rwlock of pthread demo

rwlock_example/CMakeLists.txt

@@ -0,0 +1,21 @@
+# CMakeList.txt : CMake project for rwlock_example, include source and define
+# project specific logic here.
+#
+cmake_minimum_required (VERSION 3.8)
+
+# Enable Hot Reload for MSVC compilers if supported.
+if (POLICY CMP0141)
+  cmake_policy(SET CMP0141 NEW)
+  set(CMAKE_MSVC_DEBUG_INFORMATION_FORMAT "$<IF:$<AND:$<C_COMPILER_ID:MSVC>,$<CXX_COMPILER_ID:MSVC>>,$<$<CONFIG:Debug,RelWithDebInfo>:EditAndContinue>,$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>>")
+endif()
+
+project ("rwlock_example")
+
+# Add source to this project's executable.
+add_executable (rwlock_example "rwlock_example.c" )
+
+if (CMAKE_VERSION VERSION_GREATER 3.12)
+  set_property(TARGET rwlock_example PROPERTY CXX_STANDARD 20)
+endif()
+
+# TODO: Add tests and install targets if needed.