35 lines
641 B
GDScript
35 lines
641 B
GDScript
class_name ReadWriteLock
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var _w_lock : Lock
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var _num_r_lock : Lock
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var _num_r : int
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func _init():
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self._w_lock = Lock.new()
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self._num_r_lock = Lock.new()
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self._num_r = 0
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func r_lock():
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self._num_r_lock.lock()
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self._num_r += 1
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if self._num_r == 1:
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self._w_lock.lock()
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self._num_r_lock.unlock()
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func r_unlock():
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if self._num_r <= 0:
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LockNotAquiredError.new(
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"Read-Write-Lock was released but nobody aquired it!").throw()
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return
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self._num_r_lock.lock()
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self._num_r -= 1
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if self._num_r == 0:
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self._w_lock.unlock()
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self._num_r_lock.unlock()
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func w_lock():
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self._w_lock.lock()
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func w_unlock():
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self._w_lock.unlock()
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