In-vehicle control device, control method, and computer program

Abstract

In an in-vehicle control device configured to perform data transmission and reception between a plurality of virtual control devices with use of a circular buffer, the circular buffer includes a plurality of blocks. A virtual control device (a first virtual control device) writes data into the buffer and two virtual control devices (a second virtual control device and a third virtual control device) read data from the buffer. The plurality of blocks include: first blocks for which overwriting is prohibited when unread data remains in the blocks; and second blocks for which overwriting is not prohibited. If data that has not been read by the second or third virtual control device remains in all first blocks, switching control is executed to write data into a second block.