Mechanism for tracking age of common resource requests within a resource management subsystem

A subsystem for identifying and executing requests for common resources, comprising:

• a processing pipeline;
• and
• a total order queue (TOQ) coupled to the processing pipeline and configured to perform the steps of:
• receiving a plurality of requests for one or more common resources;
• storing a different entry in a buffer for each request in the plurality of requests, wherein the entries are stored in a temporal order;
• upon determining that a first common resource is available, distributing resource status information associated with the first common resource to each entry included in the buffer,
• searching the resource status information distributed to the entries stored in the buffer to identify a subset of entries corresponding to requests that are associated with at least the first common resource;
• identifying one or more entries included in the subset of entries that indicate that all common resources, including the first common resource, associated with the requests corresponding to the one or more entries are available;
• reading a first entry included in the one or more entries that is the oldest of the one or more entries in order to execute a first cycle of a first request that corresponds to the first entry.

A computing device, comprising:

• a processor;
• and
• a total order queue (TOQ) coupled to the processor and configured to identify and execute requests for common resources in a processing pipeline associated with the processor, by performing the steps of:
• receiving a plurality of requests for one or more common resources;
• storing a different entry in a buffer for each request in the plurality of requests, wherein the entries are stored in a temporal order;
• upon determining that a first common resource is available, distributing resource status information associated with the first common resource to each entry included in the buffer,
• searching the resource status information distributed to the entries stored in the buffer to identify a subset of entries corresponding to requests that are associated with at least the first common resource;
• identifying one or more entries included in the subset of entries that indicate that all common resources, including the first common resource, associated with the requests corresponding to the one or more entries are available;
• reading a first entry included in the one or more entries that is the oldest of the one or more entries in order to execute a first cycle of a first request that corresponds to the first entry.