How to get instance of a specific running process in Elixir?











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In elixir, if I invoke spawn to create a process but didn't store the process instance to a variable, how can I retrieve the instance of that PID again?



I know I can use Process.list() which will return all the processes running in the current node but is there a way to retrieve the instance of a specific PID?






elixir







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  • 1




    The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
    – Justin Wood
    yesterday












  • so if I did not name my PID, then there is no way to retrieve it?
    – Supui Lam
    yesterday










  • If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
    – Sheharyar
    yesterday















up vote
0
down vote

favorite












In elixir, if I invoke spawn to create a process but didn't store the process instance to a variable, how can I retrieve the instance of that PID again?



I know I can use Process.list() which will return all the processes running in the current node but is there a way to retrieve the instance of a specific PID?






elixir







share|improve this question


















  • 1




    The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
    – Justin Wood
    yesterday












  • so if I did not name my PID, then there is no way to retrieve it?
    – Supui Lam
    yesterday










  • If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
    – Sheharyar
    yesterday













up vote
0
down vote

favorite









up vote
0
down vote

favorite











In elixir, if I invoke spawn to create a process but didn't store the process instance to a variable, how can I retrieve the instance of that PID again?



I know I can use Process.list() which will return all the processes running in the current node but is there a way to retrieve the instance of a specific PID?






elixir







share|improve this question













In elixir, if I invoke spawn to create a process but didn't store the process instance to a variable, how can I retrieve the instance of that PID again?



I know I can use Process.list() which will return all the processes running in the current node but is there a way to retrieve the instance of a specific PID?






elixir




elixir






share|improve this question













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asked yesterday









Supui Lam

33




33








  • 1




    The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
    – Justin Wood
    yesterday












  • so if I did not name my PID, then there is no way to retrieve it?
    – Supui Lam
    yesterday










  • If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
    – Sheharyar
    yesterday














  • 1




    The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
    – Justin Wood
    yesterday












  • so if I did not name my PID, then there is no way to retrieve it?
    – Supui Lam
    yesterday










  • If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
    – Sheharyar
    yesterday








1




1




The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
– Justin Wood
yesterday






The easiest way would be to either store the PID for future use, or name the process so you can reference it by that unique name (unique within a given node. Unless you registered globally, then it is unique across the entire erlang network).
– Justin Wood
yesterday














so if I did not name my PID, then there is no way to retrieve it?
– Supui Lam
yesterday




so if I did not name my PID, then there is no way to retrieve it?
– Supui Lam
yesterday












If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
– Sheharyar
yesterday




If you know the pid integer values, you can use pid/3 to get the instance. E.g. pid(0, 123, 4)
– Sheharyar
yesterday












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The easiest way would be set a name for the process and retrieve it using Process.whereis/1.






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    The easiest way would be set a name for the process and retrieve it using Process.whereis/1.






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      The easiest way would be set a name for the process and retrieve it using Process.whereis/1.






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        The easiest way would be set a name for the process and retrieve it using Process.whereis/1.






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        The easiest way would be set a name for the process and retrieve it using Process.whereis/1.







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        Marcos Tapajós

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