From 4b3aa089d97ad4eda46565021c83abf47b90381c Mon Sep 17 00:00:00 2001
From: Sherry Yuan <sherry.yuan@intel.com>
Date: Tue, 8 Feb 2022 07:47:15 -0800
Subject: [PATCH] Add thread sanitizer option to cmake

----------------------------------------------

Thread sanitizer (TSAN) is a tool that detect data races, deadlocks  between threads. (it also sometimes report heap-use-after-free in same thread check #71 for issues reported in current repo)

For more information, checkout https://clang.llvm.org/docs/ThreadSanitizer.html
---
 CMakeLists.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ac8a0c6..8e84ba8a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -68,6 +68,18 @@ if(ACL_CODE_COVERAGE)
   endif()
 endif()
 
+# Flag for tsan scans
+option(ACL_TSAN "Build with tsan" OFF)
+message(STATUS "Build with tsan: ${ACL_TSAN}")
+if(ACL_TSAN)
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=thread -fno-omit-frame-pointer")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=thread -fno-omit-frame-pointer")
+  else()
+    message(FATAL_ERROR "cannot build with tsan tools due to unsupported CXX compiler")
+  endif()
+endif()
+
 ################################################################################
 ### Modified Debug flags
 ################################################################################