tsan: make detecting the need for locking when using tsan easier

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/17479)

diff --git a/include/internal/tsan_assist.h b/include/internal/tsan_assist.h
index c67c591e0eeaf437ddf4ed06f78b085d15851109..512bfe4be9e41774689d24dcfc90ce45af66e67f 100644 (file)
--- a/include/internal/tsan_assist.h
+++ b/include/internal/tsan_assist.h
@@ -125,7 +125,13 @@
 
 #ifndef TSAN_QUALIFIER
 
-# define TSAN_QUALIFIER volatile
+# ifdef OPENSSL_THREADS
+#  define TSAN_QUALIFIER volatile
+#  define TSAN_REQUIRES_LOCKING
+# else  /* OPENSSL_THREADS */
+#  define TSAN_QUALIFIER
+# endif /* OPENSSL_THREADS */
+
 # define tsan_load(ptr) (*(ptr))
 # define tsan_store(ptr, val) (*(ptr) = (val))
 # define tsan_add(ptr, n) (*(ptr) += (n))