| |
two of your threads terminate shortly after being started
> int speed_target_task (int argc, char *argv[])
> {
> return 0;
> } // end of speed_target_task ()
> int right_control_task (int argc, char *argv[])
> {
> // dummy code
> int count = 0;
>
> for (count = 255; count > 100; count--)
> {
> motor_c_speed (count);
> msleep (100);
> }
>
> return 0;
> } // end of right_control_task ()
as far as I know, legOS provides no functionality for determining whether or
not a thread is alive or not. You need to keep track of this yourself (e.g.
using a variable/flag that gets set when the thread dies)
Another option is to just put an infinite loop in all threads, so that they
never terminate themselves. something like while(1) { /* some code */
msleep(100); }
-al
"mike mcfarlane" <mcfarlane_mike@hotmail.com> wrote in message
news:Gq0uEC.99p@lugnet.com...
> Thanks Albert
>
> > If you kill a thread, make sure it's still a valid thread (i.e. • still
> > running). undefined behavior will result from killing an invalid thread.
>
> How do I
> check this? There are no other tasks that can kill threads apart from this
> one. I also checked
> process IDs after creation and before killing.
>
>
> Best regards, mike
|
|
Message has 1 Reply:
 | | Re: threads
|
| Albert (...) yea, I see what you are getting at. I am sure that I was hitting the bumper while the threads were still alive, but I will check again. I think this also points out some of the dangers of just dumping in some poorly thought out dummy (...) (22 years ago, 17-Jan-02, to lugnet.robotics.rcx.legos)
|
Message is in Reply To:
| | Re: threads
|
| Thanks Albert (...) still (...) How do I check this? There are no other tasks that can kill threads apart from this one. I also checked process IDs after creation and before killing. Best regards, mike (22 years ago, 16-Jan-02, to lugnet.robotics.rcx.legos)
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