[Qt-interest] Queued connection execution order

[Atlant Schmidt]

Olivier:

  As I understand it, Queued Connections are capable of signaling
  (or invoking action) from task-to-task; this implies the existence
  of a network or its equivalent. And while today, the tasks are all
  running on the same system so the “network” is minimalist and
  very deterministic, if that restriction (to the “same system”) were
  ever lifted, then one couldn’t easily guarantee the arrival order of
  signals/action invocations at the target system.

  Hence the current restriction.

                                                           Atlant

From: qt-interest-bounces+aschmidt=dekaresearch.com at qt.nokia.com [mailto:qt-interest-bounces+aschmidt=dekaresearch.com at qt.nokia.com] On Behalf Of BOUCARD Olivier
Sent: Monday, September 12, 2011 04:55
To: Qt-interest
Subject: [Qt-interest] Queued connection execution order

Hi,

As it is not stated clearly in the Qt documentation, or I do not find it.
Could someone can confirm that I cannot rely on the execution order of queued connected QMetaObject::invokeMethod?
In other word, I have an object A and B which call an object C, which lives in another thread, through QMetaObject::invokeMethod with Qt::AutoConnection.
If A call C before B, it is no guarantee that C receive the A's call before the B's call?

Thank you.

Olivier.


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