a143ef9b38
Summary: Change namespace from leveldb to rocksdb. This allows a single application to link in open-source leveldb code as well as rocksdb code into the same process. Test Plan: compile rocksdb Reviewers: emayanke Reviewed By: emayanke CC: leveldb Differential Revision: https://reviews.facebook.net/D13287
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
#ifndef LEVELDB_UTIL_STL_WRAPPERS_H_
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#define LEVELDB_UTIL_STL_WRAPPERS_H_
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#include "util/murmurhash.h"
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#include "util/coding.h"
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#include "rocksdb/memtablerep.h"
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#include "rocksdb/slice.h"
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namespace rocksdb {
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namespace stl_wrappers {
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class Base {
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protected:
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const MemTableRep::KeyComparator& compare_;
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explicit Base(const MemTableRep::KeyComparator& compare)
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: compare_(compare) { }
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};
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struct Compare : private Base {
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explicit Compare(const MemTableRep::KeyComparator& compare)
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: Base(compare) { }
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inline bool operator()(const char* a, const char* b) const {
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return compare_(a, b) < 0;
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}
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};
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struct Hash {
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inline size_t operator()(const char* buf) const {
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Slice internal_key = GetLengthPrefixedSlice(buf);
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Slice value =
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GetLengthPrefixedSlice(internal_key.data() + internal_key.size());
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unsigned int hval = MurmurHash(internal_key.data(), internal_key.size(),
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0);
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hval = MurmurHash(value.data(), value.size(), hval);
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return hval;
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}
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};
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struct KeyEqual : private Base {
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explicit KeyEqual(const MemTableRep::KeyComparator& compare)
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: Base(compare) { }
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inline bool operator()(const char* a, const char* b) const {
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return this->compare_(a, b) == 0;
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}
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};
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}
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}
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#endif // LEVELDB_UTIL_STL_WRAPPERS_H_
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