X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=src%2Furcu-utils.h;h=407f42e07e6fd078d247e707a3058f3aa6cb9dff;hp=1d91bc92be24f7906547db2bc561150b45f17edd;hb=83e334d03eaba62df373cf44298616458900078a;hpb=4477a87021ffbfbfdb2a2084d05a084171343d36

diff --git a/src/urcu-utils.h b/src/urcu-utils.h
index 1d91bc9..407f42e 100644
--- a/src/urcu-utils.h
+++ b/src/urcu-utils.h
@@ -26,4 +26,39 @@
 #define urcu_stringify(a) _urcu_stringify(a)
 #define _urcu_stringify(a) #a
 
+#define max_t(type, x, y)				\
+	({						\
+		type __max1 = (x);              	\
+		type __max2 = (y);              	\
+		__max1 > __max2 ? __max1: __max2;	\
+	})
+
+#define min_t(type, x, y)				\
+	({						\
+		type __min1 = (x);              	\
+		type __min2 = (y);              	\
+		__min1 <= __min2 ? __min1: __min2;	\
+	})
+
+/* There is no concept of symbol aliases on MacOS */
+#ifdef __APPLE__
+#define URCU_ATTR_ALIAS(x)
+#else
+#define URCU_ATTR_ALIAS(x) __attribute__((alias(x)))
+#endif
+
+#ifdef CONFIG_RCU_TLS
+#define DEFINE_URCU_TLS_ALIAS_1(type, name, alias)		\
+	URCU_ATTR_ALIAS(#name)					\
+	extern type alias
+
+#else
+#define DEFINE_URCU_TLS_ALIAS_1(type, name, alias)		\
+	URCU_ATTR_ALIAS("*__tls_access_" #name)			\
+	type *__tls_access_ ## alias()
+#endif
+
+#define DEFINE_URCU_TLS_ALIAS(type, name, alias)		\
+	DEFINE_URCU_TLS_ALIAS_1(type, name, alias)
+
 #endif /* _URCU_UTILS_H */