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CIsc361

the

QuestionAnswer
A thread is a lightweight process that shares the same address space as other threads in the same process
Creating a thread first guarantees that it will execute first
A race condition occurs when the correctness of a program depends on the relative timing of threads
he POSIX pthread_create function requires a function pointer that returns void* and accepts void* as an argument
pthread_join waits for a specified thread to finish execution
Returning a pointer to a stack variable from a thread is safe because each thread has its own stack
Using pthread_create immediately followed by pthread_join is equivalent to a normal function call.
Locks are used to protect critical sections from concurrent access
Fine-grained locking can reduce parallelism compared to coarse-grained locking
Using a simple integer variable and a while loop to implement a lock is correct because test and set happen atomically
Spin locks waste CPU cycles while waiting for the lock to be released
Disabling interrupts on a single CPU guarantees mutual exclusion
Created by: user-2010466
 



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