Communication method and communication system

Abstract

The invention belongs to the technical field of computer system software specialty, and relates to an inter-partition communication method based on ring buffer under multiple cores, which comprises the following steps: determining a first partition and a second partition which need to be subjected to inter-partition communication; establishing an annular buffer channel between the first partitionand the second partition, the annular buffer channel being configured with a source port and at least one destination port; creating the source port in the first partition calling port creation service, and creating a destination port in the second partition calling port creation service; and calling a sending service of the first partition to circularly send a message through the source port, andcalling a receiving service of the second partition to circularly receive the message through the target port. In this way, the inter-partition communication message transmission process can be simplified, communication shared resource decoupling is achieved, the determinacy of inter-partition communication operation is effectively improved, the CPU multi-core parallel computing processing capacity is fully utilized, and the system operation efficiency is improved.

Description

technical field [0001] The invention belongs to the field of computer application technology, and in particular relates to a communication method and a communication system. Background technique [0002] The partition operating system conforming to the ARINC653 standard is the software foundation of the new generation of integrated avionics system, and the inter-partition communication is the main way to realize the information exchange between the partitions. When the hardware platform of the integrated avionics system is gradually popularized from single-core to multi-core processors, a partitioned operating system that supports multi-core processors is indispensable. Under the multi-core operating system, partitions are executed sequentially by a single processor according to a single schedule, but distributed in different processing cores and executed in parallel according to multiple schedules, which greatly changes the execution scenario of the inter-partition communic...

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Problems solved by technology

[0004] Although the above scheme can realize the normal operation of inter-partition communication under multi-core, it also has some disadvantages at the same time, mainly: the classic inter-partition communication process involves many shared resources, including pointer linked list, message pointer in the linked list, source port message Queue, destination port message queue, and control data in the port control block, such as figure 2 As shown; shared resource protection is distributed in the entire process of message sending, message transmission, and message receiving. There are many places that need to be protected, the scope is wide, and the length of protection time varies. In some places, the lines of code that need to be locked and protected are relatively long.

The complex shared resource lock protection will lead to frequent lock acquisition and waiting for locks during the parallel operation of the inter-partition communication function, which has a negative impact on the determinism of system operation and is not conducive to the performance of multi-core processors.

[0005] It can be seen that the existing communication schemes have technical problems of system operation determinism and poor communication efficiency.

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