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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph distributed storage system
*
* Copyright (C) 2014 Cloudwatt <libre.licensing@cloudwatt.com>
* Copyright (C) 2014 Red Hat <contact@redhat.com>
*
* Author: Loic Dachary <loic@dachary.org>
*
* 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.
*
*/
#include "common/debug.h"
#include "arch/probe.h"
#include "arch/intel.h"
#include "erasure-code/ErasureCodePlugin.h"
#define dout_subsys ceph_subsys_osd
#undef dout_prefix
#define dout_prefix _prefix(_dout)
static ostream& _prefix(std::ostream* _dout)
{
return *_dout << "ErasureCodePluginSelectJerasure: ";
}
static string get_variant() {
ceph_arch_probe();
if (ceph_arch_intel_pclmul &&
ceph_arch_intel_sse42 &&
ceph_arch_intel_sse41 &&
ceph_arch_intel_ssse3 &&
ceph_arch_intel_sse3 &&
ceph_arch_intel_sse2) {
return "sse4";
} else if (ceph_arch_intel_ssse3 &&
ceph_arch_intel_sse3 &&
ceph_arch_intel_sse2) {
return "sse3";
} else {
return "generic";
}
}
class ErasureCodePluginSelectJerasure : public ErasureCodePlugin {
public:
virtual int factory(const map<string,string> ¶meters,
ErasureCodeInterfaceRef *erasure_code) {
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
stringstream ss;
int ret;
string name = "jerasure";
if (parameters.count("jerasure-name"))
name = parameters.find("jerasure-name")->second;
if (parameters.count("jerasure-variant")) {
dout(10) << "jerasure-variant "
<< parameters.find("jerasure-variant")->second << dendl;
ret = instance.factory(name + "_" + parameters.find("jerasure-variant")->second,
parameters, erasure_code, ss);
} else {
string variant = get_variant();
dout(10) << variant << " plugin" << dendl;
ret = instance.factory(name + "_" + variant, parameters, erasure_code, ss);
}
if (ret)
derr << ss.str() << dendl;
return ret;
}
};
int __erasure_code_init(char *plugin_name, char *directory)
{
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
string variant = get_variant();
ErasureCodePlugin *plugin;
stringstream ss;
int r = instance.load(plugin_name + string("_") + variant,
directory, &plugin, ss);
if (r) {
derr << ss.str() << dendl;
return r;
}
dout(10) << ss.str() << dendl;
return instance.add(plugin_name, new ErasureCodePluginSelectJerasure());
}
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