Coordinating accesses of shared resources by clients in a computing device

A computing device that processes job items, comprising:

• a plurality of clients;
• and
• a resource;
• wherein the computing device is configured to:
• store, by a given client of the plurality of clients, first job items in a queue for the given client;
• when the queue for the given client meets one or more conditions, notify, by the given client, one or more other clients of the plurality of clients that the given client is to process job items using the resource;
• transition, by the given client, the resource from a lower-power state to a higher-power state in preparation for processing job items;
• process, by the given client, the first job items from the queue for the given client using the resource;
• and
• determine, by the one or more other clients, based on the notifying, that the given client is to process job items using the resource and, responsive to the determining, commence processing, by at least one other client that has second job items to be processed using the resource, the second job items using the resource, thereby coordinating processing of job items by the given client and the at least one other client using the resource so that the first and second job items are processed by the given client and the at least one other client substantially contemporaneously while the resource is in the higher-power state.