blob: f7a600b0eae71f0234cbe792b74f77e73458dfb1 (
plain)
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
|
#pragma once
#include <opendht/infohash.h>
#include <unordered_map>
namespace odhtdb
{
class Key
{
public:
Key() {}
Key(const char *key) : hashedKey(dht::InfoHash::get(key)) {}
dht::InfoHash hashedKey;
};
// Source: https://stackoverflow.com/a/11414104 (public license)
static unsigned int fnvHash(const unsigned char *key, int len)
{
unsigned int h = 2166136261;
for (int i = 0; i < len; i++)
h = (h * 16777619) ^ key[i];
return h;
}
struct KeyHash
{
size_t operator()(const Key &key) const
{
return fnvHash(key.hashedKey.data(), key.hashedKey.size());
}
};
struct KeyCompare
{
bool operator()(const Key &lhs, const Key &rhs) const
{
return lhs.hashedKey == rhs.hashedKey;
}
};
template <typename ValueType>
using KeyMap = std::unordered_map<Key, ValueType, KeyHash, KeyCompare>;
}
|