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threads in a program share Code section, Data section, and all the open files. However, each thread will have its own [Ans1] and [Ans2].

Consider the following multi-threaded C code. 1: void send_money ( acct * src , acct * dst , int amount ) { 2: lock (& src -> mutex ); 3: if (src -> value >= amount ) { 4: src -> value -= amount ; 5: lock (& dst -> mutex ); 6: dst -> value += amount ; 7: unlock (& dst -> mutex ); 8: } 9: unlock (& src -> mutex ); 10: } (a) Describe any bug(s) you see along with the line number. You need to justify your answer (b) Now revise the code to fix the bug. (you need to write the entire code (whatever lines given) with the change)

In the Producer code, the counter++ is implemented as     register1 = counter     register1 = register1 + 1     counter = register1 In the consumer code, the counter– is implemented as     register2 = counter     register2 = register2 – 1     counter = register2 Assume the producer produces one item and does counter++, and the consumer consumes it and runs counter– Consider this execution interleaving with “counter = 3” initially: S0: producer execute register1 = counter        S1: producer execute register1 = register1 + 1   S2: consumer execute register2 = counter     S3: consumer execute register2 = register2 – 1  S4: producer execute counter = register1         S5: consumer execute counter = register2     Hence, the final value of the counter for the producer will be [Ans1], and the consumer will be [Ans2] where the correct value of the counter will be [Ans3]

Bram does not ever want to get married. The idea of a lifetime commitment makes him anxious and uncomfortable, and any time a girlfriend brings up the subject of marriage, he breaks up with her. According to Erikson, Bram will not successfully resolve the ____________ crisis.

During the embryonic period, the ectoderm is formed, which will become the ____.

When do most toddlers develop the internalized set of moral standards that guide their emotions and behavior?

When the infant becomes a toddler, the relationship between the younger and older sibling changes. On the positive side, the relationship improves because ____.

Between now and 2050, what will the increase in population in the United States be nearly entirely due to?

What is the name of the thick, yellowish milk that is extremely rich in protein and antibodies that the mother first produces?

Many infants begin “sleeping through the night” around four months. A couple of months later they may begin waking during the night again. Why?