Low power consumption idle waiting method in multi-threaded mode

Abstract

The invention provides a low power consumption idle waiting method in a multi-threaded mode. The method comprises the following steps of: 1) when multiple threads of a system need to enter a waiting state, creating an independent timing thread that is used for calling a condition waiting function that is provided by the system; 2) when an idle thread of the multiple threads needs usleep, judging a calling condition; 3) after the independent timing thread performs timing for a cycle, determining whether a thread that is waiting for wake-up exists in the multiple threads; if yes, waking up the idle thread; and 4) when a process exits, closing the timing thread. According to the method of the invention, when a same program is running in the system, an independent timing thread is added; the condition waiting function is used to replace the usleep function to enable the idle thread to enter the condition waiting state, and not all the threads of the system need to be in the usleep state, thereby dramatically reducing the CPU utilization rate.

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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