blob: 3530e0b2239977d1642459323b4a9a59f23cc8ff (
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
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
|
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "data_src.h"
#include <cstddef>
#include <iomanip>
#include <sstream>
namespace mrg
{
namespace jtt
{
char data_src::_data_src[data_src::max_dsize];
char data_src::_xid_src[data_src::max_xsize];
bool data_src::_initialized = data_src::__init();
u_int64_t data_src::_xid_cnt = 0ULL;
mrg::journal::smutex data_src::_sm;
data_src::data_src()
{}
bool
data_src::__init()
{
for (unsigned i=0; i<max_dsize; i++)
_data_src[i] = '0' + ((i + 1) % 10); // 123456789012345...
for (unsigned j=0; j<max_xsize; j++)
_xid_src[j] = 'a' + (j % 26); // abc...xyzabc...
return true;
}
const char*
data_src::get_data(const std::size_t offs)
{
if (offs >= max_dsize) return 0;
return _data_src + offs;
}
std::string
data_src::get_xid(const std::size_t xid_size)
{
if (xid_size == 0)
return "";
std::ostringstream oss;
oss << std::setfill('0');
if (xid_size < 9)
oss << std::setw(xid_size) << get_xid_cnt();
else if (xid_size < 13)
oss << "xid:" << std::setw(xid_size - 4) << get_xid_cnt();
else
{
oss << "xid:" << std::setw(8) << get_xid_cnt() << ":";
oss.write(get_xid_content(13), xid_size - 13);
}
return oss.str();
}
const char*
data_src::get_xid_content(const std::size_t offs)
{
if (offs >= max_xsize) return 0;
return _xid_src + offs;
}
} // namespace jtt
} // namespace mrg
|
