add cs350 spring 2014 midterm #84
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777lefty
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Jan 22, 2026
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777lefty
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Looks good, some format issues and missing issues, and the problem-subproblem structure seems not to be consistent
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| ## Question 1a [2 point(s)] |
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Background information for all subproblems in problem 1 is missed
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| ## Question 1b [2 point(s)] | ||
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| b. (2 marks)Show the output that will be produced when this program runs. Note that the statement printf(\"%d\",i); will print the value of integer variable i. You should show the combined output of all processes. Your answer should be a single sequence of numbers. |
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| ## Question 2a [5 point(s)] |
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background information for all subproblems in problem 2 is missed
| ## Question 2a [5 point(s)] | ||
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| a. (5 marks)In the space below, implement the lock tryacquire function, which has the following prototype: | ||
| int locktryacquire(struct lock *lock); |
| ## Question 2b [5 point(s)] | ||
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| b. (5 marks)Suppose that a set of threads is using multiple locks for synchronization. In most cases, threads will acquire and release one lock at a time, using lockacquire and lockrelease. However, in some situations it is necessary for a thread to acquire two locks simultaneously. Write a function called acquiretwolocks that a thread can call to lock two different locks. The function prototype should be as follows: | ||
| void acquiretwolocks(struct lock *L1, struct lock *L2) |
| // set the value in R1 to 1 to indicate success. Otherwise, | ||
| // do not change the value of the lock variable and set the value | ||
| // of R1 to 0 to indicate failure. | ||
| sc R1,&lock |
| Crunchers never block. When they are chosen to run by the scheduler, they will run until they are preempted. Talkers, on the other hand, continuously output characters, as illustrated by the following pseudo-code: | ||
| while (true){ | ||
| /* output a character */ | ||
| } |
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| Do not use any synchronization primitives other than semaphores in your solution. Do not make any changes to the skeleton code other than inserting calls to semaphore operations. | ||
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| (Skeleton implementations and declarations are provided to students; do not provide solutions in the exam text here.) |
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It's neither included here nor provided anywhere else?
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| Do not use any synchronization primitives other than semaphores in your solution. Do not make any changes to the skeleton code other than inserting calls to semaphore operations. | ||
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| (Skeleton implementations and declarations are provided to students; do not provide solutions in the exam text here.) |
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It's neither included here nor provided anywhere else?
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| ## Question 7a [3 point(s)] | ||
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| a. (3 total marks)Which of the following effects does a MIPS syscall instruction have when it is executed? (Note: we are interested only in the effects of this single instruction, not the effects of any code that runs after this instruction.) Circle all that apply. |
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Maybe we can ask agent to output the items that apply rather than circle them here
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Description
Add CS350 Spring 2014 Midterm exam data and solution file to the courseexam benchmark.
Changes
Testing
Prepared the dataset by running: python3 courseexam/prepare.py
Checklist