36 lines
1.7 KiB
XML
36 lines
1.7 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
|
|
<class name="Mutex" inherits="RefCounted" version="4.0">
|
|
<brief_description>
|
|
A synchronization mutex (mutual exclusion).
|
|
</brief_description>
|
|
<description>
|
|
A synchronization mutex (mutual exclusion). This is used to synchronize multiple [Thread]s, and is equivalent to a binary [Semaphore]. It guarantees that only one thread can ever acquire the lock at a time. A mutex can be used to protect a critical section; however, be careful to avoid deadlocks.
|
|
</description>
|
|
<tutorials>
|
|
<link title="Using multiple threads">https://docs.godotengine.org/en/latest/tutorials/performance/using_multiple_threads.html</link>
|
|
</tutorials>
|
|
<methods>
|
|
<method name="lock">
|
|
<return type="void" />
|
|
<description>
|
|
Locks this [Mutex], blocks until it is unlocked by the current owner.
|
|
[b]Note:[/b] This function returns without blocking if the thread already has ownership of the mutex.
|
|
</description>
|
|
</method>
|
|
<method name="try_lock">
|
|
<return type="int" enum="Error" />
|
|
<description>
|
|
Tries locking this [Mutex], but does not block. Returns [constant OK] on success, [constant ERR_BUSY] otherwise.
|
|
[b]Note:[/b] This function returns [constant OK] if the thread already has ownership of the mutex.
|
|
</description>
|
|
</method>
|
|
<method name="unlock">
|
|
<return type="void" />
|
|
<description>
|
|
Unlocks this [Mutex], leaving it to other threads.
|
|
[b]Note:[/b] If a thread called [method lock] or [method try_lock] multiple times while already having ownership of the mutex, it must also call [method unlock] the same number of times in order to unlock it correctly.
|
|
</description>
|
|
</method>
|
|
</methods>
|
|
</class>
|