85 lines
4.0 KiB
C
85 lines
4.0 KiB
C
// tiny_class_stats_box.c - Thread-local stats storage for Tiny classes
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#include "tiny_class_stats_box.h"
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#include "tiny_mem_stats_box.h"
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#include <stdio.h>
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#include <string.h>
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__thread TinyClassStatsThread g_tiny_class_stats = {0};
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_Atomic uint64_t g_tiny_class_stats_uc_miss_global[TINY_NUM_CLASSES] = {0};
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_Atomic uint64_t g_tiny_class_stats_warm_hit_global[TINY_NUM_CLASSES] = {0};
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_Atomic uint64_t g_tiny_class_stats_shared_lock_global[TINY_NUM_CLASSES] = {0};
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_Atomic uint64_t g_tiny_class_stats_tls_carve_attempt_global[TINY_NUM_CLASSES] = {0};
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_Atomic uint64_t g_tiny_class_stats_tls_carve_success_global[TINY_NUM_CLASSES] = {0};
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static _Atomic int g_tiny_class_stats_mem_recorded = 0;
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static void tiny_class_stats_record_mem_once(void) {
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if (atomic_exchange_explicit(&g_tiny_class_stats_mem_recorded, 1, memory_order_acq_rel) == 0) {
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats));
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats_uc_miss_global));
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats_warm_hit_global));
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats_shared_lock_global));
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats_tls_carve_attempt_global));
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tiny_mem_stats_add_policy_stats((ssize_t)sizeof(g_tiny_class_stats_tls_carve_success_global));
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}
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}
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void tiny_class_stats_reset_thread(void) {
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memset(&g_tiny_class_stats, 0, sizeof(g_tiny_class_stats));
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}
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void tiny_class_stats_snapshot_thread(TinyClassStatsThread* out) {
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if (!out) return;
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tiny_class_stats_record_mem_once();
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memcpy(out, &g_tiny_class_stats, sizeof(*out));
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}
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void tiny_class_stats_snapshot_global(TinyClassStatsThread* out) {
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if (!out) return;
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tiny_class_stats_record_mem_once();
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for (int i = 0; i < TINY_NUM_CLASSES; i++) {
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out->uc_miss[i] = atomic_load_explicit(&g_tiny_class_stats_uc_miss_global[i],
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memory_order_relaxed);
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out->warm_hit[i] = atomic_load_explicit(&g_tiny_class_stats_warm_hit_global[i],
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memory_order_relaxed);
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out->shared_lock[i] = atomic_load_explicit(&g_tiny_class_stats_shared_lock_global[i],
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memory_order_relaxed);
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out->tls_carve_attempt[i] = atomic_load_explicit(
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&g_tiny_class_stats_tls_carve_attempt_global[i], memory_order_relaxed);
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out->tls_carve_success[i] = atomic_load_explicit(
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&g_tiny_class_stats_tls_carve_success_global[i], memory_order_relaxed);
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}
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}
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static void tiny_class_stats_dump_common(FILE* out,
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const char* tag,
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const TinyClassStatsThread* stats) {
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if (!(out && stats)) return;
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fprintf(out, "%s class uc_miss warm_hit shared_lock tls_carve_attempt tls_carve_success\n",
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tag ? tag : "[STATS]");
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for (int c = 0; c < TINY_NUM_CLASSES; c++) {
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if (stats->uc_miss[c] || stats->warm_hit[c] || stats->shared_lock[c] ||
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stats->tls_carve_attempt[c] || stats->tls_carve_success[c]) {
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fprintf(out, " C%d: %llu %llu %llu %llu %llu\n",
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c,
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(unsigned long long)stats->uc_miss[c],
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(unsigned long long)stats->warm_hit[c],
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(unsigned long long)stats->shared_lock[c],
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(unsigned long long)stats->tls_carve_attempt[c],
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(unsigned long long)stats->tls_carve_success[c]);
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}
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}
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}
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void tiny_class_stats_dump_thread(FILE* out, const char* tag) {
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TinyClassStatsThread snap = {0};
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tiny_class_stats_snapshot_thread(&snap);
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tiny_class_stats_dump_common(out, tag ? tag : "[THREAD_STATS]", &snap);
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}
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void tiny_class_stats_dump_global(FILE* out, const char* tag) {
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TinyClassStatsThread snap = {0};
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tiny_class_stats_snapshot_global(&snap);
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tiny_class_stats_dump_common(out, tag ? tag : "[GLOBAL_STATS]", &snap);
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}
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