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Elimination of common sub expression during code optimization
An optimizing transformation is a rule for rewriting a section of a program to enhance its execution efficiency without influencing its meaning. One of the methods is "Common sub expression elimination"
In the expression "(a+b)-(a+b)/4", "common subexpression" considers to the duplicated "(a+b)". Compilers implementing this method realize that "(a+b)" won't change, and like, only calculate its value once.
copy-on-write
Many early operating systems regarded processes as different timesharing users. The process abstraction is a popular way to organize concurrent programs, but it is not the only cho
VARIABLE PARTITIONING We can differ the partitions and change the location according to the size of the process. Here if a 10k process enters we are able to make a space of
The following is a dump of a TCP header in hexadecimal format: 00CD0018 00000EF1 00000D5D 502200D1 01BF0010 We need to first split the above hex as such 00 CD 00 18 00 00
Explain the ExitThread Function used in the Windows NT ExitThread(ExitCode) The ExitThread( ) call is made to end the currently running thread. If the current thread is th
Q. Why is rotational latency typically not considered in disk scheduling? How would you alter SSTF, SCAN and C-SCAN to comprise latency optimization? Answer: Most disks don't
Q. Describe the purpose of the open() and close() operations. Answer: The open() operation notifies the system that the named file is about to become active. The c
Define Coding in an independent service architecture Coding in an independent service architecture alleviates many of the traditional dependencies of monolithic applications.
What are turnaround time and response time? Turnaround time is the interval among the submission of a job and its completion. Response time is the interval among submission
For the first assignment you are required to construct a logic circuit onto a copper clad circuit board (vero board). This construction will require the use of planning the positio
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