root / omnithread / omni_time.h @ 8b04fb2b
History | View | Annotate | Download (2.8 kB)
| 1 | /* -*- c++ -*- */
|
|---|---|
| 2 | /*
|
| 3 | * Copyright 2007,2008 Free Software Foundation, Inc. |
| 4 | * |
| 5 | * This file is part of GNU Radio |
| 6 | * |
| 7 | * GNU Radio is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 3, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * GNU Radio is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | */ |
| 21 | #ifndef INCLUDED_OMNI_TIME_H
|
| 22 | #define INCLUDED_OMNI_TIME_H
|
| 23 | |
| 24 | struct omni_time {
|
| 25 | long int d_secs; // seconds. |
| 26 | long int d_nsecs; // nanoseconds. Always in [0, 1e9-1] |
| 27 | |
| 28 | omni_time() : d_secs(0), d_nsecs(0) {} |
| 29 | omni_time(long secs, long nanosecs=0) : d_secs(secs), d_nsecs(nanosecs) {} |
| 30 | |
| 31 | // N.B., this only makes sense for differences between times.
|
| 32 | // Double doesn't have enough bits to precisely represent an absolute time.
|
| 33 | omni_time(double secs);
|
| 34 | |
| 35 | // N.B. This only makes sense for differences between times.
|
| 36 | // Double doesn't have enough bits to precisely represent an absolute time.
|
| 37 | double double_time() const { return (double)d_secs + d_nsecs * 1e-9; } |
| 38 | |
| 39 | /*!
|
| 40 | * \brief Return an absolute time suitable for use with |
| 41 | * schedule_one_shot_timeout & schedule_periodic_timeout |
| 42 | * |
| 43 | * The return value is the current time plus the given relative offset. |
| 44 | */ |
| 45 | static omni_time time(const omni_time &relative_offset = omni_time()); |
| 46 | }; |
| 47 | |
| 48 | |
| 49 | inline static bool |
| 50 | operator<(const omni_time &x, const omni_time &y) |
| 51 | {
|
| 52 | return ((x.d_secs < y.d_secs)
|
| 53 | || (x.d_secs == y.d_secs && x.d_nsecs < y.d_nsecs)); |
| 54 | } |
| 55 | |
| 56 | inline static bool |
| 57 | operator>(const omni_time &x, const omni_time &y) |
| 58 | {
|
| 59 | return ((x.d_secs > y.d_secs)
|
| 60 | || (x.d_secs == y.d_secs && x.d_nsecs > y.d_nsecs)); |
| 61 | } |
| 62 | |
| 63 | inline static bool |
| 64 | operator>=(const omni_time &x, const omni_time &y) |
| 65 | {
|
| 66 | return ((x.d_secs > y.d_secs)
|
| 67 | || (x.d_secs == y.d_secs && x.d_nsecs >= y.d_nsecs)); |
| 68 | } |
| 69 | |
| 70 | inline static bool |
| 71 | operator<=(const omni_time &x, const omni_time &y) |
| 72 | {
|
| 73 | return ((x.d_secs < y.d_secs)
|
| 74 | || (x.d_secs == y.d_secs && x.d_nsecs <= y.d_nsecs)); |
| 75 | } |
| 76 | |
| 77 | inline static bool |
| 78 | operator==(const omni_time &x, const omni_time &y) |
| 79 | {
|
| 80 | return (x.d_secs == y.d_secs && x.d_nsecs == y.d_nsecs);
|
| 81 | } |
| 82 | |
| 83 | |
| 84 | omni_time operator+(const omni_time &x, const omni_time &y); |
| 85 | omni_time operator+(const omni_time &x, double y); |
| 86 | omni_time operator-(const omni_time &x, const omni_time &y); |
| 87 | omni_time operator-(const omni_time &x, double y); |
| 88 | |
| 89 | #endif /* INCLUDED_OMNI_TIME_H */ |