| Sylvain Munaut | 07f1103 | 2011-10-21 21:55:29 +0200 | [diff] [blame^] | 1 | /* |
| 2 | * (C) 2011 Sylvain Munaut <tnt@246tNt.com> |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | /*! \defgroup timer Osmocom timers |
| 22 | * @{ |
| 23 | */ |
| 24 | |
| 25 | /*! \file timer_compat.h |
| 26 | * \brief Compatibility header with some helpers |
| 27 | */ |
| 28 | |
| 29 | #ifndef TIMER_COMPAT_H |
| 30 | #define TIMER_COMPAT_H |
| 31 | |
| 32 | |
| 33 | /* Convenience macros for operations on timevals. |
| 34 | NOTE: `timercmp' does not work for >= or <=. */ |
| 35 | |
| 36 | #ifndef timerisset |
| 37 | # define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) |
| 38 | #endif |
| 39 | |
| 40 | #ifndef timerclear |
| 41 | # define timerclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) |
| 42 | #endif |
| 43 | |
| 44 | #ifndef timercmp |
| 45 | # define timercmp(a, b, CMP) \ |
| 46 | (((a)->tv_sec == (b)->tv_sec) ? \ |
| 47 | ((a)->tv_usec CMP (b)->tv_usec) : \ |
| 48 | ((a)->tv_sec CMP (b)->tv_sec)) |
| 49 | #endif |
| 50 | |
| 51 | #ifndef timeradd |
| 52 | # define timeradd(a, b, result) \ |
| 53 | do { \ |
| 54 | (result)->tv_sec = (a)->tv_sec + (b)->tv_sec; \ |
| 55 | (result)->tv_usec = (a)->tv_usec + (b)->tv_usec; \ |
| 56 | if ((result)->tv_usec >= 1000000) \ |
| 57 | { \ |
| 58 | ++(result)->tv_sec; \ |
| 59 | (result)->tv_usec -= 1000000; \ |
| 60 | } \ |
| 61 | } while (0) |
| 62 | #endif |
| 63 | |
| 64 | #ifndef timersub |
| 65 | # define timersub(a, b, result) \ |
| 66 | do { \ |
| 67 | (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ |
| 68 | (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ |
| 69 | if ((result)->tv_usec < 0) { \ |
| 70 | --(result)->tv_sec; \ |
| 71 | (result)->tv_usec += 1000000; \ |
| 72 | } \ |
| 73 | } while (0) |
| 74 | #endif |
| 75 | |
| 76 | |
| 77 | /*! }@ */ |
| 78 | |
| 79 | #endif /* TIMER_COMPAT_H */ |