[Licq-devel] Problem with making my own plugin

[Anders Olofsson]

I've made my own plugin that, when a message is received, displays the sender's name on an external display. The plugin works great except for one problem. When I shutdown licq, licq never terminates. I get debug printouts from all plugins (qt-gui, msn and my own) that they are shutting down and then nothing more happens.

Removing the msn plugin does not solve the problem.



My plugin (attached file) is based mostly on the osd plugin.


Below is what information I could think of that may be informative.

Does anyone have an idea what I should do to fix this?

/Anders


Output from "licq -d15" when shutting down licq:
21:16:07: [END] Shutting down daemon.
21:16:07: [END] Exiting main window (qt gui).
21:16:07: LedFront plugin is shutting down.
21:16:07: [END] Shutting down gui.
21:16:08: [END] Plugin KDE GUI exited with code 0.
21:16:08: [MSN] Exiting.
21:16:08: [END] Plugin MSN exited with code 0.
21:16:08: LedFront plugin disabled.
# Nothing more happens



21:17:08: [END] Shutting down daemon.
21:17:08: [END] Exiting main window (qt gui).
21:17:08: [END] Shutting down gui.
21:17:08: LedFront plugin is shutting down.
21:17:08: [MSN] Exiting.
# Nothing more happens


Without my plugin loaded:
21:19:47: [END] Shutting down daemon.
21:19:47: [END] Exiting main window (qt gui).
21:19:47: [END] Shutting down gui.
21:19:47: [END] Plugin KDE GUI exited with code 0.
21:19:47: [MSN] Exiting.
21:19:47: [END] Plugin MSN exited with code 0.
# Program terminated




(gdb) info threads

(gdb) thread 1

(gdb) bt
#0  0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0

#2  0x08075d28 in CLicq::Main ()
#3  0x08077e7f in main ()
(gdb) thread 3

(gdb) bt
#0  0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0

#2  0xb79de79c in LP_Exit () from /usr/local/lib/licq/licq_kde-gui.so
#3  0xb79df5c5 in LP_Main_tep () from /usr/local/lib/licq/licq_kde-gui.so
#4  0xb7e150bd in start_thread () from /lib/tls/libpthread.so.0
#5  0xb7c5792e in clone () from /lib/tls/libc.so.6
(gdb) thread 7

(gdb) bt
#0  0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0

#2  0x080c6d78 in Shutdown_tep ()
#3  0xb7e150bd in start_thread () from /lib/tls/libpthread.so.0
#4  0xb7c5792e in clone () from /lib/tls/libc.so.6

If I open the plugin configuration window and try to unload my plugin, I get "LedFront plugin is shutting down." but then the window refreshes and the load-checkbox is again checked. If I try again I do not get any further debug printouts but the checkbox remains checked. If I remove my plugin (by editing licq.conf) licq terminates with no problems. I am running svn version of licq but I've had the same problem with 1.3.2 and 1.3.4. The file ledmsg.h (not attached) contains only constants (with #define) and the ledmsg_t struct. Same thing but I remove the call to UnregisterPlugin() from my plugin when shutting down: The following is a printout from gdb after I've exited licq and waited for a few seconds: (Note: This is with the MSN plugin unloaded. If loaded I get a fourth thread in protocol_msn.so also in mutex_lock_wait) 7 Thread -1280050256 (LWP 12540) 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 3 Thread -1262048336 (LWP 12529) 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 * 1 Thread -1212716832 (LWP 12520) 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 [Switching to thread 1 (Thread -1212716832 (LWP 12520))]#0 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 #1 0xb7e17cb1 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 [Switching to thread 3 (Thread -1262048336 (LWP 12529))]#0 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 #1 0xb7e180a6 in pthread_cond_signal@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 [Switching to thread 7 (Thread -1280050256 (LWP 12540))]#0 0xb7e1a189 in __lll_mutex_lock_wait () from /lib/tls/libpthread.so.0 #1 0xb7e180a6 in pthread_cond_signal@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0

licq_fp.cpp
Description: Binary data