Move hashtable to ds/ folder

Notably, remove the include_directories(), which is not necessary, as
most files do not actually use this.

common/utils/CMakeLists.txt

@@ -17,9 +17,6 @@ add_subdirectory(time_manager)
 add_library(utils utils.c system.c time_meas.c time_stat.c tuntap_if.c reverse_bits.c)
 target_include_directories(utils PUBLIC .)
 target_link_libraries(utils PRIVATE ${T_LIB})
-if (ENABLE_TESTS)
-  add_subdirectory(hashtable/tests)
-endif()
 add_subdirectory(barrier)
 add_subdirectory(actor)
 add_subdirectory(shm_iq_channel)

common/utils/ds/CMakeLists.txt

@@ -2,6 +2,8 @@ add_library(ds OBJECT
             byte_array.c
             byte_array_producer.c
             seq_arr.c
+            hashtable.c
+            obj_hashtable.c
 )
 
 target_include_directories(ds PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

common/utils/ds/tests/CMakeLists.txt

@@ -2,3 +2,9 @@ add_executable(test_seq_arr test_seq_array.c)
 target_link_libraries(test_seq_arr ds alg)
 add_dependencies(tests test_seq_arr)
 add_test(NAME test_seq_arr COMMAND test_seq_arr) # no options required
+
+add_executable(test_hashtable test_hashtable.cpp)
+add_dependencies(tests test_hashtable)
+target_link_libraries(test_hashtable PRIVATE ds GTest::gtest)
+add_test(NAME test_hashtable
+  COMMAND ./test_hashtable)

common/utils/hashtable/tests/CMakeLists.txt

@@ -1,5 +0,0 @@
-add_executable(test_hashtable test_hashtable.cpp)
-add_dependencies(tests test_hashtable)
-target_link_libraries(test_hashtable PRIVATE HASHTABLE GTest::gtest)
-add_test(NAME test_hashtable
-  COMMAND ./test_hashtable)