| #ifndef _UNIQ_H_ | |
| #define _UNIQ_H_ | |
| #include "types.h" | |
| /* | |
| * UNIQ_T: | |
| * - uniformly-increasing unique ID | |
| * - is safe to compare to numeric 0, and will be equal if uniq_t is invalid | |
| * - will not overflow in any sane timeframe | |
| */ | |
| typedef uint64_t uniq_t; | |
| #define UNIQ_MARKER ((uniq_t)1) /* non-zero (aka: valid) uniq_t guaranteed to be never returned by uniqGetNext() */ | |
| #define UNIQ_FMT FMT64 | |
| #define UNIQ_CONV(x) CNV64(x) | |
| /* get another uniq_t */ | |
| uniq_t uniqGetNext(void); | |
| #endif |