What is a lock free queue?
Lock-free queue is a queue applying to concurrency but without locking. When using lock-free queue, slow or stopped processes do not prevent other processes from accessing data in it.
What is multiple producer single consumer?
Single-producer (sp) or multiple producer (mp) means that only a single thread or multiple concurrent threads are allowed to add data to a data structure. Single-consumer (sc) or Multiple-consumer (mc) denote the equivalent for the removal of data from the data structure.
What is SPSC queue?
The spsc_queue class provides a single-writer/single-reader fifo queue, pushing and popping is wait-free. Policies: boost::lockfree::capacity<> , optional. If this template argument is passed to the options, the size of the ringbuffer is set at compile-time.
What is producer consumer queue?
The producer consumer pattern is a concurrency design pattern where one or more producer threads produce objects which are queued up, and then consumed by one or more consumer threads. The objects enqueued often represent some work that needs to be done.
Is lock-free always better?
Lock-free isn’t necessarily any faster, but it can eliminate the possibility of deadlock or livelock, so you can guarantee that your program will always make progress toward finishing.
Is lock-free faster?
When the number of threads is small, lock-free data structures and lock-based data structures are comparable. But as the number of threads rises, at some point lock-based data structures exhibit a sharp performance drop, while lock-free data structures scale up to thousands of threads.
What is consumer producer?
When people make goods and services, goods and services, goods and services—when people make goods and services, they are producers. When they use the things produced, the things produced, the things produced—when they use the things produced, they are consumers.
Is producer a consumer problem?
The Producer-Consumer problem is a classic problem this is used for multi-process synchronization i.e. synchronization between more than one processes. In the producer-consumer problem, there is one Producer that is producing something and there is one Consumer that is consuming the products produced by the Producer.
What is Consumer producer?
Is lock-free programming faster?
How does lock-free work?
At its essence, lock-free is a property used to describe some code, without saying too much about how that code was actually written. Basically, if some part of your program satisfies the following conditions, then that part can rightfully be considered lock-free.