/usr/include/ola/io/IOStack.h is in libola-dev 0.10.5.nojsmin-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | /*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* IOStack.h
* A non-contigous memory buffer that operates as a stack (LIFO).
* Copyright (C) 2013 Simon Newton
*/
#ifndef INCLUDE_OLA_IO_IOSTACK_H_
#define INCLUDE_OLA_IO_IOSTACK_H_
#include <ola/io/IOVecInterface.h>
#include <ola/io/InputBuffer.h>
#include <ola/io/OutputBuffer.h>
#include <stdint.h>
#include <deque>
#include <iostream>
#include <queue>
#include <string>
namespace ola {
namespace io {
/**
* IOStack.
*/
class IOStack: public IOVecInterface,
public InputBufferInterface,
public OutputBufferInterface {
public:
IOStack();
explicit IOStack(class MemoryBlockPool *block_pool);
~IOStack();
unsigned int Size() const;
bool Empty() const {
// guard against the case of Empty blocks.
return m_blocks.empty() || Size() == 0;
}
// From OutputBufferInterface
void Write(const uint8_t *data, unsigned int length);
// From InputBufferInterface, these reads consume data from the buffer.
unsigned int Read(uint8_t *data, unsigned int length);
unsigned int Read(std::string *output, unsigned int length);
// From IOVecInterface
const struct IOVec *AsIOVec(int *io_count) const;
void Pop(unsigned int n);
// 0-copy append to an IOQueue
void MoveToIOQueue(class IOQueue *queue);
// purge the underlying memory pool
void Purge();
void Dump(std::ostream *output);
private:
typedef std::deque<class MemoryBlock*> BlockVector;
class MemoryBlockPool* m_pool;
bool m_delete_pool;
BlockVector m_blocks;
void PrependBlock();
// no copying / assignment for now
IOStack(const IOStack&);
IOStack& operator=(const IOStack&);
};
} // namespace io
} // namespace ola
#endif // INCLUDE_OLA_IO_IOSTACK_H_
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