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// This file is part of ThreadSanitizer, a dynamic data race detector.
// Author: Konstantin Serebryany.
// Author: Timur Iskhodzhanov.
#ifndef TS_STATS_
#define TS_STATS_
#include "dynamic_annotations.h"
#include "ts_util.h"
// Statistic counters for each thread.
// For stats accessed concurrently from different threads
// we don't want to use global stats to avoid cache line ping-pong.
struct ThreadLocalStats {
ThreadLocalStats() { Clear(); }
void Clear() {
memset(this, 0, sizeof(*this));
}
uintptr_t memory_access_sizes[18];
uintptr_t events[LAST_EVENT];
uintptr_t unlocked_access_ok;
uintptr_t n_fast_access1, n_fast_access2, n_fast_access4, n_fast_access8,
n_slow_access1, n_slow_access2, n_slow_access4, n_slow_access8,
n_very_slow_access, n_access_slow_iter;
uintptr_t mops_per_trace[16];
uintptr_t locks_per_trace[16];
uintptr_t locked_access[8];
uintptr_t history_uses_same_segment, history_creates_new_segment,
history_reuses_segment, history_uses_preallocated_segment;
uintptr_t msm_branch_count[16];
uintptr_t access_to_first_1g;
uintptr_t access_to_first_2g;
uintptr_t access_to_first_4g;
};
// Statistic counters for the entire tool, including aggregated
// ThreadLocalStats (which are made private so that one can not
// increment them using the global stats object).
struct Stats : private ThreadLocalStats {
Stats() {
memset(this, 0, sizeof(*this));
ANNOTATE_BENIGN_RACE(&vts_clone, "Race on vts_clone");
ANNOTATE_BENIGN_RACE(&ignore_below_cache_miss,
"Race on ignore_below_cache_miss");
ANNOTATE_BENIGN_RACE_SIZED(msm_branch_count, sizeof(msm_branch_count),
"Race on msm_branch_count[]");
}
void Add(const ThreadLocalStats &s) {
uintptr_t *p1 = (uintptr_t*)this;
uintptr_t *p2 = (uintptr_t*)&s;
size_t n = sizeof(s) / sizeof(uintptr_t);
for (size_t i = 0; i < n; i++) {
p1[i] += p2[i];
}
}
void PrintStats() {
PrintEventStats();
Printf(" VTS: created small/big: %'ld / %'ld; "
"deleted small/big: %'ld / %'ld; cloned: %'ld\n",
vts_create_small, vts_create_big,
vts_delete_small, vts_delete_big, vts_clone);
Printf(" vts_total_create = %'ld; avg=%'ld; delete = %'ld\n",
vts_total_create,
vts_total_create / (vts_create_small + vts_create_big + 1),
vts_total_delete);
Printf(" n_seg_hb = %'ld\n", n_seg_hb);
Printf(" n_vts_hb = %'ld\n", n_vts_hb);
Printf(" n_vts_hb_cached = %'ld\n", n_vts_hb_cached);
Printf(" memory access:\n"
" 1: %'ld / %'ld\n"
" 2: %'ld / %'ld\n"
" 4: %'ld / %'ld\n"
" 8: %'ld / %'ld\n"
" s: %'ld\n",
n_fast_access1, n_slow_access1,
n_fast_access2, n_slow_access2,
n_fast_access4, n_slow_access4,
n_fast_access8, n_slow_access8,
n_very_slow_access);
PrintStatsForCache();
// Printf(" Mops:\n"
// " total = %'ld\n"
// " unique = %'ld\n",
// mops_total, mops_uniq);
Printf(" Publish: set: %'ld; get: %'ld; clear: %'ld\n",
publish_set, publish_get, publish_clear);
Printf(" PcTo: all: %'ld\n", pc_to_strings);
Printf(" StackTrace: create: %'ld; delete %'ld\n",
stack_trace_create, stack_trace_delete);
Printf(" History segments: same: %'ld; reuse: %'ld; "
"preallocated: %'ld; new: %'ld\n",
history_uses_same_segment, history_reuses_segment,
history_uses_preallocated_segment, history_creates_new_segment);
Printf(" Forget all history: %'ld\n", n_forgets);
PrintStatsForSeg();
PrintStatsForSS();
PrintStatsForLS();
}
void PrintStatsForSS() {
Printf(" SegmentSet: created: %'ld; reused: %'ld;"
" find: %'ld; recycle: %'ld\n",
ss_create, ss_reuse, ss_find, ss_recycle);
Printf(" sizes: 2: %'ld; 3: %'ld; 4: %'ld; other: %'ld\n",
ss_size_2, ss_size_3, ss_size_4, ss_size_other);
// SSEq is called at least (ss_find + ss_recycle) times since
// FindExistingOrAlocateAndCopy calls map_.find()
// and RecycleOneSegmentSet calls map_.erase(it)
// Both find() and erase(it) require at least one call to SSHash and SSEq.
//
// Apart from SSHash call locations mentioned above,
// SSHash is called for each AllocateAndCopy (ss_create + ss_reuse) times
// for insert() AFTER it has already been called
// by FindExistingOrAlocateAndCopy in case find() returned map_.end().
// Hence the factor of 2.
uintptr_t sseq_estimated = ss_find + ss_recycle,
sshash_estimated = sseq_estimated + 2 * (ss_create + ss_reuse);
Printf(" SSHash called %12ld times (vs. %12ld = +%d%%)\n"
" SSEq called %12ld times (vs. %12ld = +%d%%)\n",
sshash_calls, sshash_estimated,
(sshash_calls - sshash_estimated)/(sshash_estimated/100 + 1),
sseq_calls, sseq_estimated,
(sseq_calls - sseq_estimated )/(sseq_estimated/100 + 1));
}
void PrintStatsForCache() {
Printf(" Cache:\n"
" new = %'ld\n"
" delete = %'ld\n"
" fetch = %'ld\n"
" storage = %'ld\n",
cache_new_line,
cache_delete_empty_line, cache_fetch,
cache_max_storage_size);
}
void PrintStatsForSeg() {
Printf(" Segment: created: %'ld; reused: %'ld\n",
seg_create, seg_reuse);
}
void PrintStatsForLS() {
Printf(" LockSet add: 0: %'ld; 1 : %'ld; n : %'ld\n",
ls_add_to_empty, ls_add_to_singleton, ls_add_to_multi);
Printf(" LockSet rem: 1: %'ld; n : %'ld\n",
ls_remove_from_singleton, ls_remove_from_multi);
Printf(" LockSet cache: add : %'ld; rem : %'ld; fast: %'ld\n",
ls_add_cache_hit, ls_rem_cache_hit, ls_cache_fast);
Printf(" LockSet size: 2: %'ld 3: %'ld 4: %'ld 5: %'ld other: %'ld\n",
ls_size_2, ls_size_3, ls_size_4, ls_size_5, ls_size_other);
}
void PrintEventStats() {
uintptr_t total = 0;
for (int i = 0; i < LAST_EVENT; i++) {
if (events[i]) {
Printf(" %25s: %'ld\n", Event::TypeString((EventType)i),
events[i]);
}
total += events[i];
}
Printf(" %25s: %'ld\n", "Total", total);
for (size_t i = 0; i < TS_ARRAY_SIZE(memory_access_sizes); i++) {
if (memory_access_sizes[i]) {
Printf(" mop[%d]: %'ld\n", i, memory_access_sizes[i]);
}
}
for (size_t i = 0; i < TS_ARRAY_SIZE(mops_per_trace); i++) {
Printf(" mops_per_trace[%d] = %'ld\n", i, mops_per_trace[i]);
}
for (size_t i = 0; i < TS_ARRAY_SIZE(locks_per_trace); i++) {
Printf(" locks_per_trace[%d] = %'ld\n", i, locks_per_trace[i]);
}
uintptr_t total_locks = 0;
for (size_t i = 0; i < TS_ARRAY_SIZE(lock_sites); i++) {
if(lock_sites[i] == 0) continue;
Printf("lock_sites[%ld]=%ld\n", i, lock_sites[i]);
total_locks += lock_sites[i];
}
Printf("lock_sites[*]=%ld\n", total_locks);
Printf("futex_wait =%ld\n", futex_wait);
Printf("unlocked_access_ok =%'ld\n", unlocked_access_ok);
uintptr_t all_locked_access = 0;
for (size_t i = 0; i < TS_ARRAY_SIZE(locked_access); i++) {
uintptr_t t = locked_access[i];
if (t) Printf("locked_access[%ld] =%'ld\n", i, t);
all_locked_access += t;
}
Printf("locked_access[*] =%'ld\n", all_locked_access);
Printf("try_acquire_line_spin =%ld\n", try_acquire_line_spin);
Printf("access to first 1/2/4 G: %'ld %'ld %'ld\n",
access_to_first_1g, access_to_first_2g, access_to_first_4g);
for (size_t i = 0; i < TS_ARRAY_SIZE(tleb_flush); i++) {
if(tleb_flush[i] == 0) continue;
Printf("tleb_flush[%ld]=%ld\n", i, tleb_flush[i]);
}
Printf("IgnoreBelowCache miss=%ld\n", ignore_below_cache_miss);
for (size_t i = 0; i < TS_ARRAY_SIZE(msm_branch_count); i++) {
if (msm_branch_count[i])
Printf("msm_branch_count[%02d] = %'ld\n", i, msm_branch_count[i]);
}
if (read_proc_self_stats)
Printf("read_proc_self_stats =%ld\n", read_proc_self_stats);
}
uintptr_t n_vts_hb;
uintptr_t n_vts_hb_cached;
uintptr_t n_seg_hb;
uintptr_t ls_add_to_empty, ls_add_to_singleton, ls_add_to_multi,
ls_remove_from_singleton, ls_remove_from_multi,
ls_add_cache_hit, ls_rem_cache_hit,
ls_cache_fast,
ls_size_2, ls_size_3, ls_size_4, ls_size_5, ls_size_other;
uintptr_t cache_new_line;
uintptr_t cache_delete_empty_line;
uintptr_t cache_fetch;
uintptr_t cache_max_storage_size;
uintptr_t mops_total;
uintptr_t mops_uniq;
uintptr_t vts_create_big, vts_create_small,
vts_clone, vts_delete_small, vts_delete_big,
vts_total_delete, vts_total_create;
uintptr_t ss_create, ss_reuse, ss_find, ss_recycle;
uintptr_t ss_size_2, ss_size_3, ss_size_4, ss_size_other;
uintptr_t sshash_calls, sseq_calls;
uintptr_t seg_create, seg_reuse;
uintptr_t publish_set, publish_get, publish_clear;
uintptr_t pc_to_strings;
uintptr_t stack_trace_create, stack_trace_delete;
uintptr_t n_forgets;
uintptr_t lock_sites[20];
uintptr_t tleb_flush[10];
uintptr_t ignore_below_cache_miss;
uintptr_t try_acquire_line_spin;
uintptr_t futex_wait;
uintptr_t read_proc_self_stats;
};
// end. {{{1
#endif // TS_STATS_
// vim:shiftwidth=2:softtabstop=2:expandtab:tw=80