Will TimeMachine fail?

[Dr-wgy]

https://github.com/alibaba/jvm-sandbox/releases/tag/1.4.0
https://github.com/alibaba/jvm-sandbox/wiki/USER-FAQ#%E6%B2%99%E7%AE%B1%E5%A6%82%E4%BD%95%E5%A2%9E%E5%BC%BAjvm%E5%9B%BA%E6%9C%89%E5%87%BD%E6%95%B0

[mr3]

Yep, arex-agent also encounters the same problem.

For program execution performance, we do not recommend disable Intrinsic by default.

Instead of enhancing java.lang.System::currentTimeMillis, we choose to enchance the following methods.

java.time.Instant
java.time.LocalDate
java.time.LocalTime
java.time.LocalDateTime
java.util.Date
java.util.Calendar
org.joda.time.DateTimeUtils
java.time.ZonedDateTime

Click me see the source code: TimeMachineModuleInstrumentation.java

[lucas-myx]

@Dr-wgy
If you use the java. lang. System#currentTimeMillis method in your project, you can also solve this problem by adding dynamic classes on the configuration page: (Settings->Record->Advanced->Dynamic Classes)

The principle is that arex-agent replaces the parts of your .Class that use java. lang. System#currentTimeMillis with arex's own currentTimeMillis method, thus avoiding the problem of directly modifying the java. lang. System#currentTimeMillis method and being optimized by JIT to be ineffective.

refer to:
DynamicClassInstrumentation#replaceMethod

[mr3]

@Dr-wgy Please reopen this issue if you have further questions.