PV operation-generator consumer problems

First, let's look at several concepts:

 

Synchronization: the process of collaboration, for example, development and cooperation by multiple people;

Mutual Exclusion: The process of competing for resources, such as the hard-pressed university course selection;

 

Critical Zone: the process that implements operations on critical resources;

Critical resources: resources that can only be used by one process at a time, such as printers;

 

Semaphores: indicates the number of resources, which is relative to each process;

 

P operation (-1): Apply for resources;

V Operation (+ 1): release resources;

1. Consumer issues of single buffer zone producers

Ii. producer and consumer problems in Multi-buffer zones

PV operation-generator consumer problems