Method and device for dynamically tracking java virtual machine running

Abstract

The invention discloses a method and device for dynamically tracking operation of a Java virtual machine, and relates to the technical field of computers. A specific embodiment of the method comprisesthe following steps: in a class loading stage of the Java virtual machine, filtering each loading class of the loaded Java virtual machine according to preset model data of a monitoring model; If theloading class is matched with the model data, log byte codes are woven into the loading class according to the model data; And dynamically tracking the operation of the Java virtual machine based onthe woven log byte code. Log byte codes are dynamically woven into a monitored class in the JVM class loading stage, so that source codes cannot be invaded, and JVM running conditions and possible abnormal problems can be quickly tracked and positioned; Deployment and on-line are not needed; A thread does not need to be suspended, and normal operation of the system is not affected; No extra port needs to be opened, and the possibility of network intrusion is eradicated; Log byte codes can be customized, and weaving of malicious byte codes is effectively avoided.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for dynamically tracking the running of a Java virtual machine. Background technique [0002] During the operation of Java Virtual Machine (JVM for short), some abnormal problems will inevitably occur due to illegal input or poor system structure design, so it is necessary to track and debug the program to troubleshoot and solve abnormal problems. [0003] In the prior art, JVM running is usually tracked in the following two ways: [0004] 1) Manually add logs, and observe the operation of the JVM by printing logs; [0005] 2) Remote debugging, tracking and observing JVM running by suspending threads. [0006] The inventor finds that there are at least the following problems in the prior art: [0007] 1) Source code intrusion needs to be released online: [0008] When using the method of adding logs manually, every time a log is added, it needs to be dep...

AI Technical Summary

Problems solved by technology

[0010] When using the remote debugging method, the remote debugging port needs to be opened, and the thread needs to be suspended during debugging, which seriously affects the normal operation of the JVM and reduces the operating efficiency;

[0011] 3) There are hidden dangers in network security

[0012] When using the remote debugging method, the remote debugging port needs to be opened. This method is difficult to implement, and the remote debugging port provides an intrusive port for network attacks, which has potential security risks.

Images