Computers and Technology, 13.12.2019 00:31 math10030
This programming question is about semaphore. create two threads t1 and t2. t1 and t2 share an integer data counter. the job of t1 is to increase the value of counter by 1 when t1 is scheduled. the job of t2 is to decrease the value of counter by 1 when t2 is scheduled. because counter is a critical section, you need to use semaphore to implement mutual exclusion between t1 and t2.here is the api you may use: sem_init: initialize an unnamed semaphoresem_wait: lock a semaphore, which is equivalent to the p operation. sem_post: unlock a semaphore, which is equivalent to the v operation. sem_destroy: destroy an unnamed semaphore. here is the basic structure of the program: int counter; //shared between t1 and t2main(){create semaphore; create t1; create t2; destroy semaphore; }thread t1 routine(){while (1){p(); increase counter by 1; output the value of counter; v(); }}thread t2 routine(){while (1){p(); decrease counter by 1; output the value of counter; v(); }}
Answers: 2
Computers and Technology, 21.06.2019 20:20
Wireless communications is likely to be viewed as an essential part of an enterprise network infrastructure when: select one: a. mobile communication is needed b. communication facilities must be installed at low initial cost c. communication must take place in a hostile or difficult terrain that makes wired communication difficult or impossible d. the same information must be broadcast to many locations
Answers: 1
Computers and Technology, 23.06.2019 01:20
Write a function balancechemical to balance chemical reactions by solving a linear set of equations. the inputs arguments are: reagents: symbols of reagents in string row array products: symbols of products in string row array elements: elements in the reaction in string row array elcmpreag: elemental composition of reactants in two dimensional numeric array elcmpprdcts: elemental composition of prducts in two dimensional numeric array hint: the first part of the problem is setting up the set of linear equations that should be solve. the second part of the problem is to find the integers from the solution. one way to do this is to mulitiply the rational basis for the nullspace by increasing larger integers until both the left-and right-side integers exist. for example, for the reaction that involves reacting with to produce and : reagents=["ch4", "o2"]; products =["co2", "h2o"]; elements =["c","h", "o"] elcmpreag=[1,4,0;
Answers: 3
Computers and Technology, 23.06.2019 09:20
How to print: number is equal to: 1 and it is odd number number is equal to: 2 and it is even number number is equal to: 3 and it is odd number number is equal to: 4 and it is even number in the console using java using 1 if statement, 1 while loop, 1 else loop also using % to check odds and evens
Answers: 3
Computers and Technology, 23.06.2019 12:30
What is the difference between the internet and the world wide web?
Answers: 1
This programming question is about semaphore. create two threads t1 and t2. t1 and t2 share an integ...
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