Methods and apparatus for reduced-latency data transmission with an inter-processor communication link between independently operable processors

A method of transferring a payload via an inter-processor communication (IPC) link between a first independently operable processor apparatus and a second independently operable processor apparatus, the method comprising:

• based on at least a portion of the payload to be transmitted to the second independently operable processor apparatus, determine one or more application constraints associated with transmission of the payload;
• based on the determined one or more application constraints, selecting a transaction mode from a plurality of transaction modes;
• and
• using the selected transaction mode, enabling transfer of the at least portion of the payload from the first independently operable processor apparatus to the second independently operable processor apparatus via the IPC link.

A device configured to enable data communication between a first and a second independently operable processor apparatus, the device comprising:

• an inter-processor communication (IPC) data link configured to transmit data between the first and second independently operable processor apparatus;
• and
• a non-transitory computer-readable apparatus comprising a storage medium having a computer program stored therein, the computer program comprising a plurality of instructions configured to, when executed by the first processor apparatus, cause the first independently operable processor apparatus to:
• determine a size of a payload to be transmitted to the second independently operable processor apparatus;
• based on the size of the payload exceeding a threshold, place the payload within a memory location indicated by a data structure;
• and
• based on the size of the payload not exceeding the threshold, place the payload within the data structure.

An independently operable processor apparatus, comprising:

• computerized logic executable by the independently operable processor apparatus, the computerized logic being configured to:
• identify one of a plurality of communication protocols to be used for transaction of data;
• based on the identified communication protocol corresponding to a first communication protocol, retrieve from a first data structure array a first data structure, the first data structure containing a payload, the first data structure having been written to the first data structure array by another independently operable processor;
• based on the identified communication protocol corresponding to a second communication protocol, retrieve from the first data structure array a second data structure, the second data structure not having the payload, the second data structure having been written to the first data structure array by the another independently operable processor, and obtain the payload based on information in the retrieved second data structure;
• and
• cause transmission of the payload to an external device.