X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=include%2Fusterr.h;h=b97ad6ba3559621d3cd9b4162bbae298926b4c26;hb=900e307ed99ca9cb4bfe574ee4f4e1bd9c1baccc;hp=6b8817764803f66f55bb2b19ddac83d8987f34bb;hpb=bf0d695d692163edb23b8fbbbd976387dfef232d;p=ust.git

diff --git a/include/usterr.h b/include/usterr.h
index 6b88177..b97ad6b 100644
--- a/include/usterr.h
+++ b/include/usterr.h
@@ -1,3 +1,20 @@
+/* Copyright (C) 2009  Pierre-Marc Fournier
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
 #ifndef USTERR_H
 #define USTERR_H
 
@@ -8,6 +25,8 @@
 #include <stdarg.h>
 #include <stdio.h>
 
+#include <ust/core.h>
+
 #include "share.h"
 
 #ifndef UST_COMPONENT
@@ -23,7 +42,13 @@
  * signal handlers, so we must use a print method which is signal safe.
  */
 
-extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...);
+extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...)
+	__attribute__ ((format (printf, 3, 4)));
+
+static inline void __attribute__ ((format (printf, 1, 2)))
+	__check_ust_safe_fmt(const char *fmt, ...)
+{
+}
 
 #define sigsafe_print_err(fmt, args...) \
 { \
@@ -54,8 +79,8 @@ extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...);
 # define DBG(fmt, args...) ERRMSG(fmt, ## args)
 # define DBG_raw(fmt, args...) do { sigsafe_print_err(fmt, ## args); fflush(stderr); } while(0)
 #else
-# define DBG(fmt, args...) do {} while(0)
-# define DBG_raw(fmt, args...) do {} while(0)
+# define DBG(fmt, args...) __check_ust_safe_fmt(fmt, ## args)
+# define DBG_raw(fmt, args...) __check_ust_safe_fmt(fmt, ## args)
 #endif
 #define WARN(fmt, args...) ERRMSG("Warning: " fmt, ## args)
 #define ERR(fmt, args...) ERRMSG("Error: " fmt, ## args)
@@ -80,5 +105,6 @@ extern int ust_safe_snprintf(char *str, size_t n, const char *fmt, ...);
 
 #define BUG_ON(condition) do { if (unlikely(condition)) ERR("condition not respected (BUG)"); } while(0)
 #define WARN_ON(condition) do { if (unlikely(condition)) WARN("condition not respected on line %s:%d", __FILE__, __LINE__); } while(0)
+#define WARN_ON_ONCE(condition) WARN_ON(condition)
 
 #endif /* USTERR_H */