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// **********************************************************************
//
// Copyright (c) 2003-2007 ZeroC, Inc. All rights reserved.
//
// This copy of Ice-E is licensed to you under the terms described in the
// ICEE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <IceE/Buffer.h>
#include <IceE/LocalException.h>
using namespace std;
using namespace Ice;
using namespace IceInternal;
void
IceInternal::Buffer::swap(Buffer& other)
{
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
Container::difference_type pos = i - b.begin();
Container::difference_type otherPos = other.i - other.b.begin();
b.swap(other.b);
i = b.begin() + otherPos;
other.i = other.b.begin() + pos;
#else
b.swap(other.b);
std::swap(i, other.i);
#endif
}
void
IceInternal::Buffer::Container::swap(Container& other)
{
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
if(_buf == _fixed)
{
if(other._buf == other._fixed)
{
value_type tmp[ICE_BUFFER_FIXED_SIZE];
memcpy(tmp, _fixed, _size);
memcpy(_fixed, other._fixed, other._size);
memcpy(other._fixed, tmp, _size);
}
else
{
_buf = other._buf;
memcpy(other._fixed, _fixed, _size);
other._buf = other._fixed;
}
}
else
{
if(other._buf == other._fixed)
{
other._buf = _buf;
memcpy(_fixed, other._fixed, other._size);
_buf = _fixed;
}
else
{
std::swap(_buf, other._buf);
}
}
#else
std::swap(_buf, other._buf);
#endif
std::swap(_size, other._size);
std::swap(_capacity, other._capacity);
std::swap(_shrinkCounter, other._shrinkCounter);
}
void
IceInternal::Buffer::Container::clear()
{
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
if(_buf != _fixed)
{
free(_buf);
_buf = _fixed;
}
_size = 0;
_capacity = ICE_BUFFER_FIXED_SIZE;
#else
free(_buf);
_buf = 0;
_size = 0;
_capacity = 0;
#endif
}
void
IceInternal::Buffer::Container::reserve(size_type n)
{
if(n > _capacity)
{
_capacity = std::max<size_type>(n, std::min(2 * _capacity, _maxCapacity));
_capacity = std::max<size_type>(static_cast<size_type>(240), _capacity);
}
else if(n < _capacity)
{
_capacity = n;
}
else
{
return;
}
#ifdef ICE_SMALL_MESSAGE_BUFFER_OPTIMIZATION
if(_buf != _fixed)
{
_buf = reinterpret_cast<pointer>(realloc(_buf, _capacity));
}
else if(_capacity > ICE_BUFFER_FIXED_SIZE)
{
_buf = reinterpret_cast<pointer>(malloc(_capacity));
memcpy(_buf, _fixed, _size);
}
#else
if(_buf)
{
_buf = reinterpret_cast<pointer>(realloc(_buf, _capacity));
}
else
{
_buf = reinterpret_cast<pointer>(malloc(_capacity));
}
#endif
if(!_buf)
{
SyscallException ex(__FILE__, __LINE__);
ex.error = getSystemErrno();
throw ex;
}
}
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