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At the end of this lecture, and into the next lecture, we will discuss the last major type of logical error that can occurwhen programming with threads. A deadlock occurswhen two things (threads, processes, etc) wait on each other. One example of a deadlock is known as the Dining Philosophers problem. In this abstract problem, philosophers alternate between thinking and eating, and the dining table has as many forks as philosophers. Each philosopher needs two forks to eat with. The problem which can occur is if each philosopher gets one fork, and will not let go of it. Then no philosopher can get two forks, which he or she needs in order to eat. In this situation, we have a deadlock, and the philosophers will starve!
Explain the OS/2 Operating System Like NetWare, OS/2 manage resources at three levels, as shown in Figure 4.5 Resources may be maintained at the session, process, and thread le
Q. In the IBM/370 memory protection is offered through the use of keys. A key is a 4-bit quantity every 2K block of memory has a key (the storage key) associated with it. The CPU
What is busy waiting? When strict alteration is done there may take place situation like two processes setting their flag as true. Therefore both of the processes have equal pr
Define UFD and MFD. In the two-level directory structure, every user has her own user file directory (UFD). Every UFD has a similar structure, but lists only the files of a one
Explain Structure The Grammar for programming language is a formal description of Structure
Define entry section and exit section. The critical section problem is to design a protocol that the processes can use to cooperate. Every process must request permission to e
Define Name of some language processors? Name of some language processors are as follow: Assembler, Compiler and Interpreter
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Define Instance. An instance is an administrative unit in which components of R/3 systems giving one or more services are grouped together. The services offered by a case are
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