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/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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 _FIXED_BUFFER_H
#define _FIXED_BUFFER_H
class FixedBuffer {
public:
FixedBuffer(size_t initialSize = 0) {
m_buffer = NULL;
m_bufferLen = 0;
alloc(m_bufferLen);
}
~FixedBuffer() {
delete [] m_buffer;
m_bufferLen = 0;
}
void * alloc(size_t size) {
if (m_bufferLen >= size)
return (void *)(m_buffer);
if (m_buffer != NULL)
delete[] m_buffer;
m_bufferLen = size;
m_buffer = new unsigned char[m_bufferLen];
if (m_buffer == NULL)
m_bufferLen = 0;
return m_buffer;
}
void *ptr() { return m_buffer; }
size_t len() { return m_bufferLen; }
private:
unsigned char *m_buffer;
size_t m_bufferLen;
};
#endif
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