Inter-process communication method and device based on shared memory and electronic equipment

Abstract

The invention provides an inter-process communication method and device based on a shared memory and electronic equipment. The method comprises the steps of providing a first interface, and enabling the first interface to execute the following operations in response to a first call request of a first process: if a write judgment condition in the first call request is not met, adding 1 to a first reference count, unlocking, carrying out P operation on a first semaphore, and entering a write waiting state; during waiting, if it is judged that the writable available amount of the message queue interval is greater than 0 based on the first semaphore and a write judgment condition in the first call request is met, exiting; and providing a second interface, and enabling the second interface to execute the following operation in response to a second calling request of the second process: conducting V operation on the first semaphore of the message queue interval of the second process based on the value of the first reference count so as to enable other processes in the waiting state to be awakened. Therefore, the waiting process releases the system resources, then the waiting process is awakened through the V operation of the first semaphore, and the communication efficiency of the system is improved.

Description

technical field [0001] The present application relates to the communication field, and in particular to an inter-process communication method, device and electronic equipment based on shared memory. Background technique [0002] At present, when different processes need to communicate, if the storage space of the message queue corresponding to a process is full, other processes that need to send messages to the process at this time cannot send messages successfully. [0003] In the related technology, other processes may cyclically judge the status of the storage space of the process that needs to communicate until the storage space is not full, then the other processes may send a notification to the process at this time. [0004] However, the above-mentioned continuous loop judgment will occupy more system resources, and the system communication efficiency is low. Contents of the invention [0005] The present application provides an inter-process communication method, d...

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Problems solved by technology

[0005] The present application provides an inter-process communication method, device and electronic equipment based on shared memory, which are used to solve the problems in the related art that the process communication occupies more system resources and the system communication efficiency is lower

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