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From "Alan Conway (JIRA)" <j...@apache.org>
Subject [jira] [Created] (PROTON-1440) pn_connection_wake to return bool status
Date Wed, 15 Mar 2017 21:59:41 GMT
Alan Conway created PROTON-1440:
-----------------------------------

             Summary: pn_connection_wake to return bool status
                 Key: PROTON-1440
                 URL: https://issues.apache.org/jira/browse/PROTON-1440
             Project: Qpid Proton
          Issue Type: Improvement
          Components: proton-c
    Affects Versions: 0.17.0
            Reporter: Alan Conway
            Assignee: Alan Conway
             Fix For: 0.18.0


pn_connection_wake() allows any thread to send a PN_CONNECTION_WAKE event to a proactor-managed
connection. Currently it does not return any value, and the application must ensure it is
not called after the PN_TRANSPORT_CLOSED event is processed for that connection.

This is tricky for the application to synchronize and inconsistent with other pn_connection_
functions. If refcounts are used to keep a pn_connection_t in memory after the TRANSPORT_CLOSED,
then calling wake() is an error even though the pn_connection_t is valid.

Change wake to be safe as long as the pn_connection_t is valid. It returns true if the connection
will be woken, false if it is too late.



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