A low-power idle waiting method in multi-thread mode

Abstract

The present invention provides a low-power idle waiting method in a multi-thread mode, comprising the following steps: 1) When multiple threads of the system need to enter a waiting state, create an independent timing thread for calling a condition provided by the system Waiting function; 2) when an idle thread in the multiple threads needs usleep, judge the calling condition: 3) after the independent timing thread carries out timing for a cycle, judge whether there is a thread waiting to wake up in the multiple threads , if it exists, wake up the aforementioned idle thread; 4) when the process exits, close the timing thread. The present invention increases an independent timing thread when the same program is running in the system, but, because the conditional waiting function is used to replace the usleep function to realize that the idle thread enters the conditional waiting state, it is not necessary to make all threads of the system be in the usleep state, thereby greatly Significantly reduce CPU usage.

Description

technical field [0001] The invention relates to the technical field of electrical communication, in particular to a low-power idle waiting method in a multi-thread mode. Background technique [0002] In recent years, the topic of network security has been mentioned more and more important. When it comes to network security, we have to mention the Deep Packet Inspection (DPI) system, which plays an important role in network security. [0003] In the current high-bandwidth and high-traffic situation, in order to meet actual needs, the system must work with multiple threads. These systems are all driven by packets. Most of the time the system will be running at almost full capacity, but some of the time the system will be running without packet drivers. At this moment, the system needs to use the usleep function to suspend and wait for the arrival of the next packet. But there is a problem with using the usleep function, which will make the CPU in a state of high usage. Th...

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Problems solved by technology

[0004] The reason why the usleep function is used to deal with the situation that the system has no data packet driver is to ensure the processing accuracy. In the actual system operation process, the requirements for processing accuracy are not uniform. The existing technology uses the usleep function to achieve The idle waiting method cannot be flexibly adjusted according to the processing accuracy requirements, so that the CPU usage rate of the system remains high, which will not only increase the power consumption of the system, but also reduce the operating speed of the system, and cannot keep the system running. a better running state

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