10 Questions
What does the thread library do when a system call is made to change the signal mask for a particular signal?
Changes the signal mask for each kernel level thread one by one
In the context of signal handling, why are updates of the signal mask considered cheap?
They do not affect the performance of the thread library
When a user level thread decides to re-enable a particular signal, what action does the user level library take?
Notifies the kernel level thread to update its signal mask for that specific signal
Why does updating the signal mask for each kernel level thread one by one optimize performance?
It reduces system call overhead
What is the reason behind the need to update signal masks for kernel level threads one by one?
To optimize performance in handling signals
How does the user level library optimize for the common case in managing signals?
By updating signal masks less frequently than handling signals
What distinguishes updates of the signal mask from handling signals directly?
Signal handling involves system calls
In managing signals, why are updates of the signal mask made at the user level?
To avoid kernel-level changes
Why does each kernel level thread have its signal mask updated individually?
To optimize performance and reduce system call overhead
What is the primary reason for running through the process of updating signal masks for each kernel level thread one by one as signals come in?
Optimizing performance as signals are received
Learn about the overhead of threads acting as interrupts and the impact on interrupt handling operations. Explore the efficiency gains in avoiding the need to disable and re-enable signals when using mutex locks.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
