Controlling access to a shared resource

A system for controlling access to a shared resource, the system comprising:

• a processing unit configured to support concurrent processes executing concurrently in the system;
• a shared resource comprising a memory unit, the shared resource is used to execute read and write requests initiated by the concurrent processes and stored in a read queue and a write queue, respectively, for accessing the shared resource;
• a configuration processor configured to:
• receive a configuration parameter relating to a relationship between the read and write requests, the configuration parameter indicating one of a count of read requests to be executed before a write request is executed and a count of write requests to be executed before a read request is executed and
• determine, based on the configuration parameter, whether to allow a read request or a write request to be executed using the shared resource;
• a read module configured to provide, in response to said determining by the configuration processor, access to the shared resource by a concurrent process to execute an allowed read request;
• a write module configured to provide, in response to said determining by the configuration processor, access to the shared resource by a concurrent process to execute an allowed write request;
• and
• a return token module configured to receive, upon completion of the execution of the allowed read or write request, a return token on a return token queue that is different from the read and write queues, the return token corresponding to the allowed read or write request.

A machine readable, tangible, and non-transitory medium having information recorded thereon for controlling access to a shared resource comprising a memory unit, where the information, when read by the machine, causes the machine to perform at least the following:

• receiving, at a processor, a configuration parameter relating to a relationship between read and write requests, initiated by concurrent processes and stored in a read queue and a write queue, respectively, for accessing the shared resource, wherein both the read and write queues are associated with the shared resource, wherein the configuration parameter indicates one of a count of read requests to be executed before a write request is executed and a count of write requests to be executed before a read request is executed;
• determining, by the processor based on the configuration parameter, whether to allow a read request or a write request to be executed using the shared resource;
• providing, by the processor in response to the determining, to a concurrent process access to the shared resource for executing the allowed read or write request;
• and
• receiving, at the processor upon a completion of executing the allowed read or write request, a return token on a return token queue that is different from the read and write queues, the return token corresponding to the allowed read or write request.