A processing method and device for monitoring semaphore based on Shenwei architecture

Abstract

The embodiment of the present invention provides a processing method and device for monitoring semaphore based on the Shenwei architecture. The method includes: if it is detected that the P operation of the semaphore in the command issuing process continues to be blocked within the preset duration, then The monitoring thread starts timing; wherein, the monitoring thread is used to periodically monitor the command execution flag bit in the order issuing process; if it is judged that the command in several consecutive monitoring cycles after the opening moment of the timing If the execution flag bits are all valid, it is determined that the command execution process is in an abnormal state; the monitoring thread is made to perform the V operation of the semaphore until the blocking state is lifted. The apparatus performs the method described above. The method and device provided by the embodiments of the present invention can effectively monitor the semaphore, so that the P operation of the semaphore caused by the abnormal state of the command execution process can be released from the blocked state.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of signal monitoring, and in particular to a method and device for processing monitoring semaphore based on Shenwei architecture. Background technique [0002] In computer operating systems, PV operations on semaphores are commonly used to implement process management. [0003] The following is a brief introduction to the principle of PV operation: PV operation is composed of P operation primitive and V operation primitive (the primitive is an uninterruptible process), and the operation on the semaphore is as follows: P(S): ① Set The value of the semaphore S is reduced by 1, that is, S=S-1; ②If S≥0, the process continues to execute; otherwise, the process is placed in a waiting state and placed in a waiting queue. V(S): ①Add 1 to the value of the semaphore S, that is, S=S+1; ②If S>0, the process continues to execute; otherwise, release the first process waiting for the semaphore...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above-mentioned prior art method is: after the command issuing process has issued the command character string, the P operation of the semaphore is blocked, and no longer responds to the command character string input by the user, and waits for the command execution process to complete the semaphore V operation. In order to continue to run and respond to user input, however, once the command execution process has an abnormal state, such as: hanging or infinite loop, etc., making the command execution process unable to perform the V operation of the semaphore normally, in this case the command issuing process will always Blocking, so that the command string input by the user can no longer be read, and the command string entered before cannot be returned normally. The performance is that the user command input interface hangs up, and any debugging command does not get a response, making it impossible to enter the hidden background. The method is used to locate and debug the command execution process

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