blob: 2651b58d5a7472bf8f7a9e659ea7e347b3b325c7 (
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
//
// MessagePack for C++ simple buffer implementation
//
// Copyright (C) 2008-2009 FURUHASHI Sadayuki
//
// Licensed 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.
//
#ifndef MSGPACK_SBUFFER_HPP__
#define MSGPACK_SBUFFER_HPP__
#include "msgpack/sbuffer.h"
#include <stdexcept>
namespace msgpack {
class sbuffer : public msgpack_sbuffer {
public:
sbuffer(size_t initsz = MSGPACK_SBUFFER_INIT_SIZE)
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
sbuf->data = (char*)::malloc(initsz);
if(!sbuf->data) {
throw std::bad_alloc();
}
sbuf->size = 0;
sbuf->alloc = initsz;
}
~sbuffer()
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
::free(sbuf->data);
}
public:
void write(const char* buf, unsigned int len)
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
if(sbuf->alloc - sbuf->size < len) {
expand_buffer(len);
}
memcpy(sbuf->data + sbuf->size, buf, len);
sbuf->size += len;
}
char* data()
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
return sbuf->data;
}
const char* data() const
{
const msgpack_sbuffer* sbuf = static_cast<const msgpack_sbuffer*>(this);
return sbuf->data;
}
size_t size() const
{
const msgpack_sbuffer* sbuf = static_cast<const msgpack_sbuffer*>(this);
return sbuf->size;
}
char* release()
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
return msgpack_sbuffer_release(sbuf);
}
private:
void expand_buffer(size_t len)
{
msgpack_sbuffer* sbuf = static_cast<msgpack_sbuffer*>(this);
size_t nsize = (sbuf->alloc) ?
sbuf->alloc * 2 : MSGPACK_SBUFFER_INIT_SIZE;
while(nsize < sbuf->size + len) { nsize *= 2; }
void* tmp = realloc(sbuf->data, nsize);
if(!tmp) {
throw std::bad_alloc();
}
sbuf->data = (char*)tmp;
sbuf->alloc = nsize;
}
private:
sbuffer(const sbuffer&);
};
} // namespace msgpack
#endif /* msgpack/sbuffer.hpp */
|
