1. task function request
- Posted by useless Sep 09, 2009
- 1137 views
I have a use for task_talkback(object stuff) and i request it be added to Euphoria asap.
It would allow a task to provide more information about it's continuing operation than task_status() provides. For instance, percent completed, speed of something, etc... basically the same stuff provided by global vars and return {}. Returning from an uncompleted task or using global vars will mess things up in a tasking environment.
At the moment, i would use it in http.e and news5.ew.
useless
2. Re: task function request
- Posted by ryanj Sep 09, 2009
- 1115 views
Would this do what you need?
constant tID = 1, tData = 2 sequence taskvars = {{},{}} export function task_get_var(atom taskid) atom idx idx = find(taskid, taskvars[tID]) if idx > 0 then return taskvars[tData][idx] else return 0 end if end function export procedure task_set_var(atom taskid, object taskvar) atom idx idx = find(taskid, taskvars[tID]) if idx > 0 then taskvars[tData][idx] = taskvar end if end procedure
3. Re: task function request
- Posted by useless Sep 09, 2009
- 1109 views
Ryanj posted code...
i tested it...
it didn't run right... but it's also late at night, and he did help even if the code didn't run. I came up with this:
sequence taskvars_ids = {} sequence taskvars_datas = {} export function task_get_var(atom taskid) object taskvar atom idx idx = find(taskid, taskvars_ids) if idx > 0 then return taskvars_datas[idx] else return 0 end if end function export procedure task_set_var(atom taskid, object taskdata) atom idx idx = find(taskid, taskvars_ids) if idx = 0 then taskvars_ids &= taskid taskvars_datas &= {taskdata} end if if idx > 0 then taskvars_datas[idx] = taskdata end if end procedure
I added it to my task.e. It's running using news4.ex and a new unreleased version of http.e. News4.ex looks really nice with a percent of download ticker running for each site. News5.ex no longer crashes from http.e being terminated by the OS, and it also has a download percent ticker.
Thank you lots, Ry!
useless
4. Re: task function request
- Posted by ryanj Sep 09, 2009
- 1058 views
LOL! My code was written stupidly and hurriedly. I totally forgot to use "&=". I shouldn't be writing code when i'm this sleepy...oh well.
5. Re: task function request
- Posted by useless Sep 09, 2009
- 1104 views
Ry asked for a screen shot, here it is:
http://imgbin.org/index.php?page=image&id=759
useless
6. Re: task function request
- Posted by useless Sep 10, 2009
- 1065 views
The tasks code posted in this thread has been improved further. It's now dual path to/from each task, and has overwriting flags as shown, plus non-overwriting queueing message passing. Wildcard _set and _get to come, for easier bulk task msg spamming between tasks.
<task1> mommy, task6 is spamming me!
While one would think the single thread there would work fine, in practice it doesn't work reliably, because the bidirectional single msg "channel" for each thread can easily get overwritten before it's read. Having a dedicated channel to each task, and one from each task works better.
Derek has a link to the most recent bleeding edge code for comments and feedback. So does Ry and Unk. You may apply as well, but if you do not understand "to" or "will change, in flux", please don't.
useless
7. Re: task function request
- Posted by ryanj Sep 10, 2009
- 1002 views
I just looked at the code. I like the idea of having both flags and queues.
