X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fctf-writer%2Fassert-pre.h;h=c0a24614c10d90905b6fef7c85b6d77513e401e7;hb=34ae0d6283e68bfecdcc80f56ff174bb2f49c7fa;hp=8f66d514d6098bb4f6ccda2d70234efcf7919132;hpb=578e048b5debf169e286e5b5cc747b5d6c16886d;p=babeltrace.git

diff --git a/src/ctf-writer/assert-pre.h b/src/ctf-writer/assert-pre.h
index 8f66d514..c0a24614 100644
--- a/src/ctf-writer/assert-pre.h
+++ b/src/ctf-writer/assert-pre.h
@@ -25,27 +25,59 @@
  */
 
 /*
- * The macros in this header use macros defined in
- * <logging/log.h>. We don't want this header to
- * automatically include <logging/log.h> because you
- * need to manually define BT_LOG_TAG before including
- * <logging/log.h> and it is unexpected that you
- * also need to define it before including this header.
- *
- * This is a reminder that in order to use
- * <ctf-writer/assert-pre.h>, you also need to use logging
- * explicitly.
+ * The macros in this header use macros defined in "logging/log.h". We
+ * don't want this header to automatically include "logging/log.h"
+ * because you need to manually define BT_LOG_TAG before including
+ * "logging/log.h" and it is unexpected that you also need to define it
+ * before including this header.
+ *
+ * This is a reminder that in order to use "ctf-writer/assert-pre.h",
+ * you also need to use logging explicitly.
  */
 
-#ifndef BABELTRACE_LOGGING_INTERNAL_H
-# error Include <logging/log.h> before this header.
+#ifndef BT_LOG_SUPPORTED
+# error Include "logging/log.h" before this header.
 #endif
 
 #include <stdlib.h>
 #include <inttypes.h>
-#include "common/babeltrace.h"
+#include "common/macros.h"
 
 #ifdef BT_DEV_MODE
+/*
+ * Prints the details of an unsatisfied precondition without immediately
+ * aborting. You should use this within a function which checks
+ * preconditions, but which is called from a BT_CTF_ASSERT_PRE()
+ * context, so that the function can still return its result for
+ * BT_CTF_ASSERT_PRE() to evaluate it.
+ *
+ * Example:
+ *
+ *     BT_CTF_ASSERT_PRE_FUNC
+ *     static inline bool check_complex_precond(...)
+ *     {
+ *         ...
+ *
+ *         if (...) {
+ *             BT_CTF_ASSERT_PRE_MSG("Invalid object: ...", ...);
+ *             return false;
+ *         }
+ *
+ *         ...
+ *     }
+ *
+ *     ...
+ *
+ *     BT_CTF_ASSERT_PRE(check_complex_precond(...),
+ *                   "Precondition is not satisfied: ...", ...);
+ */
+# define BT_CTF_ASSERT_PRE_MSG(_fmt, ...)				\
+	do {								\
+		_bt_log_write_d(_BT_LOG_SRCLOC_FUNCTION, __FILE__,	\
+			__LINE__, BT_LOG_FATAL, BT_LOG_TAG, (_fmt),	\
+			##__VA_ARGS__);					\
+	} while (0)
+
 /*
  * Asserts that the library precondition _cond is satisfied.
  *
@@ -58,9 +90,9 @@
 # define BT_CTF_ASSERT_PRE(_cond, _fmt, ...)				\
 	do {								\
 		if (!(_cond)) {						\
-			BT_LOGF_STR("Library precondition not satisfied; error is:"); \
-			BT_LOGF((_fmt), ##__VA_ARGS__);		\
-			BT_LOGF_STR("Aborting...");			\
+			BT_CTF_ASSERT_PRE_MSG("CTF writer precondition not satisfied; error is:"); \
+			BT_CTF_ASSERT_PRE_MSG((_fmt), ##__VA_ARGS__);	\
+			BT_CTF_ASSERT_PRE_MSG("Aborting...");		\
 			abort();					\
 		}							\
 	} while (0)
@@ -97,10 +129,9 @@
  *     BT_CTF_ASSERT_PRE(check_complex_precond(...),
  *                   "Precondition is not satisfied: ...", ...);
  */
-# define BT_CTF_ASSERT_PRE_MSG	BT_LOGF
 #else
 # define BT_CTF_ASSERT_PRE(_cond, _fmt, ...)	((void) sizeof((void) (_cond), 0))
-# define BT_CTF_ASSERT_PRE_FUNC	BT_UNUSED
+# define BT_CTF_ASSERT_PRE_FUNC	__attribute__((unused))
 # define BT_CTF_ASSERT_PRE_MSG(_fmt, ...)
 #endif /* BT_DEV_MODE */