[jira] [Updated] (PROTON-2027) Proactor connection wake after memory freed when using pn_proactor_disconnect().

2019-04-11 Thread Robbie Gemmell (JIRA)


 [ 
https://issues.apache.org/jira/browse/PROTON-2027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Robbie Gemmell updated PROTON-2027:
---
Fix Version/s: proton-c-0.27.1

> Proactor connection wake after memory freed when using 
> pn_proactor_disconnect().
> 
>
> Key: PROTON-2027
> URL: https://issues.apache.org/jira/browse/PROTON-2027
> Project: Qpid Proton
>  Issue Type: Bug
>  Components: proton-c
>Affects Versions: proton-c-0.27.0
>Reporter: Cliff Jansen
>Assignee: Cliff Jansen
>Priority: Major
> Fix For: proton-c-0.27.1, proton-c-0.28.0
>
>
> The normal cleanup procedure for epoll and win_iocp proactors waits for all 
> async activity to complete before freeing memory.
> pn_proactor_disconnect can't actually force a close so it launches a separate 
> async activity piggy-backed on the internal wake mechanism of any connections 
> to be closed.
> If the disconnect is happening at the same time as a separate thread doing a 
> normal close, a new wake can result after concluding there are none left.
> The solution is to mark the connection as "already awake" before entering the 
> cleanup code so new wakes are no-ops.  The libuv proactor doesn't need this 
> as the disconnect function is managed within libuv and never competes with 
> the normal close operation.



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[jira] [Updated] (PROTON-2027) Proactor connection wake after memory freed when using pn_proactor_disconnect().

2019-04-08 Thread Cliff Jansen (JIRA)


 [ 
https://issues.apache.org/jira/browse/PROTON-2027?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Cliff Jansen updated PROTON-2027:
-
Affects Version/s: (was: proton-j-0.32.0)
   proton-c-0.27.0

> Proactor connection wake after memory freed when using 
> pn_proactor_disconnect().
> 
>
> Key: PROTON-2027
> URL: https://issues.apache.org/jira/browse/PROTON-2027
> Project: Qpid Proton
>  Issue Type: Bug
>  Components: proton-c
>Affects Versions: proton-c-0.27.0
>Reporter: Cliff Jansen
>Assignee: Cliff Jansen
>Priority: Major
>
> The normal cleanup procedure for epoll and win_iocp proactors waits for all 
> async activity to complete before freeing memory.
> pn_proactor_disconnect can't actually force a close so it launches a separate 
> async activity piggy-backed on the internal wake mechanism of any connections 
> to be closed.
> If the disconnect is happening at the same time as a separate thread doing a 
> normal close, a new wake can result after concluding there are none left.
> The solution is to mark the connection as "already awake" before entering the 
> cleanup code so new wakes are no-ops.  The libuv proactor doesn't need this 
> as the disconnect function is managed within libuv and never competes with 
> the normal close operation.



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