godot/doc/classes/Semaphore.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="Semaphore" inherits="Reference" version="3.2">
	<brief_description>
		A synchronization semaphore.
	</brief_description>
	<description>
		A synchronization semaphore which can be used to synchronize multiple [Thread]s. Initialized to zero on creation. Be careful to avoid deadlocks. For a binary version, see [Mutex].
	</description>
	<tutorials>
		<link>https://docs.godotengine.org/en/3.2/tutorials/threads/using_multiple_threads.html</link>
	</tutorials>
	<methods>
		<method name="post">
			<return type="int" enum="Error">
			</return>
			<description>
				Lowers the [Semaphore], allowing one more thread in. Returns [constant OK] on success, [constant ERR_BUSY] otherwise.
			</description>
		</method>
		<method name="wait">
			<return type="int" enum="Error">
			</return>
			<description>
				Tries to wait for the [Semaphore], if its value is zero, blocks until non-zero. Returns [constant OK] on success, [constant ERR_BUSY] otherwise.
			</description>
		</method>
	</methods>
	<constants>
	</constants>
</class>