virtualx-engine/doc/classes/Thread.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="Thread" inherits="Reference" category="Core" version="3.2">
	<brief_description>
		A unit of execution in a process.
	</brief_description>
	<description>
		A unit of execution in a process. Can run methods on [Object]s simultaneously. The use of synchronization via [Mutex], [Semaphore] is advised if working with shared objects.
	</description>
	<tutorials>
	</tutorials>
	<methods>
		<method name="get_id" qualifiers="const">
			<return type="String">
			</return>
			<description>
				Returns the current [Thread]s id, uniquely identifying it among all threads.
			</description>
		</method>
		<method name="is_active" qualifiers="const">
			<return type="bool">
			</return>
			<description>
				Returns true if this [Thread] is currently active. An active [Thread] cannot start work on a new method but can be joined with [method wait_to_finish].
			</description>
		</method>
		<method name="start">
			<return type="int" enum="Error">
			</return>
			<argument index="0" name="instance" type="Object">
			</argument>
			<argument index="1" name="method" type="String">
			</argument>
			<argument index="2" name="userdata" type="Variant" default="null">
			</argument>
			<argument index="3" name="priority" type="int" enum="Thread.Priority" default="1">
			</argument>
			<description>
				Starts a new [Thread] that runs "method" on object "instance" with "userdata" passed as an argument. The "priority" of the [Thread] can be changed by passing a PRIORITY_* enum.
				Returns OK on success, or ERR_CANT_CREATE on failure.
			</description>
		</method>
		<method name="wait_to_finish">
			<return type="Variant">
			</return>
			<description>
				Joins the [Thread] and waits for it to finish. Returns what the method called returned.
			</description>
		</method>
	</methods>
	<constants>
		<constant name="PRIORITY_LOW" value="0" enum="Priority">
		</constant>
		<constant name="PRIORITY_NORMAL" value="1" enum="Priority">
		</constant>
		<constant name="PRIORITY_HIGH" value="2" enum="Priority">
		</constant>
	</constants>
</class>