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1 | /* |
2 | * Ceph - scalable distributed file system | |
3 | * | |
4 | * Copyright (C) 2015 Mirantis, Inc. | |
5 | * | |
6 | * Author: Alyona Kiseleva <akiselyova@mirantis.com> | |
7 | * | |
8 | * This library is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License as published by the Free Software Foundation; either | |
11 | * version 2.1 of the License, or (at your option) any later version. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef CEPH_COMPRESSION_PLUGIN_ZLIB_H | |
16 | #define CEPH_COMPRESSION_PLUGIN_ZLIB_H | |
17 | ||
18 | // ----------------------------------------------------------------------------- | |
19 | #include "arch/probe.h" | |
20 | #include "arch/intel.h" | |
21 | #include "arch/arm.h" | |
22 | #include "common/config.h" | |
23 | #include "compressor/CompressionPlugin.h" | |
24 | #include "ZlibCompressor.h" | |
25 | ||
26 | // ----------------------------------------------------------------------------- | |
27 | ||
28 | class CompressionPluginZlib : public CompressionPlugin { | |
29 | public: | |
30 | bool has_isal = false; | |
31 | ||
32 | explicit CompressionPluginZlib(CephContext *cct) : CompressionPlugin(cct) | |
33 | {} | |
34 | ||
35 | int factory(CompressorRef *cs, | |
36 | std::ostream *ss) override | |
37 | { | |
38 | bool isal = false; | |
39 | #if defined(__i386__) || defined(__x86_64__) | |
40 | // other arches or lack of support result in isal = false | |
41 | if (cct->_conf->compressor_zlib_isal) { | |
42 | ceph_arch_probe(); | |
43 | isal = (ceph_arch_intel_pclmul && ceph_arch_intel_sse41); | |
44 | } | |
45 | #endif | |
46 | if (compressor == 0 || has_isal != isal) { | |
224ce89b | 47 | compressor = std::make_shared<ZlibCompressor>(cct, isal); |
7c673cae FG |
48 | has_isal = isal; |
49 | } | |
50 | *cs = compressor; | |
51 | return 0; | |
52 | } | |
53 | }; | |
54 | ||
55 | #endif |