| /* |
| * Copyright (c) 2015 The TCPDUMP project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef netdissect_timeval_operations_h |
| #define netdissect_timeval_operations_h |
| |
| /* Operations on timevals. */ |
| |
| #ifndef _MICRO_PER_SEC |
| #define _MICRO_PER_SEC 1000000 |
| #endif |
| |
| #ifndef _NANO_PER_SEC |
| #define _NANO_PER_SEC 1000000000 |
| #endif |
| |
| #define netdissect_timevalclear(tvp) ((tvp)->tv_sec = (tvp)->tv_usec = 0) |
| |
| #define netdissect_timevalisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) |
| |
| #define netdissect_timevalcmp(tvp, uvp, cmp) \ |
| (((tvp)->tv_sec == (uvp)->tv_sec) ? \ |
| ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ |
| ((tvp)->tv_sec cmp (uvp)->tv_sec)) |
| |
| #define netdissect_timevaladd(tvp, uvp, vvp, nano_prec) \ |
| do { \ |
| (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ |
| (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ |
| if (nano_prec) { \ |
| if ((vvp)->tv_usec >= _NANO_PER_SEC) { \ |
| (vvp)->tv_sec++; \ |
| (vvp)->tv_usec -= _NANO_PER_SEC; \ |
| } \ |
| } else { \ |
| if ((vvp)->tv_usec >= _MICRO_PER_SEC) { \ |
| (vvp)->tv_sec++; \ |
| (vvp)->tv_usec -= _MICRO_PER_SEC; \ |
| } \ |
| } \ |
| } while (0) |
| |
| #define netdissect_timevalsub(tvp, uvp, vvp, nano_prec) \ |
| do { \ |
| (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ |
| (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ |
| if ((vvp)->tv_usec < 0) { \ |
| (vvp)->tv_sec--; \ |
| (vvp)->tv_usec += (nano_prec ? _NANO_PER_SEC : \ |
| _MICRO_PER_SEC); \ |
| } \ |
| } while (0) |
| |
| #endif /* netdissect_timeval_operations_h */ |