I met a strange problem: after dispose ( or during dispose) g_object_ref
could also succeed! http://pastebin.com/d631246a7
It crashes on line 24, which is almost impossible.
1st, I checked these variables.
2nd, I called g_object_ref(self) to avoid self being disposed while this
function has not returned.
The only explanation is that : after dispose is called but before finalize
is called, g_object_ref still could succeed!
Is that true?
1. static gboolean vivs_net_inspiration_on_recv(GIOChannel *source,
GIOCondition condition, gpointer data)
2. {
3. VivsNetInspiration* self = VIVS_NET_INSPIRATION(data);
4.
5. if(!g_object_ref(self))
6. return FALSE;
7.
8. g_mutex_lock(self->priv->lock);
9.
10. gsize length = 0;
11. GError* err = NULL;
12.
13. if(self->priv->channel && self->priv->composition)
14. {
15. GIOStatus status = g_io_channel_read_chars(
self->priv->channel,
16. self->priv->pkt_buffer, MAX_PKT_LEN, &length,
&err);
17. if(G_IO_STATUS_NORMAL == status)
18. {
19. // ??????????? the following line crash because
self->priv->composition is NULL
20. // at this moment, which is almost impossible.
21. // composition could only be null after dispose, but I
have called g_object_ref(self)
22. // How can this happen!!
23.
24. vivs_icomposition_write(self->priv->composition,
self->priv->pkt_buffer, length);
25. }
26. else if(G_IO_STATUS_AGAIN != status)
27. {
28. g_assert(err != NULL);
29. g_error_free(err);
30. }
31. }
32.
33. on_return:
34. g_mutex_unlock(self->priv->lock);
35.
36. g_object_unref(self);
37. return TRUE;
38. }
--
look to the things around you,the immediate world around you, if you are
alive,it will mean something to you ——Paul Strand
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