|
Question: What is a thread in C++?
|
Answer: A thread in C++ is the smallest unit of execution within a process.
Threads enable concurrent execution of tasks and allow multiple tasks to run simultaneously.
|
|
Question: Can you explain the difference between thread-based and process-based multitasking?
|
Answer: Thread-based multitasking involves executing multiple threads within the same process, sharing the process's memory space.
Process-based multitasking, on the other hand, involves executing multiple independent processes, each with its own memory space.
|
|
Question: What is a race condition in multithreading?
|
Answer: A race condition occurs in multithreading when the outcome of a program depends on the relative
timing or interleaving of multiple threads' execution, leading to unpredictable behavior or incorrect results
due to shared resources being accessed concurrently without proper synchronization.
|
|
Question: What is thread synchronization?
|
Answer: Thread synchronization is the coordination of multiple threads to ensure that they access
shared resources in a controlled and orderly manner. It is important to prevent race conditions,
ensure data consistency, and maintain program correctness in multithreaded environments.
|
|
|
|
|
|
Question: Can you Explain the concept of a 'mutex' in C++?
|
Answer: A 'mutex' (short for mutual exclusion) is a synchronization primitive used to
protect shared resources by allowing only one thread at a time to access the protected section of code.
Threads attempting to acquire the mutex while it is locked are typically blocked until it becomes available.
|
|
Question: What is a deadlock in multithreading?
|
Answer: A deadlock occurs in multithreading when two or more threads are blocked indefinitely,
each waiting for a resource that the other thread holds.
Deadlocks can be prevented by enforcing a strict ordering of resource acquisition, avoiding nested locks,
and using mechanisms such as timeouts or deadlock detection algorithms.
|
|
Question: Can you explain the concept of a 'condition variable' in C++?
|
Answer: A condition variable is a synchronization primitive used to coordinate communication
between threads by allowing them to wait for a certain condition to become true before proceeding.
Condition variables are typically used in conjunction with mutexes to implement
thread-safe producer-consumer patterns and other synchronization mechanisms.
|
|
|
|
|
|
Question: What is thread safety in C++?
|
Answer: In C++ Thread safety refers to the property of a program or data structure that ensures correct behavior
when accessed concurrently by multiple threads.
Thread-safe code either avoids shared mutable state altogether
or employs synchronization mechanisms such as mutexes to protect shared resources.
|