ContinueIndependently (Daemon subroutine): Difference between revisions
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<td>This optional, [[Notation conventions for methods#Named parameters|name allowed]], argument is an object passed to the <var class="term">daemon</var> thread. This object must be deep copyable, as described in: [[Copying objects|"Copying objects"]]. | <td>This optional, [[Notation conventions for methods#Named parameters|name allowed]], argument is an object passed to the <var class="term">daemon</var> thread. This object must be deep copyable, as described in: [[Copying objects|"Copying objects"]]. | ||
</td></tr></table> | </td></tr></table> | ||
==Exceptions== | |||
<var>ContinueIndependently</var> can throw the following exception: | |||
<dl> | |||
<dt><var>[[DaemonLost_class|DaemonLost]]</var> | |||
<dd>If <var class="term">daemon</var> is lost (probably restarted), a <var>DaemonLost</var> exception is thrown. Since <var>ContinueIndependently</var> does not wait for the <var>daemon</var> thread to do anything, a <var>DaemonLost</var> exception indicates that the daemon thread was lost <b><i>before</i></b> <var>ContinueIndependently</var> was invoked. | |||
</dl> | |||
==Usage notes== | ==Usage notes== | ||
Revision as of 21:54, 31 May 2012
Continue processing independently in daemon (Daemon class)
[Introduced in Sirius Mods 8.1]
This method tells a daemon that did a ReturnToMaster Daemon class call to continue processing at the point of the call. Unlike the Continue method, ContinueIndependently returns immediately, thus allowing the thread that issued ContinueIndependently to run in parallel with the daemon thread. Unlike ContinueAsynchronously, this method makes the daemon thread completely independent of the parent thread, so the daeamon is no longer available.
Syntax
daemon:ContinueIndependently[( [Input= object])] Throws DaemonLost, IncorrectDaemonState
Syntax terms
| daemon | A previously defined Daemon object. |
|---|---|
| Input | This optional, name allowed, argument is an object passed to the daemon thread. This object must be deep copyable, as described in: "Copying objects". |
Exceptions
ContinueIndependently can throw the following exception:
- DaemonLost
- If daemon is lost (probably restarted), a DaemonLost exception is thrown. Since ContinueIndependently does not wait for the daemon thread to do anything, a DaemonLost exception indicates that the daemon thread was lost before ContinueIndependently was invoked.
Usage notes
- Issuing ContinueIndependently against a daemon not in a ReturnToMaster wait results in an IncorrectDaemonState exception.
- The Continue and ContinueAsynchronously methods also tell a daemon to continue from a ReturnToMaster wait.
- After a ContinueIndependently (or RunIndependently) method, the daemon object is set to null. This is because the daemon thread runs completely independently of the parent thread once a ContinueIndependently method is invoked.
- No Daemon class mechanism is provided for a parent thread to retrieve the output from an independently running Daemon.
- For more information about independent daemons, see "Asynchronous and Independent daemons".