c programming project and need the explanation and answer to help me learn.
This assignment targets resource and activity profiling for processes. The program you are developing can be thought of as a simplified activity monitor. The program will be provided a process ID (of a currently executing process e.g., a web browser) as an argument. The program will then report on a slew of process execution statistics. Must write using C. Include all the file and create (a Makefile that performs both a make clean as well as a make all, )see the attached doc for full instruction. include the output screenshot.
ATTACHMENTS
Requirements: n/a
Extra Credit Assignment
RESOURCE & ACTIVITY PROFILING FOR A PROCESS
This assignment targets resource and activity profiling for processes. This assignment will contribute 2 points towards your overall course grade. You should attempt this extra credit assignment ONLY after you have successfully wrapped up HW5 (which accounts for 10% of your course grade) and are looking for a challenge.
The assignment should be implemented in C and you will be gaining expertise in how to perform File I/O in C.
Description of Task
The program you are developing can be thought of as a simplified activity monitor. The program will be provided a process ID (of a currently executing process e.g., a web browser) as an argument. The program will then report on a slew of process execution statistics. These include:
CPU utilization
Memory utilization
Elapsed time
Page faults
To report these statistics, you will work with files located in the /proc directory, which houses runtime information for the system. For a running process, you can find data concerning it in the
/proc/[pid] directory, where [pid] is its process ID. The documentation for /proc provides specific details on the information contained in these files.
Requirements of Task
The program should execute on machines in the CSB-120 lab. These statistics should be retrieved by accessing files in the following directories: /proc and /proc/[pid]. No other tools or utilities should be used to retrieve this information; doing so, will result in an automatic zero.
The /proc/[pid]/stat and /proc/[pid]/statm files have similar formats. Both contain space delimited data about the system. In the man page, man proc, the order and types of the fields in these files are shown. For example, here are the first two entries from the /proc/[pid]/stat section of the proc man page:
pid %d
The process id.
comm %s
The filename of the executable.
Given a pid, these first two values from can be read in this way:
Another way to read these fields is by using strtok, which would allow the space-delimited tokens to be read individually, in the order shown in the man page.
The /proc/[pid]/stat file contains status information for a running process. Given a process ID, the following fields should be read from this file (0.2 points each):
Executable name
Process state
Number of page faults
Parent Process PID
Process Group ID
Time spent in Kernel Mode
Time spent in User Mode
The /proc/[pid]/statm file contains memory information for a running process. Given a process ID, the following fields should be read from this file (0.2 points each):
Virtual memory size
Resident pages
Shared pages
Error Handling:
1. If the program is specified an invalid ID or the ID of a process that is currently not active, the system should gracefully return an output indicating that the process is not currently active.
Restrictions and Deductions:
[R1]. You should not use ANY external library to solve this problem. There is a 2-point deduction if you do so.
[R2]. You should not leak any memory that you have allocated within your program. There is a 1-point deduction if you do so.
Example Outputs
Print out of what the outputs of the executing programs look like (note that your outputs may differ).
What to Submit
Use the CS370 Canvas to submit a single .tar file that contains:
All C files related to the assignment (please document your code),
a Makefile that performs both a make clean as well as a make all,
a README.txt file containing a description of each file and any information you feel the grader needs to grade your program.
Filename Convention: You should call the executable that drives your program profiler. You can name your other supporting C files anything you want. The archive file should be named as
Grading
This assignment would contribute a maximum of 2 points towards your final grade. The grading will also be done on a 2-point scale. The points are broken up as follows:
Late Policy
Click here for the class policy on submitting late assignments.
