diff options
Diffstat (limited to 'include/osmocom/core/timer_compat.h')
| -rw-r--r-- | include/osmocom/core/timer_compat.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/osmocom/core/timer_compat.h b/include/osmocom/core/timer_compat.h index 77d4ce0a..8fdd0a08 100644 --- a/include/osmocom/core/timer_compat.h +++ b/include/osmocom/core/timer_compat.h @@ -71,5 +71,49 @@ } while (0) #endif +/* Convenience macros for operations on timespecs. + NOTE: `timercmp' does not work for >= or <=. */ + +#ifndef timespecisset +# define timespecisset(tvp) ((tvp)->tv_sec || (tvp)->tv_nsec) +#endif + +#ifndef timespecclear +# define timespecclear(tvp) ((tvp)->tv_sec = (tvp)->tv_nsec = 0) +#endif + +#ifndef timespeccmp +# define timespeccmp(a, b, CMP) \ + (((a)->tv_sec == (b)->tv_sec) ? \ + ((a)->tv_nsec CMP (b)->tv_nsec) : \ + ((a)->tv_sec CMP (b)->tv_sec)) +#endif + +#ifndef timespecadd +# define timespecadd(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ + (result)->tv_nsec = (a)->tv_nsec + (b)->tv_nsec; \ + if ((result)->tv_nsec >= 1000000000) \ + { \ + ++(result)->tv_sec; \ + (result)->tv_nsec -= 1000000000; \ + } \ + } while (0) +#endif + +#ifndef timespecsub +# define timespecsub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec; \ + if ((result)->tv_nsec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_nsec += 1000000000; \ + } \ + } while (0) +#endif + + /*! @} */ |