【RTS笔记2】Concurrent Programming

Concurrent Programming：

Define

Concurrent programming techniques are those used to deal with parallelism in computing tasks. The correct logical behaviour of a concurrent program depends on correctly coordinating tasks to meet the program’s objectives.

Concurrent 需要关注两点：

• Synchronisation 同步：to satisfy constraints on the ordering of tasks.
• Communication 沟通： for passing information from one task to another

Concurrency is not parallelism 并发不是平行！

Concurrent execution can take three different forms:

1. Multiprogramming: 单个处理器交错运行任务the processes multiplex their execution on a single processor.
2. Multiprocessing:多个处理器共享内存分别执行任务 th