GNU Radio 3.2.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2007,2008 Free Software Foundation, Inc. 00004 * 00005 * This file is part of GNU Radio 00006 * 00007 * GNU Radio is free software; you can redistribute it and/or modify 00008 * it under the terms of the GNU General Public License as published by 00009 * the Free Software Foundation; either version 3, or (at your option) 00010 * any later version. 00011 * 00012 * GNU Radio is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU General Public License along 00018 * with this program; if not, write to the Free Software Foundation, Inc., 00019 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 00020 */ 00021 #ifndef INCLUDED_OMNI_TIME_H 00022 #define INCLUDED_OMNI_TIME_H 00023 00024 struct omni_time { 00025 long int d_secs; // seconds. 00026 long int d_nsecs; // nanoseconds. Always in [0, 1e9-1] 00027 00028 omni_time() : d_secs(0), d_nsecs(0) {} 00029 omni_time(long secs, long nanosecs=0) : d_secs(secs), d_nsecs(nanosecs) {} 00030 00031 // N.B., this only makes sense for differences between times. 00032 // Double doesn't have enough bits to precisely represent an absolute time. 00033 omni_time(double secs); 00034 00035 // N.B. This only makes sense for differences between times. 00036 // Double doesn't have enough bits to precisely represent an absolute time. 00037 double double_time() const { return (double)d_secs + d_nsecs * 1e-9; } 00038 00039 /*! 00040 * \brief Return an absolute time suitable for use with 00041 * schedule_one_shot_timeout & schedule_periodic_timeout 00042 * 00043 * The return value is the current time plus the given relative offset. 00044 */ 00045 static omni_time time(const omni_time &relative_offset = omni_time()); 00046 }; 00047 00048 00049 inline static bool 00050 operator<(const omni_time &x, const omni_time &y) 00051 { 00052 return ((x.d_secs < y.d_secs) 00053 || (x.d_secs == y.d_secs && x.d_nsecs < y.d_nsecs)); 00054 } 00055 00056 inline static bool 00057 operator>(const omni_time &x, const omni_time &y) 00058 { 00059 return ((x.d_secs > y.d_secs) 00060 || (x.d_secs == y.d_secs && x.d_nsecs > y.d_nsecs)); 00061 } 00062 00063 inline static bool 00064 operator>=(const omni_time &x, const omni_time &y) 00065 { 00066 return ((x.d_secs > y.d_secs) 00067 || (x.d_secs == y.d_secs && x.d_nsecs >= y.d_nsecs)); 00068 } 00069 00070 inline static bool 00071 operator<=(const omni_time &x, const omni_time &y) 00072 { 00073 return ((x.d_secs < y.d_secs) 00074 || (x.d_secs == y.d_secs && x.d_nsecs <= y.d_nsecs)); 00075 } 00076 00077 inline static bool 00078 operator==(const omni_time &x, const omni_time &y) 00079 { 00080 return (x.d_secs == y.d_secs && x.d_nsecs == y.d_nsecs); 00081 } 00082 00083 00084 omni_time operator+(const omni_time &x, const omni_time &y); 00085 omni_time operator+(const omni_time &x, double y); 00086 omni_time operator-(const omni_time &x, const omni_time &y); 00087 omni_time operator-(const omni_time &x, double y); 00088 00089 #endif /* INCLUDED_OMNI_TIME_H */