Move folly/Checksum.h into folly/hash/

Summary: [Folly] Move `folly/Checksum.h` into `folly/hash/`.

Reviewed By: Orvid

Differential Revision: D6045825

fbshipit-source-id: 02d3e6a49e2c0fc115cfee09e1186be7a13525ba

folly/Makefile.am

@@ -46,7 +46,6 @@ nobase_follyinclude_HEADERS = \
 	Bits.h \
 	CachelinePadded.h \
 	CallOnce.h \
-	Checksum.h \
 	Chrono.h \
 	ClockGettimeWrappers.h \
 	ConcurrentSkipList.h \
@@ -66,7 +65,6 @@ nobase_follyinclude_HEADERS = \
 	detail/AtomicUnorderedMapUtils.h \
 	detail/AtomicUtils.h \
 	detail/BitIteratorDetail.h \
-	detail/ChecksumDetail.h \
 	detail/DiscriminatedPtrDetail.h \
 	detail/FileUtilDetail.h \
 	detail/FingerprintPolynomial.h \
@@ -226,6 +224,8 @@ nobase_follyinclude_HEADERS = \
 	futures/detail/FSM.h \
 	futures/detail/Types.h \
 	futures/test/TestExecutor.h \
+	hash/Checksum.h \
+	hash/detail/ChecksumDetail.h \
 	hash/SpookyHashV1.h \
 	hash/SpookyHashV2.h \
 	gen/Base.h \
@@ -467,9 +467,9 @@ GroupVarintTables.cpp: build/generate_varint_tables.py
 CLEANFILES += GroupVarintTables.cpp
 
 libfollybasesse42_la_SOURCES = \
-	detail/Crc32cDetail.cpp \
-	detail/ChecksumDetail.cpp \
-	detail/RangeSse42.cpp
+	detail/RangeSse42.cpp \
+	hash/detail/ChecksumDetail.cpp \
+	hash/detail/Crc32cDetail.cpp
 
 libfollybase_la_SOURCES = \
 	Conv.cpp \
@@ -486,7 +486,6 @@ libfollybase_la_SOURCES = \
 
 libfolly_la_SOURCES = \
 	Assume.cpp \
-	Checksum.cpp \
 	ClockGettimeWrappers.cpp \
 	concurrency/CacheLocality.cpp \
 	concurrency/GlobalThreadPoolList.cpp \
@@ -518,6 +517,7 @@ libfolly_la_SOURCES = \
 	experimental/hazptr/memory_resource.cpp \
 	GroupVarint.cpp \
 	GroupVarintTables.cpp \
+	hash/Checksum.cpp \
 	hash/SpookyHashV1.cpp \
 	hash/SpookyHashV2.cpp \
 	IPAddress.cpp \

folly/Checksum.cpp → folly/hash/Checksum.cpp

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-#include <folly/Checksum.h>
+#include <folly/hash/Checksum.h>
 #include <boost/crc.hpp>
 #include <folly/CpuId.h>
-#include <folly/detail/ChecksumDetail.h>
+#include <folly/hash/detail/ChecksumDetail.h>
 #include <algorithm>
 #include <stdexcept>
 

folly/detail/ChecksumDetail.cpp → folly/hash/detail/ChecksumDetail.cpp

@@ -110,7 +110,7 @@
  *    fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
  */
 
-#include <folly/detail/ChecksumDetail.h>
+#include <folly/hash/detail/ChecksumDetail.h>
 
 namespace folly {
 namespace detail {

folly/detail/Crc32cDetail.cpp → folly/hash/detail/Crc32cDetail.cpp

@@ -31,7 +31,7 @@
 
 #include <stdexcept>
 
-#include <folly/detail/ChecksumDetail.h>
+#include <folly/hash/detail/ChecksumDetail.h>
 
 #include <folly/CppAttributes.h>
 

folly/test/ChecksumTest.cpp → folly/hash/test/ChecksumTest.cpp

@@ -14,13 +14,13 @@
  * limitations under the License.
  */
 
-#include <folly/Checksum.h>
+#include <folly/hash/Checksum.h>
 
 #include <boost/crc.hpp>
 
 #include <folly/Benchmark.h>
 #include <folly/Hash.h>
-#include <folly/detail/ChecksumDetail.h>
+#include <folly/hash/detail/ChecksumDetail.h>
 #include <folly/portability/GFlags.h>
 #include <folly/portability/GTest.h>