1 files changed, 27 insertions, 0 deletions
diff --git a/src/magic.h b/src/magic.h
new file mode 100644
index 0000000..15eacee
--- /dev/null
+++ b/src/magic.h
@@ -0,0 +1,27 @@
+/**
+ * @file magic.h  Interface to magic macros
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+
+
+#ifndef RELEASE
+
+#ifndef MAGIC
+#error "macro MAGIC must be defined"
+#endif
+
+/** Check magic number */
+#define MAGIC_DECL uint32_t magic;
+#define MAGIC_INIT(s) (s)->magic = MAGIC
+#define MAGIC_CHECK(s) \
+	if (MAGIC != s->magic) {					\
+		warning("%s: wrong magic struct=%p (magic=0x%08x)\n",	\
+			__FUNCTION__, s, s->magic);			\
+		BREAKPOINT;						\
+	}
+#else
+#define MAGIC_DECL
+#define MAGIC_INIT(s)
+#define MAGIC_CHECK(s) do {(void)(s);} while (0);
+#endif