A computer readable storage medium storing a set of instructions executable by a processor. The set of instructions is operable to receive, from a first processor, a message to be sent to a second processor; store the message in a portion of a shared memory, the shared memory being shared by the first processor and the second processor; store, in an instruction list stored in a further portion of the shared memory, an instruction corresponding to the message; and prompt the second processor to read the message list.