remove ceph code

[stor4nfv.git] / src / ceph / src / common / SloppyCRCMap.cc

diff --git a/src/ceph/src/common/SloppyCRCMap.cc b/src/ceph/src/common/SloppyCRCMap.cc
deleted file mode 100644 (file)
index c637f7a..0000000
--- a/src/ceph/src/common/SloppyCRCMap.cc
+++ /dev/null
@@ -1,181 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
-// vim: ts=8 sw=2 smarttab
-
-#include "common/SloppyCRCMap.h"
-
-using namespace std;
-
-void SloppyCRCMap::write(uint64_t offset, uint64_t len, const bufferlist& bl,
-                        std::ostream *out)
-{
-  int64_t left = len;
-  uint64_t pos = offset;
-  unsigned o = offset % block_size;
-  if (o) {
-    crc_map.erase(offset - o);
-    if (out)
-      *out << "write invalidate " << (offset - o) << "\n";
-    pos += (block_size - o);
-    left -= (block_size - o);
-  }
-  while (left >= block_size) {
-    bufferlist t;
-    t.substr_of(bl, pos - offset, block_size);
-    crc_map[pos] = t.crc32c(crc_iv);
-    if (out)
-      *out << "write set " << pos << " " << crc_map[pos] << "\n";
-    pos += block_size;
-    left -= block_size;
-  }
-  if (left > 0) {
-    crc_map.erase(pos);
-    if (out)
-      *out << "write invalidate " << pos << "\n";
-  }
-}
-
-int SloppyCRCMap::read(uint64_t offset, uint64_t len, const bufferlist& bl,
-                      std::ostream *err)
-{
-  int errors = 0;
-  int64_t left = len;
-  uint64_t pos = offset;
-  unsigned o = offset % block_size;
-  if (o) {
-    pos += (block_size - o);
-    left -= (block_size - o);
-  }
-  while (left >= block_size) {
-    // FIXME: this could be more efficient if we avoid doing a find()
-    // on each iteration
-    std::map<uint64_t,uint32_t>::iterator p = crc_map.find(pos);
-    if (p != crc_map.end()) {
-      bufferlist t;
-      t.substr_of(bl, pos - offset, block_size);
-      uint32_t crc = t.crc32c(crc_iv);
-      if (p->second != crc) {
-       errors++;
-       if (err)
-         *err << "offset " << pos << " len " << block_size
-              << " has crc " << crc << " expected " << p->second << "\n";
-      }
-    }
-    pos += block_size;
-    left -= block_size;
-  }
-  return errors;  
-}
-
-void SloppyCRCMap::truncate(uint64_t offset)
-{
-  offset -= offset % block_size;
-  std::map<uint64_t,uint32_t>::iterator p = crc_map.lower_bound(offset);
-  while (p != crc_map.end())
-    crc_map.erase(p++);
-}
-
-void SloppyCRCMap::zero(uint64_t offset, uint64_t len)
-{
-  int64_t left = len;
-  uint64_t pos = offset;
-  unsigned o = offset % block_size;
-  if (o) {
-    crc_map.erase(offset - o);
-    pos += (block_size - o);
-    left -= (block_size - o);
-  }
-  while (left >= block_size) {
-    crc_map[pos] = zero_crc;
-    pos += block_size;
-    left -= block_size;
-  }
-  if (left > 0)
-    crc_map.erase(pos);
-}
-
-void SloppyCRCMap::clone_range(uint64_t offset, uint64_t len,
-                              uint64_t srcoff, const SloppyCRCMap& src,
-                              std::ostream *out)
-{
-  int64_t left = len;
-  uint64_t pos = offset;
-  uint64_t srcpos = srcoff;
-  unsigned o = offset % block_size;
-  if (o) {
-    crc_map.erase(offset - o);
-    pos += (block_size - o);
-    srcpos += (block_size - o);
-    left -= (block_size - o);
-    if (out)
-      *out << "clone_range invalidate " << (offset - o) << "\n";
-  }
-  while (left >= block_size) {
-    // FIXME: this could be more efficient.
-    if (block_size == src.block_size) {
-      map<uint64_t,uint32_t>::const_iterator p = src.crc_map.find(srcpos);
-      if (p != src.crc_map.end()) {
-       crc_map[pos] = p->second;
-       if (out)
-         *out << "clone_range copy " << pos << " " << p->second << "\n";
-      } else {
-       crc_map.erase(pos);
-       if (out)
-         *out << "clone_range invalidate " << pos << "\n";
-      }
-    } else {
-      crc_map.erase(pos);
-      if (out)
-       *out << "clone_range invalidate " << pos << "\n";
-    }
-    pos += block_size;
-    srcpos += block_size;
-    left -= block_size;
-  }
-  if (left > 0) {
-    crc_map.erase(pos);
-    if (out)
-      *out << "clone_range invalidate " << pos << "\n";
-  }
-}
-
-void SloppyCRCMap::encode(bufferlist& bl) const
-{
-  ENCODE_START(1, 1, bl);
-  ::encode(block_size, bl);
-  ::encode(crc_map, bl);
-  ENCODE_FINISH(bl);
-}
-
-void SloppyCRCMap::decode(bufferlist::iterator& bl)
-{
-  DECODE_START(1, bl);
-  uint32_t bs;
-  ::decode(bs, bl);
-  set_block_size(bs);
-  ::decode(crc_map, bl);
-  DECODE_FINISH(bl);
-}
-
-void SloppyCRCMap::dump(Formatter *f) const
-{
-  f->dump_unsigned("block_size", block_size);
-  f->open_array_section("crc_map");
-  for (map<uint64_t,uint32_t>::const_iterator p = crc_map.begin(); p != crc_map.end(); ++p) {
-    f->open_object_section("crc");
-    f->dump_unsigned("offset", p->first);
-    f->dump_unsigned("crc", p->second);
-    f->close_section();
-  }
-  f->close_section();
-}
-
-void SloppyCRCMap::generate_test_instances(list<SloppyCRCMap*>& ls)
-{
-  ls.push_back(new SloppyCRCMap);
-  ls.push_back(new SloppyCRCMap(2));
-  bufferlist bl;
-  bl.append("some data");
-  ls.back()->write(1, bl.length(), bl);
-  ls.back()->write(10, bl.length(), bl);
-  ls.back()->zero(4, 2);
-}