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gsignal: improve warning output

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When looking up signals by name (to connect, for example) and the named
signal cannot be found on the given instance, report the type of the
instance.

This is quite a lot more useful as a diagnostic message than only a
memory address.

https://bugzilla.gnome.org/show_bug.cgi?id=694350
This commit is contained in:
Ryan Lortie 2013-02-21 11:25:26 +00:00
parent aede774642
commit f5d40bd813
1 changed files with 18 additions and 8 deletions
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26
gobject/gsignal.c
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@ -1157,7 +1157,8 @@ g_signal_stop_emission_by_name (gpointer instance,
if (detail && !(node->flags & G_SIGNAL_DETAILED))
g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
Emission *emission_list = node->flags & G_SIGNAL_NO_RECURSE ? g_restart_emissions : g_recursive_emissions;
@ -1177,7 +1178,8 @@ g_signal_stop_emission_by_name (gpointer instance,
}
}
else
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
}
@ -2348,7 +2350,8 @@ g_signal_connect_closure (gpointer instance,
if (detail && !(node->flags & G_SIGNAL_DETAILED))
g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
Handler *handler = handler_new (after);
@ -2368,7 +2371,8 @@ g_signal_connect_closure (gpointer instance,
}
}
else
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
return handler_seq_no;
@ -2447,7 +2451,8 @@ g_signal_connect_data (gpointer instance,
if (detail && !(node->flags & G_SIGNAL_DETAILED))
g_warning ("%s: signal `%s' does not support details", G_STRLOC, detailed_signal);
else if (!g_type_is_a (itype, node->itype))
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
else
{
Handler *handler = handler_new (after);
@ -2466,7 +2471,8 @@ g_signal_connect_data (gpointer instance,
}
}
else
g_warning ("%s: signal `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
SIGNAL_UNLOCK ();
return handler_seq_no;
@ -3399,12 +3405,15 @@ g_signal_emit_by_name (gpointer instance,
{
GQuark detail = 0;
guint signal_id;
GType itype;
g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
g_return_if_fail (detailed_signal != NULL);
itype = G_TYPE_FROM_INSTANCE (instance);
SIGNAL_LOCK ();
signal_id = signal_parse_name (detailed_signal, G_TYPE_FROM_INSTANCE (instance), &detail, TRUE);
signal_id = signal_parse_name (detailed_signal, itype, &detail, TRUE);
SIGNAL_UNLOCK ();
if (signal_id)
@ -3416,7 +3425,8 @@ g_signal_emit_by_name (gpointer instance,
va_end (var_args);
}
else
g_warning ("%s: signal name `%s' is invalid for instance `%p'", G_STRLOC, detailed_signal, instance);
g_warning ("%s: signal name `%s' is invalid for instance `%p' of type `%s'",
G_STRLOC, detailed_signal, instance, g_type_name (itype));
}
static gboolean