| Elliott Hughes | e2e3bd1 | 2017-05-15 10:59:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2015 The TCPDUMP project |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 15 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 16 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 17 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 18 | * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 20 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 21 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| 22 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 24 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 25 | * POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef netdissect_timeval_operations_h |
| 29 | #define netdissect_timeval_operations_h |
| 30 | |
| 31 | /* Operations on timevals. */ |
| 32 | |
| 33 | #ifndef _MICRO_PER_SEC |
| 34 | #define _MICRO_PER_SEC 1000000 |
| 35 | #endif |
| 36 | |
| 37 | #ifndef _NANO_PER_SEC |
| 38 | #define _NANO_PER_SEC 1000000000 |
| 39 | #endif |
| 40 | |
| 41 | #define netdissect_timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) |
| 42 | |
| 43 | #define netdissect_timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) |
| 44 | |
| 45 | #define netdissect_timevalcmp(tvp, uvp, cmp) \ |
| 46 | (((tvp)->tv_sec == (uvp)->tv_sec) ? \ |
| 47 | ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ |
| 48 | ((tvp)->tv_sec cmp (uvp)->tv_sec)) |
| 49 | |
| 50 | #define netdissect_timevaladd(tvp, uvp, vvp, nano_prec) \ |
| 51 | do { \ |
| 52 | (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ |
| 53 | (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ |
| 54 | if (nano_prec) { \ |
| 55 | if ((vvp)->tv_usec >= _NANO_PER_SEC) { \ |
| 56 | (vvp)->tv_sec++; \ |
| 57 | (vvp)->tv_usec -= _NANO_PER_SEC; \ |
| 58 | } \ |
| 59 | } else { \ |
| 60 | if ((vvp)->tv_usec >= _MICRO_PER_SEC) { \ |
| 61 | (vvp)->tv_sec++; \ |
| 62 | (vvp)->tv_usec -= _MICRO_PER_SEC; \ |
| 63 | } \ |
| 64 | } \ |
| 65 | } while (0) |
| 66 | |
| 67 | #define netdissect_timevalsub(tvp, uvp, vvp, nano_prec) \ |
| 68 | do { \ |
| 69 | (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ |
| 70 | (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ |
| 71 | if ((vvp)->tv_usec < 0) { \ |
| 72 | (vvp)->tv_sec--; \ |
| 73 | (vvp)->tv_usec += (nano_prec ? _NANO_PER_SEC : \ |
| 74 | _MICRO_PER_SEC); \ |
| 75 | } \ |
| 76 | } while (0) |
| 77 | |
| 78 | #endif /* netdissect_timeval_operations_h */ |