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| Skully |
 Posted: Fri May 13, 2011 9:02 am |
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Joined: 21 May 2007
Posts: 8
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Hi,
i have processes which execute some code.
I would like to be able to pause each process and let them continue their work if needed.
A bonus would be to give each process a time-interval, for that time the process can execute something.
Some interesting things ive found in http://ftp.csd.uu.se/papers/masters-theses/0178-ekstrom.pdf but thats without the code.
In Java for example i would use something like thread.sleep(). I have seen some suspend method for erlang but with a warning to only use it for debugging.
Any tipps how to accomplish something like that in erlang? |
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| flodis |
| Posted: Fri May 13, 2011 12:40 pm |
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User
Joined: 09 Jul 2008
Posts: 27
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Check out the sleep function in the timer module, it probably does what you want.
http://www.erlang.org/doc/man/timer.html#sleep-1
However, it sounds that you need to enter a receive loop for your processes that will continue work when a message is received.
I am not 100% sure what you want, but you might want to consider this:
Each process do work in a loop
Before entering the loop, you take the start time
In the beginning of each loop iteration, you mesure if X time has passed (check timer:now_diff/2)
If time X has passed, you enter a receive loop that will wait until a message to proceed is received. (Then you take start time again and repeat the this process) |
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| anmolsingh008 |
| Posted: Fri Jul 08, 2011 5:59 am |
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Joined: 05 Jul 2011
Posts: 2
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Hi
You can use erlang:send_after/3 to send a signal to your paused process to resume.
Something like below:
start()->
Pid = spawn(?MODUKE, process, []),
erlang:send_after(5000, Pid, resume).
process()->
receive
Anything -> resume
after 10000 -> timeout
end. |
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