#define _XBT_LOGV_CTOR(cat) _XBT_LOG_CONCAT2(_XBT_LOGV(cat), __constructor__)
#define _XBT_LOG_CONCAT(x, y) x ## y
#define _XBT_LOG_CONCAT2(x, y) _XBT_LOG_CONCAT(x, y)
+/* Apparently, constructor priorities are not supported by gcc on Macs */
+#if __GNUC__ && __APPLE__
+# define _XBT_LOGV_CTOR_ATTRIBUTE
+#else
+# define _XBT_LOGV_CTOR_ATTRIBUTE _XBT_GNUC_CONSTRUCTOR(600)
+#endif
/* The root of the category hierarchy. */
#define XBT_LOG_ROOT_CAT root
-/* The whole tree of categories is connected by setting the address of
- * the parent category as a field of the child one.
+/* The whole tree of categories is connected by setting the address of the
+ * parent category as a field of the child one. This is normally done at the
+ * first use of the category.
*
- * In strict ansi C, we are allowed to initialize a variable with "a
- * pointer to an lvalue designating an object of static storage
- * duration" [ISO/IEC 9899:1999, Section 6.6].
- *
- * Unfortunately, Visual C builder does not target any standard
- * compliance, and C99 is not an exception to this unfortunate rule.
- *
- * So, we work this around by adding a XBT_LOG_CONNECT_PARENT() macro,
- * allowing to connect a child to its parent. It should be used
- * during the initialization of the code, before the child category
- * gets used.
- *
- * When compiling with gcc, this is not necessary (XBT_LOG_CONNECT_PARENT
- * defines to nothing). When compiling with MSVC, this is needed if
- * you don't want to see your child category become a child of root
- * directly.
- */
-#if defined(_MSC_VER)
-# define _XBT_LOG_PARENT_INITIALIZER(parent) NULL
-# define XBT_LOG_CONNECT_PARENT(child, parent_cat) \
- _XBT_LOGV(child).parent = &_XBT_LOGV(parent_cat)
-#else
-# define _XBT_LOG_PARENT_INITIALIZER(parent) &_XBT_LOGV(parent)
-# define XBT_LOG_CONNECT_PARENT(child, parent_cat) \
- /* xbt_assert(_XBT_LOGV(child).parent == &_XBT_LOGV(parent_cat)); */ \
- ((void)0)
-#endif
+ * It is however necessary to make this connections as early as possible, if we
+ * want the category to be listed by --help-log-categories.
+ *
+ * When possible, the initializations takes place automatically before the start
+ * of main(). It's the case when compiling with gcc.
+ *
+ * For the other cases, you can use the XBT_LOG_CONNECT(cat) macro to force
+ * early initialization. See, for example, in xbt/log.c, the function
+ * xbt_log_connect_categories().
+ */
#define XBT_LOG_CONNECT(cat) \
if (1) { \
* to avoid an extra declaration of root when XBT_LOG_NEW_SUBCATEGORY is called by
* XBT_LOG_NEW_CATEGORY */
#define XBT_LOG_NEW_SUBCATEGORY_helper(catName, parent, desc) \
- XBT_PUBLIC(void) _XBT_LOGV_CTOR(catName)(void); \
+ XBT_PUBLIC(void) _XBT_LOGV_CTOR(catName)(void) _XBT_LOGV_CTOR_ATTRIBUTE; \
void _XBT_LOGV_CTOR(catName)(void) \
{ \
XBT_LOG_EXTERNAL_CATEGORY(catName); \
- /* Note: _XBT_LOGV(parent) should be already declared here. */ \
- XBT_LOG_CONNECT_PARENT(catName, parent); \
- _xbt_log_cat_init(&_XBT_LOGV(catName), xbt_log_priority_uninitialized); \
+ if (!_XBT_LOGV(catName).initialized) { \
+ _xbt_log_cat_init(&_XBT_LOGV(catName), xbt_log_priority_uninitialized); \
+ } \
} \
XBT_EXPORT_NO_IMPORT(s_xbt_log_category_t) _XBT_LOGV(catName) = { \
- _XBT_LOG_PARENT_INITIALIZER(parent), \
+ &_XBT_LOGV(parent), \
NULL /* firstChild */, \
NULL /* nextSibling */, \
#catName, \
*/
#define XBT_CRITICAL(...) XBT_LOG(xbt_log_priority_critical, __VA_ARGS__)
+#define _XBT_IN_OUT(...) \
+ _XBT_IF_ONE_ARG(_XBT_IN_OUT_ARG1, _XBT_IN_OUT_ARGN, __VA_ARGS__)(__VA_ARGS__)
+#define _XBT_IN_OUT_ARG1(fmt) \
+ XBT_LOG(xbt_log_priority_trace, fmt, _XBT_FUNCTION)
+#define _XBT_IN_OUT_ARGN(fmt, ...) \
+ XBT_LOG(xbt_log_priority_trace, fmt, _XBT_FUNCTION, __VA_ARGS__)
+
/** @ingroup XBT_log
* @hideinitializer
* @brief Log at TRACE priority that we entered in current function, appending a user specified format.
*/
-#define XBT_IN(...) \
- _XBT_IF_ONE_ARG(_XBT_IN_ARG1, _XBT_IN_ARGN, __VA_ARGS__)(__VA_ARGS__)
-#define _XBT_IN_ARG1(fmt) \
- XBT_LOG(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION)
-#define _XBT_IN_ARGN(fmt, ...) \
- XBT_LOG(xbt_log_priority_trace, ">> begin of %s" fmt, _XBT_FUNCTION, __VA_ARGS__)
+#define XBT_IN(...) _XBT_IN_OUT(">> begin of %s" __VA_ARGS__)
/** @ingroup XBT_log
* @hideinitializer
- * @brief Log at TRACE priority that we exited the current function.
+ * @brief Log at TRACE priority that we exited the current function, appending a user specified format.
*/
-#define XBT_OUT() XBT_LOG(xbt_log_priority_trace, "<< end of %s", _XBT_FUNCTION)
+#define XBT_OUT(...) _XBT_IN_OUT("<< end of %s" __VA_ARGS__)
/** @ingroup XBT_log
* @hideinitializer
- * @brief Log at TRACE priority a message indicating that we reached that point.
+ * @brief Log at TRACE priority a message indicating that we reached that point, appending a user specified format.
*/
-#define XBT_HERE() XBT_LOG(xbt_log_priority_trace, "-- was here")
+#define XBT_HERE(...) XBT_LOG(xbt_log_priority_trace, "-- was here" __VA_ARGS__)
#ifdef XBT_USE_DEPRECATED
