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heap.h  view on Meta::CPAN

typedef struct {
    uint32_t magic;
    uint32_t version;
    uint64_t capacity;
    uint64_t total_size;
    uint64_t data_off;
    uint8_t  _pad0[32];

    uint32_t size;             /* 64: current element count (futex word for pop) */
    uint32_t mutex;            /* 68: 0=free, HEAP_MUTEX_BIT|pid=locked */
    uint32_t mutex_waiters;    /* 72 */
    uint32_t waiters_pop;      /* 76 */
    uint64_t stat_pushes;      /* 80 */
    uint64_t stat_pops;        /* 88 */
    uint64_t stat_waits;       /* 96 */
    uint64_t stat_timeouts;    /* 104 */
    uint64_t stat_recoveries;  /* 112 */
    uint8_t  _pad1[8];         /* 120-127 */
} HeapHeader;