npj_types.h

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#ifndef NPO_TYPES_H
#define NPO_TYPES_H
 
#include "types.h" /* tuple_t */
 
typedef struct bucket_t        bucket_t;
typedef struct hashtable_t     hashtable_t;
typedef struct bucket_buffer_t bucket_buffer_t;
 
#if PADDED_BUCKET==0
struct bucket_t {
    volatile char     latch;
    /* 3B hole */
    uint32_t          count;
    tuple_t           tuples[BUCKET_SIZE];
    struct bucket_t * next;
};
#else /* PADDED_BUCKET: bucket is padded to cache line size */
struct bucket_t {
    volatile char     latch;
    /* 3B hole */
    uint32_t          count;
    tuple_t           tuples[BUCKET_SIZE];
    struct bucket_t * next;
} __attribute__ ((aligned(CACHE_LINE_SIZE)));
#endif /* PADDED_BUCKET */
 
struct hashtable_t {
    bucket_t * buckets;
    int32_t    num_buckets;
    uint32_t   hash_mask;
    uint32_t   skip_bits;
};
 
struct bucket_buffer_t {
    struct  bucket_buffer_t * next;
    uint32_t count;
    bucket_t buf[OVERFLOW_BUF_SIZE];
};
 
#endif /* NPO_TYPES_H */