67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
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# Generic Locks. These are only virtual. You will need to check for the lock to
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# ignore processing depending on the lockName.
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# * Locks().Lock("lockName") : creates virtual lock
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# * Locks().IsLocked("lockName") : returns true if locked
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# * Locks().Unlock("lockName") : return true if existed & removed
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import util
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class Locks(object):
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def __init__(self):
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self.locks = {}
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self.oneTimeLocks = {}
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def lock(self, name):
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self.locks[name] = (self.locks.get(name) or 0) + 1
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util.DEBUG_LOG("Lock {0}, total={0}".format(name, self.locks[name]))
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def lockOnce(self, name):
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util.DEBUG_LOG("Locking once {0}".format(name))
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self.oneTimeLocks[name] = True
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def unlock(self, name, forceUnlock=False):
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oneTime = False
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if name in self.oneTimeLocks:
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del self.oneTimeLocks[name]
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oneTime = True
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normal = (self.locks.get(name) or 0) > 0
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if normal:
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if forceUnlock:
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self.locks[name] = 0
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else:
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self.locks[name] -= 1
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if self.locks[name] <= 0:
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del self.locks[name]
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else:
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normal = False
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unlocked = (normal or oneTime)
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util.DEBUG_LOG("Unlock {0}, total={1}, unlocked={2}".format(name, self.locks.get(name) or 0, unlocked))
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return unlocked
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def isLocked(self, name):
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return name in self.oneTimeLocks or name in self.locks
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# return (self.oneTimeLocks.Delete(name) or self.locks.DoesExist(name))
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# lock helpers
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def disableBackButton():
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LOCKS.lock("BackButton")
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def enableBackButton():
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LOCKS.unlock("BackButton", True)
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def disableRemoteControl():
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LOCKS.lock("roUniversalControlEvent")
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def enableRemoteControl():
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LOCKS.unlock("roUniversalControlEvent", True)
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LOCKS = Locks()
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