X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fbug.h;fp=include%2Flttng%2Fbug.h;h=96007c3fb777a5c072f4b6db08151f99dd196026;hb=4318ae1be57eb7983ab4857a7a8eeb4a030a8216;hp=0000000000000000000000000000000000000000;hpb=d4419b81b243bc3a6bdd4a09b3ca2216d044a1c7;p=ust.git

diff --git a/include/lttng/bug.h b/include/lttng/bug.h
new file mode 100644
index 0000000..96007c3
--- /dev/null
+++ b/include/lttng/bug.h
@@ -0,0 +1,32 @@
+#ifndef _LTTNG_BUG_H
+#define _LTTNG_BUG_H
+
+/*
+ * lib/bug.h
+ *
+ * (C) Copyright 2010-2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * Dual LGPL v2.1/GPL v2 license.
+ */
+
+#define BUILD_BUG_ON(condition)					\
+	((void) sizeof(char[-!!(condition)]))
+
+/**
+ * BUILD_RUNTIME_BUG_ON - check condition at build (if constant) or runtime
+ * @condition: the condition which should be false.
+ *
+ * If the condition is a constant and true, the compiler will generate a build
+ * error. If the condition is not constant, a BUG will be triggered at runtime
+ * if the condition is ever true. If the condition is constant and false, no
+ * code is emitted.
+ */
+#define BUILD_RUNTIME_BUG_ON(condition)				\
+	do {							\
+		if (__builtin_constant_p(condition))		\
+			BUILD_BUG_ON(condition);		\
+		else						\
+			BUG_ON(condition);			\
+	} while (0)
+
+#endif