/usr/include/opendht/utils.h is in libopendht-dev 1.2.1~dfsg1-8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 | /*
* Copyright (C) 2014-2016 Savoir-faire Linux Inc.
* Author : Adrien Béraud <adrien.beraud@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#define WANT4 1
#define WANT6 2
#include <msgpack.hpp>
#include <chrono>
#include <random>
#include <functional>
#include <map>
#include <cstdarg>
namespace dht {
using NetId = uint32_t;
using want_t = int_fast8_t;
template <typename Key, typename Item, typename Condition>
void erase_if(std::map<Key, Item>& map, const Condition& condition)
{
for (auto it = map.begin(); it != map.end(); ) {
if (condition(*it)) {
it = map.erase(it);
} else { ++it; }
}
}
class DhtException : public std::runtime_error {
public:
DhtException(const std::string &str = "") :
std::runtime_error("DhtException occurred: " + str) {}
};
// Time related definitions and utility functions
using clock = std::chrono::steady_clock;
using time_point = clock::time_point;
using duration = clock::duration;
time_point from_time_t(std::time_t t);
std::time_t to_time_t(time_point t);
/**
* Converts std::chrono::duration to floating-point seconds.
*/
template <class DT>
static double
print_dt(DT d) {
return std::chrono::duration_cast<std::chrono::duration<double>>(d).count();
}
static /*constexpr*/ const time_point TIME_INVALID = {time_point::min()};
static /*constexpr*/ const time_point TIME_MAX {time_point::max()};
template <typename Duration = duration>
class uniform_duration_distribution : public std::uniform_int_distribution<typename Duration::rep> {
using Base = std::uniform_int_distribution<typename Duration::rep>;
using param_type = typename Base::param_type;
public:
uniform_duration_distribution(Duration min, Duration max) : Base(min.count(), max.count()) {}
template <class Generator>
Duration operator()(Generator && g) {
return Duration(Base::operator()(g));
}
template< class Generator >
Duration operator()( Generator && g, const param_type& params ) {
return Duration(Base::operator()(g, params));
}
};
// Serialization related definitions and utility functions
using Blob = std::vector<uint8_t>;
/**
* Provides backward compatibility with msgpack 1.0
*/
Blob unpackBlob(msgpack::object& o);
template <typename Type>
Blob
packMsg(const Type& t) {
msgpack::sbuffer buffer;
msgpack::packer<msgpack::sbuffer> pk(&buffer);
pk.pack(t);
return {buffer.data(), buffer.data()+buffer.size()};
}
template <typename Type>
Type
unpackMsg(Blob b) {
msgpack::unpacked msg_res = msgpack::unpack((const char*)b.data(), b.size());
return msg_res.get().as<Type>();
}
msgpack::unpacked unpackMsg(Blob b);
msgpack::object* findMapValue(msgpack::object& map, const std::string& key);
} // namespace dht
|