New (Daemon constructor)

Create a new Daemon (Daemon class)

New is a member of the Daemon class

This method creates a new Daemon object instance. It has two, optional, arguments.

Syntax

%daemon = [%(Daemon):]New[( [CopyGlobals= boolean], [Transactional= boolean], - [OpenAll= boolean])] Throws MaxDaemExceeded, NoFreeDaemons, DaemonLost

Syntax terms

%daem

A previously defined Daemon object.

CopyGlobals=bool

An optional, NameRequired parameter whose value is a Boolean enumeration: valid values are True and False. The default is False: do not copy the existing global variable information from the master thread; use default GTBL-creation settings for the daemon. If set to True:

• The GTBL server table is set to the same size on the daemon as it is on the master thread.
• The GTBLHASH and GTBLPCT parameters on the daemon thread are set to the same value as on the master thread.
• Only unstructured globals (globals created by $setg or $getg) and Perm Global Images in the master thread GTBL are copied to the daemon (Global Foundsets/Lists, Global Screens, and any Temp Global items are not copied).

Transactional=bool

An optional, NameRequired parameter whose value is a Boolean enumeration: valid values are True and False. If set to True, the daemon is transactional (see Daemon class), and the master and daemon threads share a single updating transaction. If set to False, the default, the daemon is non-transactional. This parameter is new as of Sirius Mods Version 6.8.

Exceptions

This subroutine can throw the following exceptions:

NoFreeDaemons

If there are no daemon threads available to service the object, a NoFreeDaemons exception is thrown. This exception will only be thrown in Sirius Mods Version 7.2 and later.

Usage notes

• The New method not only creates a Daemon object in the user tables, but it also finds a free sdaemon thread and dedicates it to the issuing user. If no sdaemon threads are available, the request is cancelled.
• The number of daemons allowed per master thread is limited by the MAXDAEM system parameter, whose default value is 1.
• If you specify CopyGlobals=True, and if there is insufficient server space (say, if daemons start out with very big tables, except for GTBL, and the master has a very big GTBL), the daemon fails during initialization.

See also

Daemon class	List of Daemon methods	Daemon methods syntax
Notation conventions for methods