1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katrin [286]
3 years ago
14

Consider a system consisting of processes P1 , P2 , ..., Pn , each of which has a unique priority number. Write a monitor that a

llocates three identical printers to these processes, using the priority numbers for deciding the order of allocation.
Computers and Technology
1 answer:
adelina 88 [10]3 years ago
7 0

Answer:

See explaination

Explanation:

The code

type printer = monitor

var P: array[0…2] of boolean;

X: condition;

procedure acquire (id: integer, printer-id: integer);

begin

if P[0] and P[1] and P[2] then X.wait(id)

if not P[0] then printer-id := 0;

else if not P[1] then printer-id := 1;

else printer-id := 2;

P[printer-id]:=true;

end;

procedure release (printer-id: integer)

begin

P[printer-id]:=false;

X.signal;

end;

begin

P[0] := P[1] := P[2] := false;

end ;

Note:

Monitors are implemented by using queues to keep track of the processes attempting to become active int he monitor. To be active, a monitor must obtain a lock to allow it to execute the monitor code. Processes that are blocked are put in a queue of processes waiting for an unblocking event to occur.

You might be interested in
To add text to a slide when using presentation software, you need to add a text box. To add a text box, click the Text Box butto
Amiraneli [1.4K]

The answer is the second choice, "Insert."


On Microsoft Powerpoint, when you click on the insert tab you can find the text box button.

3 0
3 years ago
Read 2 more answers
How can I master networking my home/business computer(s) - Tv's - iot devices and make the whole system as secure as possible?
vagabundo [1.1K]

Answer:

you can take guide from

hope this will help you....!

5 0
2 years ago
What is a nonlinear presentation
miskamm [114]
It basically means that you skipped slides in what ever you are presenting
8 0
3 years ago
Read 2 more answers
What is Patch tool ???<br><br>​
AfilCa [17]

Answer:

<u><em>DEAR HERE IS YOUR ANSWER:</em></u>

<u><em>T</em></u>he Patch Tool is part of the healing brush set of tools. These are the go-to tools for retouching and repairing your images. The Patch Tool is primarily used to repair larger areas of an image, or get rid of any distractions or blemishes.

  • The patch tool was introduced into Photoshop at the same time as the Healing Brush
  • You don’t have to use the Patch tool to define a selection. You can use any selection tool and then select the Patch tool.  <em><u> </u></em>

<em><u>HOW TO USE PATCH TOOL IN PHOTOSHOP:</u></em>

  1. Click and hold the Healing Brush tool to select the Patch tool; on the Options bar, select the Destination radio button
  2. With the Patch tool still selected, drag to create a marquee around the source you want to use as the patch
  3. After you create the marquee, drag the selected source area to the destination to be repaired.

<em><u>I HOPE IT WILL WORK DEAR THANKS FOR ASKING  QUESTION</u></em>

Explanation:

4 0
3 years ago
Read 2 more answers
Write a program that asks a user to enter a date in month day year format (for example 10 12 2016) and displays the day of the w
AleksAgata [21]

Answer and Explanation:

Using javascript:

function dayof_theweek(){

var TodayDate = window. prompt("enter today's date in the format 'year, month, day' ");

var Datenow=new date(TodayDate);

var Dayofweek=Datenow.getday();

var Days=["monday","Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];

if(Dayofweek==indexOf(Days[Dayofweek]))

{

document.createTextnode(Days[Dayofweek]);

}

}

The program above uses a date object which uses the method getday to get the day of the week(get day returns an integer from 0 to 6).we then use a comparison operator == to test the condition that returned value Dayoftheweek is same with the index of the array Days and then print to a html document. The program may need improvements such as the fact that errors may arise when proper input isn't given, and therefore must be handled.

8 0
3 years ago
Other questions:
  • In doing a load of clothes, a clothes drier uses 18 A of current at 240 V for 59 min. A personal computer, in contrast, uses 3.0
    7·1 answer
  • Discussion group may have a___________ who monitors the postings and enforces the sides rules​
    13·1 answer
  • Text messaging is an example of nonverbal communication. Please select the best answer from the choices provided. T F
    7·2 answers
  • A user prefers an external monitor, mouse, and keyboard for a laptop. The user does not want to use the built-in screen; however
    5·1 answer
  • Paul is playing a game when his computer shuts down unexpectedly. Paul has noticed recently that his fans are running very loud.
    13·1 answer
  • Design 3 classes: Computer - Superclass
    11·1 answer
  • Rewritable (write, erase, write again) is known as _______.
    7·1 answer
  • Frank enters "1" in the field for postal code. What is frank most likely trying to do?
    13·2 answers
  • Trojans depend on ________ to spread. A rootkits B self-replication C code injection D social engineering
    14·1 answer
  • Using computers can lead to a number of physical safety issues. State and explain TWO(2) of these types of issues.​​​​​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!