Add benchmarks for json string serialize/deserialize

CMakeLists.txt

@@ -52,6 +52,7 @@ set(RUN_IN_PLACE ${DEFAULT_RUN_IN_PLACE} CACHE BOOL
 set(BUILD_CLIENT TRUE CACHE BOOL "Build client")
 set(BUILD_SERVER FALSE CACHE BOOL "Build server")
 set(BUILD_UNITTESTS TRUE CACHE BOOL "Build unittests")
+set(BUILD_BENCHMARKS FALSE CACHE BOOL "Build benchmarks")
 
 set(WARN_ALL TRUE CACHE BOOL "Enable -Wall for Release build")
 
@@ -280,6 +281,10 @@ elseif(CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?Clang")
 	endif()
 endif()
 
+if(BUILD_BENCHMARKS)
+	add_subdirectory(lib/catch2)
+endif()
+
 # Subdirectories
 # Be sure to add all relevant definitions above this
 add_subdirectory(src)

README.md

@@ -240,6 +240,7 @@ General options and their default values:
     BUILD_CLIENT=TRUE          - Build Minetest client
     BUILD_SERVER=FALSE         - Build Minetest server
     BUILD_UNITTESTS=TRUE       - Build unittest sources
+    BUILD_BENCHMARKS=FALSE     - Build benchmark sources
     CMAKE_BUILD_TYPE=Release   - Type of build (Release vs. Debug)
         Release                - Release build
         Debug                  - Debug build

lib/catch2/CMakeLists.txt

@@ -0,0 +1,16 @@
+# catch2 is distributed as a standalone header.
+#
+# Downloaded from:
+#
+#      https://github.com/catchorg/Catch2/releases/download/v2.13.9/catch.hpp
+#
+# The following changes were made to always print in microseconds, fixed format:
+#
+# -    explicit Duration(double inNanoseconds, Unit units = Unit::Auto)
+# +    explicit Duration(double inNanoseconds, Unit units = Unit::Microseconds)
+#
+# -        return os << duration.value() << ' ' << duration.unitsAsString();
+# +        return os << std::fixed << duration.value() << ' ' << duration.unitsAsString();
+
+add_library(catch2 INTERFACE)
+target_include_directories(catch2 INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})