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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2018 Intel Corporation
*
* Author: Qiaowei Ren <qiaowei.ren@intel.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#ifndef CEPH_QATACCEL_H
#define CEPH_QATACCEL_H
#include <condition_variable>
#include <memory>
#include <mutex>
#include <optional>
#include <vector>
#include "include/buffer.h"
extern "C" struct QzSession_S; // typedef struct QzSession_S QzSession_T;
struct QzSessionDeleter {
void operator() (struct QzSession_S *session);
};
class QatAccel {
public:
using session_ptr = std::unique_ptr<struct QzSession_S, QzSessionDeleter>;
QatAccel();
~QatAccel();
bool init(const std::string &alg);
int compress(const bufferlist &in, bufferlist &out, std::optional<int32_t> &compressor_message);
int decompress(const bufferlist &in, bufferlist &out, std::optional<int32_t> compressor_message);
int decompress(bufferlist::const_iterator &p, size_t compressed_len, bufferlist &dst, std::optional<int32_t> compressor_message);
private:
// get a session from the pool or create a new one. returns null if session init fails
session_ptr get_session();
friend struct cached_session_t;
std::vector<session_ptr> sessions;
std::mutex mutex;
std::string alg_name;
};
#endif
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