bin utilization ratio,
* (d) if input pointer deviates a lot from potential reallocation address, or
* (e) some selection/combination of the above.
*
* The caller needs to make sure that the input/output arguments are valid,
* in particular, that the size of the output is correct, i.e.:
*
* *oldlenp = sizeof(void *) + sizeof(size_t) * 5
*
* Otherwise, the function immediately returns EINVAL without touching anything.
*
* In the rare case where there's no associated extent found for the input
* pointer, the function zeros out all output fields and return. Please refer
* to the comment for experimental_utilization_batch_query_ctl to understand the
* motivation from C++.
*/
static int
experimental_utilization_query_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
assert(sizeof(inspect_extent_util_stats_verbose_t)
== sizeof(void *) + sizeof(size_t) * 5);
if (oldp == NULL || oldlenp == NULL
|| *oldlenp != sizeof(inspect_extent_util_stats_verbose_t)
|| newp == NULL) {
ret = EINVAL;
goto label_return;
}
void *ptr = NULL;
WRITE(ptr, void *);
inspect_extent_util_stats_verbose_t *util_stats
= (inspect_extent_util_stats_verbose_t *)oldp;
inspect_extent_util_stats_verbose_get(tsd_tsdn(tsd), ptr,
&util_stats->nfree, &util_stats->nregs, &util_stats->size,
&util_stats->bin_nfree, &util_stats->bin_nregs,
&util_stats->slabcur_addr);
ret = 0;
label_return:
return ret;
}
/*
* Given an input array of pointers, output three memory utilization entries of
* type size_t for each input pointer about the extent it resides in:
*
* (a) number of free regions in the extent,
* (b) number of regions in the extent, and
* (c) size of the extent in terms of bytes.
*
* This API is mainly intended for small class allocations, where extents are
* used as slab. In case of large class allocations, the outputs are trivial:
* "(a)" will be 0, "(b)" will be 1, and "(c)" will be the usable size.
*
* Note that multiple input pointers may reside on a same extent so the output
* fields may contain duplicates.
*
* The format of the input/output looks like:
*
* input[0]: 1st_pointer_to_query | output[0]: 1st_extent_n_free_regions
* | output[1]: 1st_extent_n_regions
* | output[2]: 1st_extent_size
* input[1]: 2nd_pointer_to_query | output[3]: 2nd_extent_n_free_regions
* | output[4]: 2nd_extent_n_regions
* | output[5]: 2nd_extent_size
* ... | ...
*
* The input array and size are respectively passed in by newp and newlen, and
* the output array and size are respectively oldp and *oldlenp.
*
* It can be beneficial to define the following macros to make it easier to
* access the output:
*
* #define NFREE_READ(out, i) out[(i) * 3]
* #define NREGS_READ(out, i) out[(i) * 3 + 1]
* #define SIZE_READ(out, i) out[(i) * 3 + 2]
*
* and then write e.g. NFREE_READ(oldp, i) to fetch the output. See the unit
* test test_batch in test/unit/extent_util.c for a concrete example.
*
* A typical workflow would be composed of the following steps:
*
* (1) flush tcache: mallctl("thread.tcache.flush", ...)
* (2) initialize input array of pointers to query fragmentation
* (3) allocate output array to hold utilization statistics
* (4) query utilization: mallctl("experimental.utilization.batch_query", ...)
* (5) (optional) decide if it's worthwhile to defragment; otherwise stop here
* (6) disable tcache: mallctl("thread.tcache.enabled", ...)
* (7) defragment allocations with significant fragmentation, e.g.:
* for each allocation {
* if it's fragmented {
* malloc(...);
* memcpy(...);
* free(...);
* }
* }
* (8) enable tcache: mallctl("thread.tcache.enabled", ...)
*
* The application can determine the significance of fragmentation themselves
* relying on the statistics returned, both at the overall level i.e. step "(5)"
* and at individual allocation level i.e. within step "(7)". Possible choices
* are:
*
* (a) whether memory utilization ratio is below certain threshold,
* (b) whether memory consumption is above certain threshold, or
* (c) some combination of the two.
*
* The caller needs to make sure that the input/output arrays are valid and
* their sizes are proper as well as matched, meaning:
*
* (a) newlen = n_pointers * sizeof(const void *)
* (b) *oldlenp = n_pointers * sizeof(size_t) * 3
* (c) n_pointers > 0
*
* Otherwise, the function immediately returns EINVAL without touching anything.
*
* In the rare case where there's no associated extent found for some pointers,
* rather than immediately terminating the computation and raising an error,
* the function simply zeros out the corresponding output fields and continues
* the computation until all input pointers are handled. The motivations of
* such a design are as follows:
*
* (a) The function always either processes nothing or processes everything, and
* never leaves the output half touched and half untouched.
*
* (b) It facilitates usage needs especially common in C++. A vast variety of
* C++ objects are instantiated with multiple dynamic memory allocations. For
* example, std::string and std::vector typically use at least two allocations,
* one for the metadata and one for the actual content. Other types may use
* even more allocations. When inquiring about utilization statistics, the
* caller often wants to examine into all such allocations, especially internal
* one(s), rather than just the topmost one. The issue comes when some
* implementations do certain optimizations to reduce/aggregate some internal
* allocations, e.g. putting short strings directly into the metadata, and such
* decisions are not known to the caller. Therefore, we permit pointers to
* memory usages that may not be returned by previous malloc calls, and we
* provide the caller a convenient way to identify such cases.
*/
static int
experimental_utilization_batch_query_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
assert(sizeof(inspect_extent_util_stats_t) == sizeof(size_t) * 3);
const size_t len = newlen / sizeof(const void *);
if (oldp == NULL || oldlenp == NULL || newp == NULL || newlen == 0
|| newlen != len * sizeof(const void *)
|| *oldlenp != len * sizeof(inspect_extent_util_stats_t)) {
ret = EINVAL;
goto label_return;
}
void **ptrs = (void **)newp;
inspect_extent_util_stats_t *util_stats =
(inspect_extent_util_stats_t *)oldp;
size_t i;
for (i = 0; i < len; ++i) {
inspect_extent_util_stats_get(tsd_tsdn(tsd), ptrs[i],
&util_stats[i].nfree, &util_stats[i].nregs,
&util_stats[i].size);
}
ret = 0;
label_return:
return ret;
}
static const ctl_named_node_t *
experimental_arenas_i_index(tsdn_t *tsdn, const size_t *mib,
size_t miblen, size_t i) {
const ctl_named_node_t *ret;
malloc_mutex_lock(tsdn, &ctl_mtx);
if (ctl_arenas_i_verify(i)) {
ret = NULL;
goto label_return;
}
ret = super_experimental_arenas_i_node;
label_return:
malloc_mutex_unlock(tsdn, &ctl_mtx);
return ret;
}
static int
experimental_arenas_i_pactivep_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
if (!config_stats) {
return ENOENT;
}
if (oldp == NULL || oldlenp == NULL || *oldlenp != sizeof(size_t *)) {
return EINVAL;
}
unsigned arena_ind;
arena_t *arena;
int ret;
size_t *pactivep;
malloc_mutex_lock(tsd_tsdn(tsd), &ctl_mtx);
READONLY();
MIB_UNSIGNED(arena_ind, 2);
if (arena_ind < narenas_total_get() && (arena =
arena_get(tsd_tsdn(tsd), arena_ind, false)) != NULL) {
#if defined(JEMALLOC_GCC_ATOMIC_ATOMICS) || \
defined(JEMALLOC_GCC_SYNC_ATOMICS) || defined(_MSC_VER)
/* Expose the underlying counter for fast read. */
pactivep = (size_t *)&(arena->pa_shard.nactive.repr);
READ(pactivep, size_t *);
ret = 0;
#else
ret = EFAULT;
#endif
} else {
ret = EFAULT;
}
label_return:
malloc_mutex_unlock(tsd_tsdn(tsd), &ctl_mtx);
return ret;
}
static int
experimental_prof_recent_alloc_max_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (!(config_prof && opt_prof)) {
ret = ENOENT;
goto label_return;
}
ssize_t old_max;
if (newp != NULL) {
if (newlen != sizeof(ssize_t)) {
ret = EINVAL;
goto label_return;
}
ssize_t max = *(ssize_t *)newp;
if (max < -1) {
ret = EINVAL;
goto label_return;
}
old_max = prof_recent_alloc_max_ctl_write(tsd, max);
} else {
old_max = prof_recent_alloc_max_ctl_read();
}
READ(old_max, ssize_t);
ret = 0;
label_return:
return ret;
}
typedef struct write_cb_packet_s write_cb_packet_t;
struct write_cb_packet_s {
write_cb_t *write_cb;
void *cbopaque;
};
static int
experimental_prof_recent_alloc_dump_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
if (!(config_prof && opt_prof)) {
ret = ENOENT;
goto label_return;
}
assert(sizeof(write_cb_packet_t) == sizeof(void *) * 2);
WRITEONLY();
write_cb_packet_t write_cb_packet;
ASSURED_WRITE(write_cb_packet, write_cb_packet_t);
prof_recent_alloc_dump(tsd, write_cb_packet.write_cb,
write_cb_packet.cbopaque);
ret = 0;
label_return:
return ret;
}
typedef struct batch_alloc_packet_s batch_alloc_packet_t;
struct batch_alloc_packet_s {
void **ptrs;
size_t num;
size_t size;
int flags;
};
static int
experimental_batch_alloc_ctl(tsd_t *tsd, const size_t *mib,
size_t miblen, void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
VERIFY_READ(size_t);
batch_alloc_packet_t batch_alloc_packet;
ASSURED_WRITE(batch_alloc_packet, batch_alloc_packet_t);
size_t filled = batch_alloc(batch_alloc_packet.ptrs,
batch_alloc_packet.num, batch_alloc_packet.size,
batch_alloc_packet.flags);
READ(filled, size_t);
ret = 0;
label_return:
return ret;
}
static int
prof_stats_bins_i_live_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned binind;
prof_stats_t stats;
if (!(config_prof && opt_prof && opt_prof_stats)) {
ret = ENOENT;
goto label_return;
}
READONLY();
MIB_UNSIGNED(binind, 3);
if (binind >= SC_NBINS) {
ret = EINVAL;
goto label_return;
}
prof_stats_get_live(tsd, (szind_t)binind, &stats);
READ(stats, prof_stats_t);
ret = 0;
label_return:
return ret;
}
static int
prof_stats_bins_i_accum_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned binind;
prof_stats_t stats;
if (!(config_prof && opt_prof && opt_prof_stats)) {
ret = ENOENT;
goto label_return;
}
READONLY();
MIB_UNSIGNED(binind, 3);
if (binind >= SC_NBINS) {
ret = EINVAL;
goto label_return;
}
prof_stats_get_accum(tsd, (szind_t)binind, &stats);
READ(stats, prof_stats_t);
ret = 0;
label_return:
return ret;
}
static const ctl_named_node_t *
prof_stats_bins_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
size_t i) {
if (!(config_prof && opt_prof && opt_prof_stats)) {
return NULL;
}
if (i >= SC_NBINS) {
return NULL;
}
return super_prof_stats_bins_i_node;
}
static int
prof_stats_lextents_i_live_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned lextent_ind;
prof_stats_t stats;
if (!(config_prof && opt_prof && opt_prof_stats)) {
ret = ENOENT;
goto label_return;
}
READONLY();
MIB_UNSIGNED(lextent_ind, 3);
if (lextent_ind >= SC_NSIZES - SC_NBINS) {
ret = EINVAL;
goto label_return;
}
prof_stats_get_live(tsd, (szind_t)(lextent_ind + SC_NBINS), &stats);
READ(stats, prof_stats_t);
ret = 0;
label_return:
return ret;
}
static int
prof_stats_lextents_i_accum_ctl(tsd_t *tsd, const size_t *mib, size_t miblen,
void *oldp, size_t *oldlenp, void *newp, size_t newlen) {
int ret;
unsigned lextent_ind;
prof_stats_t stats;
if (!(config_prof && opt_prof && opt_prof_stats)) {
ret = ENOENT;
goto label_return;
}
READONLY();
MIB_UNSIGNED(lextent_ind, 3);
if (lextent_ind >= SC_NSIZES - SC_NBINS) {
ret = EINVAL;
goto label_return;
}
prof_stats_get_accum(tsd, (szind_t)(lextent_ind + SC_NBINS), &stats);
READ(stats, prof_stats_t);
ret = 0;
label_return:
return ret;
}
static const ctl_named_node_t *
prof_stats_lextents_i_index(tsdn_t *tsdn, const size_t *mib, size_t miblen,
size_t i) {
if (!(config_prof && opt_prof && opt_prof_stats)) {
return NULL;
}
if (i >= SC_NSIZES - SC_NBINS) {
return NULL;
}
return super_prof_stats_lextents_i_node;
}