ref: 8e631b19c4bf009a69489fcdd2e0b8c84a104a15
dir: /hash.h/
typedef union Hkey Hkey;
union Hkey {
void *p;
int v;
};
typedef struct Hmap Hmap;
struct Hmap {
uvlong (*hash)(void*);
int (*cmp)(void*,void*);
int nbs;
int nsz;
int len;
int cap;
uchar *nodes;
};