I am cross posting this to dbus and connman. I have an issue where I am trying
to make a call to connman using dbus and I get a crash in dbus.
I have a class that makes various connman calls, and also is set up to receive
messages asynchronously. So, In my class, I run a new thread that it's only
purpose is to create a g_main_loop, then run it, the main part of the class is
called when the user wants to initiate various events (for example a wireless
scan), and to respond to connman messages on dbus (scan complete).
I have a problem though that when I issue any connman calls after I've
initiated g_main_loop_run I get a crash. If I issue any calls (for example
GetProperties, Scan...), before I initiate the main loop, it functions just
fine. I don't have much of a stack trace to go on, but this is all I've got
at this point:
#0 0xb7d71114 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#1 0xb7d6fbe7 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#2 0xb7d6fc5b in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#3 0xb7d6ee47 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#4 0xb7d6f727 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#5 0xb7d55803 in ?? () from /lib/i386-linux-gnu/libdbus-1.so.3
#6 0xb7d563b2 in dbus_connection_get_dispatch_status () from
/lib/i386-linux-gnu/libdbus-1.so.3
#7 0xb7d9df58 in ?? () from /usr/lib/i386-linux-gnu/libdbus-glib-1.so.2
#8 0xb7c339b3 in g_main_context_prepare () from
/lib/i386-linux-gnu/libglib-2.0.so.0
#9 0xb7c342df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb7c3476b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0x08051373 in NetworkOjbect::NetworkLoop () at NetworkOjbect.cpp:1054
#12 0xb7ad0f70 in start_thread (arg=0xb74ffb40) at pthread_create.c:312
#13 0xb7a0770e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
The entire function for NetworkLoop is as follows (again it's started in its
own thread):
int NetworkOjbect::NetworkLoop(size_t)
{
GMainLoop *pMainNetworkLoop;
pMainNetworkLoop = g_main_loop_new(NULL, 0);
if (!pMainNetworkLoop)
{
Trace("Could not start main network loop\n");
exit(-1);
}
g_main_loop_run(pMainNetworkLoop);
return(0);
}
Is there something with my logic in running the main loop in its own thread?
Is there a better way to debug this?
Thanks for your input.
Tom
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