X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fust-utils.h;h=d815cf0cc465ef5f3a8864e12d5125fed85057ff;hb=a9bd72496f60cd4cddb435cc6804381d6061feda;hp=d2747d4a6a388b6ac312f4e7b2528048e4de9209;hpb=10937ee5c85456292ce4e8d67c9ac7bc37caf974;p=lttng-ust.git

diff --git a/include/lttng/ust-utils.h b/include/lttng/ust-utils.h
index d2747d4a..d815cf0c 100644
--- a/include/lttng/ust-utils.h
+++ b/include/lttng/ust-utils.h
@@ -58,15 +58,29 @@
 		__builtin_types_compatible_p(type, unsigned long long))
 #endif
 
+/**
+ * lttng_ust_is_pointer_type - check if type is a pointer
+ *
+ * Returns true if the type of @type is a pointer.
+ */
+#if defined(__cplusplus)
+#define lttng_ust_is_pointer_type(type) (std::is_pointer<type>::value)
+#else
+/* The difference between two pointers is an integer. */
+#define lttng_ust_is_pointer_type(type) \
+	(lttng_ust_is_integer_type(typeof(((type)1 - (type)1))) && !lttng_ust_is_integer_type(type))
+#endif
+
+
 /**
  * lttng_ust_field_array_element_type_is_supported -
  *
  * Adds a compilation assertion that array and sequence fields declared by the
- * user are of an integral type.
+ * user are of an integral or pointer type.
  */
 #define lttng_ust_field_array_element_type_is_supported(type, item) \
-		lttng_ust_static_assert(lttng_ust_is_integer_type(type), \
-			"Non-integer type `" #item "` not supported as element of LTTNG_UST_FIELD_ARRAY or LTTNG_UST_FIELD_SEQUENCE", \
+		lttng_ust_static_assert(lttng_ust_is_integer_type(type) || lttng_ust_is_pointer_type(type), \
+			"Non-integer, non-pointer type `" #item "` not supported as element of LTTNG_UST_FIELD_ARRAY or LTTNG_UST_FIELD_SEQUENCE", \
 			Non_integer_type__##item##__not_supported_as_element_of_LTTNG_UST_FIELD_ARRAY_or_LTTNG_UST_FIELD_SEQUENCE)
 
 
@@ -138,7 +152,7 @@
  * @align_drift:  object offset from an "alignment"-aligned address.
  * @alignment:    natural object alignment. Must be non-zero, power of 2.
  *
- * Returns the offset that must be substracted to align towards lower addresses.
+ * Returns the offset that must be subtracted to align towards lower addresses.
  */
 #define lttng_ust_offset_align_floor(align_drift, alignment)		       \
 	({								       \