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/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2015 Mirantis, Inc.
*
* Author: Alyona Kiseleva <akiselyova@mirantis.com>
*
* 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.
*
*/
#ifndef CEPH_COMPRESSION_PLUGIN_ZLIB_H
#define CEPH_COMPRESSION_PLUGIN_ZLIB_H
// -----------------------------------------------------------------------------
#include "arch/probe.h"
#include "arch/intel.h"
#include "arch/arm.h"
#include "common/ceph_context.h"
#include "compressor/CompressionPlugin.h"
#include "ZlibCompressor.h"
// -----------------------------------------------------------------------------
class CompressionPluginZlib : public ceph::CompressionPlugin {
public:
bool has_isal = false;
explicit CompressionPluginZlib(CephContext *cct) : CompressionPlugin(cct)
{}
int factory(CompressorRef *cs,
std::ostream *ss) override
{
bool isal = false;
#if defined(__i386__) || defined(__x86_64__)
// other arches or lack of support result in isal = false
if (cct->_conf->compressor_zlib_isal) {
ceph_arch_probe();
isal = (ceph_arch_intel_pclmul && ceph_arch_intel_sse41);
}
#elif defined(__aarch64__)
if (cct->_conf->compressor_zlib_isal) {
ceph_arch_probe();
isal = (ceph_arch_aarch64_pmull && ceph_arch_neon);
}
#endif
if (compressor == 0 || has_isal != isal) {
compressor = std::make_shared<ZlibCompressor>(cct, isal);
has_isal = isal;
}
*cs = compressor;
return 0;
}
};
#endif
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