Computer Systems: A Programmer's Perspective Plus Mastering Engineering With Pearson Etext -- Access Card Package (3rd Edition)
3rd Edition
ISBN: 9780134123837
Author: Randal E. Bryant, David R. O'Hallaron
Publisher: PEARSON
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Chapter 9.9, Problem 9.10PP
Program Plan Intro
Simple Segregated Storage:
Simple Segregated Storage is the fastest and simplest
- It works by separating a blocks of memory into fixed size chunks.
- The free list holds same size blocks for each size class, respectively the size of the largest item of the size class.
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Develop a C/C++ program that accepts the name of a memory trace file as a command line argument. Use the data to simulate a set associative cache using LRU replacement. Additional command line arguments will be needed to identify the details of the simulated cache. The arguments should appear in the following order:
the memory trace input file
X, where 2X == the number of direct-mapped sets
Y, where 2Y == the number of blocks per set
Z, where 2Z == the number of cached words per block
Your program (say it's a compiled C program) could be run like this:
./cache data.tra 3 2 4
This would simulate an 8 set associative LRU cache with 4 blocks per set, where each block caches 16 addresses. NOTE… the reason I've chosen to use exponents for arguments is to ensure we have powers of 2 for everything.
Trace File
The trace file is line based with each line containing a memory address requested, in hex. Please note this data is real, so the addresses are larger than 32-bits. In…
7. a. Explain the concept and the cause of a memory leak.
b. Explain the idea of garbage collection and how it is related to current heap links
I'm having a hard time seeing the problem with this buffer overflow problem can someone please elaborate if its secure or not, and if there are any other issues with the implementation in the problem?
Someone tries to fix the stack based buffer overflow problem as follows, is it secure now? why? Are there any other issues within the function's implementation below? Explain your reasoning.
int bof(char *str, int size)
{
char *buffer = (char *) malloc(size);
strcpy(buffer, str);
return 1;
}
Chapter 9 Solutions
Computer Systems: A Programmer's Perspective Plus Mastering Engineering With Pearson Etext -- Access Card Package (3rd Edition)
Ch. 9.2 - Prob. 9.1PPCh. 9.3 - Prob. 9.2PPCh. 9.6 - Prob. 9.3PPCh. 9.6 - Prob. 9.4PPCh. 9.8 - Practice Problem 9.5 (solution page 882) Write a C...Ch. 9.9 - Prob. 9.6PPCh. 9.9 - Prob. 9.7PPCh. 9.9 - Prob. 9.8PPCh. 9.9 - Prob. 9.9PPCh. 9.9 - Prob. 9.10PP
Ch. 9 - Prob. 9.11HWCh. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Given an input file hello.txt that consists of the...Ch. 9 - Determine the block sizes and header values that...Ch. 9 - Prob. 9.16HWCh. 9 - Prob. 9.17HWCh. 9 - Prob. 9.18HWCh. 9 - Prob. 9.19HWCh. 9 - Write your own version of malloc and free, and...
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