On 11/1/06, Matt Helsley <[EMAIL PROTECTED]> wrote: > On Wed, 2006-11-01 at 23:42 +0530, Srivatsa Vaddagiri wrote: > > On Wed, Nov 01, 2006 at 12:30:13PM +0300, Pavel Emelianov wrote: > > <snip> > > > > > - Support movement of all threads of a process from one group > > > > to another atomically? > > > > > > I propose such a solution: if a user asks to move /proc/<pid> > > > then move the whole task with threads. > > > If user asks to move /proc/<pid>/task/<tid> then move just > > > a single thread. > > > > > > What do you think? > > > > Isnt /proc/<pid> listed also in /proc/<pid>/task/<tid>? > > > > For ex: > > > > # ls /proc/2906/task > > 2906 2907 2908 2909 > > > > 2906 is the main thread which created the remaining threads. > > > > This would lead to an ambiguity when user does something like below: > > > > echo 2906 > /some_res_file_system/some_new_group > > > > Is he intending to move just the main thread, 2906, to the new group or > > all the threads? It could be either. > > > > This needs some more thought ... > > I thought the idea was to take in a proc path instead of a single > number. You could then distinguish between the whole thread group and > individual threads by parsing the string. You'd move a single thread if > you find both the tgid and the tid. If you only get a tgid you'd move > the whole thread group. So: > > <pid> -> if it's a thread group leader move the whole > thread group, otherwise just move the thread > /proc/<tgid> -> move the whole thread group > /proc/<tgid>/task/<tid> -> move the thread > > > Alternatives that come to mind are: > > 1. Read a flag with the pid > 2. Use a special file which expects only thread groups as input
I think that having a "tasks" file and a "threads" file in each container directory would be a clean way to handle it: "tasks" : read/write complete process members "threads" : read/write individual thread members Paul ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ ckrm-tech mailing list https://lists.sourceforge.net/lists/listinfo/ckrm-tech
