Determine the block sizes and header values that would result from the following sequence of malloc requests Assumptions (1) The allocator maintains double word alignment and uses an implicit free list with the block format from Figure 9 35 Figure 9 35 (2) Block sizes are rounded up to the nearest multiple of 8 bytes malloc returns a pointer to the beginning of the payload 31 Header Block size 3210 00 al Payload (allocated block only) Padding (optional) a 1 Allocated a 0 Free The block size includes the header, payload, and any padding

Question: Determine the block sizes and header values that would result from the following sequence of malloc requests. Assumptions: (1) The allocator maintains double-word alignment and

Determine the block sizes and header values that would result from the following sequence of malloc requests. Assumptions:

(1) The allocator maintains double-word alignment and uses an implicit free list with the block format from Figure 9.35.

Figure 9.35

malloc returns a pointer to the beginning of the payload 31 Header Block size 3210 00 al Payload (allocated

(2) Block sizes are rounded up to the nearest multiple of 8 bytes.

Request malloc (2) malloc (9) malloc (15) malloc (20) Block size (decimal bytes) Block header (hex)

malloc returns a pointer to the beginning of the payload 31 Header Block size 3210 00 al Payload (allocated block only) Padding (optional) a = 1: Allocated a = 0: Free The block size includes the header, payload, and any padding

Step by Step Solution

★★★★★

3.43 Rating (169 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

This problem touches on some core ideas such as alignment req... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Computer Systems A Programmers Perspective Questions!

The population values that would result from running a 2 x 3 factorial treatment structure are given in the following table. Note that two values are missing. If there is no interaction between the...

The Jordan Corporation is a manufacturer of heavy-duty trucks. Because of a low internal profitability rate and lack of favorable investment opportunities in the existing line of business, Jordan is...

Evaluate each expression using the values given in the table. 032 50 - 3 -2 -1 f(x) 9 7 g(x) -7 -2 1 2 3 10 -1 - 3 0 -2 -7 a. (fog)(1) d. (gof)(3) a. (fog)(1)= b. (fog)(2)= c. (go f)(2) = d. (go...

Determine the block sizes and header values: Original questions are like this picture. What if requests are malloc(4), malloc(7), malloc(19), and malloc(22), what are the block sizes(decimal bytes)...

Original questions are like this picture. What if requests are malloc(4), malloc(7), malloc(19), and malloc(22), what are the block sizes(decimal bytes) and block headers(hex)? I also wanna know how...

Q3. (20 pts) Consider an allocator that uses an implicit free list for which the block format is defined below: Each memory block consists of a 2 byte header, the payload and possibly some additional...

In C. Fill in the code underneath any comment that reads "// YOUR CODE". CODE: #include #include #include struct Block { int block_size; struct Block *next_block; }; const OVERHEAD_SIZE = __________...

answer the question clearly You are building a flight-control system for which a convincing safety case must be made. Would you assign the tasks of safety requirements engineering, test case...

(a) In SystemVerilog, what is the difference between: (i) The ternary operator ? and if...then...else statements? [2 marks] (ii) always_ff and always_comb? [2 marks] (iii) Blocking, non-blocking and...

State what is meant by a directed graph and a strongly connected component. Illustrate your description by giving an example of such a graph with 8 vertices and 12 edges that has three strongly...

The following data relates to Spurries Company's estimated amounts for the coming year. Estimate: Department 1 Department 2 Manufacturing overhead $1,340,000 ...

Consider a normal population distribution with the value of a known. (a) What is the confidence level for the interval x 2.810/ n? (Round your answer to one decimal place.) % (b) What is the...

Assume you are a 6 5 - year - old investor with the following demographics: retired, but do some part - time consulting, married and own your home, kids are grown, you and spouse are on Medicare, you...

The Ethic of Justice: Richard is required to support the refugee students entry and success in his school. Can he share the requirements in such a way with parents, students, and their families that...

What decimal number does the bit pattern 00C000000 represent if it is a twos complement integer? An unsigned integer?

If the bit pattern 00C000000 is placed into the Instruction Register, what MIPS instruction will be executed?

Based on your answers to 3.35 and 3.36, does (3.41796875 10 -3 6.34765625 10 -3 ) 1.05625 10 2 = 3.41796875 10 -3 (6.34765625 10 -3 1.05625 10 2 )?

Chapter 6 The Accounting Cycle: Statements and Closing Entri At the end of July, the following adjustments had to be journalized to properly report the balances of the company's accounts. Jul 31 One...

Claymore Corp. has the following information about its standards and production activity for September. The controllable variance is: Actual total factory overhead incurred $ 35,300 Standard factory...

Exercise 1 4 - 4 ( Algo ) Uncertain Future Cash Flows [ LO 1 4 - 4 ] Lukow Products is investigating the purchase of automated equipment that will save $ 1 1 0 , 0 0 0 each year in direct labor and...