Erlang process timeout management method

Abstract

The invention discloses an Erlang process timeout management method. The method comprises the following steps: S1, creating N timeout supervision processes of which the number is equal to the number of cores of a CPU; S2, when each timeout supervision process is started, creating an ordered ts table; S3, using an agent function as an entrance of the Erlang process to be supervised, randomly selecting an ts table by the agent function, and putting process execution expiration time endtime and a process identity pid into the ts table to form a primary key {endtime, pid}; S4, executing a real entry point function and parameters by the agent function; S5, enabling each timeout supervision process to scan out a primary key with endtime smaller than the current time in the ts table at set intervals, executing an ending operation on a process identity pid corresponding to the primary key, and removing the primary key from the ts table; S6, enabling the proxy function to remove timeout data ofthe process with the primary key being {end-time, pid}. The invention provides a process timeout supervision method which is extremely low in performance loss, has no single-point bottleneck and makes full use of a multi-core CPU, and destructive influence of abnormal processes such as endless loop and the like on system performance is avoided.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to an Erlang process timeout management method. Background technique [0002] Erlang provides an ultra-lightweight process mechanism for executing functions. According to hardware performance, the ultra-lightweight processes that can be executed in parallel can range from thousands to hundreds of thousands or millions. Although the Erlang virtual machine supports creating a large number of lightweight processes at the same time, it does not support setting a time limit for the execution of the processes. If there is an infinite loop, a large number of abnormalities, and long-term calculations during process execution, it will have a devastating impact on system performance. Therefore, a process timeout monitoring mechanism is required to manage Erlang timeout processes. Contents of the invention [0003] In order to solve the above-mentioned problems, the present invention prov...

AI Technical Summary

Problems solved by technology

Although the Erlang virtual machine supports the creation of a large number of lightweight processes at the same time, it does not support setting a time limit for the execution of the processes

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