diff options
Diffstat (limited to 'src/common/compat.h')
| -rw-r--r-- | src/common/compat.h | 47 |
1 files changed, 41 insertions, 6 deletions
diff --git a/src/common/compat.h b/src/common/compat.h index db352de9ee..6d2565ac19 100644 --- a/src/common/compat.h +++ b/src/common/compat.h @@ -335,12 +335,47 @@ struct tm *tor_localtime_r(const time_t *timep, struct tm *result); struct tm *tor_gmtime_r(const time_t *timep, struct tm *result); #endif -/** Return true iff the tvp is related to uvp according to the relational - * operator cmp. Recognized values for cmp are ==, <=, <, >=, and >. */ -#define tor_timercmp(tvp, uvp, cmp) \ - (((tvp)->tv_sec == (uvp)->tv_sec) ? \ - ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ - ((tvp)->tv_sec cmp (uvp)->tv_sec)) +#ifndef timeradd +/** Replacement for timeradd on platforms that do not have it: sets tvout to + * the sum of tv1 and tv2. */ +#define timeradd(tv1,tv2,tvout) \ + do { \ + (tvout)->tv_sec = (tv1)->tv_sec + (tv2)->tv_sec; \ + (tvout)->tv_usec = (tv2)->tv_usec + (tv2)->tv_usec; \ + if ((tvout)->tv_usec >= 1000000) { \ + (tvout)->tv_usec -= 1000000; \ + (tvout)->tv_sec++; \ + } \ + } while (0) +#endif + +#ifndef timersub +/** Replacement for timersub on platforms that do not have it: sets tvout to + * tv1 minus tv2. */ +#define timersub(tv1,tv2,tvout) \ + do { \ + (tvout)->tv_sec = (tv1)->tv_sec - (tv2)->tv_sec; \ + (tvout)->tv_usec = (tv2)->tv_usec - (tv2)->tv_usec; \ + if ((tvout)->tv_usec < 0) { \ + (tvout)->tv_usec += 1000000; \ + (tvout)->tv_sec--; \ + } \ + } while (0) +#endif + +#ifndef timercmp +/** Replacement for timersub on platforms that do not have it: returns true + * iff the relational operator "op" makes the expression tv1 op tv2 true. + * + * Note that while this definition should work for all boolean opeators, some + * platforms' native timercmp definitions do not support >=, <=, or ==. So + * don't use those. + */ +#define timercmp(tv1,tv2,op) \ + (((tv1)->tv_sec == (tv2)->tv_sec) ? \ + ((tv1)->tv_usec op (tv2)->tv_usec) : \ + ((tv1)->tv_sec op (tv2)->tv_sec)) +#endif /* ===== File compatibility */ int tor_open_cloexec(const char *path, int flags, unsigned mode); |