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Explain a binary semaphore with the help of an example?
An abstract data type (ADT) is a semaphore which defines a nonnegative integer variable that apart from initialization is accessed only by two standard operations i.e.: wait and signal. The typical definition of wait in pseudo code is given as
wait(S){
while(S<=0)
; // not do anything
S--;
}
The classical definitions of signal in pseudocode is signal(S){
S++;
A binary semaphore is one which only gets the values 0 and 1. Such semaphores are utilized to implement mutual exclusion.
The variable that are declared outside all the functions are called The variables that are declared outside every functions are known as global variable.
Explain File scope File scope: The variables and functions with file scope appear outside any block or list of parameters and are accessible from any place in the translation
duality
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