An erlang process timeout management method

Abstract

The invention discloses an Erlang process overtime management method, comprising the following steps: S1, creating N overtime supervisory processes equal to the number of CPU cores; S2, creating an ordered ets table when each overtime supervisory process starts; S3. Use the proxy function as the entrance of the Erlang process to be supervised. The proxy function randomly selects an ets table, and puts the process execution expiration time end-time and process identity pid in the ets table to form a primary key {end-time, pid }; S4, the agent function executes the real entry point function and parameters; S5, each timeout supervisory process scans out the primary key whose end-time is less than the current time in the ets table at a set interval, and executes the process identity pid corresponding to the primary key operation, and remove the primary key from the ets table; S6, the proxy function removes the timeout data of the process whose primary key is {end-time, pid}. The invention provides a process overtime monitoring method with little performance loss, no single-point bottleneck, and full use of multi-core CPUs, which avoids the devastating impact of abnormal processes such as infinite loops on system performance.

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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