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, 22.06.2019 08:10, josued123321
Alook-up table used to convert pixel values to output values on a monitor. essentially, all pixels with a value of 190 or above are shown as white (i. e. 255), and all values with a value of 63 or less are shown as black (i. e. 0). in between the pixels are scaled so that a pixel with a value p is converted to a pixel of value 2/127 โ+3969). if a pixel has a value of 170 originally, what value will be used to display the pixel on the monitor? if a value of 110 is used to display the pixel on the monitor, what was the original value of the pixel?
Answers: 1
Computers and Technology, 22.06.2019 14:40, Kathryn014
You are working with a professional edition organization. they wish to install the expense tracker which requires the use of 4 custom tabs, 3 custom objects, and one custom app. if the company is already using 4 applications, 36 custom objects, and 7 custom tabs, what will happen when they try to install expense tracker?
Answers: 1
Computers and Technology, 22.06.2019 18:00, deathfire5866
Determine whether the following careers would require training or college.
Answers: 1
This programming question is about semaphore. create two threads t1 and t2. t1 and t2 share an integ...
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