Complementary Programs for course "Linux Kernel Internals"

This distribution is a collection of programs that are generally unrelated, except in that they all deal with the concurrent programming. The main purpose of these programs is to be illustrative and educational.

Project Listing

Coroutine
- coro: A coroutine implementation with setjmp/longjmp.
- tinync: A tiny nc implementation using coroutine.
- fiber: A user-level thread (fiber) using clone system call.
- preempt_sched: A preemptive userspace multitasking based on a SIGALRM signal.
Multi-threading Paradigms
- tpool: A lightweight thread pool.
- refcnt: A generic reference counting.
- work-steal: A work-stealing scheduler.
- mutex: A low-memory-footprint mutex.
Producer–consumer problem
- spmc: A concurrent single-producer/multiple-consumer queue.
- mpsc: An unbounded lockless single-consumer/multiple-producer FIFO queue.
- mpmc: A multiple-producer/multiple-consumer (MPMC) queue using Linux futex.
- lf-queue: A bounded lock-free queue.
- channel: A Linux futex based Go channel implementation.
- broadcast: A lock-free MPMC broadcast pub-sub queue.
Lock-Free Data Structure
- ringbuffer: A lock-less ring buffer.
- lfring: A lock-free multiple-producer/multiple-consumer (MPMC) ring buffer.
- ringbuf_shm: An optimized lock-free ring buffer with shared memory.
- mbus: A concurrent message bus.
- hashmap: A concurrent hashmap implementation.
- lf-timer: A lock-free timer.
Synchronization
- mcslock: An MCS lock implementation.
- seqlock: A seqlock (sequence lock) implementation.
- hp_list/: A concurrent linked list utilizing Hazard Pointers.
- rcu-list: A concurrent linked list utilizing the simplified RCU algorithm.
- qsbr: An implementation of Quiescent state based reclamation (QSBR).
- list-move: Evaluation of two concurrent linked lists: QSBR and lock-based.
- rcu_queue: An efficient concurrent queue based on QSBR.
- thread-rcu: A Linux Kernel style thread-based simple RCU.
- cmap: A concurrent map implementation based on RCU.
Applications
- httpd: A multi-threaded web server.
- map-reduce: word counting using MapReduce.
- redirect: An I/O multiplexer to monitor stdin redirect using timerfd and epoll.
- picosh: A minimalist UNIX shell.

License

The above projects are released under the BSD 2 clause license. Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.

License

quark8828/concurrent-programs

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