perf: add targets for running C performance tests

The patch adds a targets for each C performance test in a directory
perf/ and a separate target "test-c-perf" that runs all C performance
tests at once.

NO_CHANGELOG=testing
NO_DOC=testing
NO_TEST=test infrastructure

perf/CMakeLists.txt

@@ -5,6 +5,11 @@ add_subdirectory(lua)
 find_package(benchmark QUIET)
 if (NOT ${benchmark_FOUND})
     message(AUTHOR_WARNING "Google Benchmark library was not found")
+    set(MSG "Target test-c-perf is dummy, Google Benchmark library was not found")
+    add_custom_target(test-c-perf
+                      COMMAND ${CMAKE_COMMAND} -E cmake_echo_color --red ${MSG}
+                      COMMENT ${MSG}
+    )
     return()
 endif()
 
@@ -13,25 +18,62 @@ include_directories(${PROJECT_SOURCE_DIR}/src/box)
 include_directories(${PROJECT_SOURCE_DIR}/third_party)
 include_directories(${EXTRA_CORE_INCLUDE_DIRS})
 
-function(create_perf_test)
-  cmake_parse_arguments(
-    PERF
-    ""
-    "PREFIX"
-    "SOURCES;LIBRARIES"
-    ${ARGN}
+set(RUN_PERF_C_TESTS_LIST "")
+
+function(create_perf_test_target)
+  set(prefix PERF)
+  set(noValues)
+  set(singleValues TARGET)
+  set(multiValues)
+
+  # FIXME: if we update to CMake >= 3.5, can remove this line.
+  include(CMakeParseArguments)
+  cmake_parse_arguments(${prefix}
+                        "${noValues}"
+                        "${singleValues}"
+                        "${multiValues}"
+                        ${ARGN})
+  message(STATUS "Creating C performance test ${PERF_TARGET}_perftest")
+  add_custom_target(${PERF_TARGET}_perftest
+                    COMMAND "$<TARGET_FILE:${PERF_TARGET}.perftest>"
+                    DEPENDS ${PERF_TARGET}.perftest
+                    COMMENT Running ${PERF_TARGET}_perftest
   )
-  message(STATUS "Creating performance test ${PERF_PREFIX}.perftest")
-  add_executable(${PERF_PREFIX}.perftest ${PERF_SOURCES})
-  target_link_libraries(${PERF_PREFIX}.perftest PUBLIC ${PERF_LIBRARIES})
+  set(RUN_PERF_C_TESTS_LIST ${RUN_PERF_C_TESTS_LIST} ${PERF_TARGET}_perftest PARENT_SCOPE)
+endfunction()
+
+function(create_perf_test)
+  set(prefix PERF)
+  set(noValues)
+  set(singleValues NAME)
+  set(multiValues "SOURCES;LIBRARIES")
+
+  # FIXME: if we update to CMake >= 3.5, can remove this line.
+  include(CMakeParseArguments)
+  cmake_parse_arguments(${prefix}
+                        "${noValues}"
+                        "${singleValues}"
+                        "${multiValues}"
+                        ${ARGN})
+  add_executable(${PERF_NAME}.perftest ${PERF_SOURCES})
+  target_link_libraries(${PERF_NAME}.perftest PUBLIC ${PERF_LIBRARIES})
 endfunction()
 
-create_perf_test(PREFIX tuple
+create_perf_test(NAME tuple
                  SOURCES tuple.cc ${PROJECT_SOURCE_DIR}/test/unit/box_test_utils.c
                  LIBRARIES core box tuple benchmark::benchmark
 )
+create_perf_test_target(TARGET tuple)
 
-create_perf_test(PREFIX light
+create_perf_test(NAME light
                  SOURCES light.cc ${PROJECT_SOURCE_DIR}/test/unit/box_test_utils.c
                  LIBRARIES small benchmark::benchmark
 )
+create_perf_test_target(TARGET light)
+
+create_perf_test_target(TARGET small)
+
+add_custom_target(test-c-perf
+                  DEPENDS ${RUN_PERF_C_TESTS_LIST}
+                  COMMENT "Running C performance tests"
+)