From ea053d96f7e89e053d4af8d39b04c5428760345f Mon Sep 17 00:00:00 2001
From: David Härdeman <david@hardeman.nu>
Date: Tue, 23 Jun 2020 20:56:22 +0200
Subject: Big renaming, move some more functionality to shared lib

---
 shared/debug.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 shared/debug.h

(limited to 'shared/debug.h')

diff --git a/shared/debug.h b/shared/debug.h
new file mode 100644
index 0000000..8581a9a
--- /dev/null
+++ b/shared/debug.h
@@ -0,0 +1,94 @@
+#ifndef foodebughfoo
+#define foodebughfoo
+
+enum debug_lvl {
+	DBG_ERROR	= (0x1 << 1),
+	DBG_INFO	= (0x1 << 2),
+	DBG_VERBOSE	= (0x1 << 3),
+	DBG_CFG		= (0x1 << 4),
+	DBG_REF		= (0x1 << 5),
+	DBG_MALLOC	= (0x1 << 6),
+	DBG_ANN		= (0x1 << 7),
+	DBG_SIG		= (0x1 << 8),
+	DBG_UR		= (0x1 << 9),
+	DBG_SRV		= (0x1 << 10),
+	DBG_PROXY	= (0x1 << 11),
+	DBG_RCON	= (0x1 << 12),
+	DBG_IDLE	= (0x1 << 13),
+	DBG_IGMP	= (0x1 << 14),
+	DBG_SYSD	= (0x1 << 15),
+	DBG_DNS		= (0x1 << 16),
+	DBG_TIMER	= (0x1 << 17),
+};
+
+static inline bool
+debug_enabled(enum debug_lvl lvl)
+{
+	return !!(lvl & debug_mask);
+}
+
+/* These need to be defined in the linking binary */
+void __debug(enum debug_lvl lvl, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
+
+void __die(const char *fmt, ...) __attribute__((format(printf, 1, 2)));
+
+#define __ifdebug(lvl, fmt, ...) 						\
+	do {									\
+		if (debug_enabled((lvl)))					\
+			__debug((lvl), fmt "\n"__VA_OPT__(,) __VA_ARGS__);	\
+	} while (0)
+
+#define debug(lvl, fmt, ...)	__ifdebug((lvl), "%s:%s:%i: " fmt,		\
+					  __FILE__, __func__, __LINE__ 		\
+					  __VA_OPT__(,) __VA_ARGS__)
+#define verbose(fmt, ...)	__ifdebug(DBG_VERBOSE, fmt, __VA_ARGS__)
+#define info(fmt, ...)		__ifdebug(DBG_INFO, fmt,  __VA_ARGS__)
+#define error(fmt, ...)		__ifdebug(DBG_ERROR, "%s:%s:%i: " fmt,		\
+					  __FILE__, __func__, __LINE__ 		\
+					  __VA_OPT__(,) __VA_ARGS__)
+
+#define die(fmt, ...)								\
+	__die("%s:%s:%i: " fmt "\n",						\
+	      __FILE__, __func__, __LINE__					\
+	      __VA_OPT__(,) __VA_ARGS__)
+
+#define assert_log(expr, msg) 							\
+	((expr) ?								\
+	 (true) :								\
+	 (__debug(DBG_ERROR, "%s:%s:%i: assertion \"" msg "\" failed\n",	\
+		  __FILE__, __func__, __LINE__), false))
+
+#define assert_return(expr, ...)						\
+	do {									\
+		if (!assert_log(expr, #expr))					\
+			return __VA_ARGS__;					\
+	} while (0)
+
+#define assert_return_silent(expr, ...)						\
+	do {									\
+		if (!(expr))							\
+			return __VA_ARGS__;					\
+	} while (0)
+
+#define assert_die(expr, msg)							\
+	do {									\
+		if (!assert_log(expr, #expr))					\
+			die(msg);						\
+	} while (0)
+
+#define assert_task_alive_or(lvl, t, cmd) 	\
+do {						\
+	if (!(t)) {				\
+		error("invalid task");		\
+		cmd;				\
+	}					\
+						\
+	if ((t)->dead) {			\
+		debug((lvl), "task dead");	\
+		cmd;				\
+	}					\
+} while(0)
+
+#define assert_task_alive(lvl, t) assert_task_alive_or((lvl), (t), return)
+
+#endif
-- 
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