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What are semaphores?
Semaphore: A semaphore is a synchronization tool which gives a general-purpose solution to controlling access to critical sections. It s an abstract data type (ADT) which defines a nonnegative integer variable that, apart from initialization, is accessed simply through two standard operations that are: wait and signal. The typical definition of wait in pseudo code is
wait(S){
while(S<=0)
// do nothing
S--; }
The classical definitions of signal in pseudo code is signal(S){
S++; }
While one process modifies the semaphore value, anno one process can concurrently modify that similar semaphore value. As well, in the case of the wait(S), the testing of the integer value of S (i.e. S<=0), and its possible modification(S--), should also be executed without interruption.
As per the JMS specification, when you are in a transaction, the acknowledge Mode is ignored. If acknowledge() is known as within a transaction, it is ignored.
What is Random access memory (RAM) This is a volatile memory (i.e. contents are lost when computer is switched off). A user can write or delete data and read the contents. Befo
What is a system call? A system call is a request made through any program to the operating system for performing tasks, picked by a predefined set, that the said
Synchronized with a clock signal Memory system considerations Speed Cost Size of chip Power dissipation Memory controller Refresh Overhead
Can both client and server use the same protocol port on the same computer at the same time? Explain. Client and server can't use similar port number on similar computer at ide
A scope resolution operator (::), can be used to describe the member functions of a class outside the class.
What are latches and flipflops? There are two types of circuits as follows: a. Combinational b. Sequential Flipflops and latches both come into the category of "sequen
i just want the experiment to be taken , on Grid Security........
How exceptions are handled in java? Exception handing In Java: A java exception is an object which describes an exceptional condition which has occurred in a piece of code.
where can I find detailed explanation of 6 stage and 7 stage pipeline ??
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