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// **********************************************************************
//
// Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#ifndef ICE_BUFFER_H
#define ICE_BUFFER_H
#include <Ice/Config.h>
//#define ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
namespace IceInternal
{
class ICE_API Buffer : private IceUtil::noncopyable
{
public:
Buffer() : i(b.begin()) { }
virtual ~Buffer() { }
void swap(Buffer&);
class ICE_API Container : private IceUtil::noncopyable
{
public:
//
// Standard vector-like operations.
//
typedef Ice::Byte value_type;
typedef Ice::Byte* iterator;
typedef const Ice::Byte* const_iterator;
typedef Ice::Byte& reference;
typedef const Ice::Byte& const_reference;
typedef Ice::Byte* pointer;
typedef int difference_type;
typedef size_t size_type;
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
Container() :
_buf(_fixed),
_size(0),
_capacity(_fixedSize)
{
}
#else
Container() :
_buf(0),
_size(0),
_capacity(0)
{
}
#endif
~Container()
{
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
if(_buf != _fixed)
{
free(_buf);
}
#else
free(_buf);
#endif
}
iterator begin()
{
return _buf;
}
const_iterator begin() const
{
return _buf;
}
iterator end()
{
return _buf + _size;
}
const_iterator end() const
{
return _buf + _size;
}
size_type size() const
{
return _size;
}
bool empty() const
{
return !_size;
}
void swap(Container&);
void clear()
{
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
if(_buf != _fixed)
{
free(_buf);
_buf = _fixed;
}
_size = 0;
_capacity = _fixedSize;
#else
free(_buf);
_buf = 0;
_size = 0;
_capacity = 0;
#endif
}
void resize(size_type);
void push_back(value_type v)
{
resize(_size + 1);
_buf[_size - 1] = v;
}
reference operator[](size_type n)
{
assert(n < _size);
return _buf[n];
}
const_reference operator[](size_type n) const
{
assert(n < _size);
return _buf[n];
}
private:
Container(const Container&);
void operator=(const Container&);
pointer _buf;
size_type _size;
size_type _capacity;
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
//
// For small buffers, we stack-allocate the memory. Only when
// a buffer size larger than _fixedSize is requested, we
// allocate memory dynamically.
//
static const size_type _fixedSize = 64;
value_type _fixed[_fixedSize];
#endif
};
Container b;
Container::iterator i;
};
}
#endif
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