#endif // !HAVE_VALGRIND_VALGRIND_H
+#if LLVM_ENABLE_THREADS != 0 && !defined(NDEBUG)
// These functions require no implementation, tsan just looks at the arguments
-// they're called with.
+// they're called with. However, they are required to be weak as some other
+// application or library may already be providing these definitions for the
+// same reason we are.
extern "C" {
+LLVM_ATTRIBUTE_WEAK void AnnotateHappensAfter(const char *file, int line,
+ const volatile void *cv);
+void AnnotateHappensAfter(const char *file, int line, const volatile void *cv) {
+}
+LLVM_ATTRIBUTE_WEAK void AnnotateHappensBefore(const char *file, int line,
+ const volatile void *cv);
void AnnotateHappensBefore(const char *file, int line,
const volatile void *cv) {}
-void AnnotateHappensAfter(const char *file, int line,
- const volatile void *cv) {}
+LLVM_ATTRIBUTE_WEAK void AnnotateIgnoreWritesBegin(const char *file, int line);
void AnnotateIgnoreWritesBegin(const char *file, int line) {}
+LLVM_ATTRIBUTE_WEAK void AnnotateIgnoreWritesEnd(const char *file, int line);
void AnnotateIgnoreWritesEnd(const char *file, int line) {}
}
+#endif