38 lines
1.2 KiB
XML
38 lines
1.2 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="Semaphore" inherits="Reference" version="4.0">
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<brief_description>
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A synchronization semaphore.
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</brief_description>
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<description>
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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].
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</description>
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<tutorials>
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<link title="Using multiple threads">https://docs.godotengine.org/en/latest/tutorials/threads/using_multiple_threads.html</link>
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</tutorials>
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<methods>
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<method name="post">
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<return type="void">
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</return>
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<description>
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Lowers the [Semaphore], allowing one more thread in.
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</description>
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</method>
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<method name="try_wait">
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<return type="int" enum="Error">
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</return>
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<description>
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Like [method wait], but won't block, so if the value is zero, fails immediately and returns [constant ERR_BUSY]. If non-zero, it returns [constant OK] to report success.
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</description>
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</method>
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<method name="wait">
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<return type="void">
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</return>
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<description>
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Waits for the [Semaphore], if its value is zero, blocks until non-zero.
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</description>
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</method>
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</methods>
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<constants>
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</constants>
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</class>
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