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https://issues.apache.org/jira/browse/PROTON-1440?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928281#comment-15928281
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Andrew Stitcher commented on PROTON-1440:
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Oh, good point about the lack of thread safety. Shame!
It works for me, because I'm effectively only running a single thread at thte
moment.
> 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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