1 files changed, 25 insertions, 1 deletions
diff --git a/src/mongo/base/simple_string_data_comparator.cpp b/src/mongo/base/simple_string_data_comparator.cpp
index c03fddf4316..eaeb67ac829 100644
--- a/src/mongo/base/simple_string_data_comparator.cpp
+++ b/src/mongo/base/simple_string_data_comparator.cpp
@@ -31,10 +31,34 @@
 
 #include "mongo/base/simple_string_data_comparator.h"
 
-#include "mongo/util/murmur3.h"
+#include <third_party/murmurhash3/MurmurHash3.h>
+
+#include "mongo/base/data_type_endian.h"
+#include "mongo/base/data_view.h"
 
 namespace mongo {
 
+namespace {
+
+template <int SizeofSizeT>
+size_t murmur3(StringData str, size_t seed);
+
+template <>
+size_t murmur3<4>(StringData str, size_t seed) {
+    char hash[4];
+    MurmurHash3_x86_32(str.rawData(), str.size(), seed, &hash);
+    return ConstDataView(hash).read<LittleEndian<std::uint32_t>>();
+}
+
+template <>
+size_t murmur3<8>(StringData str, size_t seed) {
+    char hash[16];
+    MurmurHash3_x64_128(str.rawData(), str.size(), seed, hash);
+    return static_cast<size_t>(ConstDataView(hash).read<LittleEndian<std::uint64_t>>());
+}
+
+}  // namespace
+
 const SimpleStringDataComparator SimpleStringDataComparator::kInstance{};
 
 int SimpleStringDataComparator::compare(StringData left, StringData right) const {