From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Thu, 16 Jun 2011 19:33:33 +0000 (-0400)
Subject: Add bug management header
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=44d13f199a033b2a220d01003b885a0103adf5a4;p=ust.git

Add bug management header

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/ust/bug.h b/include/ust/bug.h
new file mode 100644
index 0000000..8243cc9
--- /dev/null
+++ b/include/ust/bug.h
@@ -0,0 +1,29 @@
+#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.
+ */
+
+/**
+ * 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