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Above piece of code will not work on any system. following is the reason:
- ansh04 August 30, 2014-> Single Processor : Lets assume Thread1 executes first line and found that "lock = 0" so it will go in to else condition. Before executing "lock =1" statement task switching takes place and another thread2 also found that "lock = 0". Thus at the same time 2 threads are in their critical section.
-> Multiprocessor system : Assume that 2 threads are executing same piece of code in parallel and both of them found that "lock =0" so both threads will enter into critical section.
Thus above code will not work on any system.