add benchmark helper function and first benchmark

Author: meastp

cmake/OpenCensusHelpers.cmake

@@ -38,6 +38,19 @@ function(opencensus_test NAME SRC)
   endif()
 endfunction()
 
+# Helper function like bazel's cc_test. Usage:
+#
+# opencensus_benchmark(trace_some_test internal/some_test.cc dep1 dep2...)
+function(opencensus_benchmark NAME SRC)
+  #if(BUILD_TESTING)
+    set(_NAME "opencensus_${NAME}")
+    add_executable(${_NAME} ${SRC})
+    prepend_opencensus(DEPS "${ARGN}")
+    target_link_libraries(${_NAME} "${DEPS}" benchmark)
+    #add_test(NAME ${_NAME} COMMAND ${_NAME})
+  #endif()
+endfunction()
+
 # Helper function like bazel's cc_library.  Libraries are namespaced as
 # opencensus_* and public libraries are also aliased as opencensus-cpp::*.
 function(opencensus_lib NAME)

opencensus/common/internal/CMakeLists.txt

@@ -1,41 +1,41 @@
-# Copyright 2018, OpenCensus Authors
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-opencensus_lib(common_hash_mix)
-
-opencensus_lib(common_random
-               SRCS
-               random.cc
-               DEPS
-               absl::base
-               absl::synchronization
-               absl::time)
-
-opencensus_lib(common_stats_object DEPS absl::time)
-
-# Define NOMINMAX to fix build errors when compiling with MSVC.
-target_compile_definitions(opencensus_common_stats_object INTERFACE
-                           $<$<CXX_COMPILER_ID:MSVC>:NOMINMAX>)
-
-opencensus_lib(common_string_vector_hash)
-
-opencensus_test(common_random_test random_test.cc common_random)
-
-opencensus_test(common_stats_object_test
-                stats_object_test.cc
-                common_stats_object
-                absl::strings
-                absl::span)
-
-# TODO: random_benchmark
+# Copyright 2018, OpenCensus Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+opencensus_lib(common_hash_mix)
+
+opencensus_lib(common_random
+               SRCS
+               random.cc
+               DEPS
+               absl::base
+               absl::synchronization
+               absl::time)
+
+opencensus_lib(common_stats_object DEPS absl::time)
+
+# Define NOMINMAX to fix build errors when compiling with MSVC.
+target_compile_definitions(opencensus_common_stats_object INTERFACE
+                           $<$<CXX_COMPILER_ID:MSVC>:NOMINMAX>)
+
+opencensus_lib(common_string_vector_hash)
+
+opencensus_test(common_random_test random_test.cc common_random)
+
+opencensus_benchmark(common_random_benchmark random_benchmark.cc common_random)
+
+opencensus_test(common_stats_object_test
+                stats_object_test.cc
+                common_stats_object
+                absl::strings
+                absl::span)