[PATCH 2/2] Avoid step-over infinite loop in GDBServer

[Pedro Alves]

On 11/29/2016 12:07 PM, Antoine Tremblay wrote:
>  - GDBServer stops on instruction A in thread 1.
>  - Deletes thread 1 single-step breakpoint.
>  - Starts a step-over of thread 1 to step-over the thread 2 breakpoint.
>  - GDBServer finishes a step-over and is at instruction B.
>  - GDBserver starts a step-over of thread 1 to step-over the thread 3
>    breakpoint at instruction B.
>  - GDBServer stops on instuction A in thread 1.
>  - GDBServer is now in an infinite loop.

This sounds to me very much like a fairness issue.  There were
three threads stopped that needed to move past a breakpoint, but
gdbserver always picks thread 1.  Why?

Thanks,
Pedro Alves