Bus management techniques

An apparatus comprising:

• a memory to store a first task tracker;
• logic circuitry to selectively indicate that a task is currently performed in response to a new task being available;
• logic circuitry to complete the new task, wherein the new task is to comprise use of a shared bus coupled to an I/O device and a processor;
• and
• logic circuitry to selectively set the first task tracker to match a second task tracker stored in an external device, and selectively indicating that a task is currently performed, in response to the second task tracker not matching the first task tracker, the completed new task corresponding to a last task;
• and
• wherein a first pointer, corresponding to the I/O device, or a second pointer, corresponding to the processor, is to be written to based on a determination of whether the I/O device is idle.

An article comprising instructions stored in a memory, that when executed, instruct a machine to:

• selectively indicate that a task is currently performed in response to a new task being available;
• complete the new task, wherein the new task is to comprise use of a shared bus coupled to an I/O device and a processor;
• selectively set a first task tracker to match a second task tracker stored in an external device, and selectively indicating that a task is currently performed, in response to the second task tracker not matching the first task tracker, the completed new task corresponding to a last task;
• and
• write to a first pointer, corresponding to the I/O device, or a second pointer, corresponding to the processor, based on a determination of whether the I/O device is idle.

A system comprising:

• a computing device comprising a processor, memory, bus, and chipset, wherein the chipset is to communicatively couple together the processor, memory, and bus;
• and
• an input/output (I/O) device communicatively coupled to the bus and capable to receive and transfer information using the bus, wherein the I/O device comprises:
• a memory to store a first task tracker,
• logic circuitry to selectively indicate that a task is currently performed in response to a new task being available, wherein the new task is to comprise use of the bus and wherein the bus is shared by at least the computing device and the I/O device,
• logic circuitry to complete the new task, and
• logic circuitry to selectively set the first task tracker to match a second task tracker stored in an external device, and selectively indicating that a task is currently performed, in response to the second task tracker not matching the first task tracker, the completed new task corresponding to a last task;
• wherein a first pointer, corresponding to the I/O device or a second pointer, corresponding to the processor, is to be written to based on a determination of whether the I/O device is idle.