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5884090
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2011-05-04T13:22:10.827
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2016-06-06T15:30:49.390
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2016-06-06T15:30:49.390
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2
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54
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You have two easy alternatives, use <code>timer:send_interval/2</code> or <code>erlang:send_after/3</code>. <code>send_interval</code> is easier to setup, while <code>send_after</code> (when used in the Erlang module) is more reliable since it is a built-in function, see the <a href="http://www.erlang.org/doc/efficiency_guide/commoncaveats.html#id60206" rel="noreferrer">Efficiency Guide</a>. Using <code>send_after</code> also ensures that the <code>gen_server</code> process is not overloaded. If you were using the <code>send_interval</code> function you would get a message regardless if the process can keep up or not. With <code>send_after</code> being called just before the return in <code>handle_info</code> you only schedule a new message once you handled the previous one. If you want more accurate time tracking you can still schedule a <code>send_after</code> with the time set dynamically to something lower than <code>?INTERVAL</code> (or even 0) to catch up. I would recommend something along the following lines in your <code>gen_server</code>: <pre><code>-define(INTERVAL, 60000). % One minute init(Args) -> ... % Start first timer erlang:send_after(?INTERVAL, self(), trigger), ... handle_info(trigger, State) -> ... % Do the action ... % Start new timer erlang:send_after(?INTERVAL, self(), trigger), ... </code></pre> Instead of <code>trigger</code> you could send something with a state if it is needed, like <code>{trigger, Count}</code> or something.
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1. POHow to perform actions periodically with Erlang's gen_server?
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1. USAdam Lindberg
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1. USAdam Lindberg
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1. COThat's great! It's exactly what I'm doing at the moment. Thanks!
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 USPiotr Usewicz

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