43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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// tiny_class_stats_box.h - Lightweight per-thread class stats (OBSERVE layer)
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//
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// Purpose:
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// - Provide per-class counters without atomics for cheap observation.
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// - Hot paths call small inline helpers; aggregation/printing can be added later.
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#ifndef TINY_CLASS_STATS_BOX_H
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#define TINY_CLASS_STATS_BOX_H
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#include <stdint.h>
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#include "../hakmem_tiny_config.h"
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typedef struct TinyClassStatsThread {
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uint64_t uc_miss[TINY_NUM_CLASSES]; // unified_cache_refill() hits
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uint64_t warm_hit[TINY_NUM_CLASSES]; // warm pool successes
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uint64_t shared_lock[TINY_NUM_CLASSES]; // shared pool lock acquisitions (hook as needed)
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} TinyClassStatsThread;
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extern __thread TinyClassStatsThread g_tiny_class_stats;
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static inline void tiny_class_stats_on_uc_miss(int ci) {
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if (ci >= 0 && ci < TINY_NUM_CLASSES) {
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g_tiny_class_stats.uc_miss[ci]++;
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}
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}
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static inline void tiny_class_stats_on_warm_hit(int ci) {
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if (ci >= 0 && ci < TINY_NUM_CLASSES) {
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g_tiny_class_stats.warm_hit[ci]++;
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}
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}
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static inline void tiny_class_stats_on_shared_lock(int ci) {
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if (ci >= 0 && ci < TINY_NUM_CLASSES) {
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g_tiny_class_stats.shared_lock[ci]++;
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}
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}
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// Optional: reset per-thread counters (cold path only).
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void tiny_class_stats_reset_thread(void);
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#endif // TINY_CLASS_STATS_BOX_H
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