/src/msgpack-c/include/msgpack/v1/sbuffer.hpp

Source (jump to first uncovered line)
//
// MessagePack for C++ simple buffer implementation
//
// Copyright (C) 2008-2016 FURUHASHI Sadayuki and KONDO Takatoshi
//
//    Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//    http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef MSGPACK_V1_SBUFFER_HPP
#define MSGPACK_V1_SBUFFER_HPP

#include "msgpack/v1/cpp_config_decl.hpp"
#include "msgpack/v1/sbuffer_decl.hpp"
#include "msgpack/assert.hpp"

#include <stdexcept>
#include <cstring>

namespace msgpack {

/// @cond
MSGPACK_API_VERSION_NAMESPACE(v1) {
/// @endcond

class sbuffer {
public:
    sbuffer(size_t initsz = MSGPACK_SBUFFER_INIT_SIZE):m_size(0), m_alloc(initsz)
    {
        if(initsz == 0) {
            m_data = MSGPACK_NULLPTR;
        } else {
            m_data = (char*)::malloc(initsz);
            if(!m_data) {
                throw std::bad_alloc();
            }
        }
    }

    ~sbuffer()
    {
        ::free(m_data);
    }

#if !defined(MSGPACK_USE_CPP03)
    sbuffer(const sbuffer&) = delete;
    sbuffer& operator=(const sbuffer&) = delete;

    sbuffer(sbuffer&& other) :
        m_size(other.m_size), m_data(other.m_data), m_alloc(other.m_alloc)
    {
        other.m_size = other.m_alloc = 0;
        other.m_data = MSGPACK_NULLPTR;
    }

    sbuffer& operator=(sbuffer&& other)
    {
        ::free(m_data);

        m_size = other.m_size;
        m_alloc = other.m_alloc;
        m_data = other.m_data;

        other.m_size = other.m_alloc = 0;
        other.m_data = MSGPACK_NULLPTR;

        return *this;
    }
#endif // !defined(MSGPACK_USE_CPP03)

    void write(const char* buf, size_t len)
    {
        MSGPACK_ASSERT(buf || len == 0);

        if (!buf) return;

        if(m_alloc - m_size < len) {
            expand_buffer(len);
        }
        std::memcpy(m_data + m_size, buf, len);
        m_size += len;
    }

    char* data()
    {
        return m_data;
    }

    const char* data() const
    {
        return m_data;
    }

    size_t size() const
    {
        return m_size;
    }

    char* release()
    {
        char* tmp = m_data;
        m_size = 0;
        m_data = MSGPACK_NULLPTR;
        m_alloc = 0;
        return tmp;
    }

    void clear()
    {
        m_size = 0;
    }

private:
    void expand_buffer(size_t len)
    {
        size_t nsize = (m_alloc > 0) ?
                m_alloc * 2 : MSGPACK_SBUFFER_INIT_SIZE;

        while(nsize < m_size + len) {
            size_t tmp_nsize = nsize * 2;
            if (tmp_nsize <= nsize) {
                nsize = m_size + len;
                break;
            }
            nsize = tmp_nsize;
        }

        void* tmp = ::realloc(m_data, nsize);
        if(!tmp) {
            throw std::bad_alloc();
        }

        m_data = static_cast<char*>(tmp);
        m_alloc = nsize;
    }

#if defined(MSGPACK_USE_CPP03)
private:
    sbuffer(const sbuffer&);
    sbuffer& operator=(const sbuffer&);
#endif  // defined(MSGPACK_USE_CPP03)

private:
    size_t m_size;
    char* m_data;
    size_t m_alloc;
};

/// @cond
}  // MSGPACK_API_VERSION_NAMESPACE(v1)
/// @endcond

}  // namespace msgpack

#endif // MSGPACK_V1_SBUFFER_HPP

Line	Count	Source (jump to first uncovered line)
1		//
2		// MessagePack for C++ simple buffer implementation
3		//
4		// Copyright (C) 2008-2016 FURUHASHI Sadayuki and KONDO Takatoshi
5		//
6		// Distributed under the Boost Software License, Version 1.0.
7		// (See accompanying file LICENSE_1_0.txt or copy at
8		// http://www.boost.org/LICENSE_1_0.txt)
9		//
10		#ifndef MSGPACK_V1_SBUFFER_HPP
11		#define MSGPACK_V1_SBUFFER_HPP
12
13		#include "msgpack/v1/cpp_config_decl.hpp"
14		#include "msgpack/v1/sbuffer_decl.hpp"
15		#include "msgpack/assert.hpp"
16
17		#include <stdexcept>
18		#include <cstring>
19
20		namespace msgpack {
21
22		/// @cond
23		MSGPACK_API_VERSION_NAMESPACE(v1) {
24		/// @endcond
25
26		class sbuffer {
27		public:
28		sbuffer(size_t initsz = MSGPACK_SBUFFER_INIT_SIZE):m_size(0), m_alloc(initsz)
29	1.19k	{
30	1.19k	if(initsz == 0) {
31	0	m_data = MSGPACK_NULLPTR;
32	1.19k	} else {
33	1.19k	m_data = (char*)::malloc(initsz);
34	1.19k	if(!m_data) {
35	0	throw std::bad_alloc();
36	0	}
37	1.19k	}
38	1.19k	}
39
40		~sbuffer()
41	1.19k	{
42	1.19k	::free(m_data);
43	1.19k	}
44
45		#if !defined(MSGPACK_USE_CPP03)
46		sbuffer(const sbuffer&) = delete;
47		sbuffer& operator=(const sbuffer&) = delete;
48
49		sbuffer(sbuffer&& other) :
50		m_size(other.m_size), m_data(other.m_data), m_alloc(other.m_alloc)
51	0	{
52	0	other.m_size = other.m_alloc = 0;
53	0	other.m_data = MSGPACK_NULLPTR;
54	0	}
55
56		sbuffer& operator=(sbuffer&& other)
57	0	{
58	0	::free(m_data);
59	0
60	0	m_size = other.m_size;
61	0	m_alloc = other.m_alloc;
62	0	m_data = other.m_data;
63	0
64	0	other.m_size = other.m_alloc = 0;
65	0	other.m_data = MSGPACK_NULLPTR;
66	0
67	0	return *this;
68	0	}
69		#endif // !defined(MSGPACK_USE_CPP03)
70
71		void write(const char* buf, size_t len)
72	1.30M	{
73	1.30M	MSGPACK_ASSERT(buf \|\| len == 0);
74
75	1.30M	if (!buf) return;
76
77	1.30M	if(m_alloc - m_size < len) {
78	132	expand_buffer(len);
79	132	}
80	1.30M	std::memcpy(m_data + m_size, buf, len);
81	1.30M	m_size += len;
82	1.30M	}
83
84		char* data()
85	0	{
86	0	return m_data;
87	0	}
88
89		const char* data() const
90	0	{
91	0	return m_data;
92	0	}
93
94		size_t size() const
95	0	{
96	0	return m_size;
97	0	}
98
99		char* release()
100	0	{
101	0	char* tmp = m_data;
102	0	m_size = 0;
103	0	m_data = MSGPACK_NULLPTR;
104	0	m_alloc = 0;
105	0	return tmp;
106	0	}
107
108		void clear()
109	0	{
110	0	m_size = 0;
111	0	}
112
113		private:
114		void expand_buffer(size_t len)
115	132	{
116	132	size_t nsize = (m_alloc > 0) ?
117	132	m_alloc * 2 : MSGPACK_SBUFFER_INIT_SIZE;
118
119	132	while(nsize < m_size + len) {
120	0	size_t tmp_nsize = nsize * 2;
121	0	if (tmp_nsize <= nsize) {
122	0	nsize = m_size + len;
123	0	break;
124	0	}
125	0	nsize = tmp_nsize;
126	0	}
127
128	132	void* tmp = ::realloc(m_data, nsize);
129	132	if(!tmp) {
130	0	throw std::bad_alloc();
131	0	}
132
133	132	m_data = static_cast<char*>(tmp);
134	132	m_alloc = nsize;
135	132	}
136
137		#if defined(MSGPACK_USE_CPP03)
138		private:
139		sbuffer(const sbuffer&);
140		sbuffer& operator=(const sbuffer&);
141		#endif // defined(MSGPACK_USE_CPP03)
142
143		private:
144		size_t m_size;
145		char* m_data;
146		size_t m_alloc;
147		};
148
149		/// @cond
150		} // MSGPACK_API_VERSION_NAMESPACE(v1)
151		/// @endcond
152
153		} // namespace msgpack
154
155		#endif // MSGPACK_V1_SBUFFER_HPP

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Created: 2023-09-25 06:13