#10016 LOW 1.5-sof: os109 -- Icon in Frame did not have session associated with it

[Zarro Boogs per Child]

#10016: os109 -- Icon in Frame did not have session associated with it
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           Reporter:  mikus     |       Owner:  dsd                              
               Type:  defect    |      Status:  new                              
           Priority:  low       |   Milestone:  1.5-software-later               
          Component:  sugar     |     Version:  Development build as of this date
         Resolution:            |    Keywords:                                   
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:            |   Blockedby:                                   
           Blocking:            |  
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Comment(by Quozl):

 I've a different understanding of the race condition now.

 The ''sugar-session'' process is accepting X events for user actions as
 well as D-Bus events.

 The logic that avoids resuming the same activity twice is built on the
 shell's list of active activities: shell._activities[]

 This list is added to when the shell receives a D-Bus NotifyLaunch method
 call event from the activity factory.  (It is also added to when a
 launcher or activity window with an activity id property is created, but
 the NotifyLaunch would normally happen first).

 Now, the activity factory executes in the context of the same ''sugar-
 session'' process ... as a result of the user clicking on an icon.

 The race is between processing the D-Bus NotifyLaunch event and the X
 events from the touchpad buttons.  If the X events arrive before the D-Bus
 event queue is checked, then the same journal entry will be resumed more
 than once.

 The race is only relevant for resumed activities, since these are given
 the same activity id.

-- 
Ticket URL: <http://dev.laptop.org/ticket/10016#comment:9>
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