On 09.05.2008, at 20:29, Vlad Seryakov wrote: > So what you need is the ability to create "lightweight" Tcl thread > with > minimum commands, but with couple "important" commands to access > special > "global state" or ability to submit/retrieve data from "global state". > Is this correct?
Yes. The lightweight state should be light (a wonder!) in terms it is private, easily created, easily destroyed and small in memory footprint. The closest "thing" in the Tcl universe would be a child interp ([interp create]). > > > But that "monster" thread, how do you execute in it? > Using ns_proxy or messaging, or some other way? Well messaging is first that comes to mind. Threading extension already does that. The gotcha's are mostly upvars and uplevels :-( > > > I guess you create regular pthread, call Tcl_CreateInterp, > register several command and execute your Tcl script. > Why do you think it is not generic enough? Well, kind of :-) It is like: I guess you go sit in the rocket, turn on the boosters and fly to moon! Nothing simpler that that. Unfortunately. I'm not NASA! Our app consist of roghly 350.000 lines of Tcl code and loads about 20+ external modules, all containing internal state. The command set is 500+ top-level commands and they all depend on the internal state. What MIGHT work is kind of this: create some numbers of fully loaded interps, each sitting in its own thread. A compute-farm, so to say. Then every other thread just creates a slave interp in one of those and runs all its scripts in his private slave in one of those parked threads in the compute-farm, using some kind of message passing. The slaves have all the commands aliased into the main one. Not sure what would happen with uplevels and upvars here (need to think) but this is roughly what I'm contemplating about now. So when a thread exits, its thin-slave is just deleted completely. And created it is also fast. Just alias all commands from the master. Not sure about the global variables... this is still open. ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ naviserver-devel mailing list naviserver-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/naviserver-devel
