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<?xml version="1.0" encoding="UTF-8" ?>
<class name="Semaphore" inherits="Reference" category="Core" 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/latest/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>
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