allow AsyncSignalHandler to attach and detach from an EventBase

[folly.git] / folly / CPortability.h

diff --git a/folly/CPortability.h b/folly/CPortability.h
index 01e972e9ea03723c7d418de38cdc6b2879d290b6..1a47d2518ad6d447260da0a4c6e4ef69cd2c1f34 100644 (file)
--- a/folly/CPortability.h
+++ b/folly/CPortability.h
@@ -90,9 +90,10 @@
  * used as folly whitelists some functions.
  */
 #if UNDEFINED_SANITIZER
-# define UBSAN_DISABLE(x) __attribute__((no_sanitize(x)))
+#define FOLLY_DISABLE_UNDEFINED_BEHAVIOR_SANITIZER(...) \
+  __attribute__((no_sanitize(__VA_ARGS__)))
 #else
-# define UBSAN_DISABLE(x)
+#define FOLLY_DISABLE_UNDEFINED_BEHAVIOR_SANITIZER(...)
 #endif // UNDEFINED_SANITIZER
 
 /**
@@ -125,3 +126,12 @@
 #else
 # define FOLLY_ALWAYS_INLINE inline
 #endif
+
+// attribute hidden
+#if _MSC_VER
+#define FOLLY_ATTR_VISIBILITY_HIDDEN
+#elif defined(__clang__) || defined(__GNUC__)
+#define FOLLY_ATTR_VISIBILITY_HIDDEN __attribute__((__visibility__("hidden")))
+#else
+#define FOLLY_ATTR_VISIBILITY_HIDDEN
+#endif