<URL: http://bugs.freeciv.org/Ticket/Display.html?id=40285 >
$subject
Minor change to make it easier to add extra debug functionality; to
chain log callbacks.
My public server uses this to attach handler to store backtraces
about all LOG_FATAL and LOG_ERROR messages.
- ML
diff -Nurd -X.diff_ignore freeciv/utility/log.c freeciv/utility/log.c
--- freeciv/utility/log.c 2007-11-28 02:28:14.000000000 +0200
+++ freeciv/utility/log.c 2008-05-08 15:18:56.000000000 +0300
@@ -203,9 +203,13 @@
/**************************************************************************
Adjust the callback function after initial log_init().
**************************************************************************/
-void log_set_callback(log_callback_fn callback)
+log_callback_fn log_set_callback(log_callback_fn callback)
{
- log_callback=callback;
+ log_callback_fn old = log_callback;
+
+ log_callback = callback;
+
+ return old;
}
/**************************************************************************
diff -Nurd -X.diff_ignore freeciv/utility/log.h freeciv/utility/log.h
--- freeciv/utility/log.h 2007-03-05 19:13:42.000000000 +0200
+++ freeciv/utility/log.h 2008-05-08 15:19:11.000000000 +0300
@@ -55,7 +55,7 @@
void log_init(const char *filename, int initial_level,
log_callback_fn callback);
void log_set_level(int level);
-void log_set_callback(log_callback_fn callback);
+log_callback_fn log_set_callback(log_callback_fn callback);
void real_freelog(int level, const char *message, ...)
fc__attribute((__format__ (__printf__, 2, 3)));
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