Fix: event probes attached before event enabled

[lttng-ust.git] / include / lttng / ust-tracer.h

diff --git a/include/lttng/ust-tracer.h b/include/lttng/ust-tracer.h
index b4268ac51dc1598864d3246b7c2329b1841c861b..546fc2c5422cbfde9a0c38d16b43ebff0f1dd93b 100644 (file)
--- a/include/lttng/ust-tracer.h
+++ b/include/lttng/ust-tracer.h
@@ -27,6 +27,11 @@
  * SOFTWARE.
  */
 
+#if defined (__cplusplus)
+#include <type_traits>
+#endif
+
+#include <lttng/ust-compiler.h>
 #include <lttng/ust-config.h>
 #include <lttng/ust-version.h>
 
@@ -45,6 +50,32 @@
 #define lttng_alignof(type)    1
 #endif
 
-#define lttng_is_signed_type(type)           (((type)(-1)) < 0)
+#define lttng_is_signed_type(type)           ((type) -1 < (type) 0)
+
+/*
+ * This macro adds a compilation assertion that CTF arrays and sequences
+ * declared by the users are of an integral type.
+ */
+
+#if defined(__cplusplus)
+#define _lttng_is_integer(type) (std::is_integral<type>::value)
+#else
+#define _lttng_is_integer(type) (__builtin_types_compatible_p(type, _Bool) || \
+               __builtin_types_compatible_p(type, char) || \
+               __builtin_types_compatible_p(type, unsigned char) || \
+               __builtin_types_compatible_p(type, short) || \
+               __builtin_types_compatible_p(type, unsigned short) || \
+               __builtin_types_compatible_p(type, int) || \
+               __builtin_types_compatible_p(type, unsigned int) || \
+               __builtin_types_compatible_p(type, long) || \
+               __builtin_types_compatible_p(type, unsigned long) || \
+               __builtin_types_compatible_p(type, long long) || \
+               __builtin_types_compatible_p(type, unsigned long long))
+#endif
+
+#define _lttng_array_element_type_is_supported(_type, _item) \
+               lttng_static_assert(_lttng_is_integer(_type), \
+                       "Non-integer type `" #_item "` not supported as element of CTF_ARRAY or CTF_SEQUENCE", \
+                       Non_integer_type__##_item##__not_supported_as_element_of_CTF_ARRAY_or_CTF_SEQUENCE);
 
 #endif /* _LTTNG_UST_TRACER_H */