Messages in this thread |  | | Date | Mon, 16 May 2011 14:11:16 +0200 | | From | Jan Kratochvil <> | | Subject | Re: waitpid(WNOHANG) should report SIGCHLD-notified signals [Re: [PATCH 09/11] job control: reorganize wait_task_stopped()] |
| |
Hi Tejun,
On Mon, 16 May 2011 11:13:18 +0200, Tejun Heo wrote: > On Sun, May 15, 2011 at 07:47:22PM +0200, Jan Kratochvil wrote: > > If the debugger wants to be single-threaded ("poll() model", not "threads > > model") and it wants to communicate with user and examine debuggee symbols and > > memory data it cannot use sleeping wait. GDB is single-threaded and it > > supports `set target-async 1': info '(gdb)Background Execution' > > I don't think target-async is necessarily related. It doesn't really > matter whether the execution per-se is async or not. The ptracer can > be a separate thread
It cannot as various GDB-supported platforms do not support threads properly. And you want to have a common codebase to get it will supported.
Besides that it is a matter of coding style, I perfer "poll() model" even on threads-supporting GNU/Linux.
> Anyways, I would recommend using sleeping wait(2)'s for ptrace event > tracking.
You cannot as I described above.
Thanks, Jan
|  |