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bearhunter [10]
2 years ago
13

Explain why Windows and Linux implements multiple locking mechanisms. Describe the circumstances under which they use spinlocks,

mutex locks, semaphores, and condition variables. In each case, explain why the mechanism is needed.
Computers and Technology
1 answer:
galben [10]2 years ago
8 0

Answer:

The description for the given question is described in the explanation section below.

Explanation:

Depending on the needs of the device programmers these OS have various locking frameworks. Spinlocks become beneficial for preemptive multitasking processes during which a thread will operate in such an active loop instead of risking a rest queue latency. Mutexes become beneficial to utility lockers.

  • Solaris 2 employs flexible mutexes, indicating something like this on preemptive multitasking computers, the mutex is introduced with either a spinning switch.
  • Semaphores and state variations are much more effective methods for consistency where a commodity needs to be managed for such a prolonged period of time because spinning is unstable over a prolonged time.

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In cell B16, enter a function to calculate the total attendance for the years 2014 through 2018 using the totals in the range B1
Burka [1]

Answer:

The function to be entered in the cell B16 to calculate the total attendance for the years 2014 through 2018 is; =sum

Explanation:

In Ms. Excel the Sum function is used to calculate the totals of particular cell range. Simply type in; =sum in the cell B16 then highlight the cell range  B12:F12. Upon pressing enter, the spreadsheet will return the total attendance for the years 2014 through 2018.

3 0
2 years ago
A chemical found in the synaptic vesicles , which , when released . has an effect on the next cell is called a?
ruslelena [56]
Neurotransmitters is the chemical found in the synaptic vesicles that, when released, has an effect on the next cell.
7 0
2 years ago
In the description of the Hack machine language in chapter 4, it is stated that in well-written programs a C-instruction that ma
kati45 [8]

Answer:

To avoid conflicting uses of A register, few well-written programs follow the best practice, i.e, avoiding reference to M and vice versa. The programmer can use the A register to select either a data memory location for a subsequent C-instruction involving M, or an instruction memory location for a subsequent C-instruction involving a jump. Thus, to prevent the conflicting use of the A register, in well-written programs a C-instruction that may cause a jump (i.e., with some non-zero j bits) should not contain a reference to M, and vice versa.

Image is attached for better demonstration and understanding.

4 0
2 years ago
Which advertising medium has the widest reach on a global front?
lesya [120]

Answer: B

The internet would allow businesses to easily expand globally with the help of social media and the ever expanding resources being poured onto the internet, reaching customers anywhere in the world.

8 0
2 years ago
Which of the following commands uses correct syntax for matching the patterns bunk or bank at the end of a line of text?
Alika [10]

Answer:

a. grep 'b[au]nk$' myLine

Explanation:

grep is a command used for searching a specified pattern in a given text.

Our goal is to match the character sequence - bank or bunk at the end of line in a  given line referenced by myLine.

The regular expression for the specified match criterion is:

b[au]nk$

The second character can be either a or u.

$ indicates match at end of line.

So the overall grep command is :

grep 'b[au]nk$' myLine

8 0
2 years ago
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