Not sure if it helps, but I ran this for 3 hours this morning and didn't have any errrors:
go=: 3 : 0 for_i. i. 1e7 do. 2!:0 'date' 2!:0 'sleep .1' 2!:0 'date >/tmp/f1;:' end. ) go'' JVERSION Engine: j701/2011-01-10/11:25 Library: 7.01.088 Platform: Linux 64 Installer: j701a_linux64.sh InstallPath: /home/joebo/j64-701 On Wed, Mar 12, 2014 at 10:08 PM, Raul Miller <[email protected]> wrote: > I'm not sure why that ' > ' is five characters instead of three. Probably > it was specified as 3 characters with spaces surrounding the '>' but that > got interpreted as three spaces followed by '> '. > > In any event, it's just: command string followed by ' > ' followed by > temporary file name. > > Meanwhile, it would have been more useful if it had been '>',tmpfilename,' > ',command -- that way if the command had a redirect in it, it would just > work. As it is, one must do something a little extra to redirect to a file > > Anyways, here's an example of the problem in action: > > |interface error: spawn > |spawn[:0] > 2!:0 'date >/tmp/f1;:' > |interface error > | 2!:0'date >/tmp/f1;:' > ^D > real 121m42.418s > user 71m39.468s > sys 12m58.545s > ~$ ls -lart /tmp > total 8 > drwxr-xr-x 23 root root 4096 Mar 9 14:12 .. > drwxrwxrwt 2 root root 4096 Mar 13 01:19 . > > And, here's an example of successfully redirecting to a file: > > 2!:0 'date >/tmp/f2;:' > > The ;: at the end of the command string terminates the command with the > redirect and follows it with an empty command which does nothing. The > redirect then takes effect on that command (thus 2!:0 returns nothing). > > ~$ cat /tmp/f2 > Thu Mar 13 02:04:09 UTC 2014 > > Anyways, I've got jconsole running under gdb, and I'll see if the C > debugger can tell me anything about the problem. > > Thanks, > > -- > Raul > > > > On Wed, Mar 12, 2014 at 9:27 PM, Joe Bogner <[email protected]> wrote: > >> On Wed, Mar 12, 2014 at 9:16 PM, Joe Bogner <[email protected]> wrote: >> > I can't figure out by looking at it how the tmpnam gets >> > added to the system command. I'm used to seeing popen >> > >> > >> https://github.com/openj/core/blob/18fd23bbdc2f50770eb3047e978cd5e4e3b47039/xh.c#L39 >> > >> >> Scratch that, I figured out how it gets added. It's appending it to >> the end of the pointer. The number 5 still has me confused and the " > >> ". Anyways, I don't think this is helping unless it has something to >> do with 5 and exceeding the number of temporary files or something >> like that. Probably a false trail of thought >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
