No preemption: Not even God can force B or G to release Sorry or Accepting own mistake.
Hold and Wait: At a time, one is holding Sorry and other Accepting own mistake, one is waiting for Accepting own mistake to release sorry, and other is waiting for sorry to release accepting own mistake. Mutual Exclusion: Only one of G or B can say sorry or accept own Mistake at a time. Resource1: Sorry Resource2: Accepting own mistake where usually one of the process has to crash to resolve it, of course it's the lesser priority one(Boy )). I recently realized that the fights between couples are nothing but a deadlock. If all goes as planned, deadlock will occur, This thread holds the lock on resource2, and won't won't release it till it gets a lock on resource2. But wait! Thread 1 locked resource1, and Then it pauses, for the same reason as the first This thread locks resource 2 right away It tries to lock resource2 then resource1 Now wait 'till we can get a lock on resource 2 are asynchronous things, but we're trying to force Pause for a bit, simulating some file I/O or It tries to lock resource1 then resource2
* should always acquire their locks in the same order. * To avoid this sort of deadlock when locking multiple resources, all threads * are both trying to acquire locks for the same two resources. * It is a program that purposely causes deadlock between two threads that * This is a demonstration of how NOT to write multi-threaded programs.
#PROGRAMMABLE DOOR DEADLOCK TROUBLESHOOT CODE#
Here's a code example from the computer science department of a university in Taiwan showing a simple java example with resource locking.
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