Gilles Chanteperdrix wrote:
Jeff Webb wrote:
Gilles Chanteperdrix wrote:
After the first Ctrl-C that does not work, could you try and attach gdb
to see where the threads are stopped ?
I tried to do this, but was unable to determine the stopping point
using gdb.
type simply: "info threads"
then change thread to the main thread with "thread x", where x is the
lowest thread id as listed by "info threads"
then type: "backtrace"
If I try to connect to the process after I press the ctrl-c one time, I get:
# gdb --pid=2660
Attaching to process 2660
warning: The current VSYSCALL page code requires an existing excuitable. [sic]
Use "add-symbol-file-from-memory" to load the VSYSCALL page by hand
Then the whole machine locks up, and I am forced to reboot.
I am able to connect before I press ctrl-c:
(gdb) thread 1
[Switching to thread 1 (Thread -1208273216 (LWP 2634))]#0 0xffffe410 in ?? ()
(gdb) backtrace
#0 0xffffe410 in ?? ()
#1 0xbfd96294 in ?? ()
#2 0x00000000 in ?? ()
(gdb) c
Continuing.
Then I type ctrl-c, and the machine locks up, as before. The machine does not
lock up, if I am not connected via gdb.
/proc/xenomai/sched gives an information on the status that is easier to
understand.
Before pressing ctrl-c:
$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 2641 0 0 0 X switchtest
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
0 2643 1 0 0 X rtup0-7
0 2644 1 0 0 X rtup0-8
0 2645 1 0 0 X rtup_ufpp0-9
0 2646 1 0 0 X rtup_ufpp0-10
0 2647 1 0 0 W rtus0-11
0 2648 1 0 0 W rtus0-12
0 2649 1 0 0 W rtus_ufps0-13
0 2650 1 0 0 W rtus_ufps0-14
0 2651 1 0 0 X rtuo0-15
0 2652 1 0 0 X rtuo0-16
0 2653 1 0 0 X rtuo_ufpp0-17
0 2654 1 0 0 X rtuo_ufpp0-18
0 2655 1 0 0 X rtuo_ufps0-19
0 2656 1 0 0 X rtuo_ufps0-20
0 2657 1 0 0 X rtuo_ufpp_ufps0-21
0 2658 1 0 0 X rtuo_ufpp_ufps0-22
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2660 1 0 0 X rtup1-7
1 2661 1 0 0 X rtup1-8
1 2662 1 0 0 X rtup_ufpp1-9
1 2663 1 0 0 X rtup_ufpp1-10
1 2664 1 0 0 W rtus1-11
1 2665 1 0 0 W rtus1-12
1 2666 1 0 0 W rtus_ufps1-13
1 2667 1 0 0 W rtus_ufps1-14
1 2668 1 0 0 W rtuo1-15
1 2669 1 0 0 W rtuo1-16
1 2670 1 0 0 W rtuo_ufpp1-17
1 2671 1 0 0 W rtuo_ufpp1-18
1 2672 1 0 0 W rtuo_ufps1-19
1 2673 1 0 0 W rtuo_ufps1-20
1 2674 1 0 0 W rtuo_ufpp_ufps1-21
1 2675 1 0 0 W rtuo_ufpp_ufps1-22
After pressing ctrl-c once:
$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 2641 0 0 0 X switchtest
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
0 2647 1 0 0 R rtus0-11
0 2648 1 0 0 R rtus0-12
0 2649 1 0 0 R rtus_ufps0-13
0 2650 1 0 0 R rtus_ufps0-14
0 2651 1 0 0 R rtuo0-15
0 2652 1 0 0 R rtuo0-16
0 2653 1 0 0 R rtuo_ufpp0-17
0 2654 1 0 0 R rtuo_ufpp0-18
0 2655 1 0 0 R rtuo_ufps0-19
0 2656 1 0 0 R rtuo_ufps0-20
0 2657 1 0 0 R rtuo_ufpp_ufps0-21
0 2658 1 0 0 R rtuo_ufpp_ufps0-22
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2660 1 0 0 X rtup1-7
1 2661 1 0 0 X rtup1-8
1 2662 1 0 0 X rtup_ufpp1-9
1 2663 1 0 0 X rtup_ufpp1-10
1 2664 1 0 0 W rtus1-11
1 2665 1 0 0 W rtus1-12
1 2666 1 0 0 W rtus_ufps1-13
1 2667 1 0 0 W rtus_ufps1-14
1 2668 1 0 0 X rtuo1-15
1 2669 1 0 0 X rtuo1-16
1 2670 1 0 0 X rtuo_ufpp1-17
1 2671 1 0 0 X rtuo_ufpp1-18
1 2672 1 0 0 X rtuo_ufps1-19
1 2673 1 0 0 X rtuo_ufps1-20
1 2674 1 0 0 X rtuo_ufpp_ufps1-21
1 2675 1 0 0 X rtuo_ufpp_ufps1-22
After pressing ctrl-c twice:
[EMAIL PROTECTED]:~$ cat /proc/xenomai/sched
CPU PID PRI PERIOD TIMEOUT STAT NAME
0 0 -1 0 0 R ROOT/0
1 0 -1 0 0 R ROOT/1
0 0 1 0 0 W rtk1/0
0 0 1 0 0 W rtk2/0
0 0 1 0 0 Wf rtk3/0
0 0 1 0 0 Wf rtk4/0
0 0 1 0 0 Wf rtk5/0
0 0 1 0 0 Wf rtk6/0
1 0 1 0 0 W rtk1/1
1 0 1 0 0 W rtk2/1
1 0 1 0 0 Wf rtk3/1
1 0 1 0 0 Wf rtk4/1
1 0 1 0 0 Wf rtk5/1
1 0 1 0 0 Wf rtk6/1
1 2665 1 0 0 R rtus1-12
1 2666 1 0 0 R rtus_ufps1-13
1 2667 1 0 0 R rtus_ufps1-14
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