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FastBuffer.cpp
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96 lines (81 loc) · 2.13 KB
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// Copyright 2016 Proyectos y Sistemas de Mantenimiento SL (eProsima).
//
// 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.
#include <fastcdr/FastBuffer.h>
#if !__APPLE__ && !__FreeBSD__ && !__VXWORKS__
#include <malloc.h>
#else
#include <stdlib.h>
#endif // if !__APPLE__ && !__FreeBSD__ && !__VXWORKS__
#define BUFFER_START_LENGTH 200
using namespace eprosima::fastcdr;
FastBuffer::FastBuffer(
char* const buffer,
const size_t bufferSize)
: buffer_(buffer)
, size_(bufferSize)
, m_internalBuffer(false)
{
}
FastBuffer::~FastBuffer()
{
if (m_internalBuffer && buffer_ != nullptr)
{
free(buffer_);
}
}
bool FastBuffer::reserve(
size_t size)
{
if (m_internalBuffer && buffer_ == NULL)
{
buffer_ = reinterpret_cast<char*>(malloc(size));
if (buffer_)
{
size_ = size;
return true;
}
}
return false;
}
bool FastBuffer::resize(
size_t min_size_inc)
{
size_t incBufferSize = BUFFER_START_LENGTH;
if (m_internalBuffer)
{
if (min_size_inc > BUFFER_START_LENGTH)
{
incBufferSize = min_size_inc;
}
if (buffer_ == NULL)
{
size_ = incBufferSize;
buffer_ = reinterpret_cast<char*>(malloc(size_));
if (buffer_ != NULL)
{
return true;
}
}
else
{
size_ += incBufferSize;
buffer_ = reinterpret_cast<char*>(realloc(buffer_, size_));
if (buffer_ != NULL)
{
return true;
}
}
}
return false;
}