File reading/writing and resource allocation for multiple clients handled by centralized serve, implemented using multithreading in python

• A storage at Server side, where multiple clients can access the storage.
• Whenever a client requests a file check whether it is present or not:
  • if present, check whether it is being read or write by another client or not,
  • if not process the request.
• Notify the operations in the form of messages
  • When a file being read by client notify the read only operation to requesting client.
  • When a file being write by client notify the no access to the requesting client.
• Rules :
  • Multiple clients can read the same file simultaneously
  • Multiple clients cannot simualtaneously read and write the same file
  • Multiple clients cannot simualtaneously write the same file

• The server contains the information about all the instances of all the resources whether they are available or being used by the processes.
• Resources allocated on the basis of first come first server
• One client can access only one resource at the same time
• When a client is allocated the resource, cleint enters the critical section