1 files changed, 0 insertions, 145 deletions
diff --git a/src/leveldb/db/memtable.cc b/src/leveldb/db/memtable.cc
deleted file mode 100644
index bfec0a7e7a..0000000000
--- a/src/leveldb/db/memtable.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file. See the AUTHORS file for names of contributors.
-
-#include "db/memtable.h"
-#include "db/dbformat.h"
-#include "leveldb/comparator.h"
-#include "leveldb/env.h"
-#include "leveldb/iterator.h"
-#include "util/coding.h"
-
-namespace leveldb {
-
-static Slice GetLengthPrefixedSlice(const char* data) {
-  uint32_t len;
-  const char* p = data;
-  p = GetVarint32Ptr(p, p + 5, &len);  // +5: we assume "p" is not corrupted
-  return Slice(p, len);
-}
-
-MemTable::MemTable(const InternalKeyComparator& cmp)
-    : comparator_(cmp),
-      refs_(0),
-      table_(comparator_, &arena_) {
-}
-
-MemTable::~MemTable() {
-  assert(refs_ == 0);
-}
-
-size_t MemTable::ApproximateMemoryUsage() { return arena_.MemoryUsage(); }
-
-int MemTable::KeyComparator::operator()(const char* aptr, const char* bptr)
-    const {
-  // Internal keys are encoded as length-prefixed strings.
-  Slice a = GetLengthPrefixedSlice(aptr);
-  Slice b = GetLengthPrefixedSlice(bptr);
-  return comparator.Compare(a, b);
-}
-
-// Encode a suitable internal key target for "target" and return it.
-// Uses *scratch as scratch space, and the returned pointer will point
-// into this scratch space.
-static const char* EncodeKey(std::string* scratch, const Slice& target) {
-  scratch->clear();
-  PutVarint32(scratch, target.size());
-  scratch->append(target.data(), target.size());
-  return scratch->data();
-}
-
-class MemTableIterator: public Iterator {
- public:
-  explicit MemTableIterator(MemTable::Table* table) : iter_(table) { }
-
-  virtual bool Valid() const { return iter_.Valid(); }
-  virtual void Seek(const Slice& k) { iter_.Seek(EncodeKey(&tmp_, k)); }
-  virtual void SeekToFirst() { iter_.SeekToFirst(); }
-  virtual void SeekToLast() { iter_.SeekToLast(); }
-  virtual void Next() { iter_.Next(); }
-  virtual void Prev() { iter_.Prev(); }
-  virtual Slice key() const { return GetLengthPrefixedSlice(iter_.key()); }
-  virtual Slice value() const {
-    Slice key_slice = GetLengthPrefixedSlice(iter_.key());
-    return GetLengthPrefixedSlice(key_slice.data() + key_slice.size());
-  }
-
-  virtual Status status() const { return Status::OK(); }
-
- private:
-  MemTable::Table::Iterator iter_;
-  std::string tmp_;       // For passing to EncodeKey
-
-  // No copying allowed
-  MemTableIterator(const MemTableIterator&);
-  void operator=(const MemTableIterator&);
-};
-
-Iterator* MemTable::NewIterator() {
-  return new MemTableIterator(&table_);
-}
-
-void MemTable::Add(SequenceNumber s, ValueType type,
-                   const Slice& key,
-                   const Slice& value) {
-  // Format of an entry is concatenation of:
-  //  key_size     : varint32 of internal_key.size()
-  //  key bytes    : char[internal_key.size()]
-  //  value_size   : varint32 of value.size()
-  //  value bytes  : char[value.size()]
-  size_t key_size = key.size();
-  size_t val_size = value.size();
-  size_t internal_key_size = key_size + 8;
-  const size_t encoded_len =
-      VarintLength(internal_key_size) + internal_key_size +
-      VarintLength(val_size) + val_size;
-  char* buf = arena_.Allocate(encoded_len);
-  char* p = EncodeVarint32(buf, internal_key_size);
-  memcpy(p, key.data(), key_size);
-  p += key_size;
-  EncodeFixed64(p, (s << 8) | type);
-  p += 8;
-  p = EncodeVarint32(p, val_size);
-  memcpy(p, value.data(), val_size);
-  assert((p + val_size) - buf == encoded_len);
-  table_.Insert(buf);
-}
-
-bool MemTable::Get(const LookupKey& key, std::string* value, Status* s) {
-  Slice memkey = key.memtable_key();
-  Table::Iterator iter(&table_);
-  iter.Seek(memkey.data());
-  if (iter.Valid()) {
-    // entry format is:
-    //    klength  varint32
-    //    userkey  char[klength]
-    //    tag      uint64
-    //    vlength  varint32
-    //    value    char[vlength]
-    // Check that it belongs to same user key.  We do not check the
-    // sequence number since the Seek() call above should have skipped
-    // all entries with overly large sequence numbers.
-    const char* entry = iter.key();
-    uint32_t key_length;
-    const char* key_ptr = GetVarint32Ptr(entry, entry+5, &key_length);
-    if (comparator_.comparator.user_comparator()->Compare(
-            Slice(key_ptr, key_length - 8),
-            key.user_key()) == 0) {
-      // Correct user key
-      const uint64_t tag = DecodeFixed64(key_ptr + key_length - 8);
-      switch (static_cast<ValueType>(tag & 0xff)) {
-        case kTypeValue: {
-          Slice v = GetLengthPrefixedSlice(key_ptr + key_length);
-          value->assign(v.data(), v.size());
-          return true;
-        }
-        case kTypeDeletion:
-          *s = Status::NotFound(Slice());
-          return true;
-      }
-    }
-  }
-  return false;
-}
-
-}  // namespace leveldb