remove ceph code

[stor4nfv.git] / src / ceph / src / compressor / zstd / ZstdCompressor.h

diff --git a/src/ceph/src/compressor/zstd/ZstdCompressor.h b/src/ceph/src/compressor/zstd/ZstdCompressor.h
deleted file mode 100644 (file)
index fd465cd..0000000
--- a/src/ceph/src/compressor/zstd/ZstdCompressor.h
+++ /dev/null
@@ -1,99 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2015 Haomai Wang <haomaiwang@gmail.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_ZSTDCOMPRESSOR_H
-#define CEPH_ZSTDCOMPRESSOR_H
-
-#include "zstd/lib/zstd.h"
-#include "include/buffer.h"
-#include "include/encoding.h"
-#include "compressor/Compressor.h"
-
-#define COMPRESSION_LEVEL 5
-
-class ZstdCompressor : public Compressor {
- public:
-  ZstdCompressor() : Compressor(COMP_ALG_ZSTD, "zstd") {}
-
-  int compress(const bufferlist &src, bufferlist &dst) override {
-    bufferptr outptr = buffer::create_page_aligned(
-      ZSTD_compressBound(src.length()));
-    ZSTD_outBuffer_s outbuf;
-    outbuf.dst = outptr.c_str();
-    outbuf.size = outptr.length();
-    outbuf.pos = 0;
-
-    ZSTD_CStream *s = ZSTD_createCStream();
-    ZSTD_initCStream(s, COMPRESSION_LEVEL);
-    auto p = src.begin();
-    size_t left = src.length();
-    while (left) {
-      assert(!p.end());
-      struct ZSTD_inBuffer_s inbuf;
-      inbuf.pos = 0;
-      inbuf.size = p.get_ptr_and_advance(left, (const char**)&inbuf.src);
-      ZSTD_compressStream(s, &outbuf, &inbuf);
-      left -= inbuf.size;
-    }
-    assert(p.end());
-    ZSTD_flushStream(s, &outbuf);
-    ZSTD_endStream(s, &outbuf);
-    ZSTD_freeCStream(s);
-
-    // prefix with decompressed length
-    ::encode((uint32_t)src.length(), dst);
-    dst.append(outptr, 0, outbuf.pos);
-    return 0;
-  }
-
-  int decompress(const bufferlist &src, bufferlist &dst) override {
-    bufferlist::iterator i = const_cast<bufferlist&>(src).begin();
-    return decompress(i, src.length(), dst);
-  }
-
-  int decompress(bufferlist::iterator &p,
-                size_t compressed_len,
-                bufferlist &dst) override {
-    if (compressed_len < 4) {
-      return -1;
-    }
-    compressed_len -= 4;
-    uint32_t dst_len;
-    ::decode(dst_len, p);
-
-    bufferptr dstptr(dst_len);
-    ZSTD_outBuffer_s outbuf;
-    outbuf.dst = dstptr.c_str();
-    outbuf.size = dstptr.length();
-    outbuf.pos = 0;
-    ZSTD_DStream *s = ZSTD_createDStream();
-    ZSTD_initDStream(s);
-    while (compressed_len > 0) {
-      if (p.end()) {
-       return -1;
-      }
-      ZSTD_inBuffer_s inbuf;
-      inbuf.pos = 0;
-      inbuf.size = p.get_ptr_and_advance(compressed_len, (const char**)&inbuf.src);
-      ZSTD_decompressStream(s, &outbuf, &inbuf);
-      compressed_len -= inbuf.size;
-    }
-    ZSTD_freeDStream(s);
-
-    dst.append(dstptr, 0, outbuf.pos);
-    return 0;
-  }
-};
-
-#endif