46 lines
2.1 KiB
C
46 lines
2.1 KiB
C
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// mmap_trace_patch.h - Lightweight mmap instrumentation
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#ifndef MMAP_TRACE_PATCH_H
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#define MMAP_TRACE_PATCH_H
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#include <stdatomic.h>
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#include <stdio.h>
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// Global counters for mmap sources
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static _Atomic uint64_t g_mmap_count_superslab = 0;
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static _Atomic uint64_t g_mmap_count_mid = 0;
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static _Atomic uint64_t g_mmap_count_l25 = 0;
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static _Atomic uint64_t g_mmap_count_ace = 0;
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static _Atomic uint64_t g_mmap_count_final = 0; // Final fallback in hak_alloc_api
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static _Atomic uint64_t g_mmap_count_other = 0;
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// Helper macros for instrumentation
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#define MMAP_TRACE_SUPERSLAB() atomic_fetch_add(&g_mmap_count_superslab, 1)
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#define MMAP_TRACE_MID() atomic_fetch_add(&g_mmap_count_mid, 1)
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#define MMAP_TRACE_L25() atomic_fetch_add(&g_mmap_count_l25, 1)
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#define MMAP_TRACE_ACE() atomic_fetch_add(&g_mmap_count_ace, 1)
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#define MMAP_TRACE_FINAL() atomic_fetch_add(&g_mmap_count_final, 1)
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#define MMAP_TRACE_OTHER() atomic_fetch_add(&g_mmap_count_other, 1)
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// Print summary
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static inline void mmap_trace_print_summary(void) {
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uint64_t ss = atomic_load(&g_mmap_count_superslab);
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uint64_t mid = atomic_load(&g_mmap_count_mid);
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uint64_t l25 = atomic_load(&g_mmap_count_l25);
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uint64_t ace = atomic_load(&g_mmap_count_ace);
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uint64_t final = atomic_load(&g_mmap_count_final);
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uint64_t other = atomic_load(&g_mmap_count_other);
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uint64_t total = ss + mid + l25 + ace + final + other;
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fprintf(stderr, "\n=== MMAP Source Breakdown ===\n");
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fprintf(stderr, "SuperSlab: %6lu (%.1f%%)\n", ss, ss * 100.0 / total);
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fprintf(stderr, "Mid allocator: %6lu (%.1f%%)\n", mid, mid * 100.0 / total);
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fprintf(stderr, "L25 pool: %6lu (%.1f%%)\n", l25, l25 * 100.0 / total);
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fprintf(stderr, "ACE: %6lu (%.1f%%)\n", ace, ace * 100.0 / total);
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fprintf(stderr, "Final fallback: %6lu (%.1f%%) ← Header overflow!\n", final, final * 100.0 / total);
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fprintf(stderr, "Other: %6lu (%.1f%%)\n", other, other * 100.0 / total);
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fprintf(stderr, "----------------------------\n");
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fprintf(stderr, "TOTAL: %6lu\n", total);
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}
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#endif // MMAP_TRACE_PATCH_H
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